CA2356126A1 - Track conversion kit for dirt bikes - Google Patents
Track conversion kit for dirt bikes Download PDFInfo
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- CA2356126A1 CA2356126A1 CA 2356126 CA2356126A CA2356126A1 CA 2356126 A1 CA2356126 A1 CA 2356126A1 CA 2356126 CA2356126 CA 2356126 CA 2356126 A CA2356126 A CA 2356126A CA 2356126 A1 CA2356126 A1 CA 2356126A1
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- wheel
- drive
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Abstract
This present invention provides a novel form of track conversion kit for dirt bikes, comprising: a frame with means of coupling to a dirt bike chasis. A drive chain and sprocket transfers power from the dirt bike engine to a driven sprocket on a counter shaft supported by the frame. The driven sprocket on the counter shaft drives a drive sprocket mounted to the drive shaft supporting the track drive sprocket for propelling an endless drive track. A front stationary suspension shaft supports swing arms for supporting the front ends of the wheel rails. A rear stationary suspension shaft supports idler wheels for supporting the upper run of the endless drive track. A shock absorber is supported by the rear stationary suspension shaft and by the wheel rails second stationary shaft. A plurality of idler wheels and a rear guide wheel are supported by the wheel rails and wheel rails fourth shaft. The suspension has an adjusting rod for adjusting the tension on the shock absorber for different riding conditions.
Description
Background of tire Invention:
The present invention provides a novel form of track conversion kit for dirt bikes, having a frame with a front lateral section and parallel left and right longitudinal side members. A counter shaft is rotatably mounted to the front portion of the longitudinal frame members by means of bearings and bearing blocks. A driven and drive sprocket are fixed to said counter shaft by means of a keyway and keys held in place by collars and set screws. The dirt bike engine drive sprocket and chain transfers power to a driven and drive sprocket on said counter shaft. Said drive sprocket on said counter shaft transfers power by means of a chain to the driven sprocket and the track drive sprocket fixed to a rotatably mounted drive shaft supported by bearings and bearing blocks fixed to the longitudinal side members of the frame. Said counter shaft has a long keyway for adjusting the driven sprocket laterally for aligning with said engine drive sprockets of different makes and models of dirt bikes. Most dirt bikes have the engine drive sprocket on the left side of the engine and other dirt bikes have the drive sprocket on the right side of the engine.
The adjustable driven sprocket on the counter shaft can be easily adjusted to align with the drive sprockets on all makes and models of dirt bikes.
Reference is made to Canadian patent, number 0200299T, Fig.1 a saddle-riding type compact snowmobile is provided with a steering ski at the front portion of the vehicle body and with an endless trade device having an endless track belt at the rear portion of the vehicle body. The endless track device is driven by an engine mounted to said snowmobile body.
The endless track device is coupled to said vehicle body by the rear fork. The front Left portion of the rear fork accommodates an intermediate sprocket to be driven by the engine drive sprocket through a first chain, and a second intermediate sprocket supported coaxially with the first intermediate sprocket connected through a second chain to the driven sprocket for the endless drive belt.
This type of drive mechanism is restricted to the alignment of a particular engine drive sprocket, and therefore cannot be used on other motorcycle type bodies if the engine drive sprocket does not align with the intermediate sprocket without making modifications to align the intermediate sprocket with the engine drive sprocket. Furthermore, some dirt bikes and motorcycles have the engine drive sprockets mounted on the right side of the engine. This would make it impossible to drive the endless track device in question without making major changes to the drive mechanism. Therefore the endless belt track device in the above patent is not designed to be used on different makes and models of motorcycles or dirt bikes.
Unlike the track device referred to in Cdn. Patent number. 02002997, the present invention provides a means of aligning the drive mechanism of the track conversion kit to different makes and models of dirt bikes by having a counter shaft extending the width of the track frame. The driven sprocket on said counter shaft is adjustable and can be moved from left to right on said counter shaft to align with the engine drive sprocket on the left or right side of the engine. The drive sprocket on said counter shaft is fixedly supported to align with the driven sprocket on the track drive shaft.
Again referring to Cdn. Patent no. 02002997, the rear fork of the endless track device is formed at its front end with a pair of pivot portions to be pivotally connected to tl~ rear portion of the engine, and to a pair of right and left gussets by a common shaft. The endless track device is limited to a connecting space between the rear portion of the engine and the right and left gussets. Therefore, the endless track device referred to in patent number.
02002997 can only connect to a vehicle body designed to the specifications to match the rear fork of the endless track device. Whereas, the track conversion kit in the present invention has coupling arms connected to the lateral member of the frame with sleeves having bushings or bearings attached to the outer tips of said coupling arms for connecting to a dirt bike chasis having different widths.
Said sleeves have a fixed length for connecting to dirt bikes having a narrow chasis. For dirt bikes having a wider d~asis, a series of spacers can be used to eliminate any free play between the dirt bike chasis and said coupling sleeves supported by said coupling arms. This will allow the track conversion kit in the present invention to connect to all makes and models of dirt bikes.
Again reference is made to Cdn. Patent no. 02002997 wherein rear arms are connected to the rear portion of the front fork and are rotatably independent of ane another. A set of guide wheels are connected to a pair of arms for holding the track firmly on the ground. It appears that a small dampening shock absorber is attached to the upper guide wheel arm and the rear section of the front fork to help smoothen the rippling effect of the rear portion of the track bearing on the ground. The only suspension for the endless track device on this vehicle is the shock absorber attached to the body of the vehicle and to the front portion of the rear fork.
assembly. This type of suspension works well for dirt bikes and motorcycles since there is a cushioning effect from the wheel's inflated tire. Also a dirt bike or motorcyGe rear tire has a reasonably small contact point with the ground and would have less impact with the ground than a track device would have. When riding over rough terrain the track device will create a hard and uncomfortable ride due to the lack of a suspension system mounted directly on the track device. Whereas in the present invention a shock absorber is mounted between the track frame and the wheel rails, having a substantial amount of travel and delivering a smooth ride over rough terrain. It will also cushion the impact from jumps. The track suspension in the present invention has an adjustment device that can be used without tools for adjusting the suspension for jumps or other desired riding conditions. Another problem with the prior art endless track device is the large diameter of the front drive wheel used for propelling the endless track. When it is necessary to increase engine torque for propelling the endless track the torque will be transferred to the large drive wheel propelling the endless track, this will cause the rear portion of the endless track to lift, or decrease its firmness on the surface it is travelling over reducing traction and controlabitity. Whereas in the present invention the endless drive track has a relatively small drive track sprocket transferring torque from the vehicle's engine to the endless drive track. Engine torque is countered by the bottom run of the track bearing on the ground having a firm contact with the ground due to the pressure distributed to the wheel rails from the track shock absorber.
Yet another problem pertaining to the suspension of the snow vehicle in the prior art is the impact on the endless track device when the vehicle is used for jumps. The shock absorber mounted to the body of the vehicle and the front portion of the endless track device will help cushion the impact for the rider, but the endless track device will endure a sudden impact when it lands on the surface it is driven over due to the endless track device not having a shock absorber, this can cause damage to the endless track devise. Even a dirt bike or motorcycle tire will absorb some of the impact, whereas the endless drive track device will have a tremendous impact with the ground,. possibly damaging the endless drive track device. In the present invention when doing jumps, the shock absorber supported by the track conversion kit frame and wheel rails will cushion the impact on the track and will provide a soft landing without damaging the track mechanism.
Yet another problem with the endless drive track in the prior art is the lack of an incline to the front of the endless track. This will cause the endless track to plough through the snow rather than compacting the snow for increased flotation as would a conventional snowmobile.
Whereas the track in the present invention has an incline at the front of the track for compacting the snow allowing the track to have greater flotation in snow or on soft terrains. In the present invention there is adequate space between the endless track and track cover, as well as openings along the sides of the track cover, to release snow or other debris inside the endless track frame.
Again reference is made to Cdn. Patent number 0200299T Fig. 15 showing the endless track in a banked position for turning the vehicle. According to Fig. 15 the lateral side portion of said track is forced in a flat position on the ground. In Cdn. Patent number 2032462 Fig.11 it is obvious that this particular type of track while in a banked position for turning is flexible near the lateral edges of the track having a flat lateral portion of the track bearing on the ground. Some of the problems with this type of track are: in cold conditions for snow use the rubber will be stiff and more difficult to flex for banking and turning; the flexing portion of the track will cause the rubber to weaken and reduce the Life of the track considerably; when the track is banked for turning and having a flat lateral portion of the track bearing on the ground, the rest of the track is lifted considerably off the ground; when the vehicle and the endless track is returned to an upright position there is no support for the track and it will free fall back to the ground possibly causing a control problem. In the present invention the endless drive track has a caved profile similar to a wide elongated dirt bike tire and a portion of the track will always have contact with the ground allowing it to ease in and out of banked positions for taming as would a dirt bike.
