DESC:FIELD OF INVENTION

[001] The present invention relates to an energy-efficient power transmission system in farm equipment, such as tractors. In particular, the present invention relates to a mechanically clutched pulley assembly in the transmission system for connecting/disconnecting to/from the drive from the compressor. More particularly, the present invention relates to a mechanically clutched pulley assembly for the transmission system and which has a simple four-link mechanism for connecting/disconnecting the drive (engine power) to/from the air-compressor.

BACKGROUND OF THE INVENTION

[002] In a transmission system, the pulleys are used to support and drive by means of a driving element such as a rope, cable, belt, or chain which runs over the pulleys inside the groove/s.

[003] In farm equipment applications like in tractors, the belt pulleys are used as driving element for various engine applications. The belt pulleys are also used in air braking system for trailers using a compressor for compressing the air. Here, a system of reservoir and valves is used for trailer braking application.

[004] The disadvantage in the aforesaid pulley-based transmission system is that there is no means to disconnect the drive to the compressor, whenever the compressed air applications such as haulage (via trailer), filling air in tyre, etc. are not in use. This compressor delivers air and builds up pressure in the air reservoir and this compressed air is used for vehicle braking.

[005] Therefore, the compressor is always in a running condition, which leads to substantial power loss in the transmission system, e.g. even when the trailer brake application is not required.

[006] Obviously, this significantly reduces the power available for other tractor applications as well as generates vibrations in the transmission system.

[007] The currently used pulleys have a solid, single piece configuration for providing drive from the engine to a single-cyliner, high-speed, air-cooled compressor by means of a belt drive for air trailer brake system.

[008] The closest known solution for connecting and disconnecting the drive to/from the compressor is by using solenoid and electromagnetic type of arrangement. The application of foldable legs of a spider to engage and disengage the transmission drive (biomimicry) is also used.

[009] However, the presently available solutions do not provide an effective mechanism for disconnecting / decoupling the drive from the compressor.

[010] Therefore, there is an existing need for developing an improved mechanism for connecting/coupling or disconnecting/decoupling the drive to or from the compressor, through which the user can connect/disconnect the drive to/from the air-compressor as per the requirement of transmission system.

OBJECTS OF THE INVENTION

[011] Some of the objects of the present invention - satisfied by at least one embodiment of the present invention - are as follows:

[012] An object of the present invention is to provide a mechanically clutched pulley mechanism in the transmission system to easily connect/disconnect the pulley drive to/from the air-compressor, whenever not required.

[013] Another object of the present invention is to provide a mechanically clutched pulley mechanism in the transmission system to make engine power available for other applications, whenever the air-compressor is not required.

[014] Still another object of the present invention is to provide a mechanically clutched pulley mechanism in the transmission system, which offers substantial fuel savings, by eliminating a continuous running of the pulley.

[015] Yet another object of the present invention is to provide a mechanically clutched pulley mechanism in the transmission system, which eliminates vibrations in the overall transmission system.

[016] A further object of the present invention is to provide a mechanically clutched pulley mechanism in the transmission system, which leads to substantially less power loss therein.

[017] Still further object of the present invention is to provide a mechanically clutched pulley mechanism in the transmission system, which sustainably reduces the carbon dioxide emissions due to lower fuel consumption.

[018] Yet further object of the present invention is to provide a mechanically clutched pulley mechanism in the transmission system, which is cost-effective, simple in construction and offers ease of adaptability in any existing system using belt-pulley arrangement.

[019] The object of the present invention is also to provide a mechanically clutched pulley mechanism in the transmission system, which has a frugal but robust configuration for pulley engagement and disengagement.

[020] These and other objects and advantages of the present invention will become more apparent from the following description, when read with the accompanying figures of drawing, which are however not intended to limit the scope of the present invention in any way.

SUMMARY OF INVENTION

[021] In accordance with the present invention, there is provided a mechanically clutched pulley assembly for a transmission system, the pulley assembly comprising a mechanical clutch mechanism having two sub-assemblies, the first sub-assembly receiving the engine power and the second sub-assembly transmitting the engine power to a transmission system driven thereby, wherein a linkage mechanism disposed between the sub-assemblies connects or disconnects the engine power to or from transmission system driven thereby, as and when required by the transmission system.

[022] Typically, the first sub-assembly comprises an outer unit assembly connected to the engine power and the second sub-assembly comprises an inner hub assembly connected to the transmission system mechanically driven by the engine power.

[022] Typically, the outer unit assembly comprises:

• a pulley driven by a belt-drive connected to an engine for receiving engine power therefrom; and

• a plurality of roller assemblies fitted on the inner periphery of the belt-driven pulley and to be rotatable on the axes of the roller assemblies;

wherein each of the roller assemblies is disposed uniformly around the inner periphery of the belt-driven pulley for connecting or disconnecting the engine power to or from the transmission system.

[023] Typically, the outer unit assembly comprises three roller assemblies equilaterally disposed on the inner periphery of the belt-driven pulley.

[024] Typically, each of the roller assemblies comprises:

• a pair of roller guide pads, each pad fixed on either face of the pulley extending towards central axis thereof; and

• a roller having a length rotatable and suspended between the roller guide pads by means of a roller guide pin;

wherein the roller guide pads have a predefined length to facilitate the rollers to freely rotate on the outer periphery of the hub in a disconnection state of the engine power and the transmission system facilitated by means of a clutch mechanism disposed between the pulley and the hub.

[025] Typically, the inner hub assembly comprises:

• a hub fitted with a plurality of guide pairs mutually spaced apart and fitted on a surface facing the connection of the hub assembly to the transmission system by means of an internal spline made on the inner diameter thereof;

• a corresponding plurality of guide plates constrained between the guide pairs to be slidable for extension outwards or retraction inwards of the central axis of the hub;

• a linkage mechanism connected to the guide plates for facilitating an outward extension or inward retraction thereof by sliding between the guide pairs; and

• a hub cover for covering the linkage mechanism disposed between the hub and the hub cover;

wherein the roller assemblies are connected to or disconnected from the hub assembly by the outward extension or inward retraction of the guide plates by operating the linkage mechanism by clockwise or anticlockwise rotation of the bush.

[026] Typically, the linkage mechanism comprises a bush having three equilaterally spaced arms extending out from the center thereof; each of the arms having two holes at either end thereof for connecting a respective link at the outer end thereof and a pin at the other end thereof for fixing the hub cover thereon.

[027] Typically, the hub cover having a projection for supporting a three-pronged handle fixed thereon by means of corresponding holes therein for operating the linkage mechanism for engaging or disengaging the roller assemblies with or from the guide plates.

[028] Typically, the guide plates comprise two mutually spaced apart holes on one of the sides thereof facing the guides for securing the guide plates in a retracted position or an extended position.

[029] Typically, one of the guides facing the holes on the guide plate comprises a respective through hole fitted with a ball and compression spring arrangement disposed inside the through hole for securing the guide plate in the retracted position or the extended position.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

[030] The present invention will be briefly described with reference to the accompanying drawings, wherein:

[031] Figure 1a shows a conventional arrangement in a transmission system in which the having the air-compressor is driven by the engine via a belt-pulley mechanism.

[032] Figure 1b shows a conventional arrangement of the belt-pulley mechanism driving the the air-compressor driven by using power from the engine.

[033] Figure 1c shows a typical single-piece pulley for the conventional arrangement of the belt-pulley mechanism of Figure 1b.

[034] Figure 2a shows an improved pulley arrangement with a mechanically clutched pulley configured in accordance with the present invention for easily connecting or disconnecting the drive e.g. to/from the air-compressor, when air-compressor operation is not required.

[035] Figure 2b shows the cross-sectional view of the mechanically clutched pulley of Fig. 2a for driving the air-compressor by using engine power.

[036] Figure 2c shows an enlarged view of the encircled portion A of the mechanically clutched pulley shown in Figure 2b.

[037] Figure 2d shows a front view of the mechanically clutched pulley of Figure 2c configured in accordance with the present invention.

[038] Figure 3 shows a front view of a transmission system of a simpler mechanism with an improved mechanically clutched pulley assembly configured in accordance with the present invention to facilitate an easy connection/disconnection of the drive from the engine to the air-compressor.

[039] Figure 4 shows an exploded view of the mechanically clutched pulley configured in accordance with the present invention as shown in Fig. 3.

[040] Figure 5a shows a perspective view of the mechanically clutched pulley of Fig. 3 when disconnected from the drive from the engine to air-compressor.

[041] Figure 5b shows a detailed and enlarged perspective view of the outer unit after disconnection of the outer unit from the hub of the mechanically clutched pulley of Fig. 3, when air-compressor’s operation is not required.

[042] Figure 6a shows a perspective view of the mechanically clutched pulley of Fig. 3 when the drive from the engine to the air-compressor is connected by connecting the outer unit to hub of mechanically clutched pulley of Fig. 3.

[043] Figure 6b shows a detailed and enlarged perspective view of the outer unit after connection of the outer unit to hub of the mechanically clutched pulley of Fig. 3 for operating the air-compressor by using the engine power.

[044] Figure 7 shows a simplified diagram of a Slider crank mechanism as applied in the mechanically clutched pulley configured in accordance with the present invention.

DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS

[045] In the following, the mechanically clutched pulley mechanism in the transmission system configured in accordance with the present invention will be described in more details with reference to the accompanying drawings without limiting the scope and ambit of the present invention in any way.

[046] Figure 1a shows a conventional arrangement in a transmission system in which the air-compressor 20 is driven by the engine via a power transfer mechanism consisting of a pulley 10 running by a belt 12 and mounted on the crankshaft end by tightening a nut 14.

[047] Figure 1b shows a conventional arrangement of the belt-pulley mechanism of Figure 1a, showing only the air-compressor 20 fitted with the pulley 10 by means of the nut 14 on the crankshaft (not visible).

[048] Figure 1c shows a typical pulley 10 for the conventional arrangement of the belt-pulley mechanism of Figure 1b.

[049] Figure 2a shows an improved pulley arrangement with a mechanically clutched pulley 110 configured in accordance with the present invention with a knob or handle 114 for easily connecting or disconnecting the drive e.g. to/from the air-compressor, when air-compressor operation is not required.

[050] Figure 2b shows the cross-sectional view of the mechanically clutched pulley of Fig. 2a for driving the air-compressor by using engine power. It shows outer unit 102, a knob or handle 114 fitted on a hub cover 116 for covering the assembly of links 110, bush 112, guide plates 124, guide pins 126, and guides 128.

[051] Figure 2c shows an enlarged view of the encircled portion A of the mechanically clutched pulley 100 shown in Figure 2b. The outer unit 102 is shown with a ball 120 is supported on a respective spring 122. This ball-spring arrangement is provided to secure the retracted/disconnected (P1) or extended/connected (P2) positions of guide plates 124 (see Figure 5b and Figure 6b respectively).

[052] Figure 3 shows a front view of a power transmission system of a simpler mechanism with mechanically clutched pulley assembly 100 shown without the hub cover 116 in a disconnected state of the drive from the engine to the air-compressor which does not require operation thereof for the time being. It includes: outer unit 102, roller guide pads 104, roller guide pins 106, hub 108, links 112, bush 114 and guides 128. Here, mechanically clutched pulley assembly 100 is shown with guide plates 124 not blocking the rollers 118 to allow freely running thereof on circumference of hub 108 for keeping the engine power from being transmitted to the air-compressor (not shown).

[053] Figure 4 shows an exploded view of the mechanically clutched pulley 100 configured in accordance with the present invention as shown in Fig. 3. It includes (starting from LHS towards RHS): an inner hub 108 fitted with 3 pairs of guides 128 for guiding the guide plates 124 therebetween; an outer unit 102 fitted with roller guide pads 104 (6 Nos.) fixed for rotatably holding rollers 118 (3 Nos.) by means of roller guide pins 106 (3 Nos.), guide plates 124 (3 Nos.) aloong with ball 120 and springs 122 (3 Nos. each), a bush (112) with theee equilaterally spaced arms for connecting links 110 thereto by means of pins 126 (3 Nos.), links 110 (3 Nos.) and a hub cover 116 fitted with a knob or handle 114 for covering the entire guide roller connectioin/disconnection arrangement.

[054] Figure 5a shows a perspective view of the mechanically clutched pulley of Fig. 3 when disconnected from the drive from the engine to air-compressor. This is achieved by a retracted position 124a of the guideplates 124 by using the slider link mechanism explained in Fig. 7.

[055] Figure 5b shows a detailed and enlarged perspective view of the outer unit after disconnection of the outer unit from the hub of the mechanically clutched pulley of Fig. 3, when air-compressor’s operation is not required. Here, the roller is not blocked by guide plates 124, which are in a retracted position 124a thereof and secured in place at position P1 by means of ball 120 and spring 122 arrangement.

[056] Figure 6a shows a perspective view of the mechanically clutched pulley of Fig. 3 when the drive from the engine to the air-compressor is connected by connecting the outer unit to hub of mechanically clutched pulley of Fig. 3. Here, handle 114 (not shown here for sake of simlicity of illustration) connected to bush 112 is rotated to another position 112b by means of pins 126, for moving links 110 connected thereto to another position 110b by using the slider link mechanism. Accordingly, by rotation of bush 112 in a clockwise direction R to a position 112b, links 110 move away to an position 110b from the center of hub 108 and finally push guide plates 124 to extend out of hub 108 for blocking the rollers 118, which in turn starts the rotation of the outer unit 102 to enable transmission of engine power from mechanically clutched pulley assembly 100 to the air-compressor.

[057] Figure 6b shows a detailed and enlarged perspective view of outer unit 102 after connection thereof to hub 108 of mechanically clutched pulley assembly 100 for operating the air-compressor by using the engine power. Now, the gulde plates 124b are aligned at position P2 of the with ball 120 and spring 122 arrangement to keep this connection intact, until the engine power is to be disconnected from the air-compressor, when not required.

[058] Figure 7 shows a simplified diagram of a Slider crank mechanism as applied in the mechanically clutched pulley 110 configured in accordance with the present invention. Here, on rotating bush 112 (fixed by its one end on hub 108) in a clockwise direction R, link 110 (connected to bush 112 at its other end) extends in the direction B. However, since guides 126 constrain the motion of the other end of link 110 in a sliding motion of guide plate 124 in direction C, which in turn extends away and beyond the circumference of hub 108 and obstructions roller 118 freely running on the circumference thereof. This obstruction engages or mechanically connects the rotating outer unit 102 with hub 108, which in turn is connected to air-compressor and thus engine power is easily and effectively to be transmitted the air-compressor.
WORKING OF THE INVENTION

[059] The mechanically clutched pulley assembly 100 is split into two different units held in position by rollers 118 supported by roller guide pads 104 and roller guide pins 106. The inner unit consists of a hub 108 and a hub cover 116 supported back to back be held together in position by bolts. The hub 108 is provided with three pairs of equispaced guides 128. A bush 112 with pins 126 projecting therefrom is mounted on hub 108. Links 110 are connected to pins 126 and guide plates 124 are connected to links 110. On rotating bush 112 clockwise, links 110 also rotate to move outwards and guide plates 124 slide outwards between the pairs of guide 128 fixed on hub 108 and outwardly extended links 110 come in contact with rollers 118, thus causing the inner unit (hub assembly) to rotate and hence the drive (engine power) is transmitted to the air-compresssor connected to the hub assembly through internal splines thereof. This extended position of guide plates 124 is secured and locked by ball 120 and spring 122 arrangement at this position P2.

[060] On the other hand, when air-compressor is not required to be operated, bush 112 is rotated anti-clockwise to move guide plates 124 inwards, which in turn retracts links 110 sliding within guides 128 between the pairs of guide 128 fixed on hub 108 and inwardly retracted links 110 thus causing rollers 118 to be disengaged from guide plates 124 and thus tollers 118 freely rotate on the inner unit (hub assembly) periphery and thereby the drive (engine power) is disconnected from being transmitted to the air-compresssor. This retracted position of guide plates 124 is secured and locked by ball 120 and spring 122 arrangement at this position P1.

[061] In this way, the mechanically clutched pulley assembly 100 can be connected or disconnected by the user as per the requirement in the transmission system.

[062] The principle used for decoupling the pulley assembly 100 uses a simple however rigid mechanism based on four-bar linkages. It is the simplest and often the most useful mechanism.

[063] A variety of useful mechanisms can be formed from a four-link mechanism through slight variations, such as changing the character of the pairs, proportions of links, etc. Furthermore, many complex link mechanisms are combinations of two or more such mechanisms.

[064] The function of a link mechanism is to produce rotating, oscillating, or reciprocating motion from the rotation of a crank or vice versa. The main advantage with this four-bar linkage mechanism is that the constraints can be impose on the linkages and thereby a definite motion can be obtained depending on the required degree/s of freedom (DOF). While each body has six degrees of freedom in space, the kinematical conditions lead to one degree of freedom for the whole system.

[065] Here, an inversion of the four-bar linkage called as slider crank mechanism is used (see Fig. 7). This Slider-crank mechanism is used to transform rotational motion into translational motion by means of a rotating driving beam, a connection rod and a sliding body.

TECHNICAL ADVANTAGES AND ECONOMIC SIGNIFICANCE

[066] The mechanically clutched pulley assembly configured in accordance with the present invention has the following technical and economic advantages:

• Uses single knob for connecting/disconnecting pulley when not required.

• Engine power can made available for other applications, when air-compressor (e.g. 4HP is consumed by a 160cc compressor) is not required, thus reducing the overall Tractor HP.

• Substantial fuel saving by eliminating continuous running of pulley drive.

• Eliminates vibrations of the system.

• Leads to lower power losses in the system.

• Sustainably reduces carbon dioxide emissions due to fuel savings.

• Reduction in overall HP of Tractor for other applications would increase market share of such tractors.

• Facilitates commercialization in a wide range of applications (both industrial and vehicular use), wherever and engagement/disengagement is required in pulley system.
• This can be achieved without losing the belt tension etc. or without requiring the belt tension resetting.

• Customer satisfaction due to use of a hand-operated knob for declutching the pulley, as and when required, according to requirement and with the slightest effort.

• Makes the tractor more efficient with respect to the power loss/wastage.

• Offers a cost-effective, simple, frugal construction with a robust design for pulley engagement/disengagement, suitable for the tractor Industry.

• Presents an ease of adaptability in any existing system using a pulley and belt assembly.

[067] 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.

[068] 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. The exemplary embodiments described in this specification are intended merely to provide an understanding of various manners in which this embodiment may be used and to further enable the skilled person in the relevant art to practice this invention.

[069] Although, the embodiments presented in this disclosure have been described in terms of its preferred embodiments, the skilled person in the art would readily recognize that these embodiments can be applied with modifications possible within the spirit and scope of the present invention as described in this specification by making innumerable changes, variations, modifications, alterations and/or integrations in terms of materials and method used to configure, manufacture and assemble various constituents, components, subassemblies and assemblies, in terms of their size, shapes, orientations and interrelationships without departing from the scope and spirit of the present invention.

[070] The numerical values given of various physical parameters, dimensions and quantities are only approximate values and it is envisaged that the values higher or lower than the numerical value assigned to the physical parameters, dimensions and quantities fall within the scope of the disclosure unless there is a statement in the specification to the contrary.

[071] Throughout this specification, the word “comprise”, or variations such as “comprises” or “comprising”, shall be understood to imply including a described element, integer or method step, or group of elements, integers or method steps, however, does not imply excluding any other element, integer or step, or group of elements, integers or method steps.

[072] The use of the expression “a”, “at least” or “at least one” shall imply using one or more elements or ingredients or quantities, as used in the embodiment of the disclosure in order to achieve one or more of the intended objects or results of the present invention.

[073] The description of the exemplary embodiments is intended to be read in conjunction with the accompanying drawings, which are to be considered part of the entire written description. In the description, relative terms such as “lower”, “upper”, “horizontal”, “vertical”, “above”, “below”, “up”, “down”, “top”, and “bottom” as well as derivatives thereof (e.g. “horizontally”, “downwardly”, “upwardly” etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion.

[074] These relative terms are for convenience of description and do not require that the corresponding apparatus or device be constructed or operated in a particular orientation. Terms concerning attachments, coupling and the like, such as “connected” and “interconnected”, refer to a relationship, wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise. ,CLAIMS:We claim:

1. A mechanically clutched pulley assembly for a transmission system, said pulley assembly comprising a mechanical clutch mechanism having two sub-assemblies, the first sub-assembly receiving the engine power and the second sub-assembly transmitting said engine power to a transmission system driven thereby, wherein a linkage mechanism disposed between said sub-assemblies connects or disconnects said engine power to or from transmission system driven thereby, as and when required by said transmission system.

2. Mechanically clutched pulley assembly as claimed in claim 1, wherein said first sub-assembly comprises an outer unit assembly connected to said engine power and said second sub-assembly comprises an inner hub assembly connected to said transmission system mechanically driven by said engine power.

3. Mechanically clutched pulley assembly as claimed in claim 2, wherein said outer unit assembly comprises:

• a pulley (102) driven by a belt-drive connected to an engine for receiving engine power therefrom; and

• a plurality of roller (118) assemblies fitted on the inner periphery of said belt-driven pulley (102) and to be rotatable on the axes of said roller (118) assemblies;

wherein each of said roller assemblies is disposed uniformly around the inner periphery of said belt-driven pulley (102) for connecting or disconnecting said engine power to or from said transmission system.

4. Mechanically clutched pulley assembly as claimed in claim 3, wherein said outer unit assembly comprises three roller assemblies equilaterally disposed on the inner periphery of said belt-driven pulley (102).

5. Mechanically clutched pulley assembly as claimed in claim 4, wherein each of said roller assemblies comprises:

• a pair of roller guide pads (106), each pad fixed on either face of said pulley (102) extending towards central axis thereof; and

• a roller having a length rotatable and suspended between said roller guide pads (104) by means of a roller guide pin (106);

wherein said roller guide pads (104) have a predefined length to facilitate said rollers (118) to freely rotate on the outer periphery of said hub (108) in a disconnection state of said engine power and said transmission system facilitated by means of a clutch mechanism disposed between said pulley (102) and said hub (108).

6. Mechanically clutched pulley assembly as claimed in claim 2, wherein said inner hub assembly comprises:

• a hub (108) fitted with a plurality of guide pairs (128) mutually spaced apart and fitted on a surface facing the connection of said hub assembly to said transmission system by means of an internal spline made on the inner diameter thereof;

• a corresponding plurality of guide plates (124) constrained between said guide pairs to be slidable for extension outwards or retraction inwards of the central axis of said hub (108);

• a linkage mechanism connected to said guide plates (124) for facilitating an outward extension or inward retraction thereof by sliding between said guide pairs (128); and

• a hub cover (116) for covering said linkage mechanism disposed between said hub (108) and said hub cover (116);

wherein said roller (118) assemblies are connected to or disconnected from said hub (108) assembly by said outward extension or inward retraction of said guide plates (124) by operating said linkage mechanism by clockwise or anticlockwise rotation of said bush.

7. Mechanically clutched pulley assembly as claimed in claims 4 to 6, wherein said linkage mechanism comprises a bush (112) having three equilaterally spaced arms extending out from the center thereof; each of said arms having two holes at either end thereof for connecting a respective link (110) at the outer end thereof and a pin (126) at the other end thereof for fixing said hub cover (116) thereon.

8. Mechanically clutched pulley assembly as claimed in claim 7, wherein said hub cover (116) having a projection for supporting a three-pronged handle (114) fixed thereon by means of corresponding holes therein for operating said linkage mechanism for engaging or disengaging said roller assemblies with or from said guide plates (124).

9. Mechanically clutched pulley assembly as claimed in claim 6, wherein said guide plates (124) comprises two mutually spaced apart holes on one of the sides thereof facing said guides (128) for securing said guide plates (124) in a retracted position (P1) or an extended position (P2).

10. Mechanically clutched pulley assembly as claimed in claim 9, wherein one of said guides (128) facing said holes on said guide plate (124) comprises a respective through hole fitted with a ball (120) and compression spring (122) arrangement disposed inside said through hole for securing said guide plate (124) in said retracted position (P1) or said extended position (P2) .

Dated this 31st day of May 2018.
Digitally Signed.

(SANJAY KESHARWANI)
REGN. NO. IN/PA-2043
APPLICANT’S PATENT AGENT