CA1259648A - Drive track unit - Google Patents
Drive track unitInfo
- Publication number
- CA1259648A CA1259648A CA000532756A CA532756A CA1259648A CA 1259648 A CA1259648 A CA 1259648A CA 000532756 A CA000532756 A CA 000532756A CA 532756 A CA532756 A CA 532756A CA 1259648 A CA1259648 A CA 1259648A
- Authority
- CA
- Canada
- Prior art keywords
- drive
- vehicle
- track
- track unit
- wheels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K25/00—Auxiliary drives
- B60K25/08—Auxiliary drives from a ground wheel, e.g. engaging the wheel tread or rim
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/06—Endless track vehicles with tracks without ground wheels
- B62D55/07—Mono-track vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
ABSTRACT
A drive track unit for converting a rear wheel vehicle comprising a support frame for supporting a track assembly, the track assembly having a single track unit with an upper and lower run. The support frame is sized to fit between the rear wheel of the vehicle and it is securely connected to the frame of the vehicle. The lower run of the track unit has a position, relative to the rear wheels of the vehicle, to provide the main drive means for the vehicle, also proper drive means for the use in connecting the drive means of the vehicle to the track unit to operate the track assembly.
A drive track unit for converting a rear wheel vehicle comprising a support frame for supporting a track assembly, the track assembly having a single track unit with an upper and lower run. The support frame is sized to fit between the rear wheel of the vehicle and it is securely connected to the frame of the vehicle. The lower run of the track unit has a position, relative to the rear wheels of the vehicle, to provide the main drive means for the vehicle, also proper drive means for the use in connecting the drive means of the vehicle to the track unit to operate the track assembly.
Description
~5~ 8 This invention is directed toward a drive track unit for addition to a wheeled vehicle.
The invention is particularly directed toward a drive track unit for addition to a recreation vehicle having two rear drive wheels, the drive track unit adapted to be positioned between the rear wheels and to replace them as the main drive means for the vehicle.
Wheeled recreation vehicles of the type known as all-terrain vehicles or ATV's employ large, low pressure tires and can be equipped with two front and two rear wheels, or one front and two rear wheels. The rear wheels are usually the drive wheels. The vehicles carry a single rider and can be used over various types of terrain such as smooth or rough ground, swamps, sand or snow.
In snow, however, the wheeled vehicle does not have a good traction as is desirable. It is known to replace the rear drive wheel or wheels of vehicles with tracks units to provide better traction on snow. However, when modifying vehicles with two rear wheels, two track units are usually employed. This makes the conversion to a track drive relatively expensive, and also makes the conversion operation relatively complicated.
It is the purpose of the present invention to provide a drive track unit for a vehicle having two rear drive wheels that simply and easily converts the vehicle to a rear track drive vehicle.
A single track unit is employed that is designed to be mounted between the rear wheels of the vehicle and in a position to replace the wheels as the driving means. With the use of the single track unit, conversion of the vehicle from a rear wheel drive to rear track drive is relatively simple. The rear drive wheels need not be removed. In fact, retention of the rear drive wheels with the track unit provides a vehicle having better cornering properties in snow since the drive wheels come into play providing additional stability and traction to the vehicle. The track unit is designed to be mounted to the existing frame of the vehicle, directly or indirectly, at two longitudinally spaced-apart locations so as to securely connect the track unit to the vehicle. Litt]e modification is needed to the vehicle to receive the track unit.
59~
The invention is particularly directed to a drive track unit for converting a rear wheel drive vehicle, having at least two rear drive wheels driven by power means, to a rear track drive vehicle. The drive track unit has a support frame for supporting a trac]c assembly haviny a track with an upper and lower run, the support rame sized to fit between the rear wheels of the vehicle. First connecting means are provided on the front of the support frame for use in connecting the support frame to the vehicle in front of the rear wheels. Second connec-ting means are providea on top of thè support ~rame, intermediateits ends for use in connecting the support Erame to the rear of the vehicle, between the rear wheels. The second connectincJ
means are dimensioned to locate the lower track run oE the track assembly in a position, relative to the rear wheels of the vehicle, to provide the main drive for the vehicle. Drive means are provided at the rear of the support frame for use in connecting the power means of the vehicle to the trac]c unit to operate the track assembly.