Summary of the invention:
The present invention provides a novel form of track conversion kit that is adaptable to most makes and models of dirt bikes currently on the market. Comprising, a frame having a lateral front member and two parallel longitudinal side members. Said lateral front member has two fixed coupling arms with sleeves. Said sleeves having bearings or bushings for pivotally mounting said frame to the chasis of a dirt bike by means of the dirt bike swing arm shaft. The front portion of said frame supports a rotatably mounted counter shaft supported by bearing blocks mounted to said parallel longitudinal side members. Said bearing blocks are mounted to said longitudinal side members by threaded bolts and locknuts through holes in said longitudinal side members, and by elongated mounting holes in said bearing blocks. Said bearing blocks are adjustable by adjusting bolts and brackets fixed to said frame and said bearing blocks for adjusting the tension on a chain between the dirt bike engine sprocket and a driven sprocket on a counter shaft. Said counter shaft accommodates a driven and a drive sprocket and a brake disc. Said driven sprocket on said counter shaft is driven by the dirt bike engine drive sprocket and a first drive chain. Said drive sprocket on said counter shaft and a second drive chain drives a driven sprocket on an endless drive track drive shaft. Said endless drive track drive shaft accommodates a drive sprocket common to conventional snowmobiles for propelling said endless drive track. Said drive shaft and said endless drive track drive sprocket for propelling said endless drive track is mounted to said longitudinal side members by bearing blocks supported by threaded bolts and locknuts through holes in said longitudinal side members, and elongated mounting holes in said bearing blocks. Said endless drive track resembles a wide elongated dirt bike tire. Said endless drive track has a curved outer profile with a low centre of gravity having tread blocks and tread sections for increased traction, and having an inner flat surtace with a drive means thereon. Said curved outer profile provides a leaning angle equivalent to a dirtbike tire and it can be used on all types of terrain including snow. Said endless drive trek drive sprocket is centrally located on said endless drive track drive shaft and is secured by a keyway and a key having a collar with a set screw. A left and right support wheel is fixedly mounted on said endless drive track drive shaft for supporting the outer edges of said endless drive track. A left and right idler wheel is rotatably mounted to a stationary secondary suspension shaft supported by the rear section of said longitudinal side members by holes and threaded bolts into threaded holes in the ends of said shaft. A
shock absorber with its top end connected to a cluster bracket is supported by said stationary secondary suspension shaft. Said shock absorber bottom end is connected to a stationary second shaft supported by the wheel rails. Said wheel rails are supported by swing arms in the front supported by a first stationary suspension shaft and by said shock absorber at the rear supported by a stationary second wheel rail support shaft providing said endless drive trade with a firm contact on the surface it is being driven over. The rear portion of said wheel rails support a guide wheel for guiding the back end of the endless drive track for proper alignment with said endless drive track sprocket. A series of idler wheels are spaced at intervals longitudinally along said wheel rails to facilitate the rotation of the lower run of the endless drive track bearing on the ground with minimal friction. A spring loaded adjustment rod for adjusting said shock absorber to increase or decrease its tension for different riding conditions has its top end attached to said cluster bracket supported by said stationary second suspension support shaft.and by the longitudinal side members, and to a stationary third wheel rail shaft supported by said wheel rails. Said spring loaded adjusting rod is easily adjusted by hand without having to use tools.
Said endless drive track is held in place by the endless drive track drive lugs and drive sprocket in the front, supported by the endless drive track drive shaft and bearing blocks supported by said longitudinal side members; by the rotatably mounted idler wheels supported by said secondary stationary suspension shaft supported by the rear portion of said longitudinal side members, and by the guide wheel and idler wheels supported by the forth wheel rails shaft, and by the plurality of smaller idler wheels supported at intervals from the front to the rear portion of said wheel rails. Said shock absorber presses the lower run of said endless drive track firmly on the ground for increased traction.
Said second drive chain and said endless drive track are adjusted by adjusting bolts having a bracket fixed to the rear portion of said wheel rails, and a wllar supported by the ends of said fourth wheel rail shaft supported by the rear portion of said wheel rails. Said adjusting bolts will adjust the tension independently on both said second drive chain and said endless drive track. For adjusting said second drive chain the bolts supporting said drive shaft bearing blocks to said longitudinal side frame members will be untightened and the adjustment will be done by said endless drive track adjusting bolts at the rear portion of said wheel rails. When the proper tension on said second chain is set said bearing block boits will be tightened, securing the tension on said second drive chain. Then said endless drive track will be adjusted for the proper tension and secured by the endless drive track adjusting bolts and locknuts at the ends of forth stationary shaft.
A ski mechanism interchangeable with the dirt bike wheel for snow use comprising a frame having a u-shape bracket at its lower end and a cross member at its top end supported by vertical support brackets integral of u-shape bracket and said top end cross member. A tubular post is centrally fixed to said u-shape bracket and to said top cross member.
A bushing is inserted into the top end of said tubular post for accommodating a vertical shaft. Said vertical shaft has its top end supported by a spline in the centre of a two piece bolt on bracket. Said bolt on bracket bolts to the upper portion of the front fork assembly of the dirt bike. The bottom end of said vertical shaft is supported by the top end of said tubular post and bushing. Said vertical shaft fits into said tubular post and said bushing with a close tolerance, permitting said vertical shaft to move up and down inside said tubular post in accordance to the up and down movement of the front fork shock assembly. Said ski mechanism is supported to the dirt bike front fork assembly by bolts through the existing holes used for mounting the dirt bike wheel, and by said bolt on bracket.
A ski having a longitudinal centre curve with a guide bar and two longitudinal side curves having anti skid bars. Said side curves have top flared edges for preventing lateral slippage and for increasing the controllability of the ski when the dirt bike is performing its maximum maneuvers. Said ski is detachably mounted to said ski mechanism by a shaft with threaded ends and locknuts.
Briet Description Of The Drawings Fig.1 is a side view of the track conversion kit coupled to the rear section of a dirt bike chasis in the preferred embodiment of the present invention.
Fig. 2 is a side view of another embodiment of the track conversion kit.
Fig. 3 is a plan view of Fig. 1 and Fig. 2.
Fig. 4 is an isometric view of the endless drive track.
Fig. 5 is a top view of a cross section area of the endless drive track meshing with the drive track sprocket and support wheels in the front.
Fig. 6 is a top view of a aoss section area of the endless drive track meshing with the guide wheel and idler wheels at the back.
Fig. 7 is an isometric view of the track conversion kit frame.showing torsion bars and brackets and coupling arm spacers.
Fig. 8 is an enlarged sectional view of the counter shaft and bearing blocks with an adjusting mechanism.
Fig. 9 is an enlarged exploded view of the shock absorber suspension mechanism.
Fig.10 is an enlarged view of the w~el rail and the endless drive track adjusting mechanism.
Fig.11 is a front view of a ski device for interchanging with a dirt bike wheel for snow use.
Specifications:
Reference is made firstly to Fig.1 which illustrates a track conversion kit having a frame 2 with a front lateral member and left and right longitudinal side members.
Said front lateral member supports coupling arms 4 and sleeves 6 for coupling to the rear section of a dirt bike chasis 8 and a shock absorber 9. Said frame 2 has a vertical support bracket 2a, torsion bars 2b, torsion bar brackets 2c, coupling shaft 2d, coupling spacers 2e, and a iwo piece torsion bar support bracket 2f and a shock absorber bracket 9a as shown in Fig. 7. A
cowling 3 for covering the top portion of a track and track mechanism.is shown in Fig. 1.
Said cowling 3 will protect the rider from snow and other debris that would be scattered from said drive track. Said cowling 3 is designed to have an aerodynamic airflow to reduce drag and to help keep the cowling free from snow and other debris when the vehicle is in motion. Dirt bike chasis 8 has an engine 10 having a drive sprocket 12 and a first drive chain 14. Said first drive chain 14 drives a driven sprocket 16 on counter shaft 18 as shown in Fig. 3. Said counter shaft 18 has a long keyway 12 having keys 13 and collars 13a with set srews for securing a driven sprocket 16, a drive sprocket 20 and a brake disc 25 on counter shaft 18. Said counter shaft long keyway 12 will allow driven sprocket 16 to be adjusted laterally for aligning with different makes and models of dirt bikes drive sprockets. Said brake disc caliper is supported by a bracket 21 supported by said frame 2. An adjusting mechanism for adjusting the tension on said first drive chain 14 is shown in an enlarged view in Fig. 8. Said bearing blocks 22 has an integral support bracket 22a for accommodating an adjusting bolt 22d supported by bracket 22b fixdely supported by said frame 2. Said bracket 22b has retaining washers 22c for adjusting said bearing blocks 22 as shown in Fig. 8 Drive sprocket 20 on counter shaft 18 drives a driven sprocket 28 on drive shaft 32 by a second drive chain 19 and said drive shaft 32 as shown in Fig.
The present invention provides a novel form of track conversion kit for dirt bikes, having a frame with a front lateral section and parallel left and right longitudinal side members. A counter shaft is rotatably mounted to the front portion of the longitudinal frame members by means of bearings and bearing blocks. A driven and drive sprocket are fixed to said counter shaft by means of a keyway and keys held in place by collars and set screws. The dirt bike engine drive sprocket and chain transfers power to a driven and drive sprocket on said counter shaft. Said drive sprocket on said counter shaft transfers power by means of a chain to the driven sprocket and the track drive sprocket fixed to a rotatably mounted drive shaft supported by bearings and bearing blocks fixed to the longitudinal side members of the frame. Said counter shaft has a long keyway for adjusting the driven sprocket laterally for aligning with said engine drive sprockets of different makes and models of dirt bikes. Most dirt bikes have the engine drive sprocket on the left side of the engine and other dirt bikes have the drive sprocket on the right side of the engine.
The adjustable driven sprocket on the counter shaft can be easily adjusted to align with the drive sprockets on all makes and models of dirt bikes.
Reference is made to Canadian patent, number 0200299T, Fig.1 a saddle-riding type compact snowmobile is provided with a steering ski at the front portion of the vehicle body and with an endless trade device having an endless track belt at the rear portion of the vehicle body. The endless track device is driven by an engine mounted to said snowmobile body.
