Abstract: A termination system for maintaining substantial contact between an electrical conductor element and a terminal element of a circuit-breaker includes circuit-breaker housing, a terminal assembly, a box clamp and a threaded element. The circuit-breaker housing is provided with at least one longitudinally extending guide element configured on an operative front face thereof. The terminal assembly is received inside the circuit-breaker housing and slides along the longitudinally extending guide element for adjusting position thereof with respect to the circuit breaker housing. The terminal assembly includes housing. a box clamp and a threaded clement. The housing of the terminal assembly includes a slot, an opening, an operative bottom cover and a sliding element. The sliding element is configured on the housing and engages with the at least one longitudinally extending guide element lor facilitating relative movement between the terminal assembly and the circuit breaker housing for adjusting the ground clearance.
FORM 2
THE PATENT ACT 1970
&
The Patents Rules, 2003
COMPLETE SPECIFICATION (Sec section 10 and rule 13)
1. TITLE OF THE INVENTION:
"A Termination System for a Circuit-Breaker"
2. APPLICANT:
(a) NAME: Larsen & Toubro Limited
(b) NATIONALITY: Indian Company registered under the
provisions of the Companies Acl-1956.
(c) ADDRESS: LARSEN & TOUBRO LIMITED.
L&T House. Ballard Estate. P. 0. Box: 278. Mumbai 400 001 India
3. PREAMBLE TO THE DESCRIPTION:
COMPLETE
The following specification particularly describes the invention and the manner in which it is to be performed.
A Termination System for a Circuit-Breaker
Field of invention
The present invention relates to the Held of low voltage switch gear. More particularly, the present invention relates to a termination system for a circuit breaker used in low voltage switch gear.
Background of the invention
Generally, short circuiting or overloading in an electric circuit may damage the electric circuit and may cause lire hazards. A variety of safety devices such as fuses and circuit breakers are known for protecting the electric circuits against damages caused by short circuiting and overloading. Fuses are over-current protective devices that are placed in an electrical circuit to protect the control components, wiring insulation, and other equipment connected to the electrical circuit such as motor from damage caused by excessive current and associated heat. However, fuses operate once and are required to be replaced after a single use thereof. A circuit breaker is an automatically operated electrical switch that cuts off electrical flow to an electrical circuit in an event of a possible short-circuit or overload, thereby protecting the electrical circuit and the electrical equipment connected to the electrical circuit against damages caused by short-circuiting or overloading. More specifically, the circuit breaker detects a fault condition and. by interrupting continuity, immediately discontinues electrical flow to the electrical circuit and upon rectification of the fault condition, the circuit breaker is reset either automatically or manually to restore continuity and resume electrical flow to the electrical circuit.
In a conventionally known circuit breaker, the electrical termination is commonly achieved through a box clamp, wherein a screw and the box clamp holds a terminal element in substantial contact with an electrical conductor/cable of the circuit breaker by applying sufficient contact pressure on the terminal. In the conventional termination system for circuit breaker, the "ground clearance" i.e. the distance from
the base of the circuit breaker to the terminal height is always constant so that the box clamp and the terminal element has a stable assembled condition. The constant ground clearance configuration of the termination system of the circuit breaker also provides constant creep age with the adjacent terminal elements. However, such a constant ground clearance configuration of the termination system of the circuit breaker is disadvantageous in case of circuit breakers of smaller width, wherein the adjacent terminal elements become too close to interfere with each other and as such the minimum creep age cannot be achieved.
The conventionally known termination systems for circuit breakers utilizing constant ground clearance configuration and are indexible and fail to adjust with variation of the dimensions of elements of the circuit breaker such as the electrical conductor/cable and terminal element of the circuit breaker due to creep. The constant ground clearance configuration of the conventionally known termination systems has further problems associated therewith, for example, the conventionally known termination systems fail to efficiently maintain substantial contact between the terminal element and the electrical conductor element and the terminal elements of adjacent circuit breakers interfere with each other, particularly, in case of circuit breakers of smaller width.
for example, the European Published Patent Application EP0481309A2 discloses a terminal for circuit breaker. The terminal for circuit breaker has a terminal frame which has two lateral webs and two connecting longitudinal webs (10. 11: 12. 13). The one of the longitudinal webs (11) overhangs the first lateral web (12) with the threaded hole (15) and the first lateral web (12). which is integrally connected to the other longitudinal web (10) and is connected thereto, engages with a projection (18) into a recess (17) on the one longitudinal web (11) and is fixed therein by being peeneel over. i.e. by plastic deformation. The terminal for circuit breaker does not provide any provision for adjusting the ground clearance and has constant ground clearance configuration, accordingly has to face problems associated with the constant ground clearance configuration as disclosed above.