The invention will now be described in detail having reference to the accompanying drawings in which:
Fig. 1 is a perspective view of the drive track unit;
Fig. 2 is a side view of the track unit;
Fig. 3 is a front view of the track unit;
Fig. ~ is a side view showing the drive track unit installed on a wheeled vehicle; and Fig. 5 is a rear view of the drive unit when installed on a wheeled vehicle.
The drive track unit 1 or the present invention, as shown in Figs. 1 to 3, has a main frame 3 supporting a track assembly 5. The main frame 3 has two parallel side supports 7, 9. Cross-bars connect the side supports 7, 9 together to provide a rigid main frame 3. A rear cross-bar 11 extends between ~2~ 9L8 a pair of brac]cets 13, 15 extending rearwardly from the back ends 17, 19 of the side supports 7, 9 respectively. The rear cross-bar 11 is fixed to the brackets 13, lS and extends trans-versely of the side supports 7, 9. An intermediate cross-bar 21 extends between the side supports 7, 9 slightly in front of the mid-length point of the side supports. The intermediate cross-bar 21 extends transversely across the top sides 23, 25 of the ~ 2A -~25~6~
of the side supports 7, 9 and is fixed to brackets 27, 29 mounted on the outer sides of the sides supports 7, 9.
A front cross-bar 31 joins the front ends 33, 35 oE the side supports 7, 9 respectively. The front cross-bar 31 is of inverted U-shape having a top, horizontal member 37 and downwardly directed, vertical members 39, 41. First mounting means in the form of a mounting bracket 43 is fixed to the top of the top member 37 of the front cross-bar 31 for use in mounting the drive track unit 1 on a wheeled vehicle as will be described. The front cross-bar 31 is indirectly mounted on the side supports 7, 9. Mounting bars 47, 49 extend forwardly from the front ends 33, 35 of the side supports 7, 9 respectively. The mounting bars 47, 49 are longitudinally adjustably mounted in the side supports 7, 9 and mount the track assembly 5 at their front ends 51, 53 as will be described. Forwardly, upwardly curved brackets 55, 57 are fixed on the mounting bars 47, 49 behind their front ends 51, 53. The lower ends of the vertical members 39, 41 of the front cross-bar 31 are pivotally connected to the free ends of the brackets 55, 57 by pivot members 59, 61.
The track assembly 5 has an endless belt 63 with an upper run 65 and a lower run 67 mounted over idler sprocket wheels 69 at the front of the unit, drive sprocket wheels 71 at the rear of the unit, and bogies 73 between the idler and drive wheels 69, 71. There are two idler wheels 69 rotatably mounted on a front shaft 75. The front shaft 75 is fixedly mounted between the front ends 51, 53 of the track unit mounting bars 47, 49 to connect the front of the track assembly 5 to the frame 3. There are two drive wheels 71 fixedly mounted on a rear drive shaft 77. The rear drive shaft 77 in turn is rotatably mounted on brackets 79 located on the bottom sides 81, 83 of the side supports 7, 9 ad~acent their rear ends 17, 19 to connect the rear of the track assembly 5 to the frame 3. The bogies 73 are mounted on each side of the track assembly 5 either directly from the side supports 7, 9 by suitable means (not shown) or indirectly by a support frame (not shown) mounted to the side supports. The mounting of the bogies 73 is well known. The track 63 has two parallel rows 85, 87 of openings 89, 91 which cooperate with sprockets on the idler and drive sprockets wheels 69, 71 to drive the track 63 about the ~25~
wheels when drive sprocket wheels 71 are rotated as is well known. While one Eorm of track assembly 5 has been described, other knol,7n forms of track assemblies can be usecl.