The endless track device is coupled to said vehicle body by the rear fork. The front Left portion of the rear fork accommodates an intermediate sprocket to be driven by the engine drive sprocket through a first chain, and a second intermediate sprocket supported coaxially with the first intermediate sprocket connected through a second chain to the driven sprocket for the endless drive belt.
This type of drive mechanism is restricted to the alignment of a particular engine drive sprocket, and therefore cannot be used on other motorcycle type bodies if the engine drive sprocket does not align with the intermediate sprocket without making modifications to align the intermediate sprocket with the engine drive sprocket. Furthermore, some dirt bikes and motorcycles have the engine drive sprockets mounted on the right side of the engine. This would make it impossible to drive the endless track device in question without making major changes to the drive mechanism. Therefore the endless belt track device in the above patent is not designed to be used on different makes and models of motorcycles or dirt bikes.
Unlike the track device referred to in Cdn. Patent number. 02002997, the present invention provides a means of aligning the drive mechanism of the track conversion kit to different makes and models of dirt bikes by having a counter shaft extending the width of the track frame. The driven sprocket on said counter shaft is adjustable and can be moved from left to right on said counter shaft to align with the engine drive sprocket on the left or right side of the engine. The drive sprocket on said counter shaft is fixedly supported to align with the driven sprocket on the track drive shaft.
Again referring to Cdn. Patent no. 02002997, the rear fork of the endless track device is formed at its front end with a pair of pivot portions to be pivotally connected to tl~ rear portion of the engine, and to a pair of right and left gussets by a common shaft. The endless track device is limited to a connecting space between the rear portion of the engine and the right and left gussets. Therefore, the endless track device referred to in patent number.
02002997 can only connect to a vehicle body designed to the specifications to match the rear fork of the endless track device. Whereas, the track conversion kit in the present invention has coupling arms connected to the lateral member of the frame with sleeves having bushings or bearings attached to the outer tips of said coupling arms for connecting to a dirt bike chasis having different widths.
Said sleeves have a fixed length for connecting to dirt bikes having a narrow chasis. For dirt bikes having a wider d~asis, a series of spacers can be used to eliminate any free play between the dirt bike chasis and said coupling sleeves supported by said coupling arms. This will allow the track conversion kit in the present invention to connect to all makes and models of dirt bikes.
Again reference is made to Cdn. Patent no. 02002997 wherein rear arms are connected to the rear portion of the front fork and are rotatably independent of ane another. A set of guide wheels are connected to a pair of arms for holding the track firmly on the ground. It appears that a small dampening shock absorber is attached to the upper guide wheel arm and the rear section of the front fork to help smoothen the rippling effect of the rear portion of the track bearing on the ground. The only suspension for the endless track device on this vehicle is the shock absorber attached to the body of the vehicle and to the front portion of the rear fork.
assembly. This type of suspension works well for dirt bikes and motorcycles since there is a cushioning effect from the wheel's inflated tire. Also a dirt bike or motorcyGe rear tire has a reasonably small contact point with the ground and would have less impact with the ground than a track device would have. When riding over rough terrain the track device will create a hard and uncomfortable ride due to the lack of a suspension system mounted directly on the track device. Whereas in the present invention a shock absorber is mounted between the track frame and the wheel rails, having a substantial amount of travel and delivering a smooth ride over rough terrain. It will also cushion the impact from jumps. The track suspension in the present invention has an adjustment device that can be used without tools for adjusting the suspension for jumps or other desired riding conditions. Another problem with the prior art endless track device is the large diameter of the front drive wheel used for propelling the endless track. When it is necessary to increase engine torque for propelling the endless track the torque will be transferred to the large drive wheel propelling the endless track, this will cause the rear portion of the endless track to lift, or decrease its firmness on the surface it is travelling over reducing traction and controlabitity. Whereas in the present invention the endless drive track has a relatively small drive track sprocket transferring torque from the vehicle's engine to the endless drive track. Engine torque is countered by the bottom run of the track bearing on the ground having a firm contact with the ground due to the pressure distributed to the wheel rails from the track shock absorber.
Yet another problem pertaining to the suspension of the snow vehicle in the prior art is the impact on the endless track device when the vehicle is used for jumps. The shock absorber mounted to the body of the vehicle and the front portion of the endless track device will help cushion the impact for the rider, but the endless track device will endure a sudden impact when it lands on the surface it is driven over due to the endless track device not having a shock absorber, this can cause damage to the endless track devise. Even a dirt bike or motorcycle tire will absorb some of the impact, whereas the endless drive track device will have a tremendous impact with the ground,. possibly damaging the endless drive track device. In the present invention when doing jumps, the shock absorber supported by the track conversion kit frame and wheel rails will cushion the impact on the track and will provide a soft landing without damaging the track mechanism.
Yet another problem with the endless drive track in the prior art is the lack of an incline to the front of the endless track. This will cause the endless track to plough through the snow rather than compacting the snow for increased flotation as would a conventional snowmobile.
Whereas the track in the present invention has an incline at the front of the track for compacting the snow allowing the track to have greater flotation in snow or on soft terrains. In the present invention there is adequate space between the endless track and track cover, as well as openings along the sides of the track cover, to release snow or other debris inside the endless track frame.
Again reference is made to Cdn. Patent number 0200299T Fig. 15 showing the endless track in a banked position for turning the vehicle. According to Fig. 15 the lateral side portion of said track is forced in a flat position on the ground. In Cdn. Patent number 2032462 Fig.11 it is obvious that this particular type of track while in a banked position for turning is flexible near the lateral edges of the track having a flat lateral portion of the track bearing on the ground. Some of the problems with this type of track are: in cold conditions for snow use the rubber will be stiff and more difficult to flex for banking and turning; the flexing portion of the track will cause the rubber to weaken and reduce the Life of the track considerably; when the track is banked for turning and having a flat lateral portion of the track bearing on the ground, the rest of the track is lifted considerably off the ground; when the vehicle and the endless track is returned to an upright position there is no support for the track and it will free fall back to the ground possibly causing a control problem. In the present invention the endless drive track has a caved profile similar to a wide elongated dirt bike tire and a portion of the track will always have contact with the ground allowing it to ease in and out of banked positions for taming as would a dirt bike.
Summary of the invention:
The present invention provides a novel form of track conversion kit that is adaptable to most makes and models of dirt bikes currently on the market. Comprising, a frame having a lateral front member and two parallel longitudinal side members. Said lateral front member has two fixed coupling arms with sleeves. Said sleeves having bearings or bushings for pivotally mounting said frame to the chasis of a dirt bike by means of the dirt bike swing arm shaft. The front portion of said frame supports a rotatably mounted counter shaft supported by bearing blocks mounted to said parallel longitudinal side members. Said bearing blocks are mounted to said longitudinal side members by threaded bolts and locknuts through holes in said longitudinal side members, and by elongated mounting holes in said bearing blocks. Said bearing blocks are adjustable by adjusting bolts and brackets fixed to said frame and said bearing blocks for adjusting the tension on a chain between the dirt bike engine sprocket and a driven sprocket on a counter shaft. Said counter shaft accommodates a driven and a drive sprocket and a brake disc. Said driven sprocket on said counter shaft is driven by the dirt bike engine drive sprocket and a first drive chain. Said drive sprocket on said counter shaft and a second drive chain drives a driven sprocket on an endless drive track drive shaft. Said endless drive track drive shaft accommodates a drive sprocket common to conventional snowmobiles for propelling said endless drive track. Said drive shaft and said endless drive track drive sprocket for propelling said endless drive track is mounted to said longitudinal side members by bearing blocks supported by threaded bolts and locknuts through holes in said longitudinal side members, and elongated mounting holes in said bearing blocks. Said endless drive track resembles a wide elongated dirt bike tire. Said endless drive track has a curved outer profile with a low centre of gravity having tread blocks and tread sections for increased traction, and having an inner flat surtace with a drive means thereon. Said curved outer profile provides a leaning angle equivalent to a dirtbike tire and it can be used on all types of terrain including snow. Said endless drive trek drive sprocket is centrally located on said endless drive track drive shaft and is secured by a keyway and a key having a collar with a set screw. A left and right support wheel is fixedly mounted on said endless drive track drive shaft for supporting the outer edges of said endless drive track. A left and right idler wheel is rotatably mounted to a stationary secondary suspension shaft supported by the rear section of said longitudinal side members by holes and threaded bolts into threaded holes in the ends of said shaft. A
shock absorber with its top end connected to a cluster bracket is supported by said stationary secondary suspension shaft. Said shock absorber bottom end is connected to a stationary second shaft supported by the wheel rails. Said wheel rails are supported by swing arms in the front supported by a first stationary suspension shaft and by said shock absorber at the rear supported by a stationary second wheel rail support shaft providing said endless drive trade with a firm contact on the surface it is being driven over. The rear portion of said wheel rails support a guide wheel for guiding the back end of the endless drive track for proper alignment with said endless drive track sprocket. A series of idler wheels are spaced at intervals longitudinally along said wheel rails to facilitate the rotation of the lower run of the endless drive track bearing on the ground with minimal friction. A spring loaded adjustment rod for adjusting said shock absorber to increase or decrease its tension for different riding conditions has its top end attached to said cluster bracket supported by said stationary second suspension support shaft.and by the longitudinal side members, and to a stationary third wheel rail shaft supported by said wheel rails. Said spring loaded adjusting rod is easily adjusted by hand without having to use tools.
Said endless drive track is held in place by the endless drive track drive lugs and drive sprocket in the front, supported by the endless drive track drive shaft and bearing blocks supported by said longitudinal side members; by the rotatably mounted idler wheels supported by said secondary stationary suspension shaft supported by the rear portion of said longitudinal side members, and by the guide wheel and idler wheels supported by the forth wheel rails shaft, and by the plurality of smaller idler wheels supported at intervals from the front to the rear portion of said wheel rails. Said shock absorber presses the lower run of said endless drive track firmly on the ground for increased traction.
Said second drive chain and said endless drive track are adjusted by adjusting bolts having a bracket fixed to the rear portion of said wheel rails, and a wllar supported by the ends of said fourth wheel rail shaft supported by the rear portion of said wheel rails. Said adjusting bolts will adjust the tension independently on both said second drive chain and said endless drive track. For adjusting said second drive chain the bolts supporting said drive shaft bearing blocks to said longitudinal side frame members will be untightened and the adjustment will be done by said endless drive track adjusting bolts at the rear portion of said wheel rails. When the proper tension on said second chain is set said bearing block boits will be tightened, securing the tension on said second drive chain. Then said endless drive track will be adjusted for the proper tension and secured by the endless drive track adjusting bolts and locknuts at the ends of forth stationary shaft.
A ski mechanism interchangeable with the dirt bike wheel for snow use comprising a frame having a u-shape bracket at its lower end and a cross member at its top end supported by vertical support brackets integral of u-shape bracket and said top end cross member. A tubular post is centrally fixed to said u-shape bracket and to said top cross member.
A bushing is inserted into the top end of said tubular post for accommodating a vertical shaft. Said vertical shaft has its top end supported by a spline in the centre of a two piece bolt on bracket. Said bolt on bracket bolts to the upper portion of the front fork assembly of the dirt bike. The bottom end of said vertical shaft is supported by the top end of said tubular post and bushing. Said vertical shaft fits into said tubular post and said bushing with a close tolerance, permitting said vertical shaft to move up and down inside said tubular post in accordance to the up and down movement of the front fork shock assembly. Said ski mechanism is supported to the dirt bike front fork assembly by bolts through the existing holes used for mounting the dirt bike wheel, and by said bolt on bracket.
A ski having a longitudinal centre curve with a guide bar and two longitudinal side curves having anti skid bars. Said side curves have top flared edges for preventing lateral slippage and for increasing the controllability of the ski when the dirt bike is performing its maximum maneuvers. Said ski is detachably mounted to said ski mechanism by a shaft with threaded ends and locknuts.
Briet Description Of The Drawings Fig.1 is a side view of the track conversion kit coupled to the rear section of a dirt bike chasis in the preferred embodiment of the present invention.
Fig. 2 is a side view of another embodiment of the track conversion kit.
Fig. 3 is a plan view of Fig. 1 and Fig. 2.
Fig. 4 is an isometric view of the endless drive track.
Fig. 5 is a top view of a cross section area of the endless drive track meshing with the drive track sprocket and support wheels in the front.
Fig. 6 is a top view of a aoss section area of the endless drive track meshing with the guide wheel and idler wheels at the back.
Fig. 7 is an isometric view of the track conversion kit frame.showing torsion bars and brackets and coupling arm spacers.
Fig. 8 is an enlarged sectional view of the counter shaft and bearing blocks with an adjusting mechanism.
Fig. 9 is an enlarged exploded view of the shock absorber suspension mechanism.
Fig.10 is an enlarged view of the w~el rail and the endless drive track adjusting mechanism.
Fig.11 is a front view of a ski device for interchanging with a dirt bike wheel for snow use.
Specifications:
Reference is made firstly to Fig.1 which illustrates a track conversion kit having a frame 2 with a front lateral member and left and right longitudinal side members.
Said front lateral member supports coupling arms 4 and sleeves 6 for coupling to the rear section of a dirt bike chasis 8 and a shock absorber 9. Said frame 2 has a vertical support bracket 2a, torsion bars 2b, torsion bar brackets 2c, coupling shaft 2d, coupling spacers 2e, and a iwo piece torsion bar support bracket 2f and a shock absorber bracket 9a as shown in Fig. 7. A
cowling 3 for covering the top portion of a track and track mechanism.is shown in Fig. 1.
Said cowling 3 will protect the rider from snow and other debris that would be scattered from said drive track. Said cowling 3 is designed to have an aerodynamic airflow to reduce drag and to help keep the cowling free from snow and other debris when the vehicle is in motion. Dirt bike chasis 8 has an engine 10 having a drive sprocket 12 and a first drive chain 14. Said first drive chain 14 drives a driven sprocket 16 on counter shaft 18 as shown in Fig. 3. Said counter shaft 18 has a long keyway 12 having keys 13 and collars 13a with set srews for securing a driven sprocket 16, a drive sprocket 20 and a brake disc 25 on counter shaft 18. Said counter shaft long keyway 12 will allow driven sprocket 16 to be adjusted laterally for aligning with different makes and models of dirt bikes drive sprockets. Said brake disc caliper is supported by a bracket 21 supported by said frame 2. An adjusting mechanism for adjusting the tension on said first drive chain 14 is shown in an enlarged view in Fig. 8. Said bearing blocks 22 has an integral support bracket 22a for accommodating an adjusting bolt 22d supported by bracket 22b fixdely supported by said frame 2. Said bracket 22b has retaining washers 22c for adjusting said bearing blocks 22 as shown in Fig. 8 Drive sprocket 20 on counter shaft 18 drives a driven sprocket 28 on drive shaft 32 by a second drive chain 19 and said drive shaft 32 as shown in Fig.
3. An endless drive track drive sprocket 30 is fixedly supported on said drive shaft 32 for propelling said endless drive track 35 as shown in Fig.1. A sectional isometric view of said endless drive track having an outer curved profile with moulded tread block and tread sections is shown in Fig. 4.
A top view of a cross sectional area of said endless drive track 35 having drive lugs 29 meshing with said endless drive track drive sprocket 30 and support wheels 31 supported by endless drive track drive shaft 32 supported by the longitudinal side members of frame 2 is shown in Fig.
5. A top view of a cross section area of said endless drive track having drive lugs 29 meshing with guide wheel 50 and idler wheels 48 supported by said wheel rails fourth shaft 68 and wheel rails 42 is shown in Fig. 6. As shown in Fig.3 a stationary front support suspension shaft 36 is supported by said longitudinal side members of frame 2 by bolt holes and threaded bolts 47 into threaded holes in the ends of said shaft 36, said wheel rails 42 and swing arms 40 can be adjusted laterally to accommodate a wider endless drive tack for increased flotation. As shown in Fig 1 and f=ig. 3 swing arms 40 are constructed from round or square tubing having cylindrical sleeves 42 with bushings or bearings at the top and bottom ends to be pivotally mounted on stationary front support suspension shaft 36 and wheel rails first stationary shaft 34 as shown in Fig. 3. Said shaft 36 accommodates spacers 43 for eliminating any lateral movement of said swing arms 40 on said shaft 36. Referring to Ftgs.1, 2, and 3 swing arms 40 guide the front portion of wheel rails 42 for the proper alignment of a plurality of idler wheels 44 to the longitudinal axis of said endless drive track 35. The configuration of swing arms 40 will push wheel rails 42 backward with any movement of said shock absorber keeping the endless drive track 35 firmly in place against the endless drive track drive sprocket 30, wheel rails idler wheels 44 and 48, and guide wheel 50. A stationary rear support suspension shaft 52 is supported by said longitudinal side members of frame 2 by bolt holes and threaded bolts 4T
into threaded holes in the ends of said shaft 52 as shown in Fig. 3. Idler wheels 3T are rotatably supported by said stationary rear suspension shaft 52 and held in position on rear suspension shaft 52 by spacers 54 as shown in Fig. 3. Spacers 43, 54 and 67 and swing arm sleeve 33 are showing a cut away view for showing stationary front support suspension shaft 34, stationary rear support suspension shaft 52, wheel rails first shaft 34 and wheel rails fourth shaft 68. The top end of said shock absorber 58 is supported by the centre portion of said stationary rear suspension shaft 52 by a cluster bracket 58. Said Duster bracket, said shock absorber, a suspension adjusting rod and said cluster bracket stabilizer bar are shown in an exploded view in Fig. 9.
Said cluster bracket stabilizer bar 59 is pivotally mounted to said cluster bracket 58 and to said stationary first suspension shaft 36 shown in Fig.3. The bottom end of said shock absorber 56 is supported by a second stationary wheel rail shaft 60 supported by wheel rails 42, the upper end of suspension adjusting rod 62 is supported by said cluster bracket 58 and the bottom end is supported by a stationary third wheel rail shaft 66, supported by wheel rails 42 as shown in Fig. 3. Adjusting rod 62 has an adjusting spring 64 for adjusting the tension on said shock absorber 56 to suit different riding conditions as shown in Fig.1. Idler wheels 48 and said endless track guide wheel 50 are rotatably supported by a fourth wheel rail shaft 68 having an adjustable mechanism supported by the rear portion of wheel rails 42 as shown in Fig. 3 and in an enlarged view in Fig.10. The adjustable mechanism as shown in Fig.10 has elongated slots T1 at the rear portion of said wheel rails 42 for adjusting said fourth wheel rail shaft 68 for the appropriate tension on said endless drive track 35. Said fourth wheel rail shaft 68 is adjusted by threaded adjusting bolts TO supported by brackets T2 fixedly mounted to the rear portion of wheel rails 42. An opening 78 in the rear portion of wheel rails 42 provides space for using a wrench for adjusting said adjusting bolts T0. The tips of adjusting bolts 70 are rotatably connected to the ends of said fourth wheel rail shaft 68 by collars 74 for the adjustable movement of said wheel rail shaft 68. When said wheel rail shaft 68 is adjusted it will be locked in position by locknuts 69 at the ends of said shaft 68 and by locknuts 75 on said adjusting bolts as shown in Fig.10 and Fig. 3. As shown in Fig. 3 the adjusting mechanism for adjusting said endless drive track 35 is also used for adjusting the tension on said drive chain 34 by untighteing the bolts holding said bearing blocks 22 in place. The elongated bolt holes in said bearing blocks 22 will allow said bearing blocks and the drive shaft mechanism to be adjusted to the appropriate tension on second drive chain 34. When the adjustment is made to said drive chain 34 said bearing blocks 22 are secured by said threaded bolts 47 and locknuts.