The European Published Palenl Application EP0552I 14131 a modular electrical apparatus that is housed in a cavity (12) of a moulded insulating casing (14). and includes a contact area (I 8) in the form of an open frame, inserted into a cage (16) having a locking screw (30). Half-open notches (52- 54) are made in the lateral flanges of the cage (16) and have straight ridges (56. 58) for receiving a transverse bar (60). The terminal for circuit breaker does not provide any provision for adjusting the ground clearance and has constant ground clearance configuration, accordingly has to face problems associated with the constant ground clearance configuration as disclosed above.
The European Published Palenl Application EP0592336A I discloses a terminal that comprises a moving contact-part (7) forming a cable housing (9): a compression spring (14) arranged in a space separating an internal wall (15) of the cage from an external wall (13) of the moving contact part, so as to push the moving contact part (7) elasiically, in such a way that the actuation of the screw in the direction which causes the movement of the moving contact part by the spring relaxing, brings about the gripping of the cable between the moving contact part (7} and the fixed contact surface (11). the gripping force being provided by the elastic force of the spring. The terminal disclosed herein is complex, involves more number of parts and still does not provide any provision for adjusting the ground clearance.
The European Published Patent Application EP0758804RI discloses assembly device for terminals (4.4a.4b) of the circuit breaker. The assembly device has each terminal constituted mainly by a metallic block (14) traversed by an elongated passage for a bar (10-12) of the circuit-breaker (D). The upper part has a threaded aperture for an Al or Cu bolt which ensures connection of one of the bars to the protected externa! circuit. At least part of the thread of the boll and/or nut is covered with a composite metallic coating containing C particles. The assembly device for terminals (4, 4a. 4b) of the circuit breaker does not provide any provision for adjusting the ground clearance and has constant ground clearance configuration, accordingly has to face problems associated with the constant ground clearance configuration as disclosed above.
Similarly, the European Published Patent Application EP095I096A 1 discloses a connection device and terminal lilted with such a device. The terminal 5 is to be mounted in a housing 2 provided in the rear part oi' a circuit breaker 3 for performing the connection of an electric cable 6 on the track 4 of the breaker. The terminal is mainly formed by a metal block 5 of substantially parallelepiped shape and comprises in its upper portion, a threaded hole into which is screwed a screw 7 said terminal screw, adapted to effect clamping of the cable 6 of the track 4. The connection device includes an elasticated section that allows the serrated grip section to adjust and clamp in position on the main conductor. The terminal disclosed herein is complex, involves more number of parts and still does not provide any provision for adjusting the ground clearance.
The European Published Patent Application EPI085601BI discloses an elastic cage-type clamp terminal. The solder-less nipple for a cable has a cage (112) formed by stamping and bending a metal strip. A locking screw (14) Ills in a threaded hole (132) in the upper branch (123) of the cage. The two end branches (123,125) are separated in the unlocked position by a first play (J I) which is closed as the screw is lightened, to increase the locking force. The cage has a double pent shape forming an elastic structure. However, such a structure of the elastic cage-type clamp terminal does not provide any provision for adjusting the ground clearance and has constant ground clearance configuration, accordingly has to face problems associated with the constant ground clearance configuration as disclosed above.
The European Published Patent Application EP1531519AI discloses an electrical terminal and electrical protection apparatus containing such a terminal. The terminal has an indicator lever (12) moved between two positions indicating respective screwed and unscrewed slates of a binding screw (9). The lever has one end cooperating with an opening (14) in a case (C) of a circuit breaker, and another end fixed to a cushion spring (11). The spring is deformed by die screw movement, between two shapes to relatively displace the lever between the two positions. The
screw clamps a cable between a terminal casing and a connection area of the circuit breaker. However, such a configuration of electrical terminal does not provide any provision for adjusting the ground clearance and has constant ground clearance configuration, accordingly has to face problems associated with the constant ground clearance configuration as disclosed above.
The European Published Patent Application EPI796214A1 discloses an electrical connection terminal and circuit breaker device with such a terminal. The terminal has a U-shaped clamp (8) electrically connected to a connection pad (2). The clamp clamps a tooth (15) of a connector comb (3) in connection position and a clam type coil terminal in a locking position to lock a cable (4) against the pad. The tooth is clamped between a fixed part and mobile part (10) of the clamp such that current from the cable crosses the pad and passes into the tooth without crossing the mobile part of the clamp. Such a configuration of electrical connection terminal is ineffective and does not provide any provision lor adjusting the ground clearance and has constant ground clearance configuration, accordingly has to face problems associated with the constant ground clearance configuration as disclosed above.
The European Published Patent Application EP2003733BI discloses an electrical connection terminal and electrical protection device comprising such a terminal. The terminal (1) has a metal cover insulating flap (10) laterally mounted around a metal cover flap (9) along direction perpendicular to direction of displacement of a screw or cage (3). Locking units are constituted by a pin and a thumb notch for locking the flap (10) with respect to the flap (9) in vertical direction parallel to the displacement axis. A clip locks the flap (10) with respect to the flap (9) in horizontal direction perpendicular to the displacement axis. However, such an electrical connection terminal also fail to provide any provision for adjusting the ground clearance and has constant ground clearance configuration, accordingly has to face problems associated with the constant ground clearance configuration as disclosed above.
The conventionally known termination systems for circuit breakers as disclosed hereinabove has major limitations associated with use thereof. For example, the conventional termination systems for circuit breakers fail to efficiently maintain substantial contact between the terminal element and the electrical conductor/cable of the circuit breaker as the dimensions of the conductor/cable and the terminal element changes due to creep, further, the conventional termination systems for circuit breakers fait to effectively clamp the electrical conductor/cable. Still further, the conventional termination systems require regular maintenance and inspection. Still further, the conventional termination systems for circuit breakers are prone to frequent failures and are not reliable. Furthermore, the constant ground clearance configuration of the conventional terminal systems for circuit breaker are particularly disadvantageous in case of circuit breakers of smaller width, wherein the adjacent terminal elements become too close to interfere with each other. Furthermore, as the termination systems for conventional circuit breakers has rigid and fixed configuration, such a configuration induces mechanical stresses in the various elements of the conventional circuit breaker to cause frequent failures.
Accordingly, there is a need for a termination .system for circuit breaker that is flexible and adjustable. More specifically, there is a need for a termination system for circuit breaker that adjusts itself according to varying condition arising due to creep of the electrical conductor/cable and the terminal element of the circuit breaker, thereby eliminating drawbacks associated with the creep of the terminal element and the electrical conductor/cable of the circuit breaker. Further, there is a need for a termination system for circuit breaker that is adjustable to avoid interference of the terminal element thereof with terminal elements of adjacent circuit breakers in case of circuit breakers of smaller width. Also, there is a need for a termination system for circuit breaker dial is simple in construction, easy to install, is simple to use. maintain and inspect. Furthermore, there is a need for a termination system for circuit breaker that requires minimum maintenance and inspection. Still further, there is a need for a termination system for circuit breaker that is reliable and ensures safety. Further, there is a need for a termination system
for circuit breaker that enhances electrical creep age of the circuit breaker with the adjacent circuit breaker.
Objects of the invention
Some of the objects of the present invention arc described herein below:
It is an object of the present invention to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
An object of the present invention is to provide a flexible and adjustable termination system for a circuit breaker.
Another object of the present invention is to provide a termination system for a circuit breaker that adjusts itself according to conditions varying due to creep of the electrical conductor/cable of the circuit breaker.
Yet another object of the present invention is to provide a termination system for a circuit breaker that is adjustable to avoid interference of a terminal element thereof with terminal elements of adjacent circuit breakers, particularly, in case of circuit breakers of smaller width.
Still another object of the present invention is to provide a termination system for circuit breaker that is simple in construction.
Yet another object of the present invention is to provide a termination system for a circuit breaker that facilitates installation of the circuit breaker.
Still another object of the present invention is to provide a termination system for a circuit breaker that facilitates use. maintenance and inspection of the circuit breaker.
Yet another object of the present invention is to provide a termination system for a circuit breaker that eliminates drawbacks associated with the creep of electrical conductor/cable of the circuit breaker.
Another object of the present invention is to provide a termination system for a circuit breaker that requires minimum maintenance and inspection.
Still another object of the present invention is to provide a termination system for a circuit breaker that is reliable and ensures safely.
Summary of the invention
A termination system for maintaining substantial contact between an electrical conductor element and a terminal element of a circuit-breaker is disclosed in accordance with an embodiment of the present disclosure. The termination system includes a circuit-breaker housing, a terminal assembly, a box clamp and a threaded element. The circuit-breaker housing is provided with at least one longitudinally extending guide element configured on an operative front face thereof. The terminal assembly is received inside the circuit-breaker housing and slides along the at least one longitudinally extending guide clement for adjusting position thereof with respect to the circuit breaker housing. The terminal assembly includes housing, a box clamp and a threaded element. The housing includes a slot, an opening, an operative bottom cover and a sliding element. The slot is configured on a sidewail of the housing and receives at least a portion of the terminal element inside the housing. The opening is disposed operalively below the slot and receives at least a portion of the electrical conductor inside the housing. The operative bottom cover is removably secured to the sidewalls of the housing for facilitating selective access to an interior of the housing. The sliding element is configured on the housing and engages with the at least one longitudinally extending guide element for facilitating relative movement between the terminal assembly and the circuit breaker housing for adjusting the ground clearance. The box clamp is disposed inside the housing
and is supported over the operative bottom cover. The box clamp respectively receives the portion of the terminal element and the portion of the electrical cable received in the housing. The threaded element is functionally coupled to the box clamp and is actuated from an exterior of the housing to facilitate pressing of the portion of the terminal element received inside the box clamp against the portion of the conductor element received in the box clamp to clamp the portion of the conductor element.
Typically, the at least one longitudinally extending guide element is a guide-way.
Alternatively, the at least one longitudinally extending guide element is a slot. Typically the threaded element is a screw.
Alternatively, the threaded element is a bolt.
Brief description of the drawings
Figure I illustrates an isometric view of a circuit breaker having a termination system in accordance with an embodiment of the present invention, wherein a terminal assembly is slidably engaging with a circuit-breaker housing of the termination system:
Figure 2 illustrates an isometric view of the circuit breaker housing; of the termination system of Figure I:
Figure 3 illustrates an isometric view of the terminal assembly of the termination system of Figure I:
Figure 4 illustrates an exploded view of the terminal assembly of Figure 3;
Figure 5 illustrates a cross sectional view- of the terminal assembly of Figure 3; and
Figure 6 illustrates an isometric view of a terminal housing/housing of the terminal assembly of Figure 3:
Detailed description of the invention
The invention will now be described with reference to the accompanying drawings which do not limit the scope and ambit of the invention. The description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and. therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Ground Clearance is a term used in the specification to define distance of the base of a circuit breaker from a terminal element of the circuit breaker, i.e. the height at which the terminal element oJ" the circuit breaker is supported with respect to the base.
The present disclosure envisages an adjustable and flexible termination system for a circuit breaker, wherein the adjustable and flexible termination system constantly maintains a terminal element thereof in constant contact with an electrical conductor element of the circuit breaker irrespective of the change in dimensions of the electrical conductor element and the terminal element due to creep- More specifically, the adjustable and flexible termination system maintains sufficient contact pressure between the terminal element and the electrical conductor element to facilitate holding of the electrical conductor element by the terminal element. Generally, the electrical conductor element is an electrical cable of copper or aluminum. The adjustable and flexible termination system utilizes a movable box clamp sub-assembly. The movable box clamp sub-assembly is a part of a terminal assembly and has a screw and a box clamp as elements thereof. The box clamp subassembly can slide along the depth of the circuit breaker enabling selectively changing of the "ground clearance" as the position of box clamp sub-assembly with respect to a circuit breaker housing of the circuit breaker changes. Such a configuration provides flexibility to change the "ground clearance'" unlike the conventional termination system in which the "ground clearance" is fixed. Such a variable "ground clearance" configuration of the termination system facilitates in avoiding interference of a terminal element thereof with terminal elements of adjacent circuit breakers, particularly, in case of circuit breakers of smaller width. Furthermore, such a variable "ground clearance" configuration of the termination system facilitate staggered arrangement of the circuit breakers, thereby increasing the electrical creep age of a terminal element with the adjacent terminal element of another circuit breaker. Further, such a configuration enables arrangement of the terminal elements in a non- interfering configuration with each other in case of circuit breakers are of smaller width.
Referring to Figure la a circuit breaker having a termination system 100 in accordance with an embodiment of the present invention is illustrated. The termination system 100 maintains substantial contact between an electrical conductor element (not illustrated in Figures) and a terminal element 05 of the circuit-breaker. The adjustable and flexible termination system 100 includes a circuit-breaker housing 06 and a terminal assembly 10. Figure 2 illustrates an isometric view of the circuit breaker housing 06 of the termination system 100. The circuit-breaker housing 06 is provided with at least one longitudinally extending guide element 06a configured on an operative front face thereof. In accordance with an embodiment of the present disclosure the at least one longitudinally extending guide element is a slot 06a. In accordance with an embodiment of the present disclosure the at least one longitudinally extending guide element is a guide-way.
As illustrated in Figure 1. the terminal assembly 10 is adapted to be received inside the circuit-breaker housing 06 and slide along the at least one longitudinally extending guide element or slot 06a configured on the operative front face of the circuit breaker housing 06 for adjusting position thereof with respect to the circuit breaker housing 06. The terminal assembly 10 and the circuit breaker housing 06 are provided with complimentary mating elements that facilitate sliding engagement between the terminal assembly 10 and the circuit breaker housing 06. Figure 3 illustrates an isometric view of the terminal assembly 10 of the termination system 100. Figure 4 illustrates an exploded view of the terminal assembly 10. Referring to Figure 3 and Figure 4. the terminal assembly 10 includes a housing 01. a box clamp 03 and a threaded element 04. Figure 5 illustrates a cross sectional view of the terminal assembly 10. The housing 01 includes a pair of opposing side walls, a top wall and an operative bottom cover 02 defining an interior of the housing 01. The housing 01 further includes a slot Ola (illustrated in Figure 6) configured on a sidewall of the housing 01. an opening 01b disposed operalively below the slot Ola and an operative bottom cover 02. The slot Ola is adapted to receive at least a portion of the terminal element 05 inside the housing 01 to define the ground clearance as the height of the terminal element
from the base of the circuit breaker. The opening 01b is disposed operatively below the slot Ola and is adapted to receive at least a portion of the electrical conductor element inside the housing 01. The operative bottom cover 02 is removably secured to the sidewalls of the housing 01 for facilitating selective access to the interior of the housing 01. In accordance with the present invention, the height of the terminal element 05 may be adjusted with respect to the base of the circuit breaker, such a configuration enables adjusting the ground clearance and also permit staggered arrangement of the circuit breakers, thereby increasing the electrical creep age of a terminal element with the adjacent terminal element of another circuit breaker. More specifically, the terminal assembly 10 includes a sliding element that is complimentary to the slot 06a configured on the operative front face of the circuit breaker housing 06. The sliding element is generally configured on the housing of the terminal assembly. Figure 6 illustrates the terminal housing/housing of the terminal assembly 10 with the sliding element in the form of a projection/ guide configured thereon. Such a configuration of the slot 06a and the sliding element on the circuit breaker housing 06 and the terminal assembly 10 respectively facilitate relative movement between the terminal assembly 10 and the circuit breaker housing 06 for adjusting the ground clearance, thereby providing flexibility to change the "ground clearance" unlike the conventional termination system in which the "'ground clearance" is fixed. The terminal assembly 10 can be moved to any position within the guide element 06a provided on the circuit breaker housing 06. The position and the stopper profile can be designed according to the circuit breaker.
The box clamp 03 is disposed inside the housing 01 and is supported over the operative bottom cover 02 of the housing 01. The box clamp 03 is adapted to respectively receive the portion of the terminal element 05 and the portion of the electrical conductor element received in the housing 01. The threaded element 04 and the box clamp 03 operates together to clamp the flexible conductor element of the circuit breaker. More specifically, the threaded element 04 is functionally coupled to the box clamp 03 and is adapted to be actuated from an exterior of the housing 01 for facilitating pressing of the portion of the terminal element 05
received inside the box clamp 03 against the portion of the conductor element received inside the box clamp 03 to clamp the portion of the conductor element in the box clamp 03. Referring to Figure 4 and Figure 5 of the accompanying drawings, the threaded element 04 engages with a threaded hole configured on an operative top face of the box clamp 03 and is adapted to advance in the operatively downward direction upon actuation thereof. In accordance with an embodiment of the present invention, the treaded element 04 is a screw actuable by a screw-driver from the exterior of the housing 01. In accordance with another embodiment of the present invention, the treaded element 04 is a boll. As the threaded element 04 advances in the operatively downward direction, the threaded element 04 presses the portion of the terminal element 05 received inside the box clamp 03 against the electrical conductor element received inside the box clamp 03 to facilitate clamping of the flexible conductor element of the circuit breaker between the portion of the terminal element 05 received inside the box clamp 03 and the operative bottom of the box clamp 03. With the variable "ground clearance" configuration of the adjustable and flexible termination system, the contact pressure applied by the terminal element 05 on the electrical conducting element clamped in the box clamp 03 may also be varied depending upon change in dimensions of the electrical conductor due to creep, thereby maintaining substantial contact pressure between the electrical conducting element and the terminal element 05 at all times. Such a configuration results in efficient operation of the termination system and eliminates drawbacks associated with the creep of electrical conductor/cable of the circuit breaker.
Advantages of the inventon
The termination system in accordance with the present invention for a circuit breaker has several technical advantages including but not limited to the realization of:
• a flexible and adjustable termination system for circuit breaker:
• a termination system for a circuit breaker that adjusts itself according to conditions varying due to creep of the electrical conductor/cable of the circuit breaker:
• a termination system for a circuit breaker that eliminates drawbacks associated with the creep of electrical conductor/cable of the circuit breaker:
• a termination system for a circuit breaker thai is adjustable to avoid interference of a terminal element thereof with terminals of adjacent circuit breakers, particularly in case of circuit breakers of smaller width:
• a termination system for a circuit breaker that is simple in construction:
• a termination system for a circuit breaker that facilitates installation of the circuit breaker:
• a termination system for a circuit breaker that facilitates use. maintenance and inspection of the circuit breaker:
• a termination system for a circuit breaker that requires minimum maintenance and inspection: and
• a termination system for a circuit breaker that is reliable and ensures safety.
Throughout this specification the word "'comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.
The use of the expression ;'at least" or "at least one" suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the invention to achieve one or more of the desired objects or results.
Any discussion of documents, acts, materials, devices. articles or the like that has been included in this specification is solely for the purpose of providing a context for the invention. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the
field relevant to the invention as it existed anywhere before the priority date of this application.
The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the invention, unless there is a statement in the specification specific to the contrary.
While considerable emphasis has been placed herein on the specific features of the preferred embodiment, it will be appreciated that many additional features can be added and that many changes can be made in (he preferred embodiment without departing from the principles of the invention. These and other changes in the preferred embodiment of the invention will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.
We Claim:
I. A termination system for maintaining substantial contact between an electrical conductor element and a terminal element of a circuit-breaker, said termination system comprising:
a circuit-breaker housing provided with at least one longitudinally extending guide element configured of an operative front face thereof;
a terminal assembly adapted to be received inside said circuit-breaker housing and slide along said at least one longitudinally extending guide element for adjusting position thereof with respect to said circuit breaker housing, said terminal assembly comprising:
a housing comprising:
a slot configured on a sidewall of said housing and adapted to receive at least a portion of the terminal element inside said housing:
an opening disposed operalively below said slot and adapted to receive at least a portion of the electrical conductor element inside said housing:
an operative bottom cover removably secured to the sidewalls of said housing for facilitating selective access to an interior of said housing: and
a sliding element configured on said housing and adapted to
engage with said at least one longitudinally extending guide
element for facilitating relative movement between said
terminal assembly and said circuit breaker housing for
adjusting the ground clearance:
a box clamp disposed inside said housing and supported over said operative
bottom cover, said box clamp adapted to respectively receive said portion of the
terminal element and said portion of the electrical conductor element received in
said housing; and
a threaded element functionally coupled to said box clamp and adapted to be actuated from an exterior of said housing to facilitate pressing of said portion of
the terminal element received inside said box clamp against said portion of the conductor element received in said box clamp to clamp said portion of the conductor element.
2. The termination system as claimed in claim I. wherein said at least one longitudinally extending guide element is a guide-way.
3. The termination system us claimed in claim I. wherein said at least one longitudinally extending guide element is a slot.
4. The termination system as claimed in claim I. wherein said threaded element is a screw,
5. The termination system as claimed in claim I. wherein said threaded element is a bolt.
| # | Name | Date |
|---|---|---|
| 1 | ABSTRACT1.jpg | 2018-08-11 |
| 2 | 478-MUM-2013-POWER OF AUTHORITY(7-3-2014).pdf | 2018-08-11 |
| 3 | 478-MUM-2013-GENERAL POWER OF ATTORNEY(12-6-2013).pdf | 2018-08-11 |
| 4 | 478-MUM-2013-FORM 5.pdf | 2018-08-11 |
| 5 | 478-MUM-2013-FORM 3.pdf | 2018-08-11 |
| 6 | 478-MUM-2013-FORM 2.pdf | 2018-08-11 |
| 7 | 478-MUM-2013-FORM 2(TITLE PAGE).pdf | 2018-08-11 |
| 8 | 478-MUM-2013-FORM 1.pdf | 2018-08-11 |
| 9 | 478-MUM-2013-FORM 1(12-6-2013).pdf | 2018-08-11 |
| 10 | 478-MUM-2013-DRAWING.pdf | 2018-08-11 |
| 11 | 478-MUM-2013-DESCRIPTION(COMPLETE).pdf | 2018-08-11 |
| 12 | 478-MUM-2013-CORRESPONDENCE.pdf | 2018-08-11 |
| 13 | 478-MUM-2013-CORRESPONDENCE(12-6-2013).pdf | 2018-08-11 |
| 14 | 478-MUM-2013-CLAIMS.pdf | 2018-08-11 |
| 15 | 478-MUM-2013-ABSTRACT.pdf | 2018-08-11 |
| 16 | 478-MUM-2013-FER.pdf | 2018-09-14 |
| 17 | 478-MUM-2013-OTHERS [23-01-2019(online)].pdf | 2019-01-23 |
| 18 | 478-MUM-2013-FORM-26 [23-01-2019(online)].pdf | 2019-01-23 |
| 19 | 478-MUM-2013-FER_SER_REPLY [23-01-2019(online)].pdf | 2019-01-23 |
| 20 | 478-MUM-2013-DRAWING [23-01-2019(online)].pdf | 2019-01-23 |
| 21 | 478-MUM-2013-CORRESPONDENCE [23-01-2019(online)].pdf | 2019-01-23 |
| 22 | 478-MUM-2013-CLAIMS [23-01-2019(online)].pdf | 2019-01-23 |
| 23 | 478-MUM-2013-ABSTRACT [23-01-2019(online)].pdf | 2019-01-23 |
| 24 | 478-MUM-2013-PatentCertificate31-12-2019.pdf | 2019-12-31 |
| 25 | 478-MUM-2013-IntimationOfGrant31-12-2019.pdf | 2019-12-31 |
| 26 | 478-MUM-2013-RELEVANT DOCUMENTS [31-03-2020(online)].pdf | 2020-03-31 |
| 27 | 478-MUM-2013-POWER OF AUTHORITY [17-02-2021(online)].pdf | 2021-02-17 |
| 28 | 478-MUM-2013-FORM-16 [17-02-2021(online)].pdf | 2021-02-17 |
| 29 | 478-MUM-2013-ASSIGNMENT WITH VERIFIED COPY [17-02-2021(online)].pdf | 2021-02-17 |
| 30 | 478-MUM-2013-RELEVANT DOCUMENTS [24-09-2021(online)].pdf | 2021-09-24 |
| 31 | 478-MUM-2013-RELEVANT DOCUMENTS [30-09-2022(online)].pdf | 2022-09-30 |
| 32 | 478-MUM-2013-RELEVANT DOCUMENTS [26-09-2023(online)].pdf | 2023-09-26 |
| 1 | 478mum2013_05-09-2018.pdf |