Drive means 95 are provided on the unit for use in rotating the drive shaft 77 so as to drive the track 63. The drive means 95 includes a chain drive shaft 97 mounted on the top of the side supports 7, 9 adjacent their rear ends 17, 19. ~he chain drive shaft 97i~is rotatably mounted between a pair of brac}cets 99, 101 on the side suppor~s 7, 9. The bracket 99 can be adjus-10 tably mounted on the top of the side support 7 for adjustmentin a longitudinal direction. A portion 103 o~ the chain drive shaft 97 projects outwardly past the bracket 99. A firs-t chain drive sproc];et 105 is fi:~edly mounted on the projecting portion 103 of the shaft 97. A second chain drive sprocket 107 is mounted on the other end portion 109 of the chain drive shaft 97 which projects just past the bracket 101. A third chain drive sprocket 111 is mounted on the drive shaft 77 beneath the second chain sprocket 107. Sprocket 111 is adjacent the outer side of support 9. A chain 113 is mounted over the second and third chain drive
The invention is particularly directed toward a drive track unit for addition to a recreation vehicle having two rear drive wheels, the drive track unit adapted to be positioned between the rear wheels and to replace them as the main drive means for the vehicle.
Wheeled recreation vehicles of the type known as all-terrain vehicles or ATV's employ large, low pressure tires and can be equipped with two front and two rear wheels, or one front and two rear wheels. The rear wheels are usually the drive wheels. The vehicles carry a single rider and can be used over various types of terrain such as smooth or rough ground, swamps, sand or snow.
In snow, however, the wheeled vehicle does not have a good traction as is desirable. It is known to replace the rear drive wheel or wheels of vehicles with tracks units to provide better traction on snow. However, when modifying vehicles with two rear wheels, two track units are usually employed. This makes the conversion to a track drive relatively expensive, and also makes the conversion operation relatively complicated.
It is the purpose of the present invention to provide a drive track unit for a vehicle having two rear drive wheels that simply and easily converts the vehicle to a rear track drive vehicle.
A single track unit is employed that is designed to be mounted between the rear wheels of the vehicle and in a position to replace the wheels as the driving means. With the use of the single track unit, conversion of the vehicle from a rear wheel drive to rear track drive is relatively simple. The rear drive wheels need not be removed. In fact, retention of the rear drive wheels with the track unit provides a vehicle having better cornering properties in snow since the drive wheels come into play providing additional stability and traction to the vehicle. The track unit is designed to be mounted to the existing frame of the vehicle, directly or indirectly, at two longitudinally spaced-apart locations so as to securely connect the track unit to the vehicle. Litt]e modification is needed to the vehicle to receive the track unit.
59~
The invention is particularly directed to a drive track unit for converting a rear wheel drive vehicle, having at least two rear drive wheels driven by power means, to a rear track drive vehicle. The drive track unit has a support frame for supporting a trac]c assembly haviny a track with an upper and lower run, the support rame sized to fit between the rear wheels of the vehicle. First connecting means are provided on the front of the support frame for use in connecting the support frame to the vehicle in front of the rear wheels. Second connec-ting means are providea on top of thè support ~rame, intermediateits ends for use in connecting the support Erame to the rear of the vehicle, between the rear wheels. The second connectincJ
means are dimensioned to locate the lower track run oE the track assembly in a position, relative to the rear wheels of the vehicle, to provide the main drive for the vehicle. Drive means are provided at the rear of the support frame for use in connecting the power means of the vehicle to the trac]c unit to operate the track assembly.
The invention will now be described in detail having reference to the accompanying drawings in which:
Fig. 1 is a perspective view of the drive track unit;
Fig. 2 is a side view of the track unit;
Fig. 3 is a front view of the track unit;
Fig. ~ is a side view showing the drive track unit installed on a wheeled vehicle; and Fig. 5 is a rear view of the drive unit when installed on a wheeled vehicle.
The drive track unit 1 or the present invention, as shown in Figs. 1 to 3, has a main frame 3 supporting a track assembly 5. The main frame 3 has two parallel side supports 7, 9. Cross-bars connect the side supports 7, 9 together to provide a rigid main frame 3. A rear cross-bar 11 extends between ~2~ 9L8 a pair of brac]cets 13, 15 extending rearwardly from the back ends 17, 19 of the side supports 7, 9 respectively. The rear cross-bar 11 is fixed to the brackets 13, lS and extends trans-versely of the side supports 7, 9. An intermediate cross-bar 21 extends between the side supports 7, 9 slightly in front of the mid-length point of the side supports. The intermediate cross-bar 21 extends transversely across the top sides 23, 25 of the ~ 2A -~25~6~
of the side supports 7, 9 and is fixed to brackets 27, 29 mounted on the outer sides of the sides supports 7, 9.
A front cross-bar 31 joins the front ends 33, 35 oE the side supports 7, 9 respectively. The front cross-bar 31 is of inverted U-shape having a top, horizontal member 37 and downwardly directed, vertical members 39, 41. First mounting means in the form of a mounting bracket 43 is fixed to the top of the top member 37 of the front cross-bar 31 for use in mounting the drive track unit 1 on a wheeled vehicle as will be described. The front cross-bar 31 is indirectly mounted on the side supports 7, 9. Mounting bars 47, 49 extend forwardly from the front ends 33, 35 of the side supports 7, 9 respectively. The mounting bars 47, 49 are longitudinally adjustably mounted in the side supports 7, 9 and mount the track assembly 5 at their front ends 51, 53 as will be described. Forwardly, upwardly curved brackets 55, 57 are fixed on the mounting bars 47, 49 behind their front ends 51, 53. The lower ends of the vertical members 39, 41 of the front cross-bar 31 are pivotally connected to the free ends of the brackets 55, 57 by pivot members 59, 61.
The track assembly 5 has an endless belt 63 with an upper run 65 and a lower run 67 mounted over idler sprocket wheels 69 at the front of the unit, drive sprocket wheels 71 at the rear of the unit, and bogies 73 between the idler and drive wheels 69, 71. There are two idler wheels 69 rotatably mounted on a front shaft 75. The front shaft 75 is fixedly mounted between the front ends 51, 53 of the track unit mounting bars 47, 49 to connect the front of the track assembly 5 to the frame 3. There are two drive wheels 71 fixedly mounted on a rear drive shaft 77. The rear drive shaft 77 in turn is rotatably mounted on brackets 79 located on the bottom sides 81, 83 of the side supports 7, 9 ad~acent their rear ends 17, 19 to connect the rear of the track assembly 5 to the frame 3. The bogies 73 are mounted on each side of the track assembly 5 either directly from the side supports 7, 9 by suitable means (not shown) or indirectly by a support frame (not shown) mounted to the side supports. The mounting of the bogies 73 is well known. The track 63 has two parallel rows 85, 87 of openings 89, 91 which cooperate with sprockets on the idler and drive sprockets wheels 69, 71 to drive the track 63 about the ~25~
wheels when drive sprocket wheels 71 are rotated as is well known. While one Eorm of track assembly 5 has been described, other knol,7n forms of track assemblies can be usecl.
Drive means 95 are provided on the unit for use in rotating the drive shaft 77 so as to drive the track 63. The drive means 95 includes a chain drive shaft 97 mounted on the top of the side supports 7, 9 adjacent their rear ends 17, 19. ~he chain drive shaft 97i~is rotatably mounted between a pair of brac}cets 99, 101 on the side suppor~s 7, 9. The bracket 99 can be adjus-10 tably mounted on the top of the side support 7 for adjustmentin a longitudinal direction. A portion 103 o~ the chain drive shaft 97 projects outwardly past the bracket 99. A firs-t chain drive sproc];et 105 is fi:~edly mounted on the projecting portion 103 of the shaft 97. A second chain drive sprocket 107 is mounted on the other end portion 109 of the chain drive shaft 97 which projects just past the bracket 101. A third chain drive sprocket 111 is mounted on the drive shaft 77 beneath the second chain sprocket 107. Sprocket 111 is adjacent the outer side of support 9. A chain 113 is mounted over the second and third chain drive
2~ sprocXets 107, 111. A casting 115, mounted on the side support 9, can enclose the chain 113 and sprockets 107, 111.
Second mounting means 119 are provided on the drive track unit 1 for use in connecting it to the vehicle. The second mounting means 119 comprise axle brackets 121, 123 mounted on the top sides 23, 25 of the side supports 7~ 9 just rear~ardly o~ the intermediate cross-bar 21. ~3ach axle bracket 121, 123 has a hinged top clamp 125 that cooperates ~7ith a base 127 to define a circular opening 129 for receiving a vehicle axle housing as ~ill be described.
Slider bars 131, 133 can be mountecl Erom the intermediate cross-bar 21 to bear on the upper run 65 of the krack 63 to improve its operation.
:~L25~6~3 The drive track unit 1 is adapted to be used with an ATV 141 of the type having one ~ront wheel 143 and a pair of rear drive wheels 145, 147 mounted on an axle 149 as shown in Figs. 4 and 5. The axle 149 is driven by the power means (not shown) of the vehicle. The vehicle 141 is slightly modified to have a fourth chain drive sprocket 151 mounted on the axle 149 adjacent on rear drive wheel 145. A mounting bracket 153 is also provided on the bottom frame 155 of the vehicle between the front and rear wheels.
~596~ 51 The mounting bracket 153 can be adjustably mounted ~n the rame 155.
The drive track unit 1 is mounted onto the vehicle 141 between its rear drive ~heels 1~5, 1~7 with the axle brackets 121, 123 clamped onto the axle housing tube 157 of the vehicle adjacent the rear wheels 145, 1~7. The front mounting bracket 43, pivotably moun-ted on the track unit 1, is bolted or otherwise detachably fastened to the vehicle mounting brac~et 153 on the vehicle frame 155. A drive chain 159 is connected between the Eourth chain drive sprocket 151 on the vehicle 141 and the first chain drive sprocket 105 on the drive track unit 1. Power is transmitted to the track unit 1 via drive chain 159, and Erom drive shaft 97 carrying the ~irst chain drive sprocket 105, to the drive shaft 77 oE the track assemhly 5 by chain 113.
The drive traclc unit 1, when attached to vehicle 141, has the lower run 67 of track 63 positioned even with or just below the bottoms of the rear drive wheels 145, 147 to provide the main drive _maa~ for the vehicle. However, -the rear drive wheels 145, 1~7 assist driving the vehicle in deep snow and turns.
The tension OI the tracks 63 can be adjusted by adjusting the 20 ~ mounting bars 47, 49 on which the front shaft 75 of the track assem-bly is mounted. The tension of the drive chain 159 can be adjusted by adjustiny the position of the bracket 99 on the side support 7.
Applicant's drive track unit allows as wide a track unit as possible to be located between the drive wheels of a vehicle. ~ith horizontal chain drive 159 located above the upper run 65 of the track unit, no casing is needed to protect it from snow and/or brush.
A casing 115 is used on vertical chain drive 113 but this casing is located behind the wheels where there is room for it. The use o:E
two chains and drive shaft 97 also allows the sproc]~ets 103, 107 to be set to yive the most e~ficient power transmission. This is im-portant in keeping the unit as small and as compact as possible.
Second mounting means 119 are provided on the drive track unit 1 for use in connecting it to the vehicle. The second mounting means 119 comprise axle brackets 121, 123 mounted on the top sides 23, 25 of the side supports 7~ 9 just rear~ardly o~ the intermediate cross-bar 21. ~3ach axle bracket 121, 123 has a hinged top clamp 125 that cooperates ~7ith a base 127 to define a circular opening 129 for receiving a vehicle axle housing as ~ill be described.
Slider bars 131, 133 can be mountecl Erom the intermediate cross-bar 21 to bear on the upper run 65 of the krack 63 to improve its operation.
:~L25~6~3 The drive track unit 1 is adapted to be used with an ATV 141 of the type having one ~ront wheel 143 and a pair of rear drive wheels 145, 147 mounted on an axle 149 as shown in Figs. 4 and 5. The axle 149 is driven by the power means (not shown) of the vehicle. The vehicle 141 is slightly modified to have a fourth chain drive sprocket 151 mounted on the axle 149 adjacent on rear drive wheel 145. A mounting bracket 153 is also provided on the bottom frame 155 of the vehicle between the front and rear wheels.
~596~ 51 The mounting bracket 153 can be adjustably mounted ~n the rame 155.
The drive track unit 1 is mounted onto the vehicle 141 between its rear drive ~heels 1~5, 1~7 with the axle brackets 121, 123 clamped onto the axle housing tube 157 of the vehicle adjacent the rear wheels 145, 1~7. The front mounting bracket 43, pivotably moun-ted on the track unit 1, is bolted or otherwise detachably fastened to the vehicle mounting brac~et 153 on the vehicle frame 155. A drive chain 159 is connected between the Eourth chain drive sprocket 151 on the vehicle 141 and the first chain drive sprocket 105 on the drive track unit 1. Power is transmitted to the track unit 1 via drive chain 159, and Erom drive shaft 97 carrying the ~irst chain drive sprocket 105, to the drive shaft 77 oE the track assemhly 5 by chain 113.
The drive traclc unit 1, when attached to vehicle 141, has the lower run 67 of track 63 positioned even with or just below the bottoms of the rear drive wheels 145, 147 to provide the main drive _maa~ for the vehicle. However, -the rear drive wheels 145, 1~7 assist driving the vehicle in deep snow and turns.
The tension OI the tracks 63 can be adjusted by adjusting the 20 ~ mounting bars 47, 49 on which the front shaft 75 of the track assem-bly is mounted. The tension of the drive chain 159 can be adjusted by adjustiny the position of the bracket 99 on the side support 7.
Applicant's drive track unit allows as wide a track unit as possible to be located between the drive wheels of a vehicle. ~ith horizontal chain drive 159 located above the upper run 65 of the track unit, no casing is needed to protect it from snow and/or brush.
A casing 115 is used on vertical chain drive 113 but this casing is located behind the wheels where there is room for it. The use o:E
two chains and drive shaft 97 also allows the sproc]~ets 103, 107 to be set to yive the most e~ficient power transmission. This is im-portant in keeping the unit as small and as compact as possible.
Claims (6)
1. A drive track unit for converting a rear wheel drive vehicle having at least two rear drive wheels driven by power means to a rear track drive vehicle comprising: a support frame for supporting a track assembly having a track with an upper and lower run, the support frame sized to fit between the rear wheels of the vehicle, first connecting means on the front of the support frame for use in fixedly connecting the support frame to the vehicle in front of the rear wheels; second connecting means on the top of the support frame, intermediate its ends for use in fixedly connecting the sup-port frame to the rear of the vehicle between the rear wheels, the second connecting means dimensioned to locate the lower run of the track unit in a position, relative to the rear wheels, to provide the main drive for the vehicle; and drive means at the rear of the support frame, and at least partly above the upper run of the track and at least partly behind the rear wheels of the vehicle when con-nected thereto, for use in connecting the power means of the ve-hicle to the track unit to operate the track assembly.
2. A drive track unit as claimed in claim 1 wherein the drive means has a generally horizontal drive shaft rotatably mounted between a pair of brackets at the top, rear end of the mounting frame a first chain drive sprocket on the drive shaft for use in connecting a generally horizontal chain drive to the power means for the rear drive wheels of the vehicle, and a second chain drive sprocket on one end of the drive shaft for use in connecting a generally verti-cal chain drive to the rear end of the track assembly.
3. A drive track unit as claimed in claim 2 wherein the first chain drive sprocket is located on the other end of the drive shaft.
4. A drive track unit as claimed in claim 2 including a casing enclosing the second chain drive sprocket and the generally verti-cal chain drive.
5. A drive track unit as claimed in claim 1 wherein the second connecting means comprises brackets adapted to detachably connect the drive track unit to a rear axle housing on the vehicle.
6. A drive track unit as claimed in claim 5 wherein the first connecting means comprises a mounting bracket hingedly connected to the front of the support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000532756A CA1259648A (en) | 1987-03-23 | 1987-03-23 | Drive track unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000532756A CA1259648A (en) | 1987-03-23 | 1987-03-23 | Drive track unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1259648A true CA1259648A (en) | 1989-09-19 |
Family
ID=4135257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000532756A Expired CA1259648A (en) | 1987-03-23 | 1987-03-23 | Drive track unit |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1259648A (en) |
-
1987
- 1987-03-23 CA CA000532756A patent/CA1259648A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |