CALIPER COVER DEVICE AND MOUNTING SYSTEM

FIELD OF THE INVENTION

[0001] The present subject matter relates generally to a caliper cover device and mounting system, and particularly to a caliper cover for a disc brake system in a rear wheel of a saddle type vehicle.

BACKGROUND OF THE INVENTION

[0002] Disc brakes are provided for shorter stopping distances and efficient heat dissipation as drum brakes became ineffective to take care of these problems with increased vehicle power and speed. A simple disc brake system, provided either at a front wheel or a rear wheel or at a front and a rear wheel, comprises of a disc (or a rotor) mounted on an axle (hub) of the wheel, a caliper assembly positioned proximately to the disc and clamping the radially outer edge of the disc with the help of brake pads provided therein. The brake pads are made of friction material and clamp the disc, when the disc brake system is operational, at a disc-brake pad interface which is the interface between the surface of the disc facing the brake pad and the respective surface of the brake pad facing the disc. The disc brake system usually comprises of at least two disc-brake pad interfaces lateral to the disc. The performance of the disc brake system depends on the disc, brake pad design and the friction material used in the brake pads.

[0003] Riding a saddle type vehicle fitted with the disc brake system is bothersome on unmetalled roads, in dirt and mud conditions or during a rainy season due to the impurities falling on the components of the disc brake system from all 360 degrees of the operating wheel thus spoiling the aesthetics of the disc brake system. These impurities in the form of mud, dust, wet soil, water and the like fall over the brake caliper surface and also enter into the disc-brake pad interface(s) from the recesses present in the brake caliper. Presence of these impurities between the brake pad and the disc, at the disc-brake pad interface, leads to reduced braking efficiency and dwindled life of the disc brakes. It also causes increased cost of ownership of the vehicle as the disc brake system requires frequent servicing to maintain the desired efficiency. There is thus a pressing need to restrict the entry of such impurities into the disc brake system and keep the disc-brake pad interface as well as the brake caliper clear from these impurities.

[0004] The aforementioned problems become further aggravated in the case of a disc brake system for a rear wheel. There are certain locational and behavioral disadvantages that differentiate a rear disc brake system from a front disc brake system. The vertical height from the ground at which a rear brake caliper is mounted on a rear wheel is lower than the height of a front brake caliper mounted on a front wheel. Thus, the probability of entry of impurities into the rear disc brake system is higher than in the front disc brake system. It is to be noted that the vehicle riders, especially in India, mostly operate rear brakes compared to the front brakes to slow down or to completely stop the vehicle.

[0005] Additionally when a rear disc brake is in operation, the resulting heat dissipation due to frictional engagement of the disc with the brake pad leads to an increase in temperature of the disc and the brake caliper. The cooling space available and the amount of air flow in the rear disc brake system is less than the front disc brake system due to comparative lack of open space and presence of adjacent structures, including engine, around the rear disc brake system. Any impurities on the brake caliper surface or those entering the disc-brake pad interface, coupled with the aforementioned conditions, reduce the durability of the rear disc brake system. Any further covering of the brake caliper would cause less cooling of the disc and the caliper and result in a possible overheating of the rear disc brake system. These limitations have to be kept in mind while designing a system to prevent the entry of impurities in a rear disc brake system.

[0006] Hence the present subject matter focusses only on a rear disc brake system and is directed to overcome one or more problems as set forth above. It is thus an object of the present subject matter to provide a caliper cover for a rear disc brake system of a saddle type vehicle that covers a brake caliper, recesses leading to disc-brake pad interface(s) as well as a portion of the disc itself in a rear disc brake system. It is also an object of the present subject matter to provide a simple, retrofittable and inexpensive caliper cover adapted to cool the brake caliper surface with channelled airflow. It is a further object of the present subject matter to provide a caliper cover device which can readily be adapted to fit different sizes and shapes of the brake caliper of the rear disc brake system.

SUMMARY OF THE INVENTION

[0007] To this end, the present subject matter discloses a caliper cover for a rear disc brake system of a saddle type vehicle partially covering a disc and substantially covering a brake caliper and a plurality of recesses leading to disc-brake pad interface(s). The caliper cover comprises a means for mounting the said caliper cover over the brake caliper, a means for locking the said caliper cover on the brake caliper, a means to incorporate a clearance between the caliper cover and the brake caliper to allow air cooling of the brake caliper, and a tray member to prevent entry or deposition of impurities falling from a rear fender or from the caliper cover on the disc, the brake caliper or the disc-brake pad interface collectively.

[0008] According to an aspect of the present subject matter, the caliper cover is removably attachable to the brake caliper and is made of any material including plastic resin or nylon. Moreover, the caliper cover has an upper surface facing towards a rear fender and an inner surface facing towards the brake caliper.

[0009] According to another aspect of the present subject matter, the inner surface of the caliper cover makes contact with the brake caliper at least at two places. The inner surface of a front and middle portion of the caliper cover makes a point contact with an upper surface of the brake caliper through the means to incorporate clearance between the caliper cover and the brake caliper, whereas the inner surface of the rear portion of the caliper cover engages with the rear bottom end of the brake caliper through the said locking means.

[00010] According to another aspect of the present subject matter, the caliper cover is mounted on and held over the brake caliper through at least two mounting means, a first mounting means comprising at least a pair of protrusions attaching the caliper cover to the brake caliper in a snap fit fashion, and a second mounting means including a hollow cylinder shaped projection protruding along the lateral axis of the caliper cover and adapted to fit over a caliper guide pin boss of the brake caliper.

[00011] According to yet another aspect of the present subject matter, the caliper cover is mounted on and assembled with the brake caliper in such a way that, firstly the hollow cylinder shaped projection slides over the caliper guide pin boss portion of the brake caliper, and secondly the pair of protrusions is pressed onto the brake caliper to snap fit the protrusions over the said brake caliper.

[00012] According to a further aspect of the present subject matter, the caliper cover can be used with a rear disc brake system provided in any saddle type vehicle including a motorcycle, moped and a scooter type motorcycle.

[00013] The foregoing objectives and summary provide only a brief introduction to the present subject matter. To fully appreciate these and other objects of the present subject matter as well as the subject matter itself, all of which will become apparent to those skilled in the art, the ensuing detailed description of the subject matter and the claims should be read in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[00014] The above and other features, aspects, and advantages of the subject matter will be better understood with regard to the following description, appended claims and accompanying drawings where:

Figure 1 shows a side view of a typical saddle type vehicle in the form of a motorcycle capable of accommodating the present subject matter.

Figure 2 shows a rear perspective view of a disc brake system incorporating a caliper cover in a rear wheel of the vehicle according to the present subject matter.

Figure 3 shows a side perspective view of the caliper cover according to the present subject matter.

Figure 4 shows a rear perspective view of the caliper cover according to the present subject matter.

Figure 5 shows a bottom view of the caliper cover according to the present subject matter.

Figure 6 shows a top view of the caliper cover according to the present subject matter.

Figure 7 shows a sectional view of the rear disc brake system along the lateral axis according to the present subject matter.

Figure 8 shows a sectional side view of the rear disc brake system illustrating the working of the caliper cover.

Figure 9 shows the caliper cover mounted on a brake caliper in the disc brake system according to the present subject matter.

DETAILED DESCRIPTION OF THE INVENTION

[00015] The subject matter described herein relates to a removably attachable caliper cover device which is capable of substantially preventing the deposition of impurities onto the surface of a brake caliper and a disc, and capable of preventing the entry of impurities into the disc-brake pad interface in a disc brake system for a rear wheel of a saddle type vehicle.

[00016] It is to be noted that the present subject matter is not dependent on the type of saddle type vehicle and therefore is equally workable with any saddle type vehicle capable of accommodating a disc brake system on its rear wheel, including a motorcycle, a scooter type motorcycle or a moped. Further "front" and "rear", and "left" and "right" referred to in the ensuing description of the illustrated embodiment refer to front and rear, and left and right directions as seen in a state of being seated on a seat of the saddle type vehicle. Furthermore, a longitudinal axis refers to a front to rear axis relative to the vehicle, while a lateral axis refers generally to a side to side, or left to right axis relative to the vehicle. Various other features and embodiments of the caliper cover according to the present subject matter here will be discernible from the following further description thereof, set out hereunder.

[00017] The caliper cover according to the present subject matter is now described in detail in connection with the rendered figures 1-9. The detailed explanation of the constitution of parts other than the subject matter which constitutes an essential part has been omitted at suitable places. Figure 1 shows a side view of a typical two wheeled saddle type vehicle in the form of a motorcycle capable of accommodating the present subject matter. The vehicle M comprises a body frame assembly made up of a number of tubes welded together. The vehicle M has a steerable front wheel 11 and a driven rear wheel 12. The body frame primarily includes a head pipe 1 disposed at a front end of the body frame, a main tube running across the longitudinal axis of the vehicle M and enclosed by several vehicle components, and a down tube 2. A front fork 3 is connected to the head pipe 1 through any known type of suspension system for the front wheel and rotatably carries the front wheel 11. The head pipe 1 supports a steering shaft (not shown) disposed inside the head pipe 1. The upper and lower ends of the steering shaft are fixed on an upper bracket and an under bracket (both not shown). The front end of the main tube and an upper end of the down tube 2 are connected to the head pipe 1. The down tube 2 extends obliquely downward in front of an engine 15 from the head pipe 1 whereas the main tube extends rearward from the front end thereof.

[00018] A front fender 4 is provided below the under bracket to avoid the vehicle and its occupants from being splashed with impurities including mud, water, wet soil and the like. Similarly, a rear fender 18 is provided proximately to the rear wheel 12. A fuel tank 5 is disposed above the main tube for storing the fuel for propelling the vehicle M. A seat 6 for a driver and a pillion is further provided, with the said seat 6 being placed behind the fuel tank 5 and rearwardly of the main tube.

[00019] The anterior portion of the vehicle placed forward to the fuel tank 5 comprises of a headlamp assembly, the headlamp assembly further comprising a headlamp 8 and a visor 7 placed forward to a handlebar assembly. The handle bar assembly further comprises of a handle bar 9 extending transversely to the vehicle and several control switches for various vehicle operations.

[00020] The said vehicle M is powered by the internal combustion engine 15 disposed below the main tube and supported by the down tube 2. The engine may be liquid-cooled or air-cooled. Drive force output from the engine 15 is transmitted to the rear wheel 12 through a transmission system 16.

[00021] Further, the rear wheel 12 revolves about a sprocket splined shaft (or axle) 13. The axle 13 is supported at each end by a swing arm 14, the swing arm in turn pivotally connected to the body frame of the vehicle M by a suspension 17. Generally a saddle type vehicle may use any of the two arrangements for rear suspensions, namely dual suspension and mono suspension. However the present vehicle is exemplified through a dual suspension system. Both suspensions in the suspension system are fixed at their upper ends to the vehicle frame and at their lower ends to the swing arm 14.

[00022] Figure 2 shows a rear perspective view of a disc brake system incorporating a caliper cover in the rear wheel of the vehicle according to the present subject matter. The disc brake system for the rear wheel 12 (also referred to as "rear disc brake system") is supported on the swing arm 14 and axle 13 of the vehicle and primarily comprises of a disc 21 and a brake caliper 22. The rear disc brake system is located laterally to the rear wheel 12. In a preferred embodiment, it is located toward the right side of the rear wheel 12. The brake caliper 22 comprises of a pair of brake pads made of friction material, one each present on either side of the disc 21. As known, for stopping or slowing the vehicle, the brake pads interact with the disc 21 on respective outer radial surfaces of the disc. The point of interaction would be called as the "disc-brake pad interface" 23, 24 in this description as shown in Figure 7. During the vehicle operation, the impurities in the form of mud, dust, water, wet soil and the like, fall on the upper surface of the brake caliper from all 360 degrees of the wheel operation, but mainly from the rear fender 18. The brake caliper also comprises recessed portions (not shown) on its upper surface, leading to disc-brake pad interface, through which impurities enter or are deposited on the disc radial surface(s), or the brake pad surface, or are trapped between the brake pad and the disc at the disc-brake pad interface(s). To prevent these impurities from entering, falling or getting deposited, a caliper cover 30 according to the present subject matter is positioned generally above the brake caliper in the rear disc brake system.

[00023] Figure 4 shows a rear perspective view of the caliper cover 30 according to the present subject matter. Broadly, the caliper cover body can be divided into three portions along the longitudinal axis respectively for the purpose of this description, a front portion 44 generally facing towards the engine, a middle portion 45 substantially facing towards the seat 6 and a rear portion 46 facing towards the rear fender 18. The middle portion 45 is generally a flat portion present in the middle of the caliper cover 30 extending substantially parallel to the upper surface of the brake caliper 22 covering the disc 21. From the middle portion 45, the front portion 44 extends obliquely forward and downward in the vehicle longitudinal direction. The rear portion 46, acting as a rear extension of the middle portion 45, obliquely extends rearward and downward. The front 44 and the rear 46 portion are connected to either side of the middle portion 45. Further, the caliper cover 30 has an upper surface 31 facing towards the rear fender 18 and an inner surface 32 facing towards the brake caliper 22.

[00024] Figure 3 shows a side perspective view of the caliper cover 30 according to the present subject matter. The caliper cover is removably attachable to the brake caliper 22 in such a way that the inner surface 32 of the caliper cover 30 faces the upper surface of the brake caliper 22. The caliper cover 30 partially covers the disc 21 and substantially covers the brake caliper 22 as well as the recesses in the upper surface of the brake caliper 22 leading to disc-brake pad interface(s). Thus the upper surface 31 of the caliper cover 30 substantially prevents the deposition of impurities onto the upper surface of the brake caliper 22 and a portion of the disc 21, and also prevents the entry of aforementioned impurities into the disc-brake pad interface(s). Further, the caliper cover 30 comprises of a means for locking the said caliper cover on the brake caliper, a means to incorporate a clearance between the caliper cover and the brake caliper, a tray member to prevent deposition of impurities falling from a rear fender on the caliper cover, the disc and the brake caliper, and a means for mounting the said caliper cover over the brake caliper, each of which would be explained in detailed now.

[00025] The means for locking the caliper cover 30 to the brake caliper 22 is positioned at the rear portion 46 of the caliper cover 30 at its rear most end. According to an aspect of the present subject matter, the said means comprises a plurality of wave-like projections 36, 37 extending laterally from the rear portion 46 and radially inward in the direction of the axle 13. Atleast two projections are present on each lateral side of the caliper cover. In the given Figure 3, the projections 37 are present on right side of the caliper cover 30 whereas the projections 36 are present on the left side of the caliper cover 30. The projections 36, 37 are configured to lock the said caliper cover 30 to the brake caliper 22 in such a way that the area 38 between two said projections on the inner surface 32 of the caliper cover 30 engages with the rear bottom end of the brake caliper 22. Thus the inner surface 32 of the rear portion 46 of the caliper cover 30 is locked onto the rear bottom end of the brake caliper 22 so that the caliper cover 30 does not detach due to high vibrations during the operation of the vehicle M.

[00026] Figure 5 shows a bottom view of the caliper cover according to the present subject matter. It shows the inner surface 32 of the caliper cover 30 provided with the means to incorporate a clearance between the caliper cover 30 and the brake caliper 22. According to an embodiment of the present subject matter, the said means may be in the form of a pip 43 or an elongation of a predetermined shape and size. The pip 43 is configured in such a way that the caliper cover 30 is rests on the brake caliper 22 through the pip 43 while making a point contact with the upper surface of the heated brake caliper 22. Moreover, the pip 43 is positioned on the inner surface 32 of the caliper cover 30 facing the site where the temperature of the upper surface of the brake caliper is lowest.

[00027] As shown in Figure 8, the pip 43 is present on the inner surface 32 of the caliper cover 30 in such a way that when the caliper cover 30 is completely mounted on to the brake caliper 22, a space (clearance) 47 is left between the inner surface 32 of the caliper cover 30 and the upper surface of the brake caliper 22 to allow air cooling of the brake caliper 22. Due to the clearance, the pip 43 prevents the inner surface 32 of caliper cover 30 from completely making contact with heated upper surface of the brake caliper 22 during operation. The air flows through the space 47 during vehicle operation thereby cooling brake caliper 22 and maintaining its surface temperature within permissible limits further preventing the melting of the caliper cover 30. Thus, the caliper cover 30 allows the sufficient amount of air to flow over the brake caliper and at the same time substantially prevents the entry of impurities from longitudinal as well as vertically downward directions.

[00028] Further, as shown in Figure 3 and 4, a tray member 39 is provided to prevent the deposition of impurities including mud, dust, water and the like falling directly on the upper surface 31 of the caliper cover 30 from the rear fender 18. The tray member 39 also prevents entry of impurities falling from the caliper cover 30 on the disc 21 and brake caliper 22. In an embodiment of the present invention, the tray member 39 is located at the rear most end of the rear portion 46 of the caliper cover 30 slightly elongated in the vehicle width direction and further raised towards the top to form a curve shape. Due to the construction of the caliper cover, the impurities falling on the caliper cover 30 slide towards its rear portion 46. The tray member 39 causes the impurities, including water, to further slide laterally on either side of the caliper cover and thereafter leave the caliper cover 30. The impurities on the caliper cover 30 slide away from the disc 21 laterally rather than directly falling onto the disc 21 from the rear portion of the caliper cover 30. Thus, the curve structure of the tray member 39 does not allow the impurities, mainly water, to enter or deposit on the caliper cover 30, disc 21 or the brake caliper 22.

[00029] According to an aspect shown in Figure 3 and 4, a raised lining 33 (or a rib), on the upper surface 31 of the caliper cover 30 is provided to indicate the exact position of the disc 21 beneath the brake caliper 22 in the rear disc brake system. The rib is located along the longitudinal axis of the caliper cover 30. It is fully stretched along the middle portion 45 of the caliper cover 30 and covers a major portion of the front 44 and rear 46 portions. It is slightly raised from the upper surface 31 towards the rear fender 18. The rib 33 may also act as a styling part, improving the aesthetics of the rear disc brake system.

[00030] Figure 6 shows a top view of the caliper cover according to the present subject matter. According to an aspect of the present subject matter, when viewed from the top, the middle portion 45 of the caliper cover 30 is not continuous in width and is slightly interior than the other two portions. This construction helps the caliper cover 30 to keep away from the adjacent structures including the brake hose, which can otherwise be subjected to wear and tear, on continuous interaction with the caliper cover edges during assembly or operation.

[00031] Furthermore, the caliper cover 30 is attached to the brake caliper 22 by the means for mounting the said caliper cover over the brake caliper. According to an aspect, the said means include a first mounting means and a second mounting means. The first mounting means includes at least a pair of protrusions 34, 35 one each present on either side of the said caliper cover 30 as shown in Figure 3. These protrusions extend laterally and downwardly generally from the middle portion 45 of the caliper cover 30, and enclose the brake caliper 22 when the caliper cover 30 is pressed against the brake caliper 22 in a snap fit fashion. The caliper cover 30 thus uses a snap fit joint to mount itself on the brake caliper 22. The snap fit joint removes the need for any modifications in the brake caliper 22 to accommodate the caliper cover 30 as well as the need for a separate fastener.

[00032] The second mounting means includes a hollow cylinder shaped projection 40 projecting along the lateral axis of the said caliper cover 30 generally from the right side of the caliper cover 30 and configured to fit to a caliper guide pin boss (not shown) of the said brake caliper 22. The said cylinder shaped projection 40 comprises a completely covered top portion 41 facing towards the rear fender 18 and a partially open bottom portion with a rectangular slit 42 as shown in Figure 5. The first and second mounting means jointly prevent the vertical and sideward movement of the caliper cover 30 during the movement of the vehicle in the absence of a fastener. The hollow cylinder shaped projection 40 is generally located in the front portion 44 of the caliper cover 30.

[00033] Figure 9 shows the mounting of the caliper cover over the brake caliper. The caliper cover 30 is mounted on and assembled with the brake caliper 22 in such a way that, firstly the hollow cylinder shaped projection 40 slides over the caliper guide pin boss portion of the brake caliper through the slit 42, and secondly the pair of protrusions 34, 35 is pressed onto the brake caliper 22 to snap fit the protrusions over the brake caliper 22 and completely mount the caliper cover 30..

[00034] According to another aspect, a fastener may be used to mount the caliper cover 30 on the brake caliper 22 when the snap fit joint is unfeasible or variation in snap fit joint is high. In another embodiment of the present subject matter, the rear portion 46 of the caliper cover 30 may have a provision to mount on brake caliper 22 by means of the fastener and the front portion 44 may be mounted with the help of hollow cylinder shaped projection 40 in the aforementioned fashion.

[00035] According to a further aspect of the present subject matter, the projections 36, 37 at the rear portion 46 of the caliper cover 30 prevent the fall of the caliper cover 30 when either or both the snap fit joints in the middle portion 45 break or become weak or if the snap joint force is not enough due to manufacturing inconsistencies.

[00036] As is evident, the inner surface 32 of the caliper cover 30 makes contact with the brake caliper 22 at least at two places. The inner surface 32 of a front 44 and middle 45 portion of the caliper cover makes a point contact with an upper surface of the brake caliper 22 through the means (pip 43) to incorporate clearance between the caliper cover and the brake caliper, and the inner surface of the rear portion 46 of the caliper cover engages with the rear bottom end of the brake caliper through the said locking means (wave like projections).

[00037] The present subject matter and its equivalent thereof offer many advantages, including those which have been described henceforth. The caliper cover proposed in the present subject matter partially covers the disc and substantially covers the brake caliper and its recesses leading to disc-brake pad interface(s). When the saddle type vehicle passes over impurities including water, dust, mud or the like, the impurities are splashed on the rear fender from the ground due to the centrifugal force of rear wheel rotation. The caliper cover acts as a jacket against such impurities shielding the recesses present in the brake caliper and the disc-brake pad interface(s), preventing the deposition of such impurities and also inhibiting their entry in vertically downward direction from the rear fender on the brake caliper. The prevention of entry of impurities would thus leads to improved braking efficiency and reduced servicing costs.

[00038] The caliper cover allows the brake caliper to cool using the air flow on the moving vehicle while maintaining its protective ability, easily assembles and disassembles from the brake caliper without special tools in a simple and quick fashion and provides visual enhancement of the disc brake system. The said caliper cover is removably attachable to the caliper using the mounting means and the locking means. Consequently, it can be attached to the brake caliper and removed easily for cleaning purposes or as and when required. Further, the caliper cover may be made of a material including plastic resin or nylon.

[00039] Furthermore, for attachment to the brake caliper, the caliper cover requires only one pair of projections configured to snap fit with the brake caliper and the hollow cylinder shaped projection, removing the need for fasteners. The caliper cover is therefore modest in construction and can be manufactured at a relatively low cost. Also, it is retrofittable to the existing rear disc brake systems as it does not require any modification in the brake caliper.

[00040] The present subject matter is thus described. The description is not intended to be exhaustive nor is it intended to limit the invention to the precise form disclosed. It will be apparent to those skilled in the art that the disclosed embodiments may be modified in light of the above description. The embodiments described are chosen to provide an illustration of principles of the invention and its practical application to enable thereby one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. Therefore the forgoing description is to be considered exemplary, rather than limiting, and the true scope of the invention is that described in the appended claims.

I/We claim:

1. A caliper cover for partially covering a disc and substantially covering a brake caliper in a disc brake system for a rear wheel of a saddle type vehicle, the said brake caliper comprising a plurality of recessed portions leading to a disc-brake pad interface, the said caliper cover comprising:

a means for locking the said caliper cover on the brake caliper,

a means to incorporate a clearance between the caliper cover and the brake caliper to allow air cooling of the brake caliper,

a tray member to prevent entry and deposition of impurities falling from a rear fender on the caliper cover, the disc or the brake caliper, and

a means for mounting the said caliper cover over the brake caliper, wherein the said caliper cover is removably attachable to the said brake caliper.

2. The caliper cover as claimed in claim 1, wherein the means for mounting the said caliper cover over the brake caliper include a first mounting means and a second mounting means,

the first mounting means including at least a pair of protrusions, one each on either side of the said caliper cover, the said protrusions extending laterally and downwardly from a middle portion of the caliper cover, attaching the said caliper cover to the said brake caliper in a snap fit fashion, and

the second mounting means including a hollow cylinder shaped projection configured to fit to a caliper guide pin boss of the said brake caliper, projecting along the lateral axis of the said caliper cover, comprising a completely covered top portion and a partially open bottom portion with a slit, wherein the said caliper cover is mounted on and assembled with the said brake caliper in such a way that, firstly the said hollow cylinder shaped projection slides over the caliper guide pin boss portion of the brake caliper and secondly the said pair of protrusions is pressed onto the brake caliper to snap fit the said protrusions over the said brake caliper.

3. The caliper cover as claimed in claim 1, wherein the said means for locking the said caliper cover to the brake caliper comprises a plurality of wave-like projections extending laterally from a rear portion of the caliper cover and radially inward in a wheel axle direction, the projections configured to lock the said caliper cover to the brake caliper in such a way that the area between two said projections engages the rear bottom end of the said brake caliper.

4. The caliper cover as claimed in claim 1, wherein the said means to incorporate a clearance between the caliper cover and the brake caliper comprises a pip of a predetermined shape, present on the inner surface of the said caliper cover in such a way that when the said caliper cover is completely mounted on to the brake caliper, a space is left between the caliper cover and the brake caliper to allow air cooling of the brake caliper when the disc brake is in operation.

5. The caliper cover as claimed in claim 1, wherein a raised lining on an upper surface of the said caliper cover is provided to indicate the exact position of the said disc beneath the brake caliper in the disc brake system.

6. The caliper cover as claimed in claim 1, 3 and 4, wherein the inner surface of the front and middle portion of the caliper cover makes a point contact with the upper surface of the brake caliper through the said pip and wherein the inner surface of the rear portion of the said caliper cover makes contact with the rear bottom end of the brake caliper through the said locking means.

7. The caliper cover as claimed in claim 1, wherein the said caliper cover may be made of any material including plastic resin or nylon.

8. A caliper cover configured to substantially cover an upper surface of a brake caliper including recessed portions thereof, in a rear disc brake system, the caliper cover being removably attachable to the brake caliper, the caliper cover comprising:

a plurality of wave-like projections extending laterally from a rear end of the caliper cover and radially inward in a wheel hub direction for locking the caliper cover to the brake caliper,

a pip to incorporate a clearance between the caliper cover and the brake caliper for air cooling of the brake caliper,

a raised lining to indicate the exact position of a disc beneath the brake caliper,

a tray member to prevent entry and deposition of impurities falling from a rear fender on the caliper cover, the disc or the brake caliper,

a first mounting means including at least a pair of protrusions, extending laterally and downwardly from a middle portion of the caliper cover, attaching the said caliper cover to the said brake caliper in a snap fit fashion, and

a second mounting means including a hollow cylinder shaped projection with a completely covered top portion and a partially open bottom portion with a slit, a caliper guide pin boss portion of the brake caliper sliding into the said slit of the said caliper cover. 9. A caliper cover substantially as herein described and illustrated by the accompanying drawings.