When this procedure is completed said endless drive track 35 will be readjusted to the proper tension.
As shown in Fig.11 a ski mechanism for adapting to the front end of dirt bike chasis 8 has a cross section area of a ski T8 supported by a shaft 80 to a u-shape bracket 82. Said u-shape bracket 82 is supported by vertical support brackets 84 integral of said u-shape bracket 82 and a top end cross member 86. A tubular post 88 is fixed to said u-shape bracket 82 and to said top end cross member 86. Said top end cross member 86 has an opening for supporting the top end of tubular post 88. Said tubular post 88 is centrally located on said u-shape bracket 82 and to said top end aoss member 86. A bushing 90 is inserted into the top end of said tubular post 88. A vertical shaft 92 has its top end supported by a spline 93 and a roil pin 94 in the centre of a two piece bracket 95. Said two piece txacket 95 has holes 96 at its outer ends for attaching to the upper portion of said dirt bike front fork assembly 97.
Said two piece bracket 95 is held together by threaded borts and threaded holes 91 in said bracket 95. The bottom end of said vertical shaft 92 is supported by the top end of said tubular post 88 and bushing 90.
Vertical shaft 92 fits into said tubular post 88 and said bushing 90 with a close tolerance permitting said vertical shaft 92 to move up and down inside said tubular post 88 in accordance to the up and down movement of said front fork shock assembly. The ski support assembly is supported by the dirt bike front fork assembly 97 and by said two piece bracket 95 having support holes 96 and by bolts 98 through the existing holes used for mounting the dirt bike wheel. Ski T8 has a centre curve 100 and two side curves 102 and 104. Said centre curve 100 has a guide bar 106 and said side curves 102 and 104 have anti-skid bars 108 and 110, and top side flared edges 112 and 114 for preventing lateral slippage and increasing controllability of said ski when the dirt bike is extremely banked in a tum. A multiple representation of the embodiment disclosed as shown in Flg. 2 is a track conversion kit adaptable to dirt bikes with wheel rails 42 having a longitudinal camber 43 along the longitudinal bottom edge of said wheel rails 42. A
plurality of said idler wheels 44 supported by said wheel rails 42 reduces friction on the lower run of said endless drive track 35 as it rotates past said wheel rails 42. The lower run of said endless drive track 35 will form the shape of said longitudinal camber 43 of said wheel rails 42 as 'tt rotates past said longitudinal camber of said wheel rails 42. Said longitudinal camber on said wheel rails 42 and said endless drive track 35 will have a smaller area bearing on the ground than said track in Fig.1 would have. The reduced area of the track bearing on the ground will allow the track to have a greater turning radius than the track in Fig.1 would have,.improving its maneuverability considerably. This type of endless drive track works best on hard pack surtaces such as firm ground, hardpack snow and ice. When operating on soft ground or in deep snow the track will function similar to the track in Fig. 1 with the exception of the camber portion of the track in Fig. 2 will help compact the snow increasing the track flotation. An alternative adjusting mechanism for said shock absorber 56 has an adjusting rod 57 having its top end connected to said Duster braGcet 58 and a threaded bottom end connected to a support bracket 59. Said support bracket 59 is supported by said wheel rail third stationary shaft_ Said support bracket 59 has an opening large enough to accommodate a wrench for adjusting the tension on said adjusting rod for different riding conditions.
A top view of a cross sectional area of said endless drive track 35 having drive lugs 29 meshing with said endless drive track drive sprocket 30 and support wheels 31 supported by endless drive track drive shaft 32 supported by the longitudinal side members of frame 2 is shown in Fig.
5. A top view of a cross section area of said endless drive track having drive lugs 29 meshing with guide wheel 50 and idler wheels 48 supported by said wheel rails fourth shaft 68 and wheel rails 42 is shown in Fig. 6. As shown in Fig.3 a stationary front support suspension shaft 36 is supported by said longitudinal side members of frame 2 by bolt holes and threaded bolts 47 into threaded holes in the ends of said shaft 36, said wheel rails 42 and swing arms 40 can be adjusted laterally to accommodate a wider endless drive tack for increased flotation. As shown in Fig 1 and f=ig. 3 swing arms 40 are constructed from round or square tubing having cylindrical sleeves 42 with bushings or bearings at the top and bottom ends to be pivotally mounted on stationary front support suspension shaft 36 and wheel rails first stationary shaft 34 as shown in Fig. 3. Said shaft 36 accommodates spacers 43 for eliminating any lateral movement of said swing arms 40 on said shaft 36. Referring to Ftgs.1, 2, and 3 swing arms 40 guide the front portion of wheel rails 42 for the proper alignment of a plurality of idler wheels 44 to the longitudinal axis of said endless drive track 35. The configuration of swing arms 40 will push wheel rails 42 backward with any movement of said shock absorber keeping the endless drive track 35 firmly in place against the endless drive track drive sprocket 30, wheel rails idler wheels 44 and 48, and guide wheel 50. A stationary rear support suspension shaft 52 is supported by said longitudinal side members of frame 2 by bolt holes and threaded bolts 4T
into threaded holes in the ends of said shaft 52 as shown in Fig. 3. Idler wheels 3T are rotatably supported by said stationary rear suspension shaft 52 and held in position on rear suspension shaft 52 by spacers 54 as shown in Fig. 3. Spacers 43, 54 and 67 and swing arm sleeve 33 are showing a cut away view for showing stationary front support suspension shaft 34, stationary rear support suspension shaft 52, wheel rails first shaft 34 and wheel rails fourth shaft 68. The top end of said shock absorber 58 is supported by the centre portion of said stationary rear suspension shaft 52 by a cluster bracket 58. Said Duster bracket, said shock absorber, a suspension adjusting rod and said cluster bracket stabilizer bar are shown in an exploded view in Fig. 9.
Said cluster bracket stabilizer bar 59 is pivotally mounted to said cluster bracket 58 and to said stationary first suspension shaft 36 shown in Fig.3. The bottom end of said shock absorber 56 is supported by a second stationary wheel rail shaft 60 supported by wheel rails 42, the upper end of suspension adjusting rod 62 is supported by said cluster bracket 58 and the bottom end is supported by a stationary third wheel rail shaft 66, supported by wheel rails 42 as shown in Fig. 3. Adjusting rod 62 has an adjusting spring 64 for adjusting the tension on said shock absorber 56 to suit different riding conditions as shown in Fig.1. Idler wheels 48 and said endless track guide wheel 50 are rotatably supported by a fourth wheel rail shaft 68 having an adjustable mechanism supported by the rear portion of wheel rails 42 as shown in Fig. 3 and in an enlarged view in Fig.10. The adjustable mechanism as shown in Fig.10 has elongated slots T1 at the rear portion of said wheel rails 42 for adjusting said fourth wheel rail shaft 68 for the appropriate tension on said endless drive track 35. Said fourth wheel rail shaft 68 is adjusted by threaded adjusting bolts TO supported by brackets T2 fixedly mounted to the rear portion of wheel rails 42. An opening 78 in the rear portion of wheel rails 42 provides space for using a wrench for adjusting said adjusting bolts T0. The tips of adjusting bolts 70 are rotatably connected to the ends of said fourth wheel rail shaft 68 by collars 74 for the adjustable movement of said wheel rail shaft 68. When said wheel rail shaft 68 is adjusted it will be locked in position by locknuts 69 at the ends of said shaft 68 and by locknuts 75 on said adjusting bolts as shown in Fig.10 and Fig. 3. As shown in Fig. 3 the adjusting mechanism for adjusting said endless drive track 35 is also used for adjusting the tension on said drive chain 34 by untighteing the bolts holding said bearing blocks 22 in place. The elongated bolt holes in said bearing blocks 22 will allow said bearing blocks and the drive shaft mechanism to be adjusted to the appropriate tension on second drive chain 34. When the adjustment is made to said drive chain 34 said bearing blocks 22 are secured by said threaded bolts 47 and locknuts.
When this procedure is completed said endless drive track 35 will be readjusted to the proper tension.
As shown in Fig.11 a ski mechanism for adapting to the front end of dirt bike chasis 8 has a cross section area of a ski T8 supported by a shaft 80 to a u-shape bracket 82. Said u-shape bracket 82 is supported by vertical support brackets 84 integral of said u-shape bracket 82 and a top end cross member 86. A tubular post 88 is fixed to said u-shape bracket 82 and to said top end cross member 86. Said top end cross member 86 has an opening for supporting the top end of tubular post 88. Said tubular post 88 is centrally located on said u-shape bracket 82 and to said top end aoss member 86. A bushing 90 is inserted into the top end of said tubular post 88. A vertical shaft 92 has its top end supported by a spline 93 and a roil pin 94 in the centre of a two piece bracket 95. Said two piece txacket 95 has holes 96 at its outer ends for attaching to the upper portion of said dirt bike front fork assembly 97.
Said two piece bracket 95 is held together by threaded borts and threaded holes 91 in said bracket 95. The bottom end of said vertical shaft 92 is supported by the top end of said tubular post 88 and bushing 90.
Vertical shaft 92 fits into said tubular post 88 and said bushing 90 with a close tolerance permitting said vertical shaft 92 to move up and down inside said tubular post 88 in accordance to the up and down movement of said front fork shock assembly. The ski support assembly is supported by the dirt bike front fork assembly 97 and by said two piece bracket 95 having support holes 96 and by bolts 98 through the existing holes used for mounting the dirt bike wheel. Ski T8 has a centre curve 100 and two side curves 102 and 104. Said centre curve 100 has a guide bar 106 and said side curves 102 and 104 have anti-skid bars 108 and 110, and top side flared edges 112 and 114 for preventing lateral slippage and increasing controllability of said ski when the dirt bike is extremely banked in a tum. A multiple representation of the embodiment disclosed as shown in Flg. 2 is a track conversion kit adaptable to dirt bikes with wheel rails 42 having a longitudinal camber 43 along the longitudinal bottom edge of said wheel rails 42. A
plurality of said idler wheels 44 supported by said wheel rails 42 reduces friction on the lower run of said endless drive track 35 as it rotates past said wheel rails 42. The lower run of said endless drive track 35 will form the shape of said longitudinal camber 43 of said wheel rails 42 as 'tt rotates past said longitudinal camber of said wheel rails 42. Said longitudinal camber on said wheel rails 42 and said endless drive track 35 will have a smaller area bearing on the ground than said track in Fig.1 would have. The reduced area of the track bearing on the ground will allow the track to have a greater turning radius than the track in Fig.1 would have,.improving its maneuverability considerably. This type of endless drive track works best on hard pack surtaces such as firm ground, hardpack snow and ice. When operating on soft ground or in deep snow the track will function similar to the track in Fig. 1 with the exception of the camber portion of the track in Fig. 2 will help compact the snow increasing the track flotation. An alternative adjusting mechanism for said shock absorber 56 has an adjusting rod 57 having its top end connected to said Duster braGcet 58 and a threaded bottom end connected to a support bracket 59. Said support bracket 59 is supported by said wheel rail third stationary shaft_ Said support bracket 59 has an opening large enough to accommodate a wrench for adjusting the tension on said adjusting rod for different riding conditions.
Claims (9)
1. A track conversion kit adaptable to dirt bikes comprising: a frame having a lateral front member and left and right longitudinal side members, a left and right coupling arm fixedly supported by said lateral front member; said left and right coupling arms have sleeves fixedly supported at the outer ends for coupling said frame to a dirt bike chasis;
said coupling sleeves having bearings or bushings to match the diameter of the shaft of said dirt bike chasis; said longitudinal side members support a counter shaft, an endless track drive sprocket drive shaft, a front suspension support shaft, and a rear suspension support shaft; said counter shaft supports a drive sprocket, a driven sprocket and a brake disc; said brake disc has a brake caliper supported by a bracket to said longitudinal side members; said counter shaft is supported by a left and right bearing block, said bearing blocks are supported by said left and right longitudinal side members by support holes for accommodating threaded bolts and locknuts;
said bearing blocks have elongated mounting holes and adjusting bolts for adjusting the tension on said drive chain from said engine drive sprocket; said adjusting bolts are supported by a retaining bracket fixedly supported by said left and right longitudinal side members; a nonthreaded portion of said adjusting bolts are rotatably mounted to said retaining brackets by retaining washers; said adjusting bolts are secured to said bearing blocks by a support bracket fixedly supported to said bearing blocks; said support brackets have a threaded hole to accommodate the threaded portion of said adjusting bolts for adjusting said bearing blocks for adjusting the tension of said engine drive chain; said counter shaft has a long keyway for adjusting said driven sprocket on said counter shaft laterally for aligning with an engine drive sprocket for different makes and models of dirt bikes.
said coupling sleeves having bearings or bushings to match the diameter of the shaft of said dirt bike chasis; said longitudinal side members support a counter shaft, an endless track drive sprocket drive shaft, a front suspension support shaft, and a rear suspension support shaft; said counter shaft supports a drive sprocket, a driven sprocket and a brake disc; said brake disc has a brake caliper supported by a bracket to said longitudinal side members; said counter shaft is supported by a left and right bearing block, said bearing blocks are supported by said left and right longitudinal side members by support holes for accommodating threaded bolts and locknuts;
said bearing blocks have elongated mounting holes and adjusting bolts for adjusting the tension on said drive chain from said engine drive sprocket; said adjusting bolts are supported by a retaining bracket fixedly supported by said left and right longitudinal side members; a nonthreaded portion of said adjusting bolts are rotatably mounted to said retaining brackets by retaining washers; said adjusting bolts are secured to said bearing blocks by a support bracket fixedly supported to said bearing blocks; said support brackets have a threaded hole to accommodate the threaded portion of said adjusting bolts for adjusting said bearing blocks for adjusting the tension of said engine drive chain; said counter shaft has a long keyway for adjusting said driven sprocket on said counter shaft laterally for aligning with an engine drive sprocket for different makes and models of dirt bikes.
2. A track conversion kit adaptable to dirt bikes as claimed in claim 1;
wherein said track drive shaft is supported by bearing blocks; said bearing blocks are supported by said left and right longitudinal side members, said left and right longitudinal side members have support holes for accommodating threaded bolts and locknuts for supporting said bearing blocks;
said bearing blocks have elongated mounting holes for adjusting the tension on said drive chain between said counter shaft drive sprocket and said endless track drive shaft driven sprocket; said drive shaft driven sprocket and chain is adjusted by the track adjusting bolts at the rear portion of the wheel rails; a stationary front suspension support shaft is fixedly supported by said left and right longitudinal side members; said left and right longitudinal side members have support holes to accommodate threaded bolts for the threaded ends of said stationary front suspension support shaft; a stationary rear suspension support shaft is fixedly supported by said left and right longitudinal side members; said left and right longitudinal side members have support holes to accommodate threaded bolts for the threaded ends of said stationary rear suspension support shaft;
wherein said track drive shaft is supported by bearing blocks; said bearing blocks are supported by said left and right longitudinal side members, said left and right longitudinal side members have support holes for accommodating threaded bolts and locknuts for supporting said bearing blocks;
said bearing blocks have elongated mounting holes for adjusting the tension on said drive chain between said counter shaft drive sprocket and said endless track drive shaft driven sprocket; said drive shaft driven sprocket and chain is adjusted by the track adjusting bolts at the rear portion of the wheel rails; a stationary front suspension support shaft is fixedly supported by said left and right longitudinal side members; said left and right longitudinal side members have support holes to accommodate threaded bolts for the threaded ends of said stationary front suspension support shaft; a stationary rear suspension support shaft is fixedly supported by said left and right longitudinal side members; said left and right longitudinal side members have support holes to accommodate threaded bolts for the threaded ends of said stationary rear suspension support shaft;
3. A track conversion kit adaptable to dirt bikes as claimed in claim 1;
wherein the top portion of said suspension swing arms is pivotally supported by said stationary front suspension support shaft; said top portion of said suspension swing arms have sleeves fixedly supported to said top end of said swing arms; said sleeves have bushings or bearings for pivotally supporting said top portion of said swing arms to said stationary front suspension support shaft;
the innermost ends of said sleeves are laterally supported by a centrally located stabilizer bar support sleeve and the outermost ends of said sleeves are laterally supported by spacers between said outermost sleeves and said longitudinal side members; said bottom portion of said swing arms is supported by said wheel rails stationary first shaft; a shock absorber having its top end supported by a cluster bracket is centrally located and supported by said stationary rear suspension support shaft; idler wheels are rotatably mounted on said stationary rear suspension support shaft in alignment with the plurality of idler wheels supported by said wheel rails;
spacers are used on said stationary rear suspension support shaft between said cluster bracket, said idler wheels and said longitudinal side members to keep said cluster bracket centrally located on said stationary rear suspension support shaft, and said idler wheels aligned with said plurality of idlers wheels supported by said wheel rails; said shock absorber bottom end is centrally located and supported by a bracket supported by said wheel rails stationary second shaft;
said cluster bracket supports the top end of said shock absorber, the top end of said suspension adjusting rod and said cluster bracket stabilizer bar; said cluster bracket stabilizer bar first end is supported by said cluster bracket and said stationary rear suspension support shaft; said stabilizer bar second end is pivotally supported by a sleeve having a bushing or bearing by said stationary front suspension support shaft; said suspension adjusting rod is pivotally supported by said cluster bracket supported by said stationary rear suspension support shaft and said stationary third wheel rail shaft; said suspension adjusting rod has a telescopic portion at its lower end having a threaded section for an adjusting spring, said adjusting spring is held in place by top and bottom retaining washers, said spring is rotated for adjusting the tension on said adjusting rod and said shock absorber;
wherein the top portion of said suspension swing arms is pivotally supported by said stationary front suspension support shaft; said top portion of said suspension swing arms have sleeves fixedly supported to said top end of said swing arms; said sleeves have bushings or bearings for pivotally supporting said top portion of said swing arms to said stationary front suspension support shaft;
the innermost ends of said sleeves are laterally supported by a centrally located stabilizer bar support sleeve and the outermost ends of said sleeves are laterally supported by spacers between said outermost sleeves and said longitudinal side members; said bottom portion of said swing arms is supported by said wheel rails stationary first shaft; a shock absorber having its top end supported by a cluster bracket is centrally located and supported by said stationary rear suspension support shaft; idler wheels are rotatably mounted on said stationary rear suspension support shaft in alignment with the plurality of idler wheels supported by said wheel rails;
spacers are used on said stationary rear suspension support shaft between said cluster bracket, said idler wheels and said longitudinal side members to keep said cluster bracket centrally located on said stationary rear suspension support shaft, and said idler wheels aligned with said plurality of idlers wheels supported by said wheel rails; said shock absorber bottom end is centrally located and supported by a bracket supported by said wheel rails stationary second shaft;
said cluster bracket supports the top end of said shock absorber, the top end of said suspension adjusting rod and said cluster bracket stabilizer bar; said cluster bracket stabilizer bar first end is supported by said cluster bracket and said stationary rear suspension support shaft; said stabilizer bar second end is pivotally supported by a sleeve having a bushing or bearing by said stationary front suspension support shaft; said suspension adjusting rod is pivotally supported by said cluster bracket supported by said stationary rear suspension support shaft and said stationary third wheel rail shaft; said suspension adjusting rod has a telescopic portion at its lower end having a threaded section for an adjusting spring, said adjusting spring is held in place by top and bottom retaining washers, said spring is rotated for adjusting the tension on said adjusting rod and said shock absorber;
4. A track conversion kit adaptable to dirt bikes as claimed in claim 1, wherein said wheel rails are supported by said suspension swing arms, said shock absorber, and said suspension adjusting rod; said wheel rails support a plurality of idler wheels; said plurality of idler wheels have two larger idler wheels supported by a fourth wheel rail shaft supported by the rear section of said wheel rails; said larger idler wheels are rotatably mounted to the ends of said fourth wheel rail shaft and are secured by spacers between said wheel rails and locknuts at the ends of said shaft; said fourth wheel rail shaft is adjustable by adjusting bolts and threaded brackets; an endless drive track rear guide wheel is rotatably mounted to the central portion of said stationary fourth wheel rail shaft; said guide wheel is centrally held in place by spacers between said guide wheel and said wheel rails; said larger idler wheels and said endless drive track said rear guide wheel is adjustable by said adjusting bolts and threaded adjusting bolt brackets fixedly mounted to the rear section of said wheel rails; said adjusting bolts having a nonthreaded tip smaller in diameter than the diameter of said adjusting bolts are supported by small openings in the outer circumference of said collars; said collars are supported by the ends of said wheel rails fourth shaft for the adjustable movement of said wheel rails fourth shaft by said adjusting bolts; said adjusting bolts will provide the proper tension on said endless drive track;
said adjusting bolts have locknuts for locking said adjusting bolts tight against said adjusting bolt brackets to secure the tension on said endless drive track; said wheel rails and said idler wheels are pressed firmly on the lower run of said endless drive track by said suspension mechanism providing said endless drive track with a good firm contact on the surface it is travelling over.
said adjusting bolts have locknuts for locking said adjusting bolts tight against said adjusting bolt brackets to secure the tension on said endless drive track; said wheel rails and said idler wheels are pressed firmly on the lower run of said endless drive track by said suspension mechanism providing said endless drive track with a good firm contact on the surface it is travelling over.
5. A track conversion kit adaptable to dirt bikes as claimed in claim 1.
wherein said wheel rails have a camber at their bottom edge; said camber wheel rails support a plurality of idler wheels, said plurality of idler wheels have left and right larger idler wheels supported by said wheel rails fourth shaft; said larger idler wheels are rotatably mounted to the ends of said wheel rails fourth shaft; said larger idler wheels are secured to said wheel rails fourth shaft by spacers and threaded locknuts secured to the threaded ends of said wheel rails fourth shaft; said endless drive track guide wheel is rotatably mounted to the central portion of said wheel rails fourth shaft and is secured by spacers between said guide wheel and said left and right wheel rails; said left and right larger idler wheels and said endless drive track said guide wheel are adjustable by threaded adjusting bolt and threaded adjusting bolt brackets fixedly mounted to the rear section of said wheel rails; said adjusting bolts having a nonthreaded tip smatter in diameter than the diameter of said adjusting bolts supported by small openings in the outer circumference of said collars; said collars are supported by the ends of said wheel rails fourth shaft for the adjustable movement of said wheel rails fourth shaft by said adjusting bolts; said adjusting bolts have locknuts for locking said adjusting bolts tight against said adjusting bolt brackets to secure the tension on said endless drive track; said wheel rails and said idler wheels are pressed firmly on the lower run of said endless track by said suspension causing the lower run of said endless track to form a longitudinal camber on hard packed surfaces; said endless drive track with said longitudinal camber will have a shorter portion of said lower run bearing on the surface it is driven on, this camber effect will increase the maneuverability of the vehicle, reducing friction and increasing speed on softer terrains such as snow, mud and wetland areas; the longitudinal camber will help compact the terrain it is driven over increasing flotation and reducing damage to the terrain.
wherein said wheel rails have a camber at their bottom edge; said camber wheel rails support a plurality of idler wheels, said plurality of idler wheels have left and right larger idler wheels supported by said wheel rails fourth shaft; said larger idler wheels are rotatably mounted to the ends of said wheel rails fourth shaft; said larger idler wheels are secured to said wheel rails fourth shaft by spacers and threaded locknuts secured to the threaded ends of said wheel rails fourth shaft; said endless drive track guide wheel is rotatably mounted to the central portion of said wheel rails fourth shaft and is secured by spacers between said guide wheel and said left and right wheel rails; said left and right larger idler wheels and said endless drive track said guide wheel are adjustable by threaded adjusting bolt and threaded adjusting bolt brackets fixedly mounted to the rear section of said wheel rails; said adjusting bolts having a nonthreaded tip smatter in diameter than the diameter of said adjusting bolts supported by small openings in the outer circumference of said collars; said collars are supported by the ends of said wheel rails fourth shaft for the adjustable movement of said wheel rails fourth shaft by said adjusting bolts; said adjusting bolts have locknuts for locking said adjusting bolts tight against said adjusting bolt brackets to secure the tension on said endless drive track; said wheel rails and said idler wheels are pressed firmly on the lower run of said endless track by said suspension causing the lower run of said endless track to form a longitudinal camber on hard packed surfaces; said endless drive track with said longitudinal camber will have a shorter portion of said lower run bearing on the surface it is driven on, this camber effect will increase the maneuverability of the vehicle, reducing friction and increasing speed on softer terrains such as snow, mud and wetland areas; the longitudinal camber will help compact the terrain it is driven over increasing flotation and reducing damage to the terrain.
6. A track conversion kit adaptable to dirt bikes as claimed in claim 1.
wherein an endless drive track is supported by a drive track sprocket and left and right idler wheels mounted to a drive shaft rotatably mounted to bearing blocks supported by said longitudinal side members; the lower run of said endless drive track is supported by a plurality of smaller idler wheels supported by said wheel rails, said guide wheel and a larger left and right idler wheel supported by wheel rails fourth shaft; the upper run of said endless drive track is supported by rotatably mounted left and right larger idler wheels supported by said stationary rear suspension support shaft supported by said longitudinal side members; said endless drive track having lateral edges having a flat inner surface having a drive mechanism thereon; an outer surface comprising of a plurality of tread blocks equally spaced transversely along the outer surface of the track; the tread blocks have inward angles extending outward from the lateral edges of the drive track;
each of the tread blocks is moulded to the outer surface of the track; the tread blocks have a solid base extending from the outer surface of the track and the bottom of the inward angles of the tread blocks to a point where the tread blocks have a plurality of slots;
the bottom ends of the slots in the tread blocks are of equal distance from the outer surface of the track and equal distance from the bottom of the inward angles of the tread blocks; each of the slots is strategically located in the tread blocks to cause a staggered pattern with an adjacent block; the slots in each of the tread blocks divide the tread blocks into a plurality of tread sections causing a staggered pattern with an adjacent block, each tread section has its own radius, the combination of tread sections along the upper portion of each of the tread blocks will have a camber-like effect; the tread blocks inward angles extending outward from the lateral edges of the drive track increases the tread blocks camber-like effect allowing the track to have a greater angle for maneuvering while lowering the vehicles centre of gravity and increasing its stability.
wherein an endless drive track is supported by a drive track sprocket and left and right idler wheels mounted to a drive shaft rotatably mounted to bearing blocks supported by said longitudinal side members; the lower run of said endless drive track is supported by a plurality of smaller idler wheels supported by said wheel rails, said guide wheel and a larger left and right idler wheel supported by wheel rails fourth shaft; the upper run of said endless drive track is supported by rotatably mounted left and right larger idler wheels supported by said stationary rear suspension support shaft supported by said longitudinal side members; said endless drive track having lateral edges having a flat inner surface having a drive mechanism thereon; an outer surface comprising of a plurality of tread blocks equally spaced transversely along the outer surface of the track; the tread blocks have inward angles extending outward from the lateral edges of the drive track;
each of the tread blocks is moulded to the outer surface of the track; the tread blocks have a solid base extending from the outer surface of the track and the bottom of the inward angles of the tread blocks to a point where the tread blocks have a plurality of slots;
the bottom ends of the slots in the tread blocks are of equal distance from the outer surface of the track and equal distance from the bottom of the inward angles of the tread blocks; each of the slots is strategically located in the tread blocks to cause a staggered pattern with an adjacent block; the slots in each of the tread blocks divide the tread blocks into a plurality of tread sections causing a staggered pattern with an adjacent block, each tread section has its own radius, the combination of tread sections along the upper portion of each of the tread blocks will have a camber-like effect; the tread blocks inward angles extending outward from the lateral edges of the drive track increases the tread blocks camber-like effect allowing the track to have a greater angle for maneuvering while lowering the vehicles centre of gravity and increasing its stability.
7. A track conversion kit adaptable to dirt bikes as claimed in claim 1, wherein an endless drive track incorporating moulded tread blocks and tread sections will provide maximum maneuverability when used on vehicles designed to be operated with a single ski or a single wheel on the front for steering and support, and to be driven like a motorcycle; when the vehicle is resting on the ground in an upright position the tread sections near the longitudinal portion of the track will be bearing on the ground, this position of the track bearing on the ground will be used for a straight forward motion of the track; for the vehicle to perform a manoeuvre to change direction it would lean from side to side depending on the desired direction, as would a motorcycle; when this manoeuvre is performed the bearing point of the track is changed from the centre longitudinal portion of the track and tread sections to a position between the longitudinal centre line of the track and tread sections to the lateral edges of the tread blocks and tread sections depending on the radius of the turn; in performing this maneuver and other manoeuvres the bearing point of the track will always depend on the radius of two or more tread sections transversely in each of the tread blocks along the entire longitudinal outer surface of the track bearing on the ground to maintain the maximum traction with the ground and to provide good stability.
8. A track conversion kit adaptable to dirt bikes as claimed in claim 1.
wherein said frame comprises, a lateral front member, left and right longitudinal side members, a vertical support bracket at the back end of said longitudinal side members, and a left and right coupling arm fixedly supported by said lateral front member; said left and right coupling arms have a sleeve fixedly supported to the outer ends for coupling said frame to a dirt bike chasis the rear wheel and swing arms will be removed from said dirt bike chasis for coupling said frame to said dirt bike chasis; the shaft supporting said swing arms and rear wheel can be used to support said frame assembly; the bottom end of said dirt bike shock absorber will be supported by a bracket supported by said frame lateral front member; said dirt bike shock absorber will help reduce the rippling effect between said dirt bike body and said frame on rough terrains;
said coupling arm sleeves and bushings or bearings for coupling said frame to said dirt bike chasis has spacers for eliminating any free play laterally between said dirt bike chasis and engine rear mount; said spacers can be used for coupling said frame to different makes and models of dirt bikes; torsion bars can be supported by said frame lateral front member and left and right longitudinal side members by support brackets integral of said frame, said support brackets can also be bolted to said frame for easy removal if necessary; the rear portion of said torsion bars will be supported by brackets supported by left and right longitudinal side members, and by brackets supported by said lateral front member; said torsion bars are bent to fit the shape of said frame; the front portion of said torsion bars will be connected to the chasis of said dirt bike by said torsion bars support brackets supported by the bottom portion of said dirt bike chasis;
said torsion bars will provide a smoother ride over rough terrains and can be used to replace said existing shock absorber from said dirt bike chasis, especially if said shock absorber from said dirt bike chasis is difficult to couple to said frame shock absorber bracket.
wherein said frame comprises, a lateral front member, left and right longitudinal side members, a vertical support bracket at the back end of said longitudinal side members, and a left and right coupling arm fixedly supported by said lateral front member; said left and right coupling arms have a sleeve fixedly supported to the outer ends for coupling said frame to a dirt bike chasis the rear wheel and swing arms will be removed from said dirt bike chasis for coupling said frame to said dirt bike chasis; the shaft supporting said swing arms and rear wheel can be used to support said frame assembly; the bottom end of said dirt bike shock absorber will be supported by a bracket supported by said frame lateral front member; said dirt bike shock absorber will help reduce the rippling effect between said dirt bike body and said frame on rough terrains;
said coupling arm sleeves and bushings or bearings for coupling said frame to said dirt bike chasis has spacers for eliminating any free play laterally between said dirt bike chasis and engine rear mount; said spacers can be used for coupling said frame to different makes and models of dirt bikes; torsion bars can be supported by said frame lateral front member and left and right longitudinal side members by support brackets integral of said frame, said support brackets can also be bolted to said frame for easy removal if necessary; the rear portion of said torsion bars will be supported by brackets supported by left and right longitudinal side members, and by brackets supported by said lateral front member; said torsion bars are bent to fit the shape of said frame; the front portion of said torsion bars will be connected to the chasis of said dirt bike by said torsion bars support brackets supported by the bottom portion of said dirt bike chasis;
said torsion bars will provide a smoother ride over rough terrains and can be used to replace said existing shock absorber from said dirt bike chasis, especially if said shock absorber from said dirt bike chasis is difficult to couple to said frame shock absorber bracket.
9. A track conversion kit adaptable to dirt bikes as claimed in claim 1.
wherein said dirt bike wheel can be replaced with a ski and ski support for riding on snow; said ski support has a u-shape bracket at its bottom end; said u-shape bracket has left and right vertical side brackets and a top end cross member; said u-shape bracket, said left and right vertical support brackets and said top end cross member are integral; a tubular post is integral of said u-shape bracket and said top end cross member; said top end cross member has an opening for supporting the top end of said tubular post; said tubular post is centrally located on said u-shape bracket and said top end cross member, said tubular post has a bushing inserted in the top portion for receiving a vertical shaft; said vertical shaft is supported by a spline and a roll pin in the centre portion of a two-piece bracket for bolting to the upper portion of the front fork; said vertical shaft fits into said tubular post and said bushing with a close tolerance permitting said vertical shaft to move up and down in accordance with the up and down movement of the front fork shock assembly; said ski support assembly is supported to said dirt bike front fork by bolts through the existing holes used for mounting the dirt bike wheel and by holes in said left and right vertical support brackets, and by said two piece bracket bolted to the upper portion of said front fork;
said ski is supported to said ski u-shape bracket by said ski integral support bracket by a shaft having threaded ends for supporting locknuts; said ski has a curved bottom keel and left and right curved side sections, said left and right curved side sections have flared edges for preventing lateral skidding of the ski when said dirt bike is extremely banked in a turn; said curved keel has a guide bar and said curved side sections have two anti-skid bars evenly located between said guide bar and said flared edges of said ski; when said ski is driven over surfaces such as hard pack snow or ice in a straight forward motion the centre portion of the ski and said guide bar will be bearing on the hard pack surface reducing ski friction considerably; when the vehicle and said ski is banked for turning said guide bar, said anti-skid bars, and said flared edges will prevent said ski from lateral slippage providing the vehicle with good maneuverability in different turning radii; when said ski is driven through deep snow it will compact the snow and still have traction preventing said ski from lateral slipage when the vehicle is extremely banked for turning.
wherein said dirt bike wheel can be replaced with a ski and ski support for riding on snow; said ski support has a u-shape bracket at its bottom end; said u-shape bracket has left and right vertical side brackets and a top end cross member; said u-shape bracket, said left and right vertical support brackets and said top end cross member are integral; a tubular post is integral of said u-shape bracket and said top end cross member; said top end cross member has an opening for supporting the top end of said tubular post; said tubular post is centrally located on said u-shape bracket and said top end cross member, said tubular post has a bushing inserted in the top portion for receiving a vertical shaft; said vertical shaft is supported by a spline and a roll pin in the centre portion of a two-piece bracket for bolting to the upper portion of the front fork; said vertical shaft fits into said tubular post and said bushing with a close tolerance permitting said vertical shaft to move up and down in accordance with the up and down movement of the front fork shock assembly; said ski support assembly is supported to said dirt bike front fork by bolts through the existing holes used for mounting the dirt bike wheel and by holes in said left and right vertical support brackets, and by said two piece bracket bolted to the upper portion of said front fork;
said ski is supported to said ski u-shape bracket by said ski integral support bracket by a shaft having threaded ends for supporting locknuts; said ski has a curved bottom keel and left and right curved side sections, said left and right curved side sections have flared edges for preventing lateral skidding of the ski when said dirt bike is extremely banked in a turn; said curved keel has a guide bar and said curved side sections have two anti-skid bars evenly located between said guide bar and said flared edges of said ski; when said ski is driven over surfaces such as hard pack snow or ice in a straight forward motion the centre portion of the ski and said guide bar will be bearing on the hard pack surface reducing ski friction considerably; when the vehicle and said ski is banked for turning said guide bar, said anti-skid bars, and said flared edges will prevent said ski from lateral slippage providing the vehicle with good maneuverability in different turning radii; when said ski is driven through deep snow it will compact the snow and still have traction preventing said ski from lateral slipage when the vehicle is extremely banked for turning.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/722,833 | 2000-11-27 | ||
| US09/722,833 US6406106B1 (en) | 1998-11-05 | 2000-11-27 | Endless drive track with moulded tread blocks and tread sections |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2356126A1 true CA2356126A1 (en) | 2002-05-27 |
Family
ID=24903575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2356126 Abandoned CA2356126A1 (en) | 2000-11-27 | 2001-08-01 | Track conversion kit for dirt bikes |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2356126A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9809264B1 (en) | 2015-07-20 | 2017-11-07 | The United States Of America, As Represented By The Secretary Of The Navy | Track kit for two wheeled balancing ground vehicle |
| CN113958261A (en) * | 2021-09-27 | 2022-01-21 | 南通大学 | Self-adaptive centering device and method for crawler of engineering drilling machine |
-
2001
- 2001-08-01 CA CA 2356126 patent/CA2356126A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9809264B1 (en) | 2015-07-20 | 2017-11-07 | The United States Of America, As Represented By The Secretary Of The Navy | Track kit for two wheeled balancing ground vehicle |
| CN113958261A (en) * | 2021-09-27 | 2022-01-21 | 南通大学 | Self-adaptive centering device and method for crawler of engineering drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |