A remote telemetry system and method for transformers in substation automation, said system comprising: monitoring means adapted to monitor current tap position of at least one transformer, in a predetermined manner at preset time intervals; parameter defining means adapted to define plurality of parameters in relat...

A real-time railway track fault detection system comprises: Electromotive Force (EMF) transmitting unit adapted to transmit EMF signals along an operative forward direction, said EMF transmitting unit adapted to be placed on a locomotive and further adapted to channel said transmitted signals on to railway tracks in...

An iron with a movable wire mechanism for reducing interference of wire extending from the iron, said iron comprising an iron handle with a channel in said handle, along the length of said handle, in order to provide a mating contact for electrical connection through said length of said channel; and wire with a fixe...

3-Phase slip ring motor. It comprises a rotor (1) mounted on a shaft (2). The shaft comprises a hollow tubular member (3) having a plurality of radial ribs (4) extending from the tubular member in radially spaced apart relationship with one another. A reinforcing ring (5) is mounted over the outer ends of the radial...

A revolving grill fan assembly is adapted to provide air throw in directions not restricted by its grill assembly. The revolving grill fan assembly comprising an operative circular posterior grill, having a first circular rim, adapted to form a part of a housing for said fan assembly; a first annular ring adapted to...

A transformer with improved key spacer element arrangement, each key spacer element being disposed between two adjacent disc stacks, said arrangement comprising: first stack of key spacer elements adapted to be collinear with respect to each other in a stacked form; and second stack of key spacer elements adapted to...

A modular brush gear assembly for motors having serially aligned box-slots for holding brushes, said assembly comprising: a plurality of contoured assemblies, each contoured assembly having a constant outer peripheral dimension adapted to be in contact with said box-slots of said brush gear assembly and further havi...

A hazardous motor with internal cooling mechanism, said motor including a motor housing adapted to envelope said motor, said motor housing having a framed assembly of two concentric fames with an internal frame surrounding said motor, said motor housing comprises: one or more holes, on the periphery of motor stampin...

A reverser comprising: housing characterised with an inner wall located inside said housing, along the length of said housing, spaced apart from the lateral walls of said housing, but substantially close to one of said walls, thereby forming an inner channel; piston and diaphragm mechanism adapted to provide forward...

A disconnector / earth switch of a switchgear equipment, said disconnector / earth switch comprising: at least a solid slider element adapted to be slidably ensconced within at least a hollow slider element, said solid slider element adapted to be slidably ensconced within a channel, said solid slider element adapte...

A method of press-out of a wound pack from a first stator case and of press-in into a second stator case, in a continuous sequence, said method comprises the steps of: first step of installing said first stator case on a hydraulic press base plate, said first stator case, said base plate involving a hydraulically op...

A modular brush gear assembly for a rotating electrical machine having serially aligned box-slots for holding brushes, said assembly comprises: a first axially mounted lever mechanism adapted to provide operative inward and operative outward movement to at least a first wall which defines the breadth-wise pocket siz...

A domestic storage water heater. The water heater (1) comprises a totally enclosed storage tank (2) having a cold water inlet (3), hot water outlet (4), pressure relief valve (5), mounting brackets (6), heater elements, temperature control device and status indicator. The storage tank has a capacity of 15 litres or ...

An earth fault detector for an AC induction motor. The detector (1) comprises an inverter (2) connected across the voltage lines (3) connecting the induction motor (4) to a source of power supply. The detector also comprises a bridge rectifier (5) one input (6) of which is connected to the DC link capacitor (7) of t...

An improved drill jig adapted to be placed on a component for accurately locating hole positions on the component for drilling holes in the component with the use of said drill jig, said drill jig comprises: stepped plate, said step being located annularly on the underside of said plate; four hardened pins dispersed...

Air cooled AC induction motor. The motor comprises a stator (1) located within a stator frame (9) having a pair of circular openings (10,11), one at each end thereof. The stator frame further has a plurality of spaced reinforcing inner plates (12) arranged within the stator frame along the length thereof. Each of th...

An electric ceiling fan (1) Comprising a U-shaped Shackle clip.(2)defining a curved portion (3)and pair of confronting flanges (4)defining a flat portion (6)along the centre thereof. The flanges are profiled to sit over the suspension tube (7)in close contact therewith and fitted onto the suspension tube with known...

A two piece street light enclosure (1) comprising a bottom cover (2) and a top cover (3) hinged (hinge 4) together at the rear ends thereof. The light enclosure further comprises a lever assembly for opening and closing the enclosure and comprises a L-shaped plate (15), one limb (6) of which is fitted in the bottom ...

A modular substation housing for housing a transformer, switchgear equipment, and associated equipment, characterised in that, said housing being covered by locally available building material, and said housing comprises: clam shell type opening mechanism for said housing, to provide access to interior of said housi...

A tap changer enabled compensation transformer with main transformer (comprising at least primary windings and at least secondary windings) comprises: at least a compensation transformer adapted to be connected in series to said main transformer, said at least a compensation transformer comprising at least primary w...

A control mechanism for a switchgear equipment, said equipment including at least a conductor located in a downward facing cantilever manner to form a stationary contact of a disconnector switch or a disconnector mechanism and at least a conductor in an upward facing manner to form a stationary contact of an earthin...

A testing apparatus for determining air flow delivery comprising an adjustable table for supporting an air delivery device such as a fan. Further, the apparatus comprises an air flow measuring device placed opposite the air delivery device i.e. fan for determining the air flow. Further, the apparatus provides at lea...

A system for a circuit breaker with double trip coil and controller for double trip coil, thereof, for a power system, said system comprises: main tripping coil adapted to trip said circuit breaker in cases of tripping command as sensed by a controller, said main tripping coil being powered by a supply line; auxilia...

A swiveling mechanism for man coolers, said mechanism comprising: - collar adapted to provide support to a motor of said man cooler which drives an impeller with blades; - thrust bearing mechanism adapted to receive the load of said motor through said collar; and - pin extending below said thrust bearing mechanis...

A pressure exerting jack comprising a press plate (1), a jack plate (2) held over the press plate (1) in a spaced apart relationship therewith by means of spacer studs, a top surface of the jack plate (2) comprising a plurality of spaced apart concentric endless stiffeners (3) and a plurality of spaced apart radial ...

A composite layer coating to enhance photocatalytic activity; said composite layer coating comprising : a. First layer comprising anatase metal doped nano-Ti02 /β-zeolite on the outer surface of a substrate; said layer having thickness in the range of 1 to 3 µm; and b. Second layer comprising energy storage mat...

The present invention relates to a circuit and process for generating dimming control voltage from a power supply line for dimming lights. The process comprises that sensing a power supply voltage from a power supply line by a connector one Jl (302), allowing the power supply voltage to a stepdown transformer (306) ...

An improved communication system adapted to provide communication architecture and protocol between at least an input/output card to at least a master station through at least a slave station, said system comprises: slave data handling means adapted to handle input data from a at least an input / output card, said s...

A universal mounting fixture for axle-counter sensors, said fixture comprises: at least a longitudinal bar adapted to provide a support structure for said fixture when said fixture is aligned alongside rails; at least a transverse bar adapted to intersect said longitudinal bar; at least a resting bracket spaced apar...

A camera view tampering detection system in order to detect tampering events of camera using video stream that said camera captures, said system comprising: a frame decoding mechanism; a contrast detection mechanism; a frame blurring detection mechanism; a down sampling mechanism; an illumination noise removal mecha...

An intelligent fabric sensing iron comprises: image capturing means adapted to capture an image of an object to be ironed; image analysing means adapted to analyse each captured image in relation to pre-defined parameters of analysis in order to determine fabric type in relation to stored pre-defined parameters and ...

A system for auto-calibration of a circuit breaker for point-on-wave switching, said circuit breaker comprising a plurality of parameters per at least a pole, said circuit breaker comprising a controller adapted to provide at least a control signal for actuation of said circuit breaker, said control signal being ada...

A locking mechanism for telescopic pipes" assembly, said locking mechanism adapted to be ensconced within a collate element, said assembly comprising: a substantially annular ring element with a radial opening and with a corresponding substantially annular slot at its operative bottom surface; a substantially annula...

A rotor comprising a rotor body with longitudinal slots which open at its axial ends, said rotor comprises: a plurality of substantially rectangular strips, having two side arms (bars), of metal with rounded corners to provide unified O-bars, each of said arms being fitted into said slots, such that, each slot recei...

A system for monitoring the health of a lightning arrestor, in communication with a High Voltage line, said system comprising: - zero flux current transformer adapted to be connected in series with said lightning arrestor in order to collect the leakage current signal across the ground terminal of lightning arresto...

A system for Zonal protection monitoring health of a transmission line, said system comprising: - reference impedance database means adapted to store reference impedances at pre-determined locations along a transmission line; - voltage and current monitoring means at each of said pre-determined locations along sai...

A sensor arrangement for high resolution position sensing in closed loop motor control for a motor, said motor comprising a main set of sensors consisting of a first main sensor, a second main sensor, and a third main sensor, each of said main sensors being spaced apart 120° electrically from each other, said sensor...

An axle-counter system installable on a two-ended single section railway track 100 having at least one diversion 102 for determining direction of travel of a rail-bound vehicle including a first wheel counter set A and a second wheel counter set B disposed parallel to guide rails 104 and at opposite ends of the rail...

A fixture gauge for inspecting a wound pack of a stator body of electrical equipment, said fixture gauge comprises: a first ring with a pair of adjacently located notches, said notches including a first notch and a second notch adapted to receive at least a lead wire respectively, said notches being parallel to each...

A method of heat treatment of an aluminium alloy, said method comprises the steps of: heating said aluminium alloy in a furnace up to a first pre-determined temperature; soaking said heated aluminium alloy at a first pre-determined temperature for a pre-determined duration of time; either cooling said soaked alumini...

An adapter for auxiliary terminal boxes for motor housing, said adapter comprising a first frame divided into a first portion and a second portion; and second frame adapted to map over said second portion of said first frame.

a. at least a roller ball adapted to be engaged with the base of the housing of a transformer; b. bearing assembly of a plurality of aligned ball bearings adapted to be located between each of said roller balls and the base housing in order to provide for the roller body to rotate underneath the housing, thereby ca...

A slip ring adapter, adapted to be fitted axially onto a shaft, said adapter comprising a bell mouth shaped unit consisting of a neck member seamlessly extending into a shoulder member, said neck member and said shoulder member, being substantially circular cross-section, hollow members; locking mechanism at operati...

An improved motor with commutator improved commutator with tapered insulation segments comprising plurality of commutator bars and commutator insulation segments interspersed alternatively in an annular manner, characterised in that, the operative top surface of said commutator insulation segments is coated with a g...

A current transformer terminal system with phase segregated terminal box, said terminal box comprising an entry means adapted to receive three phase supply to achieve a three phase (star) terminal box and further includes a shorting link adapted to short said received three phase supply to achieve a single phase (ma...

A spring-loaded cascaded arcing horns assembly, said assembly comprising a plurality of arcing horns connected one after another in series to form a protruding cascaded arcing horn assembly; a first bar adapted to locate said plurality of cascaded arcing horns in a parallel fashion, said arcing horns extending outwa...

An improved ratchet and pawl based circuit breaker comprising a ratchet and pawl based drive mechanism, said circuit breaker assembly comprising: at least a pawl assembly with a pawl tip and a projection extending tangential to said pawl and spaced apart from said pawl tip, said spaced apart manner of said pawl tip ...

A tap changer mechanism for a transformer with primary windings and extra windings connected to said primary windings, said tap changer mechanism. comprises: a switching topology at said primary windings, said switching topology comprisng a first set of turns in series with a second set of turns, said switching topo...

A hoe-shaped stator spacer comprising: an elongate member with an (I) H-shaped cross section, said elongate member consisting of a central rectangular column flanked by a pair of side rectangular columns parallel to each other, length-wise, and placed laterally orthogonal to the width-wise edges of said central col...

A system for improved performance of shunt active harmonic filter in presence of power factor correction capacitors applied to a network, said system comprising: a harmonic signal current signal injecting mechanism in order to inject a harmonic current signal with a pre-determined magnitude and a pre-determined phas...

An improved heat exchanger comprising a plurality of tubes bundled together in a parallel configuration with respect to each other in order to allow entry of air from one end of the tubes and exit of air from the other end, characterized in that, each of said tubes include a sector-shaped or almond-shaped cross-sect...

A control mechanism for a Gas Insulated Switchgear (GIS), the GIS comprising a pair of interrupters orthogonally disposed with respect to each other, each of the interrupters comprising a fixed contact and a movable contact, the control mechanism actuating linear motion of the movable contacts and comprising a rotar...

A rope guide assembly comprising centrally located cylinder adapted to snug-fit co-axially with a conductor of a transformer; and plurality of radially dispersed flanges about said cylinder, at the operative top edge of said cylinder, said flanges including slits at their operative distal end for guiding a rope of a...

A machine for testing the performance of an AC motor. The machine (1) comprises drive shaft (14) having a driven end (14a) and a drive end (14b) and a forked portion (14c, 14d) at each of the driven end and driving end and a mounting flange (14e, 14f) at each of the driven end and drive end joined to the respective ...

An improved fan assembly adapted for a motor, said fan assembly comprises: a belt and pulley arrangement between a motor shaft at drive or non-drive end of said motor and a fan mounted on said shaft through a rolling bearing, said belt and pulley being driven by said motor shaft and driving said fan, said belt and p...

Disclosed herein, is a novel arrangement of the driving mechanism of the disconnector and earth switch asembly that are used in gas insulated switchgears (GISs). The disconnector and earth switch assembly is designed to function in a 245 kV GIS. The rack and pinion mechanisms for driving the disconnector and earth s...

A circuit breaker includes first and second contact assemblies. The first contact assembly includes a movable first main contact, a movable first arc contact, and a nozzle. The second contact assembly includes a fixed second main contact and a movable second arc contact. The circuit breaker includes a scissor arrang...

A circuit breaker includes first and second contact assemblies. The first contact assembly includes a movable first main contact, a movable first arc contact, and a nozzle. The second contact assembly includes a movable second main contact and a movable second arc contact. The circuit breaker further includes a scis...

A method and equipment for removing a wound body, vertically, from a stator body of an electrical equipment, specifically, of a motor. A vertical press-out equipment for removing a wound body from a vertically positioned stator body, said equipment comprising first fixture which is fitted co-axially and concentrical...

An environment friendly woodless packing case system comprising a box cage with a framework to define an operative bottom side defined by a bottom framework which includes elongate bridge elements for providing base support by means of a framework, an operative top side defined by a top framework which includes a su...

A torque indicating washer element comprising a disk element with a central hole, characterized in that, said disk element being provided with a co-axial frusto-conical substratum having a first operative horizontal face in connection with the underside of said disk element and a second operative horizontal face bei...

A wide input range Switching Mode Power Supply (SMPS) equipment assembly comprises: input means adapted to input a current of pre-defined voltage range; transistorised constant current and voltage circuit mechanism for pulse width modulated controller means adapted to receive input current to be given as a further i...

Disclosed herein, is a spur gear based novel mechanism for prevention of overcharging of springs in a spring based circuit breaker drive mechanism. The arrangement of the present invention has a driving spur gear, a charging spur gear with a toothless section, a gear segment, a charging crank, and a latch arranged i...

A circuit breaker includes first and second contact assemblies. The first contact assembly includes a movable first main contact, a movable first arc contact, and a nozzle. The second contact assembly includes a second main contact, a second arc contact, and a transfer contact. The nozzle is connected to the first m...

An interlocking system for preventing angular displacement of a downrod in a fan due to torque exerted from a co-axially, and partially concentrically, placed shaft; said system comprises: stepped element, in said downrod, being defined by at least a linear indentation adjoining the lengthwise edge of a linear slit ...

A hook forming assembly for a mount machine for making fluorescent tube lamps, said assembly comprises: a tubular channel element with an angularly displaceable roller pin located transversely through side walls of said tubular channel, said roller pin being spaced apart from the surface of said tubular channel such...

A single phase traction transformer comprising a core and coil assembly disposed in a protective tank, the core comprising three vertically spaced apart limbs (1, 2 & 3) held between a bottom yoke (4) and a top yoke (5), all made of magnetic material laminations, the coil comprising an auxiliary winding (6) sandwich...

A universal adapter for appliances with rotational drive motion, said adapter comprising: a. an adapter housing adapted to receive a vessel with suitable blades, driven by rotational motion; and b. mating means on said housing adapted to mate with a mating mechanism with a rotational drive element powered by a mo...

A ventilation mechanism for cooling a heat generating totally enclosed rotating equipment, having at least an disk-shaped end shield, said ventilation mechanism comprises: plurality of angled suction holes, radially dispersed, on each of said end shields for aiding input of air from the atmosphere into said equipmen...

An system for cleaning vacuum interrupter contacts, said system comprises: a fabricated chamber comprising at least an electrode attached to a high voltage source and adapted to receive at least one vacuum interrupter contact; at least a first gas reservoir adapted to be connected to said fabricated chamber by means...

A hydraulic jack system 200 that provides the benefit of variable mechanical advantage to an operator during operation is disclosed in the several embodiments of this disclosure. The system includes a jack assembly 202 having a jack piston 204 disposed within a jack cylinder 206. The jack assembly 202 is connected t...

An improved countersunk locking mechanism adapted to provide abutment between an operative outer surface and an operative inner surface, said operative inner surface comprising a stepped cut which is co-axial with a countersunk bore with a nut fitted in said stepped cut region in order to receive a countersunk screw...

A radiator unit 100 for cooling of transformer oil is provided. The radiator unit 100 includes transformer housing 104, a distributor header 112 and a collector header 114 that are coupled with an outlet 108 and an inlet 106 of the transformer housing 104. respectively. The distributor header 112 and the collector h...

A leaky lamp segregation assembly for an exhaust machine for lamps or the like is described. In one embodiment the metal sensor senses the position of the pinch lever pertaining to the faulty position and triggers a high-pressure valve to open allowing high-pressure air to pass through a nozzle directed towards the ...

An inlet silencer mechanism for heat exchangers, said mechanism comprises: cylindrical housing cooperating with an external fan; cone shaped element with a back-plate, placed co-axial to said cylindrical housing, and adapted to guide entry of air away from the centre of said housing towards inner walls of said housi...

A capacitor voltage transformer. It comprises a capacitor (1) having a plurality of stacks (2) of capacitor elements (3) stacked one above another and located in a tubular porcelain insulator (4) supported on a base (6) at the bottom thereof and having a top plate (7) fitted at the top thereof and a bellows (8) disp...

A crimping machine for use in the manufacture of a compact fluorescent lamp. The machine (1) comprises a crimping pin holder ring (2) mounted at the bottom of a platform (2a) concentric with a lamp base holder hole (2b) in the platform. The holder ring comprises a plurality of spring (5) biased crimping pins (3) loc...

An electronic device for sensing the operational status and electrical parameters of an induction motor. The device (1) comprises a current transformer (2) and a voltage transformer (3) connected to the stator windings of the motor (4). A first analog to digital converter (5) is connected to the current transformer ...

An adjustable mandrel for holding a wound pack, said mandrel comprising circular base plate with a central shaft extending orthogonally from the centre of said base plate; plurality of jaws placed about the central shaft in a circumferential manner to hold the wound pack due to force exerted in its inner wall; first...

A method for treating cold rolled loose metal laminations, said method comprising: first step of induction heating said metal loose laminations up to temperatures in the range of about 600°C to 800°C; second step of maintaining said metal loose laminations in heated temperature in the range of about 600°C to 800°C f...

A Modbus Master system for TCP/IP communication using multi-drop type data polling between a Master station and multiple slave stations, through a single task, said system comprises: first table defining means adapted to define entries in said first table using said system, said entries being in relation to type of ...

A testing system for testing direction of rotation of motor, said system comprising: motor to be tested with a first shaft co-axially placed along with a dummy motor with a second shaft; coupling mechanism adapted to couple said motor with said dummy motor said coupling ensuring movement of said second shaft along w...

An insulated lead-out structure of a transformer comprising an electrically conducting rod (1) adapted to be electrically connected to a lead-out transformer winding at one end (4) thereof and to a bushing end at the other end (5) thereof, the conducting rod (1) comprising a coating of an insulating material on an o...

A solar energy enhanced hybrid oven system comprising: baking chamber adapted to receive items upon which heat is to be irradiated, said baking chamber being lined with electrically operated heaters along its walls and fiirther including openings to receive hot air; green house chamber adapted to trap solar radiatio...

A pedestal fan. The fan (1) comprises a fan motor (2) having blades (3) mounted on the housing of the fan motor and a guard (4) and an upright mount assembly (5). The mount assembly comprises an outer tube (6) and an inner tube (7) up and down movably held in the outer tube. The outer tube has a bottom cup (8) fitte...

An adjustable mounting assembly for a wall mounting fan. The assembly (1) comprises a base (3) adapted to be mounted on a mounting surface and having a ball (4) projecting outwardly from the centre of the front side thereof. The assembly also comprises a recessed inner member (8) having an open bottom and an open si...

A modular lighting fixture with adjustable luminous characteristics is disclosed. The modular lighting fixture has adjustable beam or luminous characteristics, which is easily usable by a user. A single fixture with multiple focus beam options or multiple luminous characteristics.

A moulded vacuum switchgear. The switchgear (1) comprises a vacuum circuit breaker (2) mounted on a mobile carriage (3) and located in the breaker chamber (4) of a housing (5). The vacuum circuit breaker comprises an upper row of three movable contacts (6) and a lower row of three movable contacts (7). A spout plate...

A controller for multiple gas circuit breakers, said controller comprises: multi-phase close feedback means from close coils of said circuit breaker, two lines of each phase from a three phases supply are provided as input for said multi-phase close feedback means; multi-phase trip feedback means from trip coils' sw...

An extended electronic system and device for automated calibration of point-of-wave switching controllers for circuit breakers, said device comprising: extension unit adapted to receive current and defined test parameter values in order to be plotted for graphical and numerical comparison to obtain a comparative ana...

A testing device for testing the endurance of a spring is provided The device comprises a stationary piate mounted on a base and having holding means for hoiding one end of the spring to be tested and a movable plate. The movable plate provides an expansion and compression on the spring being disposed. The device em...

A rotor shaft is described which enhances heat dissipation of the motor it is used in. In one embodiment channelized depressions are provided on the longitudinal surface of the rotor shaft forming a helix from one face of the rotor shaft to the other face for smooth flow of air along said channelized depression for ...

A shoulder forming mechanism of a mount making machine for the manufacture of a fluorescent tube light. The mechanism (1) comprises a horizontally disposed actuator (2) mounted at the top of a main shaft (5) vertically disposed for up and down movement about a vertical axis. The actuator is movable up and down with ...

A radial fan for use in rotating machines, said fan comprises: first annular ring; second annular ring; plurality of radially placed intermittently dispersed support elements adapted to connect said first annular ring to said second annular ring, said blades being NACA 0012 profiled blades, said gap between said sup...

A power transformer comprising a main winding section which comprises a plurality of interconnected discs, a plurality of conductor turns in each disc, a first tap terminal being connected to an inner turn of a last disc and a second tap terminal being connected to an outer turn of the last disc; and a tap winding s...

An internal adjustable air guide for a motor, said air guide comprises; an outer assembly; and an inner assembly, such that said outer assembly telescopically receives or ejects said inner assembly, thereby providing variable adjustment for location of said air guide.

An assembly for electrically isolating a core frame assembly 100" from a bottom plate 110 of an oil tank disposed within a transformer, the core frame assembly 100" including a low voltage side 146 and a high voltage side 148, the bottom plats 110 and the high voltage side 148 electrically maintained at earth potent...

A visual and aural indicating apparatus for electrical and electronic assemblies, said apparatus comprising: calibrated dial along with at least a first pointer adapted to be angularly displaced about said dial to provide a reading from said dial, said at least a first pointer being an illuminated pointer; at least ...

A separator assembly for slip rings of electrical rotating machines, said slip rings being groups of rings or discs mounted on a rotor shaft of an electrical rotating machine, a first group of rings relating to a first phase, a second group of rings relating to a second phase, and a third group of rings relating to ...

A current transformer box with three phase cable shorting mechanism, said mechanism comprises: an elongate bar being an insulation bar located in a spaced apart manner from the walls of said current transformer box; and metal link with three holes located substantially at the centre of said link, said holes being co...

A drill jig for drilling holes on two planar surfaces of an end shield of an alternator is described. In one embodiment of the present invention the drill jig comprises of two jig plates to cater to two planar surfaces of an end shield that require drilling. The drilling operation from one direction for both the pla...

A power press tool for punching out rotor dampers, wherein each of the dampers 184 comprising a central body having a central hole and a plurality of limbs 170, 174, 178, 182 radially extending from the central opening, the tool including a horizontally extending punch segment 100 fixedly attached to a punch holder ...

A circuit breaker operating mechanism for moving a movable contact (12) of a circuit breaker, the operating mechanism comprising a combustion chamber (1), an internal tank (16) held within the combustion chamber (1) for storing at least one chemical reactant therein, at least one external tank (17) provided outside ...

A bidirectional fan with helical air flow, said fan comprises: central hub on which blades project out, radially, characterised in that, said blades are helical blades positioned at a pre-defined angle in relation to lateral circumference of said hub.

A transient and ferro-resonance damping circuit for a coupling capacitor voltage transformer comprising a first damping resistor connected across a secondary winding of the transformer and a second damping resistor and a resonant circuit in series, connected across another secondary winding of the transformer, the r...

A method and a progressive stamping tool for punching out rotor and stator laminations simultaneously from a metallic sheet in a progressive stamping press system wherein the press system operates in a sequence of three stages in a cycle of operation and the rotor is formed in the first and second stages and the sta...

A device to provide a uniform skew setting to a linearly arranged plurality of rotor core segments which define a circular space therein with each of rotor core segments having a plurality of peripheral winding slots. The device comprises of a base plate firmly mounted over a support surface to receive the plurality...

An adaptor for connecting a load to an external power supply, the adaptor 15 comprising of three adaptor units 16, 17, 18 slidingly held adjacently to each other on a holding sheet 19. Wires from the load are inserted into the holes at one side 21 (set as factory end side) of the adaptor units 16, 17. 18 and wires f...

A collaborative protective housing for flywheel and brakes, said housing comprising: a. flywheel protective housing adapted to protect a flywheel, its shape corresponding to the shape of said flywheel; and b. brake housing adapted to be partially ensconced within said flywheel protective housing through its oper...

A lighting fixture for mounting on a surface (1) or a Pole (2) is provided. The lighting fixture comprise a lamp housing (4) and a bracket (3) having a flat surface (5) and a pair of arms (6&7) facing each other extending from the opposite ends of the flat surface (5), the lamp housing (4) being pivotally mounted on...

A heat treatment method for metal lamination treatment, said method comprising the steps of: first step of heating said metal lamination; second step of soaking said heated metal lamination; third step of cooling said heated and soaked metal lamination; fourth step of blowing steam over the cooled metal lamination; ...

A pressing fixture 100 for pressing stator laminations 102 includes a punch holder 110 rigidly mounted on a bottom plate 108, the punch holder 110 includes a pair of locating pins 118 inserted centrally within the punch holder 110 and attached thereto. A plurality of studs 120 is also insertable within the punch hol...

An improved shaft and an improved process for shaft mounting of rotor, said process comprises the steps of: refraining from machining bearing seats on a shaft, located on either side of the area about which rotor is to be mounted, up to a predetermined thickness; inserting a rotor on to said shaft with relatively un...

A blender comprising a container (1) and a rotatable blade assembly (2) disposed within the container (1) wherein the inner surface (4) of the container and the blade assembly (2) within the container (I) being coated with a non-stick food grade coating (6). (Fig 1)

An interlocking system for controlling gates for traffic crossing at crossing junctions of railway tracks, said system comprising:voltage feeding means adapted to feed voltage to a portion of a railway track spaced apart from said gate; current feeding means adapted to feed current to said portion of railway track; ...

Brushless DC motor driven ceiling fan. The fan (1) comprises a motor housing (2) formed of a top end shield (3) and a bottom end shield (4) fixed together and a hollow fan shaft (15) extending into the motor housing with the bottom end shield and top end shield rotatably mounted to the fan shaft. A plurality of fan ...

A corona ring assembly for a Surge arrester, said corona ring assembly being a coaxial pair of rings, with their diameter relatively greater than the diameter of a column of Surge arrester upon which it is to be installed, said rings being interconnected at intermittent radial locations by means of plates, and furth...

A system for maximum efficiency tracking in variable speed generator system, said system comprises: flow meter adapted to be associated with an engine / generator of said variable speed generator system for sensing flow rate of fuel to said engine / generator; varying means adapted to vary speed of said engine / gen...

An automated test workbench system adapted to test multiple parameters relating to operation of at least one device in an automated fashion which comprises: a. at least one connecting means adapted to connect one device in accordance with its physical connections for physical working parameters and electrical con...

A device to provide a vertical displacement of an insulating rod assembly of a gas circuit breaker, the device comprises of a drive means for providing a rotary motion and a measuring means to measure an angular and vertical displacement effected by the rotary motion. A central rod extending on both sides of a base ...

A circuit breaker 102 and a kiosk 100 combination, wherein the kiosk 100 comprises, an upper cabinet 104 and a lower cabinet 106 separated by a horizontally disposed partition memberl08, the upper cabinet 104 having an access window 130 closed with a door 132 hinged 134 to an edge 136 of the upper cabinet J04, the d...

A multifunctional improvised electronic system for performing and monitoring interlock operations of a breaker assembly having a set of relay, tripping coil,and closing coil; said system comprising fault defining means in relation to associated said relays, adapted to define thresholds of fault conditions; trip con...

A fixture for forming wound pack overhang, said fixture comprises: base plate adapted to lend base support to entire said fixture, wherein said fixture extends in an operative vertical direction from said base plate in a co-axial manner; co-axially located bottom locator hollow ring; co-axially and co-planarly locat...

An evaluation assembly for solid insulation drying, said assembly being an enclosure adapted to enclose stacks of disc windings and insulation windings according to their formation of a core and further comprises: roschelling wood plate adapted to be co-axially placed at the operative top and at the operative bottom...

A method for preparation of nanocomposites with improved electrical insulation and thermal conductivity comprises preparing ACNTS by simple, efficient and economical process; dispersing the ACNTs into a resin matrix and subjecting it to ultrasonication coupled with mechanical agitation at 1500 ± 50 rpm and degassing...

A smart home circuit breaker system comprising: current input means adapted to input current, between line and earth, of a pre-determined strength value through electrical supply of circuits in order to assess the loads in a defined electrical circuit system; load monitoring means adapted to monitor parameters of a ...

A stroke adjustment mechanism disposed within a housing of a circuit breaker comprising a lead screw, an outer end of the lead screw being threadly engaged to a nut disposed outside the housing, the nut being rotatable by a handle to cause horizontal slidable movement of the lead screw in the housing, and an auxilia...

Trip coil supervision circuit for a circuit breaker. The circuit breaker comprises a trip coil (1) having a first terminal (2), a second terminal (3) and a third terminal (4). The first terminal is connected to the negative terminal of a DC source and the second terminal is connected to the positive terminal of the ...

A blanking plate (1) for covering the turret (2) of a power transformer, the blanking plate (1) comprising a opening (3) and a terminal board (6) holding at least one terminal (7) such that a portion of the terminal (7) remaining disposed below the terminal board (6) and the rest above the terminal board (6), the te...

A testing assembly to estimate (by observation and calculation), the diffusion time constant of moisture from cellulosic insulation into oil, said assembly comprises: a housing adapted to house said oil; at least two sensors, in said housing, adapted to monitor moisture as a function of temperature; glass window, on...

A spring loaded pad locating clamping structure adapted to locate a pad onto another element, said structure comprising: a. first elongate element adapted to provide support for said spring loaded pad locating clamping structure; b. second elongate element placed parallel to said first elongate element and space...

An improved three-phase disconnector, said disconnector comprises: three horizontally mounted current limiting fuses, each of said fuses individually being connected to one phase of a three-phase power supply line and further comprising three corresponding striker pins adapted to axially move in an operative first d...

A method for determining pre-arcing time corresponding to a SF6 gas pressure value in a high voltage circuit breaker, the method comprising the steps of determining the values of g associated with a plurality of known values oft and s from the formula g=l95-s*t; wherein g being the gap value between the stationary...

An interlocking system and method for rail tracks by measuring track resistance and rate of change of resistance to prevent train collision. The said system measures track resistance and rate of change of resistance to prevent train collision on the same rail track..

A controller based apparatus for drying condensor bushings containing moist insulating paper, based on microwave energy, said apparatus comprising: chamber means adapted to hold said at least a single condenser bushings with insulated paper, in its wound configuration; vacuum enabling means adapted to create a vacuu...

An external rotor motor axial flow fan (232), the fan (232) comprises an integrally formed shroud (200), a hub (210), and a stationary shaft (222). The hub (210) is formed at the back end (204) of the shroud (200) with the hub (210) having the centrally disposed stationary shaft (222) extending therefrom. A wound st...

A high current rated terminal box with multi-bus ducts, said box comprising: first set of bus bars; second set of bus bars; third set of bus bars; and plurality of collar bar adapted to connect each of said first set of bars to said second set of bars; wherein, said third set of bus bars connect to said second set o...

A system to sense electrical contacts in crosswire position of fluorescent lamps (FTL). The system comprises FTLs positioned in parallel on a crosswire testing table with a cross wire position contact at each of the FTLs such that the angle of the said contact is greater than 110 degrees and a control panel connecte...

DC generator set. The generator set (3) comprises a prime mover having a shaft (2) and a AC generator (3) coaxially cooperatively coupled to the prime mover shaft and an electronic converter. The AC generator comprises a cup shaped permanent magnet external rotor (4) having a cylindrical body (5), a closed end (6) ...

An improved clamping assembly, said assembly comprises: a device located on an insulated cell placed on a heat sink or on a metal island attached to said heat sink; centering pins located advantageously for co-axial location of said insulating cell and said device to be clamped with respect to a pressure spring adap...

A voltage detection sensor for detecting voltage at a transformer winding without contacting conductor portion of the transformer winding is provided. The voltage detection sensor comprises a conductor, an insulating layer surrounding said conductor, and a metal layer disposed over said insulating layer. The voltage...

A method of making a compact AC induction motor having a rated power Q governed by the equation Q α BaviDI2 Li, in which D1 and L1 are the diameter and length of the stator of the motor respectively, and Bav1 is the magnetic flux density in the stator core, the method comprising reducing the diameter of the stator, ...

A silencer mechanism adapted to dampen noise from an adjunct motor adapted to emit exhaust air. The silencer mechanism comprising: a. housing comprising an operative back wall adapted to receive exhaust air from said motor, and an operative front wall adapted to emit received exhaust air from said housing, charac...

An Infra-Red (IR) heater system for curing samples, said system comprising: cylindrical IR tube housing placed across a sample; at least an IR emitter disposed along the inner wall of said cylindrical IR tube housing, said IR emitter adapted to emit IR radiation; plurality of reflectors located at pre-determined pos...

A system and method to detect inter turn short circuit fault in generators, said system comprises: internal network sequence voltage determination means adapted to determine voltage of the internal sequential network; external network sequence voltage determination means adapted to determine voltage of the external ...

A system for locating partial discharge in windings, said system comprises: reference database means adapted to store reference winding response signals for partial discharge pulse durations of time durations selected from a range of predefined time durations, said signals being correlative to various pre-defined se...

An equipment for removing a wound pack from a stator body of an electrical equipment, using a pressing machine which has aligning means adapted to align a pressing machine in an operative horizontal configuration for receiving said stalor body of said electrical equipment. There is further provided a method for remo...

The present invention relates to a hinge assembly for switchgear enclosure. The enclosure includes a box which houses a circuit breaker, the box having a door openable at one end using a known knob and bracket and hinged at the other end using the hinge assembly, which comprises of a fixed member on the door and a m...

An improved electric lamp holder comprising a socket body having a stepped cylindrical assembly with an upper step adapted to receive a lamp from an operative dorsal end, and a lower step adapted to provide electrical connections (to said lamp) from an operative ventral side, said socket body consisting of a hollow ...

A self learning system point-on-wave switching gas circuit breaker, said system comprising: at least a potential transformer per phase adapted to monitor transient voltage parameters; at least a current transformer per phase adapted to monitor inrush current parameters; and processing means adapted to receive each t...

An electrical contact and a method of making the electrical contact, said electrical contact comprising an annular region of said contact being made up of a composition comprising about 50% by weight of Copper and about 50% by weight of Chromium, said annular region having a height in the range of about 3mm to 6mm f...

A method of forming an artificial hotspot in a coil, the artificial hotspot being a localized area on the windings of the coil adapted to get heated faster than other areas on said windings during energization thereof, the method comprising the step of compacting the windings on the coil in a select area on the coil...

The present invention relates to an isolator stuck indication arrangement for sensing an isolator position, connected to a DC supply, comprising of an auxiliary switch for providing signal to position indicator wherein the auxiliary switch is mounted on a shaft operating main contact with a rotation of 120°; and a c...

A hot press machine for curing the coil of a HT(high tension)/LT (low tension) machine, the machine comprising a plurality of platens (1) oriented within the machine such that the coil remaining disposed on the platen (1) and surrounded therewith, each platen (1) being an integrated structure and comprising a plural...

A device for press fitting of a bearing within a bearing hub defined in a fan end shield. The device comprises of a press fitting mechanism that confirms a press fitting engagement between the bearing hub and the bearing by exerting a first pre-defined pressure in a first stroke of operation and a press fitting pres...

An intelligent iron to prevent burn-out, said iron having a sole plate adapted to be heated and adapted to be in contact with a fabric to be ironed, characterized in that, said sole plate includes at least one sensor adapted to sense burn-out condition; control logic adapted to receive input from said at least one s...

A lancing punch holding fixture for use in an Electrical Discharge Machining (EDM) wire cut machine, the fixture comprising a base (1) and a spigot (2) one end (4) of which being held within a hole (3) in the base (1), the spigot (2) comprising a central bore (7) for receiving the lancing punch (8) therein through a...

An improved stator housing for an electric motor, said stator housing comprising: segmented bore, said segments being defined along the inner circumference of said housing, by intermittent depression pockets along predefined zones of its inner circumferential curvature; plurality of hollow foots beneath said stator ...

A cascaded H-bridge multilevel inverter comprising: a plurality of groups of power cells, each power cell comprising a three phase diode rectifier; a direct current bus capacitor; a single phase inverter; and a bypass switch on output side of the power cell; wherein said power cells of each group are connected in se...

An ultra high voltage corona shield comprising a substantially elliptical rigid hollow body, wherein the body has a substantially circular closed top end, a substantially flat open bottom end and an outwardly protruding continuous side wall; a means for handling the body located at the substantially circular closed ...

A system for testing induction motors is provided comprising of a plurality of test beds each one of the test beds housing an induction motor and a sense means to receive electrical signals corresponding to electrical and thermal parameters to be tested. The plurality of signal processing units corresponding to each...

A hydraulic jack system 100 is provided that includes a jack assembly 102 having a jack piston 104 disposed within a jack cylinder 106 and connected to an oil reservoir 108 through a manually operated control valve 110. A first pump 112 and a second pump 124 are connected to the oil reservoir 108. A lever 138 is piv...

A locking mechanism to firmly restrict a moveable contact assembly of a manually operated circuit breaker in an isolation position is provided. The mechanism comprises of a castell lock and key fixed to a framework supporting the moveable contact assembly and a rectilinear plate and an arc plate securely arranged on...

A system and method to detect excitation failures in electric generators, said system comprises: voltage reading means and current reading means adapted to read voltage parameters and current parameters, respectively, from said electric generator; impedance computation means adapted to read instantaneous values of v...

A solid cast resin coil for a transformer is provided comprising a winding structure formed of a first plurality of insulating layers interspersed with two conductor electrodes in radially spaced apart relationship and impregnated with a resin under gravity. The outermost insulating layer of the first plurality of i...

A segmented motor frame for enveloping a motor, said frame comprises: segmented pre-cast plates of a pre-defined curvature, in that, said plates being assembled end to end to form a substantially cylindrical motor frame.

Poly(alkyl ricinoleate-co-alkylmaleimide) having general formula (I): Formula (I) poly(alkylricinoleate-co-alkylmaleimide) wherein "R" represents C10 to C22 straight chain aliphatic alkyl group; "X" represents number of "-CH2-" units and "n" represents number of operating units having pour point depressant ac...

There is provided a compact unit packaging box for ceiling fans, said compact unit packaging box comprises: cubical base adapted to house motor and associated fan assembly; rectangular box adapted to house fan blades, said rectangular box extending from said cubical base; slot in said cubical base adapted to receive...

A core building fixture comprising a frame (1) corresponding to the shape of the core (5), at least one vertical member (2) placed within the frame (1) in the area corresponding to the window of the core (5), a movable horizontal arm (3) fixed perpendicularly to each vertical member (2), the horizontal arm (3) being...

An apparatus with an intelligent compact transformer and an inherent automatic regulating cooling system, said apparatus comprising: a. windings made of hollow metal tubes adapted to allow fluid flow through it, said hollow metal tubes adapted to form windings of said transformer; b. sensor means adapted to sense...

Device for holding the stator body of an AC motor. The device (1) comprises a base (4) having a locating recess (5) at the bottom adapted to locate the base on the chuck of a vertical turret lathe machine and atleast one pair of a tapered spigot aligning portion (6a, 6b, 6c) and a spigot locating surface (7a, 7b, 7c...

Poly (alkyl cinnamate -co-alkylmaleimide) having general formula (I); Formula I Poly(alkyl cinnamate -co-alkylmaleimide) wherein "R" represents C10 to C22 straight chain aliphatic alkyl group; "X" represents number of "-CH2-" units and "n" represents number of operating units having pour point depressant activit...

A circuit breaker operating mechanism for moving a movable contact 4 of a circuit breaker, the operating mechanism comprising a combustion chamber 1 divided into a pair of sub-combustion chambers (6 & 7), an interior tank (15 & 22) held within each sub-combustion chamber (6 & 7) for storing at least one chemical rea...

An electric iron 100 with enhanced safety features is provided with a sensing means disposable within housing 114 and including a transmitter 120 and a receiver 122. The sensing means is capable of generating a first signal in response to electrical communication between the receiver 122 and the transmitter 120 duri...

The present invention comprises of an apparatus for testing fluorescent lamp comprising of a base surface, plurality of holders fixed on said base surface for receiving pair of tube pins disposed at both the sides of said fluorescent lamp, wherein each of the holders comprise of two arms in a shape of an inverted tr...

A shaft locking mechanism for fan covers of motors, said fan cover including a co-planar mounted fan at its one end and an elongate conduit adapted to guide air from said fan, said fan being mounted on a shaft, characterised in that, said mechanism comprises an elongate channel adapted to be co-axially mounted with ...

A transformer with dual high-voltage (star - delta) windings with multiple voltage low-voltage windings, said transformer comprises: at least two high voltage windings, per phase, said two high voltage windings being a first high voltage winding and a second high voltage winding; at least two low voltage windings, p...

A centraL tap adapted to be placed between primary windings and secondary windings of a transformer for controlling the output efficiency of said transformer, characterized in that, said central tap being a metallic open-ended ring.

A liquid nitrogen cooled pancake wound core, said core comprising: core winding assembly comprising a plurality of annular rim shaped foil layers, each pair of adjacent foil layers being interspersed with an annular rim shaped insulation layer, said inner layer rim being spaced apart from said outer layer rim by int...

An impregnation system comprising: a) dipping tank adapted to receive fluid (varnish) from its operative bottom; b) bottom plate, inside said dipping tank, said bottom plate spaced apart from the bottom of said dipping tank and adapted to receive wound stators on its operative upper side, and further adapted to in...

A tool assembly for removal of stator winding from a motor comprising a motor frame and a shrink-fitted stator winding in said motor frame, said tool assembly comprises: a pair of operatively vertically located elongate rods of equal length adapted to be located over said stator winding; and at least an operative ho...

A shunt reactor comprising a core and coil assembly disposed in a protective tank, the core comprising at least one air-gapped central limb (2) placed between two lateral limbs (3 & 4) in a spaced apart relationship therewith, the limbs (2, 3 & 4) held vertically between a bottom yoke (6) and a top (5) yoke, all mad...

A multipurpose intelligent kitchen appliance is provided with plurality of options of grinding, blending, crushing, mixing, churning along with options of material quality. The present kitchen appliance eliminates user judgement and also eliminates human supervision.

An improved spring mechanism with a spring with axial ends, characterized, in that, said mechanism comprising end plates at said axial ends advantageously fixed or wound in to said end plates, each of said end plates comprising lateral holes spaced apart from lateral edges of said end plate and near the operative pr...

A mechanism for guiding and holding elongated windings in an autoclave is provided. In one embodiment of the present invention the mechanism allows loading of plurality of windings such as condenser busher or transformer windings inside an autoclave.

A water dispenser 100 for providing potable water and multipurpose domestic usage water comprises a first water tank 142 disposed within a housing 102 and fluidly connected with a feed water supply, the first water tank 142 having an electrically controlled first heating element 146 disposed therein for selectively ...

A damper system to reduce the over travel of crank wheel rotation after circuit breaker closing operation, said system comprises: cam adapted to be co-axially located with said crank wheel of said circuit breaker assembly, said crank wheel adapted to be angularly displaced, along with said crank wheel; cam mounted s...

Device for holding the stator body of an AC motor. The device (1) comprises a base (4) having a locating recess (5) at the bottom adapted to locate the base on the chuck of a vertical turret lathe machine and atleast one pair of a tapered spigot aligning portion (6a, 6b, 6c) and a spigot locating surface (7a, 7b, 7c...

A jig for assembling moving contact assembly, which moving contact assembly being comprised of at least an adapter component, at least a moving arc contact component, at least a piston rod component, at least a rod end component, at least an auxiliary nozzle component, said jig comprises: first bracket comprising an...

A sensing system for sensing field current of generators, and a generator with a sensing system for sensing field current of said generators, said generator comprises: shaft protruding from said generator, said generator having rotating parts housed in an exciter frame; rotating rectifier unit placed lateral to said...

An aging electrical contact for drawing power from an electrical plate in an aging machine of lamps is described. In one embodiment the aging electrical contact comprises of a cylindrical roller which would run on the electrical plate during the aging process for drawing power.An aging electrical contact for drawing...

An assembly for electrically isolating yoke stud 120 from a frame of a core-frame assembly 100 within a transformer includes a pair of top frames 116 and bottom frames 118 connected to a pair of opposite sides 112 of the yoke at a top end portion and a bottom end portion thereof and including a yoke insulating membe...

A totally enclosed fan cooled AC induction motor. The motor (1) comprises a rotor (2) mounted on a shaft (3) and rotatably disposed within a stator (4) which is located in the motor housing (5). The shaft is rotatably fitted in a pair of endshields (6, 6) each fitted at each end of the motor housing. A fan (8) is mo...

A method of diagnosing the nature of mechanical faults in a faulty transformer is disclosed. The method comprising the steps of obtaining a magnetic model for a transformer that is of the same make as that of the faulty transformer; converting the magnetic model in to an equivalent first electrical model; performing...

An anti-seismic mounting assembly for a transformer (1) provided with wheels (2), the wheels being mounted on a rail (4) or a rigid surface, the assembly comprising a plurality of support frames (6-9) and at least one packing plate (15) corresponding to each support frame (6-9), each frame (6-9) having a bottom surf...

A mechanism for sensing aberrations in coating machine, said mechanism comprises: sensor adapted to sense aberrations in coating machine working, said sensor being located in a part of said machine where tube inversion is completed; and sensor operated relay, said relay adapted to actuate a stop mechanism for stoppi...

A torch and torch light, said torch being a manual power actuated torch comprises: luminous source with pre-desired intensity, and adapted to receive power from a power generating mechanism; alternation mechanism being said power generating mechanism adapted for generation of power with the help of air pressure, sai...

The present invention discloses curable composition comprising modified unsaturated polyester with bismaleimide having improved thermal stability and its use as casting resin in the manufacture of transformer and other electric components. The cross-linked products obtained by curing the said compositions, which sim...

An apparatus for making powder from a slurry comprises a cylindrical chamber enclosed by a cylindrical wall and two parallel side walls, a thermally insulated jacket wrapped around an outer surface of said cylindrical wall, the jacket being filed with a thermic fluid and comprising a plurality of heaters dispose...

A shorting link mechanism for induction motors, said induction motors receiving cable power cables through cable receiving means, each of said received cables adapted to terminate on a corresponding terminal box, said terminal box further being provided with a substantially tubular element running across said termin...

An apparatus for checking the working condition of a dosing nozzle having a dosing head and a dosing pin with a notch at its operative bottom end for holding Mercury, said apparatus comprising: a. first lidded vessel, containing Mercury, adapted to receive said dosing nozzle wherein said dosing head rests gripped...

Sulfonated-(poly-(benzyl cinnamate ester-co-maleic anhydride)) copolymer have high proton conductivity. This polymer is used to prepare a proton exchange membrane by conventional method. A proton-conducting polymer membrane of the invention is used between two electrodes in fuel cell to achieve high proton conductiv...

The present invention relates to a holder for copper rod and comprises of a metal case fixed to an exhaust bench in order to receive electrical connection at one end and to accept said copper rod at the other end. The metal case acts as the base for the copper rod.

A novel air guide for motors for guiding air from a motor and stator to a heat exchanger is provided thus there is no need to change the position of internal fan to maintain the air flow. The air guide comprising an inner middle ring in communication with an overhang of said stator for cooling said stator; and a top...

Method and heater for uniformly curing a resin impregnated electrical bushing. The method comprises precuring a resin impregnated wound structure of the bushing by heating simultaneously equal sections of the wound structure from bottom to top of the wound structure internally through the hollow conductor at progres...

Tracking and erosion resistant compositions of Ethylene Propylene Diene monomer (EPDM) or rubber comprising apart from other conventional additives, silane treated calcined clay and zinc salt of fatty acid. The composition has high voltage electrical insulating characteristics and which is readily moldable into comp...

An apparatus for measurement of total gas content in oil, said apparatus comprises: metal container adapted to receive oil; heating assembly associated with said metal container, said heating assembly being adapted to heat said oil in said in said metal container; stirring assembly associated with said metal contain...

A protective cover / canopy for a motor, said protective cover / canopy comprising: a. top cover adapted to form a canopy over said motor; b. at least one mounting means, placed in a pre-defined configuration, adapted to hold said top cover spaced apart from said motor; and c. at least one lifting hook adapted t...

An assembly for providing improved thermal performance in winding based electrical equipment, said assembly comprising: operative bottom plate comprising a hole located on it, said bottom plate further comprising sector shaped blocks of pre-defined thickness circumferentially arranged about said hole; and additional...

A low noise transformer with enhanced cooling capability, said transformer comprises: at least a dimpled sheet with noise damping material at pre-defined locations in said transformer, said noise damping material being put in the dimples of said dimpled sheet and being placed at pre-defined positions in between core...

A system for monitoring and controlling a plurality of street lights, the system comprising a micro processor based controller (1), at least one Infrared (IR) sensor (2) interfaced with the controller (1) for detecting IR rays from the sunlight, at least one Light Sensor (3) interfaced with the controller (1) for de...

A lead termination assembly comprises a substantially t-shaped tubular assembly further comprises the layers of: innermost layer formed of an elongate metal tube electrode; intermediate layer formed of paper insulation enveloping said elongate metal tube electrode; and outermost layer formed of pressboard barrier in...

A mixing and grinding apparatus comprises: (a) vessel mounted on its axis such that the axis is in an operative horizontal plane, said vessel having plurality of blades or ribs on its internal circumferential wall such that said ribs extend towards the centre of the cylindrical vessel; (b) a dual rotary mechanism co...

A self aligning bearing block comprising a substantially circular through recess in said block, ball raceway adapted to be fitted in said through recess, such that it lines the inner circumference of said recess, hollow ball with operatively laterally clipped-off sides adapted to receive a shaft through its operativ...

Poly-(behenyl  undecylenate-co-maleic  anhydride)dibehenate  having general formula (I) : Formula (I) wherein "n" represents the number of repeating units having pour point depressant activity in vegetable oil.

A rotopainting machine comprising a supporting frame having a pair of vertical supporting structures; a horizontal frame pivotably connected to the pair of vertical supporting structures, the horizontal frame having a front wall and a rear wall, and a plurality of having connection ports; a plurality of tank holding...

A cooling system for transformers, said cooling system comprises: transformer housing with stiffener elements running along the exterior of said housing, characterized in that, said stiffener elements are interconnected to each other by means of interconnecting pipe elements to provide a fluid passageway between the...

A filament pick-up assembly for a mount machine comprising a pickup tube further comprising a substantially linear hollow tubular component with a substantially orthogonally curved end portion having a hollow tubular component adapted to form a seamless pickup assembly.

A water heaters with an in-built scaling protection system for heating element, said water heater comprises: tank with an outer body, said tank being adapted to receive water from an inlet pipe and to pass out heater water through an outlet pipe; heating element, within said tank, said heating element being envelope...

An electrical connector to connect electrical utilities to a power source is provided. The electrical connector comprises of a first member and a second member connected to each other on a hinged support provided in the middle of the second member and allows for a relative rotation between the members, a spring disp...

An unsaturated polyesterimide polymer concrete composition comprising resin system consisting of the unsaturated polyesterimide resin; styrene monomer; silane; and pigment and the filler system consisting of silica having particle size 40 to 800μ; Aluminium trihydroxide; and Rutile in combination with hardener. The ...

An alignment guide tool for a rotor, said tool being an annular rim with a top operative stepped surface with at least a step of said stepped surface in correlation to the height of rotor bar extending beyond a short circuit ring within which said rotor bars are to be brazed.

An electric iron with an automatic lifting and wrinkle clearing mechanism, said iron comprising an arm surrounding a body of said electric iron, said arm being adapted to be fixed to said at its operative rear end and further adapted to extend beyond the operative front end of said electric iron in a spaced apart ma...

An improved bellow, with indicating means, being mounted over an oil tank having oil and adapted to be fitted within a transformer, tor indicating oil level along with maintaining oil pressure. The said bellow with indicating means-comprising oil housing adapted to store oil within said transformer; bellow adapted t...

An induction iron is provided for pressing clothes or garments. The induction iron comprises of a moveable unit and a stationary base unit. The moveable unit formed of a ferrous sole plate as a bottom surface and a top plate above defining a sealed enclosure filled up with a heat retention fluid and a handle made ou...

The invention relates to an encapsulated inductor. The inductor comprises an inductor coil and a core disposed in the coil and encapsulated with an electrical grade nanocomposite comprising organically modified silicate nanoclay in an amount of 0.5% to 5% by weight blended with unsaturated polyester resin in an amou...

A fan enclosure for guiding external air into a heat exchanger of a CACA (closed air circuit air cooled) machine, the heat exchanger mounted atop the machine, the external air sucked in the enclosure by a cooling fan mounted on one end of the machine shaft protruding from the machine, the enclosure comprising a bott...

A system for manufacturing an improved induction motor, said system comprising: • a short circuit ring comprising a first hollow radial element and a second hollow radial element superimposed on said first radial element characterized in that, said second radial element having radially dispersed spokes of pre-defin...

An operating mechanism for combined operation of a disconnector switch and an earthing switch of a Gas Insulated Switchgear (GIS) is provided where the disconnector and earthing switches are disposed along a common axis and each comprising a fixed contact and a movable contact. The operating mechanism comprises a ro...

The motor (1) comprises a cylindrical rotor (2) rotatably disposed within a stator (3). The rotor comprises a rotor body (6) having a plurality of electrical grade steel laminations (6) press formed together and mounted on a shaft (7) with end plates (8) pressed against the end of the rotor body. The end plates each...

A circuit interrupter comprising a housing enclosing a fixed contact and a movable contact operatively coupled together through a collapsible mechanical linkage, the housing comprising an integrally form casted body having a movable contact holding portion and a fixed contact holding portion disposed in a spaced apa...

A testing tool for testing shunt reactor having areas including at least a main winding, at least a first auxiliary winding, and at least a second auxiliary winding, said tool comprises: input means adapted to receive input from pre-defined areas said shunt reactor, said input being pulses or signals generates at le...

A cable termination mechanism adapted to terminate cable, said mechanism comprising: a. first ball and socket mechanism with a first ball adapted to receive a first cable for termination and further adapted to move within a first socket thereby providing freedom of movement for said terminated cable; b. second b...

A strip Flitch Plate (Limb Stiffener) for spacing apart two plates, said strip flitch pfate being a mufti-strip assembly comprises: at least two elongate strips placed adjacent each other; and end plates adapted to hold ends of adjacent said at least two elongate strips in a joint manner, said end plates being provi...

A coating composition wherein the said composition shows antistatic property. The composition comprising hydroxyl functionalized multiwalled carbon nano tube dispersed in polyurethane in a solvent-based system. The coating composition can further comprise additives, fillers and the like.

A cooling system for electrical apparatus having oil, said system comprises: chamber filled with cooled nitrogen; oil radiator engulfed in said cooled nitrogen, said oil radiator adapted to receive said oil for exposing said oil to said cooled nitrogen over a larger surface area, thereby causing exchange of heat bet...

Dialkyl ester of poly-(alkyl oleate-co-maleic anhydride) copolymer having genera] formula (I) : CH -CH -CH CH- (CH,),   C=O C=0 OR OR CH, OR n Formula (I) wherein R represents C10 to C22 straight chain aliphatic alkyl group; and n represents the number of repeating units. having pour point depres...

A method to determine the location of partial discharge in a transformer using a single UHF antenna is provided. The location of the partial discharge is identified by first creating a database of frequency responses for simulated partial discharges at pre-determined locations. A statistical co-relation is performed...

An air filtering support for closed air circuit air cooled machine having a plurality of air ducts placed one after another, said support comprising at least a disc adapted to partially block air for diversion said blocked air to air ducts placed prior to said disc, and further adapted to partially allow air for div...

A vacuum contactor assembly includes a housing, at least one vacuum casing disposed within the housing and including a fixed contact and a movable contact separable from each other in spaced apart relationship, a portion of the movable contact protruding outwardly from the vacuum casing, an actuating means disposed ...

A modified universal blender comprises a blending chamber provided with an inlet passage valve which is opening for material charging; an outlet passage valve which is opening for discharging homogeneous mixture; a vacuum creating arrangement; a stirring arrangement provided with helical blades and a means for mater...

A modular add-on mould for induction cooktop comprises: a first plate adapted to be a flat plate, said first plate being an operative bottom plate of said add-on mould; and a second plate adapted to be a curved plate, said second plate being an operative top part of said add-on mould, curvature of said second plate ...

A multi-stage centrifugal pump with hybrid diffusion technology, said pump comprising: at least a first stage for said multi-stage centrifugal pump comprising at least a suction annular casing, said first stage further comprising at least at least a first impeller; at least an end stage for said multi-stage centrifu...

A system and method for security oriented optimal placement of phasor measurement units in a power system, said system comprises: transient stability analysis module adapted to obtain observed parameter values for pre-defined contingencies for said power system; fuzzy logic controller module adapted to identify the ...

Winding assembly with cooled superconductor tapes having localised inter-turn insulation, said winding assembly comprises: one or two or more superconductor tapes being wound together over a bobbin in order to enhance the current carrying capacity per turn, said tapes being helical coils; plurality of sets of rods, ...

A geyser reliability testing system adapted to test reliability of said geyser and its elements, said system comprises: input means adapted to allow a tester to input at parameters in relation to working of said geyser and its elements; mode selection means adapted to select modes of operation for said system in ord...

An electric iron reliability testing system adapted to test reliability of said electric iron and its elements, said system comprises: testing table adapted to test a plurality of electric irons simultaneously, said testing table comprising: flat surface over which fabric that is to be ironed is laid out such that i...

An apparatus for measurement of speed of a second contact mounted on a threaded pipe of a circuit breaker device, said apparatus comprising: Transducer adapted to be co-axially fitted in line with said second contact, said transducer extending out of said threaded pipe; Connection means adapted to connect an operati...

A non-aerofoil fan blade being defined by at least a leading edge adapted to be coupled to a fan hub. at least a trailing edge adapted to be coupled to a fan hub, and at least a rounded tip adapted to mate said at least a leading edge with said at least a trailing edge, said rounded tip spaced apart from said fan hu...

A collapsible high voltage corona shield for current transformer, said shield comprises: dual hemi-barrel shaped elements adapted to form a barrel shaped complete structure with a relatively narrower top, a relatively broad middle segment and a relatively narrow base, said barrel shaped structure being a substantial...

An integrated fastening element adapted to fasten mechanical elements, said element comprises: screw head and screw body extending thereto from said screw head, said screw head having a first diameter and said screw body having a second diameter, wherein, said second diameter is bigger than said first diameter, said...

An efficient cooling system for motors, said cooling system comprising: a. air entry means adapted to facilitate entry of air into said cooling system; b. air exit means adapted to facilitate exit of air from said cooling system; and c. plurality of curvilinear (baffle) strips adapted to guide air from said ai...

A telescopic table lamp adapted to be mounted from a table, said telescopic table lamp comprising: a. first cylinder adapted to be hanging beneath said table through an opening in said table; b. second cylinder adapted to be telescopically engaged with said first cylinder; c. engaging and disengaging means adap...

This invention relates to a control system and method which uses a Sine-PWM inverter system and proposes a control system which can reduce any chosen dominant lower order harmonic.

A jar with loader flap, said jar comprises: first lid which covers said jar and securely fits atop said jar; and opening at the operative top portion of said first lid, characterised in that, said opening being adapted to be covered by means of a flap, said flap being a loader opening cap for facilitating entry of m...

An improved shield fixing mechanism for bushings of a transformer, said mechanism comprises: an annular concentric inner ring with J-slots provided around said ring on the wall of said ring such that each of said slots includes an opening from an operative top side of the ring, wherein, each of said slots are adapte...

A water heater tank assembly and heating element for multi-oriented mounting and increased heating efficiency, said assembly including a tank assembly adapted to serves as the insulated casing and the general body for said water heater assembly, said tank assembly being a substantially disc shaped assembly, having a...

A heat dissipating high-bay luminaire comprises: an annular disc plate adapted to co-operate with a top surface of a ballast placed in the luminaire head section, said annular disc plate being of designed dimensions such that there is maximum contact between said top surface of said ballast and the underside of said...

A system and a method for designing radiator equipment, said system comprises: first input means adapted to provide radiator height input; second input means adapted to provide number of segments into which said radiator height is to be divided; dividing means adapted to divide said first input radiator height into ...

A worm and worm wheel drive for energy storing device, said device comprising: a worm gear adapted to be angularly displaced about its central axis, resulting in its rotation; a worm element adapted to be driven by a motor for its angular displacement along its angular displacement axis; a spring wheel adapted to be...

An energy storing device comprising: a planetary gear train (4) comprising a sun gear (5), plurality of planet gears (8), a ring gear (7) and an arm (6) wherein said plurality of planet gears (8) are rotatably mounted on said sun gear (5) and connected to each other by said arm (6); a driving mechanism (1) coupled t...

Linear induction drive for operating the disconnector or earth switch of a gas insulated switchgear. The induction drive (1) comprises an enclosure (7) located outside the housing (4) of the switch (A) and having a hollow body defined by a front end wall (8) and a rear end wall (9) spaced apart from each other and a...

A method and system for estimating DC bus voltages of series connected h-bridge cells of a multi-level cascaded inverter comprises comparing the switching reference waveform with a set of pre-defined constants to determine time periods of switching activity in each of the h-bridge cells, encoding output of the compa...

The present invention relates to a method, system and computer readable medium for detecting winding faults in transformers. The method comprising the steps of: measuring a reference response by applying an impulse voltage less than a standard voltage to said transformer; measuring a first fault response by applying...

An earth switch contact sub-assembly adapted to provide earthing contact between an earth metal plate and finger contacts, said assembly comprising: a. a pair of finger contacts with its mating faces facing each other in a spaced apart configuration; b. earth plate adapted to be slid into the spaced apart configu...

The rotor for an electric machine where in the rotor design comprising of multiple sectors having flux insulators having central part normal to quadrature axis and first and second ends across the direct axis and cage slots distributed along the circumference of the cross section of the rotor. The cage at the end of...

A castle lock mechanism, said mechanism comprising: a cam assembly which comprises an operative upper cam co-operating with an operative lower cam, said upper cam being a slotted cylinder with a disc base, said slot in said cylinder being adapted for allowing entry of an external key in order to engage said cam asse...

A modular enclosure for holding a plurality of Printed Circuit Boards (PCB), said modular enclosure being adapted to provide EMI / RF shielding and IP protection, said enclosure comprising: housing with extruded barrier sheets, each barrier sheet running along the length and width of said housing, said barrier sheet...

A mechanism for a circuit breaker comprising: a sliding pole 7 adapted to be substantially in a vertical position; a sliding rack 13 operatively mounted on said sliding pole 7; a shaft 18 adapted to be substantially in a horizontal position; a pinion 12 mounted on said shaft 18; wherein said pinion 12 is operatively...

A centralizing fixture for flywheel for electrical generator assembly, said fixture being a base platform with a plurality of dynamic support means extending from bottom surface of said base platform, said base platform further comprising a V-shaped operative top surface adapted to provide tangential support to the ...

A multistage load demand-dependant adaptive power management system for charging battery comprises: at least a battery sensor adapted to sense battery condition; at least a loads" sensor adapted to sense load condition; at least a first voltage defining means adapted to define a first pre-defined voltage value in or...

A gauge for testing an end fixture of an alternator housing, said gauge comprising a ring fitted with a pre-defined number of studs protruding from a single operative side of said ring, said studs adapted to be in accordance with pre-defined dimensions and each of said stud located with respect to said adjacent stud...

A hotel winding arrangement for a locomotive transformer, the winding arrangement comprising at least two coils of a predetermined power capacity arranged axially one above the other on a second limb of the locomotive transformer wherein each of the coil serves an electrical load. Reference Figure 2 ...

A closing and charging system for circuit breakers adapted to perform an open-close-reopen operation, said system comprises: a first resilient means operated by a two phase lever located on a pole rod of said circuit breaker, said first resilient means" operative bottom end being fixed with support and its operative...

A fixed contact for isolators and an improved turn-and-twist isolator mechanism, thereby, said contacts comprising: a pair of opposing, spaced apart, co-axially aligned contacts (upper contact and lower contact) having a pre-defined mating surface with helical slope and recessed surface; and second cylinder ensconce...

A bearing housing for commutators" seasoning plant, said housing comprises: a first element with an operative first inner semicircular machined side; a second element with an operative second inner semicircular machined side, said operative first inner semicircular machined side adapted to sit atop said operative se...

A ratchet and pawl based drive mechanism for spring loaded circuit breakers, said mechanism comprising: at least a ratchet charging wheel adapted to be coupled with a closing spring and further adapted to provide momentum for charging and discharging of said closing spring of said spring loaded circuit breaker, char...

A testing equipment for receiving and testing motors, said testing equipment comprising: a. mechanical jig comprising at least two adjacently located mounting means, each of said mounting means adapted to mount a motor to be tested; b. electronic testing means adapted test the electrical parameters of said moun...

A vacuum impregnation plant for simultaneously impregnating stator and rotor, said rotor having extending shafts with an operative upwardly extending shaft and an operatively downwardly extending shaft, said rotor adapted to be ensconced within said stator, said plant comprises: a vessel with a first drum / cylinder...

A support mechanism for efficient ejection of segmented lamination, said mechanism adapted to be used in a inverted compound blanking dies for punching the segmented lamination using a punching die, said mechanism comprising: a. at least a segmented lamination template, adapted to be placed under said segmented la...

ABSTRACT A modular rod type resistive superconductor fault current limiter equipment, said equipment comprisesa poly-sided elongate (rod shaped) substrate adapted to host a plurality of strips of superconductors which are axially aligned, such that there is at least one superconductor strip along one side of the po...

A modular plate type resistive superconductor fault current limiter equipment, said equipment comprises: plate-type substrate adapted to host a plurality of strips of superconductors linearly aligned, along the length of the plate, parallel to one another in a spaced apart manner; and an assembly for stacking a plur...

A motor housing with an air chute for providing an air flow guide, said air chute being a projected boundary wall jutting operatively inwards from said housing, said wall being made of: dual parallel placed length-wise walls which are inwardly curvilinear, in that, the curve forms a substantial trough along said len...

A non-linear dynamic model is proposed for Single Phase Permanent Magnet Brush-Less DC (SP PM BLDC) motor to improve simulation time compared to transient finite element model and finite element co-simulation model. Model uses a look up table of EMF constant and cogging torque obtained from two dimensional static fi...

An improved high-bay luminaire which comprises: luminaire body (reflector) which houses a bulb from where illumination occurs; luminaire head (control gear housing) including electrical ballast. Said ballast being fixed on a gear tray; characterised. in that, there are provided a plurality of equi-angularly located,...

An end cover for motors, said end cover being adapted to be placed atop a motor with heat exchangers located laterally with respect to said motor, said end cover comprises: a first lateral channel and a second lateral channel spaced apart from each other to form a spaced apart region, therebetween, said first latera...

A bulb with a secure fit between its metal cap and glass part, said bulb comprising: glass part of said lamp adapted to be provided with a slot at its operative bottom side; metal sleeve adapted to be inserted co-axially in said slot, resting at the operative top of said slot said sleeve being soldered in said slot ...

The designing system and method is adapted to predict whether cracking due to shrinkage of material or due to solidification of material shall take place. The system of this invention aims to provide a crack-free design of said component. A designing system and method for casting / moulding processes in relation to ...

An efficient heating appliance; the appliance comprises a heating tank assembly, base plate fitted with a heating element and an inlet, and an outlet pipe; said assembly including a tank assembly adapted to serve as the insulated casing and the general body for said water heater assembly, said body with a pre-c...

A rotor magnet ring testing device comprising a drive motor (2) vertically disposed and mounted in a support frame at the base (6) thereof, a ring holder (3) dimensioned and profiled to receive and hold a rotor magnet ring (15) to be tested and mounted on the drive motor shaft (11), a stepper motor (5) mounted at t...

A double motion circuit breaker comprises a housing enclosing a driving contact and a driven contact disposed in a spaced apart relationship and relatively movable toward and away from each other, the driving contact being actuated by an operating mechanism of the circuit breaker, and a mechanical linkage coupled to...

A low noise and low loss fan cover system, said fan cover comprising an operative lower circular portion housing a fan, characterised in that, the fan centre is horizontally offset from the centre of said lower circular portion of said fan cover, said offset being in a direction pre-defined in accordance with fan ro...

An energy efficient portable lighting system comprising: a. dual-part body lighting system with a first swiveling mechanism attaching a first part of the dual-part with a second part of the dual-part, each of said body parts each having an inner mating surface, with said inner mating surfaces adapted to face eac...

A pedestal fan comprising: a fan motor mounted on a telescopic shafted adapted to slide into a base shaft connected to a base, characterized in that, a spring support mechanism adapted to abut said telescopic shaft at its operative bottom, within said base pipe, in order to damp the load of said motor through said t...

A system and a method for providing a bypass mode operation in single phase AC-AC matrix converter, for providing high voltage to a load, said system comprising: • at least a first set of solid state devices in series with each other and cumulatively, in parallel to said load; • at least a second set of solid stat...

An improved rotor lamination comprising vent holes surrounding an axial hole, with a plurality of rotor laminations stacked to form a rotor, characterised in that, said vent holes are serrated vent holes, with serrations at their circumferential edges. There is also provided an axially ventilated machine consisting ...

A multi-phase support insulator element for Gas Insulated Switchgear (GIS) equipment, said element being a disc element including three hollow projections equi-angularly distributed about a radial axis of said disc element, said hollow projections being spaced apart from each other and spaced apart from the circumfe...

A method for making oil impregnated paper insulation transformer. The transformer is loaded in a metallic chamber (2) from the front of the chamber which is thermally internally insulated and heated with air at 100 -110°C recirculated in the chamber for a predetermined period of time. The transformer is further ...

A terminal stud for use in an electric motor, said terminal stud comprising an oblong body made of electric insulating material and adapted to be fitted in a terminal box of the electric motor and a plurality of terminals located in said oblong body electrically isolated from one another and extending from either si...

A pre-insertion resistor mechanism adapted to damp motion of a parallely placed main interrupter actuated by a primary actuating shaft, said mechanism being operated by said primary actuating shaft, and said mechanism comprising: first shaft which includes a telescopic shaft adapted to telescope in and out of said f...

A current collector pad adapted to be fitted between insulator bushing and supply cable for an electrical assembly, said pad being a substantially disc shaped member having a first disc, a co-axial polygonal disc atop said first disc, and a second coaxial disc stop said polygonal disc, each of said discs having prog...

An electromagnetic tripping mechanism (1) of a circuit breaker. The tripping mechanism comprises a pair of tripping coil assemblies (2, 3) mounted on a frame (4). One tripping coil assembly comprises a first electromagnetic coil (5) and a first plunger (6) reciprocally disposed within the first electromagnetic coil ...

An electromagnetic tripping mechanism (1) of a circuit breaker. The tripping mechanism comprises a first tripping coil assembly (2) and a second tripping coil assembly (3) co-axially disposed and mounted on a frame (4). Each of the tripping coil assemblies comprises an electromagnetic coil (5) and a plunger (6) reci...

The invention relates to a pedestal fan incorporating an equipment for eliminating the noise and vibration, said equipment comprising a first part and a second part; wherein the first part further comprises of a U-shaped region for gripping the telescopic shaft of the pedestal fan and a straight region connecting th...

An electrical socket and switch combination (1) is provided. The combination comprises an electric insulator material shutter (19) slidably disposed between the socket base (7) and the front cover (3) thereof. The shutter is provided with openings (23) in the same layout as the terminal barrels (17) in the socket ba...

A method of making segmental compound blanking tool elements. The method comprises the steps of drilling clamping holes in a first blank of segmental lamination corresponding to a punch in the inner portion thereof and drilling clamping holes in a second blank of segmental lamination corresponding to a die in the ou...

An improved rotor comprising: plurality of bars within said rotor, characterized in that, at least a bar is adapted to be fitted with an extension plate with a terminating mechanism adapted to terminate recipient wires onto said bar by means of said extension plate.

A silencer mechanism for heat exchangers, said mechanism comprising: a. air inlet means adapted to allow entry of air from an associated assembly; b. air outlet means located on walls of said silencer mechanism for providing exit of said entered air; characterized in that, said silencer mechanism includes a stre...

A suspension rod for a ceiling fan comprising shaft adapted to hold said fan; at least a pair of laterally located linear slits on said shaft, said pair being located diametrically opposite to each other, and said slit having its starting point at operative bottom of said shaft and having its end point at operative ...

A trip trigger for a circuit breaker comprises a primary arm and an auxiliary arm pivotally connected together in a scissor like arrangement, each of the primary and auxiliary arms having a first end and a second end disposed at opposite sides of a bivot point, the first ends of said arms being connected to each oth...

A grease-packed bearing retaining mechanism for a shaft with a medial axial end and a lateral axial end with bearings at each of said ends, said mechanism comprising: medial retaining mechanism comprising a machined step on said shaft, at its medial end, which forms a shoulder on said shaft and a circlip adapted to ...

An improved maintenance-friendly high-bay luminaire comprises: luminaire body (reflector) which houses a bulb from where illumination occurs; and luminaire head (control gear housing) including electrical ballast, said ballast being fixed on a gear tray, said luminaire head being a substantially cylindrical housing ...

A regenerative pump with floating impeller comprising: an impeller on shaft , said impeller being a floating impeller adapted to provide clearance between impeller bore and shaft such that impeller can float only in the woodruff key area, thereby keeping said impeller in centre position between suction casing and d...

A self clamping leak tight LED street light assembly (1) comprising an enclosure enclosing a LED array and formed of a bottom cover (2) and a top cover (3). Both the bottom and top covers comprise guide means (13, 14) for guiding the bottom cover and top cover towards each other and self clamping means (7, 8. 11, 12...

A testing device for simultaneously testing the dimensions of a plurality of profiles of a work piece (1), the device comprising a frame (9) adapted to hold the work piece (1) on a top surface (7) thereof, a dial indicator (10, 11, 12, 13) corresponding to each profile (3, 14, 4, 5) of the work piece (1) to be teste...

N/A

A motor including a shaft extending from a drive end of said motor including a coaxial bearing, said bearing borrowing support from a bearing housing which is a disk shaped assembly, said motor comprising a supplementary lubricant based runner element for bearing assembly, said element further comprises a first annu...

An apparatus for fixing controller to stator, said apparatus comprises: a swiveling fixture adapted to receive a stator, with an orthogonal vertical shaft, from an operative lower side of said fixture, said fixture having an open slot on its operative upper side in order to receive a controller assembly through said...

An RTD mounting equipment adapted to house a RTD and further adapted to be fitted on a core assembly, said equipment comprising a cylindrical body with an inner annular recess at its operative top portion, thereby providing a step and an inner cylindrical concentric body, such that a flanged upper cylindrical body o...

A quantum logic controller system for controlling pre-defined lighting equipment in a defined environment, containing a plurality of lighting equipment, said controller comprises: zone defining means adapted to define said defined environment in terms of placement of illuminating articles in said defined environment...

Lamps for exhibiting enhanced color rendition where inner side of the outer envelope of the lamp is coated with the powder blend comprising either YV04: Eu3+; or (Sr, Mg) P04:Sn2+; or A1203; or Y203; orY203:Eu3+; or (LaCe)P04 :Tb3+; or BaMgAl|0Oi7:Eui+; or CeMgAlnO19:Tb3+ or combination thereof. The lamps show incre...

An automatic superconducting tape winding machine (1) comprising a winding former (2) disposed for rotation about a horizontal axis. A winding spool (5) is slidably mounted on a holding shaft (7) disposed in the proximity of the winding former vertically inclined. Also a sliding movement regulator means (4, 14, 16) ...

A skewed stator (1) for an electric motor. The stator comprises a cylindrical hub (2) with a motor shaft hole (3) at the center thereof and a plurality of stator core laminations (8) stacked one above another around the hub at a skewed angle. The core laminations each have punched therein a center hole (9) correspon...

A ceiling fan motor and a method of making the same. A rotor ring (1) is made with magnetic material laminations by stacking the laminations one above another and riveting or stitching them together. The rotor ring is die casted onto aluminium (2) and integrated into the top end shield (3) during pressure die castin...

A switching unit of a ring main unit. The switching unit (1A) comprises a main vacuum interrupter (2) and a pair of auxiliary vacuum interrupters (3 and 4). The main vacuum interrupter is without the fixed side end plate. The fixed electrode (7) and fixed side seal cup (6) of the main vacuum interrupter are hermetic...

A closed air circuit air cooled high voltage electric motor. The motor (1) includes a forced ventilation arrangement (2) comprising a shell and tube heat exchanger (3) mounted on the enclosure (4) of the motor. The shell (5) of the heat exchanger is connected to the enclosure of the motor through openings (6) provid...

A busbar and a method of manufacturing the same. The busbar (1)comprises a conductor (2) and an electrical insulation comprising a flame retardant low smoke (FRLS) thermoplastic material coating (3) of 1.00 to 1.25 mm thickness applied on the conductor. Also a method making the busbar comprising degreasing a conduct...

A method for joining the two shrouds of an impeller comprises the steps of piercing a hole (9) in one of the said shrouds (2), projecting the periphery of the hole (9) or a portion thereof axially outwardly from said one shroud (2), punching a hole in the other shroud (1) for receiving said projection, inserting the...

A method and an apparatus for batchwise vulcanization of the rubber insulation of an electrical winding. The method comprises carrying out vulcanization of the rubber insulation of the electrical winding with compressed air at a pressure of 5 to 6 bars and at 170 - 180°C, wherein the compressed air comprises one par...

An improved external rotor BLDC motor (1) comprising a rotor formed by four sets of rotor magnets. The first set of rotor magnets (17) are located around the inner circumference of the cylindrical stator core (11) of the motor and describe an air gap with the inner circumference of the stator core and are parallel t...

A improved totally enclosed fan cooled AC induction motor (1) comprising a plurality of open ended heat transfer tubes (18) located spacedly within each of the air pockets (13) along the length thereof. The heat transfer tubes open into the drive end cover (10) and non-drive end cover (11) of the motor at the ends t...

A mechanical device (1)for handling the porcelain insulator (12) of an electrical Equipment. The device comprises a beam (2) provided with holding means (6) at the center thereof and a pair of arms (7,7) each ar each end thereof. The upper ends of the arms are held in the beam with the arms being movable sideways ab...

A coating system for steel, the coating system comprising a zinc based primary coat and an outer wherein the outer coat comprises a nanocomposite of polyurethane resin and modified clay.

A self-jigging vacuum interrupter comprising a fixed side subassembly vacuum tight brazed at one end of a ceramic bottle. The fixed side subassembly comprises a fixed side electrode passing through a fixed side end cup and brazed thereto. The fixed side end cup comprises locating means for locating the fixed side su...

A mixer grinder (1) comprising at least two electromagnetic locks (14, 14) for the utility jar (12) thereof. The locks are located in the utility jar locating collar (11) of the mixer grinder diametrically opposite to each other. (Fig 1)

A base mount for a light weight pump motor assembly (6) comprising of a flat lower base (1), one end of which projecting convexly and extending along the length of the lower base (1) and maintaining a clearance therewith to form a resilient upper base (2) upon which said light weight motor pump assembly (6) being ad...

A self driven reciprocating type water pump (1) located on an underground water tank. The pump comprises a housing (2) provided with mounting means (2a, 2b) for mounting it on the underground tank and partitioned into two chambers (3, 4) by a partition wall (5) across the length thereof. One chamber (3) is larger in...

A sintering process for the manufacture of vacuum interrupter contacts. The process comprises blending 75% by weight of copper powder and 25% by weight of chromium powder. The chromium powder contains impurities less than 0.7% and oxygen content of 500 ppm - 7000 ppm. The blend is compacted at 600-900 MPa. The compa...

A composition having improved thermal conductivity and room temperature curing with methyl ethyl ketone peroxide. The composition comprises 20% by weight of preaccelerated unsaturated polyesterimide resin including 0.2 - 0.5% by weight of methyl ethyl ketone peroxide and UV additive and 80% by weight of a filler sys...

A self driven vane type water pump (1) located above an underground tank. It comprises a casing (2) provided with mounting means (3) for mounting it on the underground tank and at least one inlet hole (5) and at least one outlet hole (6) in the sidewall thereof along the same line. A rotor (7) is mounted on a shaft ...

A device and method for on-line monitoring of critical current of a superconductor transformer. The device (1) comprises an induced voltage sensor (2) located in the space between the high voltage primary winding and low voltage secondary winding of the transformer and a digital processor (3) having a first input co...

A cryocooler. The cryocooler (1) comprises a compressor (2) having an inlet line (3) provided with an inlet valve (4) and an outlet line (5) provided with an exhaust valve (6). The inlet line and outlet line of the compressor are connected to a cylinder (8) and a regenerator (7) at the top thereof. The cylinde...

The invention relates to a poly(behenyl undecylenate-co-nialeic anhydride)dibehenate having pour point depressant activity in non-edible oil. The invention also relates to a process for the preparation of the poly(behenyl undecylenate-co-maleic anhydride)dibehenate wherein a straight chain aliphatic unsaturated...

An automated aging mechanism for aging retrofit and non-retrofit compact fluorescent lamps, the mechanism comprising a plurality of primary retrofit lamp holders mounted on a holder .block which in turn is mounted on a conveyor belt, leads from each retrofit lamp-holder projecting through the holder block and ...

The invention relates to method of effecting the gelling and curing process of a resin impregnated bushing core by providing the threshold heat energy required for the gelling and curing reaction, from inside to penetrate through the resin to outside surface of the resin impregnated core, thus ensuring a gelling and...

A device for disassembling the stator and rotor of an external rotor brushless DC motor. The device (1) comprises a pair of spaced apart vertical support members (4a, 4b) extending through engaging holes (5a, 5b and 7a, 7b) at the ends of a bottom support plate (6) and a top support plate (8) respectively disposed...

A double ceramic vacuum interrupter (1) and a method of manufacturing the same. The centre flange (4) of the vacuum interrupter is fixed to the centre shield (3) of the vacuum interrupter by mechanical fixing means (5, 6)(Fig 2).

A system and method for monitoring surges in a power transmission line is provided. The system comprises of remote signal transmitter units connected across a surge arrestor unit associated with a transmission tower, to generate and transmit a surge information signal for every occurrence of a surge. A base unit rec...

A cast resin dry transformer and method of manufacturing the same. The transformer coil (1) comprises a low voltage winding (2) wound on a former (3). A dielectric material layer (4) is wound over the outer circumference of the low voltage winding. A plurality of duct inserts (5) placed circumferentially over ...

A fixture for testing a hub type external rotor motor whose lead wires emerge out from its threaded side comprises of a pair of vertical members (6 & 7) mounted on a base plate 8 with a clearance there between for receiving the motor (3), one (7) of which having a slot (16) for receiving the motor shaft therei...

A self driven bellow type water pump (1) located above an underground tank. The pump comprises a housing (2) provided with mounting means (3) for mounting it on the underground tank and partitioned into two chambers (6, 7) by a partition wall (8). The two chambers each is provided with an outlet port (9, 10). A pist...

A rein cast dry transformer coil comprising cooling air ducts (2) integrally formed or cast in the coil at predetermined location. Also a method of manufacturing the resin cast dry transformer coil. The coil is wound on a former with cooling air duct forming rods corresponding to the size of the cooling air ducts to...

A compact transmission tower (1) for electric power systems. The tower comprises a vertical lattice structure (2) made of steel and extended support arms (3) cast with a castable mechanically strong weather resistant and electric insulator material. The support arms are adapted to support multiple conductors and hav...

An improved axial flux external rotor BLDC motor (1) comprises a housing (2) rotatably held around a stationary motor shaft (3) extending into the housing. 4 is a locator sleeve fitted on the motor shaft and comprising a locator rim (5) around it at one end thereof. A stator (6) is fitted over the sleeve with one fa...

An outdoor hollow insulator housing (1A) of an electrical power equipment. The insulator housing comprises as tubular body (2) having convolutions (3) on the outer circumference thereof and mounting end flanges (4) with mounting holes (5). The tubular body with convolutions and end flanges are integrally cast with a...

A self propelled ventilator (1) for an automobile. The ventilator comprises a hollow body (2) having a front wall (2a), a rear wall (2b), a bottom wall (2c), a top wall (2d) and end walls (2e, 2f). The front wall and rear wall of the hollow body are provided with windows (2g, 2g1). A shutter (6) is slidably located ...