CA2051316A1 - Snow cycle attachment for bicycle frame - Google Patents
Snow cycle attachment for bicycle frameInfo
- Publication number
- CA2051316A1 CA2051316A1 CA 2051316 CA2051316A CA2051316A1 CA 2051316 A1 CA2051316 A1 CA 2051316A1 CA 2051316 CA2051316 CA 2051316 CA 2051316 A CA2051316 A CA 2051316A CA 2051316 A1 CA2051316 A1 CA 2051316A1
- Authority
- CA
- Canada
- Prior art keywords
- assembly
- drive
- gear
- belt
- rear axle
- 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.)
- Abandoned
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- Automatic Cycles, And Cycles In General (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A kit for connecting a multiple speed bicycle to a multiple speed snow cycle, the kit including a ski assembly adapted to be mounted on the handlebar column, a drive device mounted on the rear axle and being operatively connected to the bicycle sprocket through a multiple speed derailleur and a dual belt drive assembly mounted on the bicycle below the rear axle, the drive assembly being connected to the drive device to propel the snow cycle on rotation of the sprocket.
A kit for connecting a multiple speed bicycle to a multiple speed snow cycle, the kit including a ski assembly adapted to be mounted on the handlebar column, a drive device mounted on the rear axle and being operatively connected to the bicycle sprocket through a multiple speed derailleur and a dual belt drive assembly mounted on the bicycle below the rear axle, the drive assembly being connected to the drive device to propel the snow cycle on rotation of the sprocket.
Description
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3NOW CYCLE AT~ACHM1~3N~ FOR A BICYC~E ~RAME
FIELD OF THE INVENTION
The present invention relates yenerally to a vehicle for traveling on snow and more particularly to a conversion kit for converting a bicycle to a snsw cycle.
BACKGRoUND_ F THE INVENTION
Bicycles of various type~ are used extensively for recreation and sport. However, conversion kits are available for adapting a bicycle for use on snow. These kits are yenerally limited to the addition of skis to the ; front and rear of the frame. Vehicles of this type are shown in United States Letters Patent Nos. 3,561,783 and 4,027,891. This type of bike is difficult to balance because of the single ski arrangement. Power driven cycles have also been designed such as shown in United States Letters Patent Nos. 3,814,198 and 3,915,468. Both of these bikes are limited to snow travel.
SUMMARY OF ~HE~ INVENTION
~The present invention advantageously provides an attachment kit which can be substituted for the wheels :~
; ~ of a bicycle and driven ln~irectly or directly off of the i.J ~.i .!.j .f. ~,J ~ , ~
chain drive assembly of the bicycle. Conversion of the bicycle to a winter sport vehicle extends its use to a full year~
One of the primary advantages o~ the invention is the ability to quickly and easily convert a multi-speed bicycle to a multi-speed snow cycle. This is accomplished by merely removing the wheels ~rom the bicycle and attaching the belt drive assembly to the frame. The belt drive assembly can then be advantageously connected to use the multiple speed derailleur as well as the hand brake, both of which can be operated off of the handlebars.
A further advantage of the invention is the improved stability of the snow cycle provided by a dual belt drive assembly which straddles the frame and engages the snow on each side of the rear wheel.
Other advantages of the present invention and a fuller understanding of the operation and the system which it implements will be appreciated upon examination of the detailed description which follows, taken in conjunction with the accompanying drawings and the appended claims.
DESCRIPTION OF THE DRAWINGS
Figure I is a side elevation view of the snow cycle showing the belt drive assembly mounted on the ~rame.
Figure 2 is a perspective view of dual belt drive attachment.
Figure 3 is a view oE the front ski attachment.
Figure 4 is a perspective view of the belt drive gear.
Figure 5 is a top view of the pulley drive gear ; assembly.
Figure 6 is a rear view o~ the pulley drive :
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gear assembly.
Figure 7 is a side elevation view of a modified snow cycle having a modified drive assembly.
Figure ~ is a perspective view of the ~ront ski.
Figure 9 is a perspective view of the rear drive assembly.
Figure 10 is a top view parkly in section o~
the modified drive assembly.
Figure 11 is a view taken on line 11-11 of Figure 10 showing the wheel drive.
Figure 12 is a view taken on line 12-12 o~
Figure 10 showing the belt drive assembly.
Before explaining at least one embodiment o~
~5 the invention in detail it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the ~ollowing description or illustrated in the drawings. The invention is capable of other embodiments or being practiced or carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein is ~or the purposes of description and should not be regarded as limiting.
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DETAILED_DESC IPTION OF THE PREFERRED ~MBODTMENTS
The snow cycle 10 according to the present invention utilizes a bicycle frame 12 in the form o~ a parallelogram having a tubular steering support column 14, a tubular seat support column 16, a tubular pedal axle support column 18, and a tubular cross bar 20. The cross bar 20 is connected at one end to the steering column 14 and at the other end to the seat support column . .
16. The axl~e support column 18 is connected at the upper ~ end to the steering support column 14 and at the lower :' f ~ iJ ~
end to the pedal axle housing 22. The seat support column 16 is connected to the axle housing 22. A
handlebar 24 is connected to a front fork 25 which is mounted in the steering column 14. A rear axle housing 26 is supported at the rear of the frame 12 by a rear fork 28 connected to the pedal axle housing 22. A pair of diverging tubular support members 30 are connected to the seat support column 16 and to the axle housing 26.
pedal crank 32 is mounted or rotary motion in housing 22 to drive a sprocket 34. A rear wheel axle 36 is mounted in rear axle housing 26. The multiple speed derailleur 38 is left on the rear axle 36.
In accordance with the invention, the belt drive assembly includes a front ski attachment 40 secured to the steering fork 25 and a drive disc 42 mounted on the rear axle 36. A belt drive attachment 44 is secured to the frame 12 by means of a pair of front brackets 46 and a pair of rear support brackets 48. The front bracket~ 46 are secured to column 18 by cap 47. The rear brackets 48 are secured to the rear forks 28 by caps 49.
The sprocket 34 is connected to the derailleur 38 by means of a chain 45 which is used to drive the drive disc 42 in a conventional manner.
The drive disc 42 can be formed o~ various material such as a plastic or metal having a thickne~s corresponding to the width of the wheel rim. With this arrangement, the standard caliper brake 51 used on the bicycle can be left on the frame 12 in a position to engage the drive disc 42 and can be operated from the handgrip 27 on the handlebar.
The front ski attachment 40 as seen in Figure 3 includes a pair of skis 50 pivotally mounted to the ends ; of vertical frame members 52 by means of pins 54. The frame members are interconnected by a crossbar 56. Each frame member includes a channel 58 at the upper end which : :
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matingly engages the back of the fork ~5. The ~rame members are secured to the for]k 25 by the front axle 62 which passes through the axle ~hub in the front fork 25.
The belt drive attachment 44 as shown in Figure 2 includes a pan 70 in the form of a "U" having an elongate base 71 a pair of sid~e walls 73 and flanges 72 extending horizontally outwardly from each of the side walls 73 of the shaped pan. The front portion "A" of the pan 70 is angled upwardly from the rear portion "B" to engage any irregular surfaces, drifts or depressions, in the sur~ace o~ the snow. A pair o~ belts 74 are supported on the sides of pan 70 by means of pulley assemblies 76 and 78 which are journalled for rotation in the front and back of pan 70. The base 71 of the pan 70 should be spaced upwardly from the belts 74 so that it does not ride on the snow except to provide additional support in so~t snow. The pulley assembly 76 includes a shaft 80 which is journalled in the pan 70 at the forward or front end of the assembly and a pair of pulleys 82.
The rear pulley assembly 78 includes a shaft 84 which is journalled in the back of pan 70 and a pair of pulleys 86.
A set of idler roll assemblies 88 are mounted on each sidP of the pan to guide the belts 74 around the ~ront portion "A" and rear portion "B" of the pan 70.
Each idler assembly includes two pair of rollers 90 mounted on axles 92 which bear against the top of the upper belt 74, and a single pair of idler rolls 94 mounted on axles 96 is provided on the upper surface of the lower belt 74. Guide rollers 75 are provided along each side of the pan to maintain the belts 74 in engagement with the snow.
The belts 74 are driven by means of a drive gear assembly 98 mounted in pan 70. The gear assembly 98 connects the drive disc gear 42 to the rear pulley : :. .:: , , .:
assembly 7~. The gear assembly 98 includes a pinion gear lO0 mounted on shaft 84 which is driven by means of a drive gear 104 mounted on a shaft 106 in pan 70. A
cogwheel 108 is mounted on the shaft 106 in a position to engage and support the drive disc 42. The cogwheel 108 and pulley 86 have the same diameter. The drive disc 42 can be supported in the pan 70 by means of an idler gear 65 provided in the front of disc 42. A direct drive could also be used to rotate the belts if desired. With this arrangement the gear assembly could be eliminated, by connecting the drive di~sc directly to the gear 100 via a belt or chain.
A modified snow aycle 110 as shown in Figures 7-12 utilizes a bicycle frame 112 of the type shown in Figure 1. The ~rame generally includes a tubular steering support column ~14, a tubular support seat column 116 and a tubular pedal axle support column 118 and a tubular cross bar 120. Cross bar 120 is connected at one end to the steering column 114 at the other end to the seat supp~rt column 116. The axle support column 118 is connected at the upper end to the steering support column 114 and at the lower end to the pedal axle housing 122.
The seat support column 116 is connected to the axle housing 122. The handle bar 124 is connected to the front fork 125 which is mounted in the steering column 114. A rear axle housing 126 is supported at the rear of the frame 112 by a rear fork 128 connected to the pedal axle housing 122. A pair of diverging tubular support members 130 are connected to the seat support column 116 and to the axle housing 1~6. The pedal crank 132 is mounted for rotary motion in housing 122 to drive a sprocket 134. A rear axle 136 is mounted in the rear axle housing 126. A multiple speed derailer 138 may be provided on the rear axle 136.
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In accordance with the invention the modified front ski attachment 140 is secured to the steering fork 1250 Referring to Figure 8 the front ski attachment 140 includes a single ski 150 pivol:ally mounted to the ends of vertical frame members 152. The ski includes a leaf spring 154 which is connected t;o the ski by pins 156 and to the frame members 152 by a pin 158. The frame members 152 are connected by cross members 160 and are secured to the front fork by pins 162 which pass through the holes 164 in the frame member.
The modified belt drive attachment 144 as shown in Figure 9 incLudes a pan 170 having a elongated base 172 and a pair of sidewalls 173. The pan is clased on the front by a wall 174 which angles upwardly from the pan 172 and a rear wall 175. A pair of belts 176 are supported on the sides of the pan 170 by means of pulley assemblies 178 and 180. The base 172 of the pan 170 should be spaced upwardly from the belts 176 so that it does not ride on the snow except to provide additional support in so~t snow. The pulley assemblies 178 and 180 each include a shaft 181 which are mounted in the front and back of the pan 170 and a pair of pulleys 182 mounted on the end of each o~ the shafts 181. Each of the drive pulleys 182 includes a cog wheel 184 having teeth 186 which matingly engage corresponding rectangular openings 188 in each of the belts 176.
The belts 176 are driven by means of drive gear assemblies 198 mounted in the pan 170. Each drive gear ; assembly 198 includes a pinion gear 200 mounted on the shaft 181 which is driven by means of a drive gear 204 mounted on a shaft 206 in the pan 170. A cog whePl 208 is mounted on each of the shafts 206. The belt drive attachment 144 is mounted on the rear axle 136 by means of a pair of triangular shaped supports 210 connected to the side wal;Ls 173 of pan 170.
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The belt drive attachment 144 is driven by means of a drive wheel assembly 142 which includes the rear bicycle wheel 146 and a cog type timing belt 1~8.
In this regard, the timing belt 148 replaces the tire on the wheel 146. The timing belt can take a number of forms one of which would be a "tire" which has been molded with ~ogs similar to the cogs of the timing belt 148. This advantageously provides a much lighter drive wheel at lower cost and eliminates the requirement oP
removing the bicycle wheel and substituting a cog wheel.
The tire can also be in the form of an inflatable type belt 148 which can be inflated to hold it in place on the wheel. The timing belt 148 will ride on the cog wheels 208 thus providing drive for the belts at both the front and the back o~ the belt drive attachment 144.
The drive means could also take the form of a double chain drive. In this regard, the rear wheel of the bicycle is removed and a wheel sprocket is mounted on the rear axle which is driven by the bicycle chain. A
drive sprocket is mounted on the rear axle on each side of the wheel sprocket. The drive sprockets are then connected to the cog wheels 208 by chains. Although two drive sprockets are described, a single sprocket could also be usedO It is also within the contemplation of the invention to use belts in place of chains. Pulleys would be substituted for the cog wheels 208 and drive sprockets.
A pair of idler rolls 220 are provided on the drive belt attachment 144 to take up the slack and maintain the belt's tension. In this regard each o~
idler rolls 211 is mounted on a pivot arm 212 which is pivotally connected to the pan and biased by means of springs 214 into engagement with the belt.
Thus, it should be apparent that there has been provided in accordance with the present invention a snow cycle attachment for a bicycle frame that fully satisfies : : ~ . .: . - : - ~., .,,: . :. . "
the aims and advantages set forth above. Although the invention has been described in conjunction with specific embodiments thereof, it is eviclent that many alternatives, modifications ancl variations will be apparenk to those skilled in the art. Accordingly, it is intended to embrace all such a]ternatives, modi~ications and variations that ~all within the spirit and broad scope of the appended claims.
3NOW CYCLE AT~ACHM1~3N~ FOR A BICYC~E ~RAME
FIELD OF THE INVENTION
The present invention relates yenerally to a vehicle for traveling on snow and more particularly to a conversion kit for converting a bicycle to a snsw cycle.
BACKGRoUND_ F THE INVENTION
Bicycles of various type~ are used extensively for recreation and sport. However, conversion kits are available for adapting a bicycle for use on snow. These kits are yenerally limited to the addition of skis to the ; front and rear of the frame. Vehicles of this type are shown in United States Letters Patent Nos. 3,561,783 and 4,027,891. This type of bike is difficult to balance because of the single ski arrangement. Power driven cycles have also been designed such as shown in United States Letters Patent Nos. 3,814,198 and 3,915,468. Both of these bikes are limited to snow travel.
SUMMARY OF ~HE~ INVENTION
~The present invention advantageously provides an attachment kit which can be substituted for the wheels :~
; ~ of a bicycle and driven ln~irectly or directly off of the i.J ~.i .!.j .f. ~,J ~ , ~
chain drive assembly of the bicycle. Conversion of the bicycle to a winter sport vehicle extends its use to a full year~
One of the primary advantages o~ the invention is the ability to quickly and easily convert a multi-speed bicycle to a multi-speed snow cycle. This is accomplished by merely removing the wheels ~rom the bicycle and attaching the belt drive assembly to the frame. The belt drive assembly can then be advantageously connected to use the multiple speed derailleur as well as the hand brake, both of which can be operated off of the handlebars.
A further advantage of the invention is the improved stability of the snow cycle provided by a dual belt drive assembly which straddles the frame and engages the snow on each side of the rear wheel.
Other advantages of the present invention and a fuller understanding of the operation and the system which it implements will be appreciated upon examination of the detailed description which follows, taken in conjunction with the accompanying drawings and the appended claims.
DESCRIPTION OF THE DRAWINGS
Figure I is a side elevation view of the snow cycle showing the belt drive assembly mounted on the ~rame.
Figure 2 is a perspective view of dual belt drive attachment.
Figure 3 is a view oE the front ski attachment.
Figure 4 is a perspective view of the belt drive gear.
Figure 5 is a top view of the pulley drive gear ; assembly.
Figure 6 is a rear view o~ the pulley drive :
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gear assembly.
Figure 7 is a side elevation view of a modified snow cycle having a modified drive assembly.
Figure ~ is a perspective view of the ~ront ski.
Figure 9 is a perspective view of the rear drive assembly.
Figure 10 is a top view parkly in section o~
the modified drive assembly.
Figure 11 is a view taken on line 11-11 of Figure 10 showing the wheel drive.
Figure 12 is a view taken on line 12-12 o~
Figure 10 showing the belt drive assembly.
Before explaining at least one embodiment o~
~5 the invention in detail it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the ~ollowing description or illustrated in the drawings. The invention is capable of other embodiments or being practiced or carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein is ~or the purposes of description and should not be regarded as limiting.
:
DETAILED_DESC IPTION OF THE PREFERRED ~MBODTMENTS
The snow cycle 10 according to the present invention utilizes a bicycle frame 12 in the form o~ a parallelogram having a tubular steering support column 14, a tubular seat support column 16, a tubular pedal axle support column 18, and a tubular cross bar 20. The cross bar 20 is connected at one end to the steering column 14 and at the other end to the seat support column . .
16. The axl~e support column 18 is connected at the upper ~ end to the steering support column 14 and at the lower :' f ~ iJ ~
end to the pedal axle housing 22. The seat support column 16 is connected to the axle housing 22. A
handlebar 24 is connected to a front fork 25 which is mounted in the steering column 14. A rear axle housing 26 is supported at the rear of the frame 12 by a rear fork 28 connected to the pedal axle housing 22. A pair of diverging tubular support members 30 are connected to the seat support column 16 and to the axle housing 26.
pedal crank 32 is mounted or rotary motion in housing 22 to drive a sprocket 34. A rear wheel axle 36 is mounted in rear axle housing 26. The multiple speed derailleur 38 is left on the rear axle 36.
In accordance with the invention, the belt drive assembly includes a front ski attachment 40 secured to the steering fork 25 and a drive disc 42 mounted on the rear axle 36. A belt drive attachment 44 is secured to the frame 12 by means of a pair of front brackets 46 and a pair of rear support brackets 48. The front bracket~ 46 are secured to column 18 by cap 47. The rear brackets 48 are secured to the rear forks 28 by caps 49.
The sprocket 34 is connected to the derailleur 38 by means of a chain 45 which is used to drive the drive disc 42 in a conventional manner.
The drive disc 42 can be formed o~ various material such as a plastic or metal having a thickne~s corresponding to the width of the wheel rim. With this arrangement, the standard caliper brake 51 used on the bicycle can be left on the frame 12 in a position to engage the drive disc 42 and can be operated from the handgrip 27 on the handlebar.
The front ski attachment 40 as seen in Figure 3 includes a pair of skis 50 pivotally mounted to the ends ; of vertical frame members 52 by means of pins 54. The frame members are interconnected by a crossbar 56. Each frame member includes a channel 58 at the upper end which : :
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matingly engages the back of the fork ~5. The ~rame members are secured to the for]k 25 by the front axle 62 which passes through the axle ~hub in the front fork 25.
The belt drive attachment 44 as shown in Figure 2 includes a pan 70 in the form of a "U" having an elongate base 71 a pair of sid~e walls 73 and flanges 72 extending horizontally outwardly from each of the side walls 73 of the shaped pan. The front portion "A" of the pan 70 is angled upwardly from the rear portion "B" to engage any irregular surfaces, drifts or depressions, in the sur~ace o~ the snow. A pair o~ belts 74 are supported on the sides of pan 70 by means of pulley assemblies 76 and 78 which are journalled for rotation in the front and back of pan 70. The base 71 of the pan 70 should be spaced upwardly from the belts 74 so that it does not ride on the snow except to provide additional support in so~t snow. The pulley assembly 76 includes a shaft 80 which is journalled in the pan 70 at the forward or front end of the assembly and a pair of pulleys 82.
The rear pulley assembly 78 includes a shaft 84 which is journalled in the back of pan 70 and a pair of pulleys 86.
A set of idler roll assemblies 88 are mounted on each sidP of the pan to guide the belts 74 around the ~ront portion "A" and rear portion "B" of the pan 70.
Each idler assembly includes two pair of rollers 90 mounted on axles 92 which bear against the top of the upper belt 74, and a single pair of idler rolls 94 mounted on axles 96 is provided on the upper surface of the lower belt 74. Guide rollers 75 are provided along each side of the pan to maintain the belts 74 in engagement with the snow.
The belts 74 are driven by means of a drive gear assembly 98 mounted in pan 70. The gear assembly 98 connects the drive disc gear 42 to the rear pulley : :. .:: , , .:
assembly 7~. The gear assembly 98 includes a pinion gear lO0 mounted on shaft 84 which is driven by means of a drive gear 104 mounted on a shaft 106 in pan 70. A
cogwheel 108 is mounted on the shaft 106 in a position to engage and support the drive disc 42. The cogwheel 108 and pulley 86 have the same diameter. The drive disc 42 can be supported in the pan 70 by means of an idler gear 65 provided in the front of disc 42. A direct drive could also be used to rotate the belts if desired. With this arrangement the gear assembly could be eliminated, by connecting the drive di~sc directly to the gear 100 via a belt or chain.
A modified snow aycle 110 as shown in Figures 7-12 utilizes a bicycle frame 112 of the type shown in Figure 1. The ~rame generally includes a tubular steering support column ~14, a tubular support seat column 116 and a tubular pedal axle support column 118 and a tubular cross bar 120. Cross bar 120 is connected at one end to the steering column 114 at the other end to the seat supp~rt column 116. The axle support column 118 is connected at the upper end to the steering support column 114 and at the lower end to the pedal axle housing 122.
The seat support column 116 is connected to the axle housing 122. The handle bar 124 is connected to the front fork 125 which is mounted in the steering column 114. A rear axle housing 126 is supported at the rear of the frame 112 by a rear fork 128 connected to the pedal axle housing 122. A pair of diverging tubular support members 130 are connected to the seat support column 116 and to the axle housing 1~6. The pedal crank 132 is mounted for rotary motion in housing 122 to drive a sprocket 134. A rear axle 136 is mounted in the rear axle housing 126. A multiple speed derailer 138 may be provided on the rear axle 136.
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In accordance with the invention the modified front ski attachment 140 is secured to the steering fork 1250 Referring to Figure 8 the front ski attachment 140 includes a single ski 150 pivol:ally mounted to the ends of vertical frame members 152. The ski includes a leaf spring 154 which is connected t;o the ski by pins 156 and to the frame members 152 by a pin 158. The frame members 152 are connected by cross members 160 and are secured to the front fork by pins 162 which pass through the holes 164 in the frame member.
The modified belt drive attachment 144 as shown in Figure 9 incLudes a pan 170 having a elongated base 172 and a pair of sidewalls 173. The pan is clased on the front by a wall 174 which angles upwardly from the pan 172 and a rear wall 175. A pair of belts 176 are supported on the sides of the pan 170 by means of pulley assemblies 178 and 180. The base 172 of the pan 170 should be spaced upwardly from the belts 176 so that it does not ride on the snow except to provide additional support in so~t snow. The pulley assemblies 178 and 180 each include a shaft 181 which are mounted in the front and back of the pan 170 and a pair of pulleys 182 mounted on the end of each o~ the shafts 181. Each of the drive pulleys 182 includes a cog wheel 184 having teeth 186 which matingly engage corresponding rectangular openings 188 in each of the belts 176.
The belts 176 are driven by means of drive gear assemblies 198 mounted in the pan 170. Each drive gear ; assembly 198 includes a pinion gear 200 mounted on the shaft 181 which is driven by means of a drive gear 204 mounted on a shaft 206 in the pan 170. A cog whePl 208 is mounted on each of the shafts 206. The belt drive attachment 144 is mounted on the rear axle 136 by means of a pair of triangular shaped supports 210 connected to the side wal;Ls 173 of pan 170.
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The belt drive attachment 144 is driven by means of a drive wheel assembly 142 which includes the rear bicycle wheel 146 and a cog type timing belt 1~8.
In this regard, the timing belt 148 replaces the tire on the wheel 146. The timing belt can take a number of forms one of which would be a "tire" which has been molded with ~ogs similar to the cogs of the timing belt 148. This advantageously provides a much lighter drive wheel at lower cost and eliminates the requirement oP
removing the bicycle wheel and substituting a cog wheel.
The tire can also be in the form of an inflatable type belt 148 which can be inflated to hold it in place on the wheel. The timing belt 148 will ride on the cog wheels 208 thus providing drive for the belts at both the front and the back o~ the belt drive attachment 144.
The drive means could also take the form of a double chain drive. In this regard, the rear wheel of the bicycle is removed and a wheel sprocket is mounted on the rear axle which is driven by the bicycle chain. A
drive sprocket is mounted on the rear axle on each side of the wheel sprocket. The drive sprockets are then connected to the cog wheels 208 by chains. Although two drive sprockets are described, a single sprocket could also be usedO It is also within the contemplation of the invention to use belts in place of chains. Pulleys would be substituted for the cog wheels 208 and drive sprockets.
A pair of idler rolls 220 are provided on the drive belt attachment 144 to take up the slack and maintain the belt's tension. In this regard each o~
idler rolls 211 is mounted on a pivot arm 212 which is pivotally connected to the pan and biased by means of springs 214 into engagement with the belt.
Thus, it should be apparent that there has been provided in accordance with the present invention a snow cycle attachment for a bicycle frame that fully satisfies : : ~ . .: . - : - ~., .,,: . :. . "
the aims and advantages set forth above. Although the invention has been described in conjunction with specific embodiments thereof, it is eviclent that many alternatives, modifications ancl variations will be apparenk to those skilled in the art. Accordingly, it is intended to embrace all such a]ternatives, modi~ications and variations that ~all within the spirit and broad scope of the appended claims.
Claims (20)
1. A snow cycle assembly for a bicycle frame including a handle assembly, a seat, a rear axle and a sprocket drive assembly operatively connected to the rear axle, said assembly comprising:
a ski assembly attached to the handle assembly, a belt drive assembly mounted on the frame below the rear axle assembly, and a drive gear mounted on the rear axle and being operatively connected to the sprocket drive assembly, a year assembly for connecting said drive gear to said belt drive assembly and an idler gear for supporting said drive gear, whereby rotation of the drive gear will drive said belt drive assembly.
a ski assembly attached to the handle assembly, a belt drive assembly mounted on the frame below the rear axle assembly, and a drive gear mounted on the rear axle and being operatively connected to the sprocket drive assembly, a year assembly for connecting said drive gear to said belt drive assembly and an idler gear for supporting said drive gear, whereby rotation of the drive gear will drive said belt drive assembly.
2. The assembly according to claim 1 wherein said belt drive assembly includes a channel member, a pair of pulleys mounted for rotary motion at each end of said channel member, a pair of belts mounted on said pulleys for supporting the bicycle frame on snow and said drive gear being connected to one pair of said pulleys whereby rotary motion of said drive gear is transferred through said gear assembly to said belts.
3. The assembly according to claim 2 wherein said gear assembly includes a pinion gear connected to said one pair of pulleys and gear means for transferring the rotary motion of said drive gear to said pinion gear.
4. The assembly according to claim 3 including an idler gear in said channel member for supporting said drive gear.
5. The assembly according to claim 4 including a number of support rollers on the outside of said channel member for maintaining said belts in engagement with the snow.
6. The assembly according to claim 5 wherein said channel member includes a front portion and a rear portion, said front portion angled upwardly from said rear portion for engaging irregular snow surfaces.
7. The assembly according to claim 6 wherein said other of said pair of pulleys is located at the upper end of said front portion for supporting said belts for rotation on each side of said front portion.
8. The assembly according to claim 7 including a set of idler rolls mounted on each side of said channel member at the intersection of said front portion with said rear portion to guide said belts along the sides of the channel member.
9. A snow cycle assembly for converting a mountain bicycle frame to a snow cycle, the frame generally including a handle assembly, a seat, a rear axle and a pedal driven sprocket drive assembly, said kit comprising:
a dual ski assembly mounted on said handle assembly, a drive disc mounted on the rear axle and operatively connected to the sprocket drive assembly, a dual belt drive assembly mounted on the frame below said drive disc, said belt drive assembly includes a pan having an elongate base, a side wall on each side of said base, a pulley assembly mounted at each end of said side walls and a belt supported on said pulley assemblies on each side of said pan, and means for connecting said drive disc to said dual belt drive assembly whereby said belt drive assembly can be driven by the sprocket drive assembly.
a dual ski assembly mounted on said handle assembly, a drive disc mounted on the rear axle and operatively connected to the sprocket drive assembly, a dual belt drive assembly mounted on the frame below said drive disc, said belt drive assembly includes a pan having an elongate base, a side wall on each side of said base, a pulley assembly mounted at each end of said side walls and a belt supported on said pulley assemblies on each side of said pan, and means for connecting said drive disc to said dual belt drive assembly whereby said belt drive assembly can be driven by the sprocket drive assembly.
10. The assembly according to claim 9 wherein said connecting means includes a pinion gear on one of said pulley assemblies, a drive gear mounted in said pan in operative engagement with said pinion gear and a cogwheel connected to said drive disc and said drive gear.
11. The assembly according to claim 9 including a number of support rollers on each side of said pan for guiding the belts along each side of said pan.
12. The assembly according to claim 9 wherein said pan includes a first portion and a second portion, said first portion being angled upwardly from said second portion and a set of idle rolls on each side of said pan at the intersection of said first portion with said second portion for guiding said belts around the intersection of said first portion with the second portion.
13. A snow cycle assembly for a bicycle frame including a handle assembly, a seat, a rear axle, a rear wheel mounted on the rear axle, and a sprocket drive assembly operatively connected to drive the rear wheel on the rear axle, said assembly comprising:
a ski assembly attached to the handle assembly, a belt drive assembly mounted on the frame below the rear wheel assembly, said belt drive assembly includes a channel member, a pair of pulleys mounted for rotary motion at each end of said channel member, a pair of belts mounted on said pulleys on said channel member for supporting the bicycle frame on snow and a gear assembly at each end of said channel member for connecting said drive means to each of said pair of pulleys whereby rotary motion of said rear wheel is transfered through said gear assemblies to said belts, and drive means mounted on the rear wheel and being operatively connected to said belt drive assembly, whereby rotation of the rear wheel will drive said belt drive attachment.
a ski assembly attached to the handle assembly, a belt drive assembly mounted on the frame below the rear wheel assembly, said belt drive assembly includes a channel member, a pair of pulleys mounted for rotary motion at each end of said channel member, a pair of belts mounted on said pulleys on said channel member for supporting the bicycle frame on snow and a gear assembly at each end of said channel member for connecting said drive means to each of said pair of pulleys whereby rotary motion of said rear wheel is transfered through said gear assemblies to said belts, and drive means mounted on the rear wheel and being operatively connected to said belt drive assembly, whereby rotation of the rear wheel will drive said belt drive attachment.
14. The assembly according to claim 13 wherein each of said gear assemblies includes a pinion gear connected to one pair of said pulleys and gear means for transferring the rotary motion of said drive means to said pinion gears.
15. The assembly according to claim 14 including an idler roll on each side of said channel member for engaging the top of said belts to maintain tension in said belts.
16. The assembly according to claim 15 wherein said drive means includes a timing belt mounted on said wheel.
17. A snow cycle assembly for converting a bicycle frame to a snow cycle, the frame generally including a handle assembly, a seat, a rear axle and a pedal driven sprocket drive assembly operatively connected to said rear axle, said kit comprising:
a ski assembly mounted on said handle assembly, drive means mounted on the rear axle, a dual belt drive assembly mounted on the frame below the rear axle, said belt drive assembly includes a pan having an elongate base, a side wall on each side of said base, a pulley assembly mounted at each end of said side walls and a belt supported on said pulley assemblies on each side of said pan, and means for connecting said drive means to said dual belt drive assembly whereby said belt drive assembly can be driven by the sprocket drive assembly.
a ski assembly mounted on said handle assembly, drive means mounted on the rear axle, a dual belt drive assembly mounted on the frame below the rear axle, said belt drive assembly includes a pan having an elongate base, a side wall on each side of said base, a pulley assembly mounted at each end of said side walls and a belt supported on said pulley assemblies on each side of said pan, and means for connecting said drive means to said dual belt drive assembly whereby said belt drive assembly can be driven by the sprocket drive assembly.
18. The assembly according to claim 17 wherein said connecting means includes a pinion gear on each of said pulley assemblies, a drive gear mounted at each end of said pan in operative engagement with said pinion gear, and a cog wheel connected to said drive gear, said drive means includes a wheel mounted on said rear axle and a timing belt mounted on said wheel and positioned to engage said drive gear.
19. The assembly according to claim 17 wherein said connecting means includes a drive gear assembly operatively connected to each of said pulley assemblies;
and said drive means comprises a sprocket mounted on the rear axle, a pair of drive sprockets mounted on the rear axle and a chain connecting each of said drive sprockets to one of said drive gear assemblies.
and said drive means comprises a sprocket mounted on the rear axle, a pair of drive sprockets mounted on the rear axle and a chain connecting each of said drive sprockets to one of said drive gear assemblies.
20. The assembly according to claim 17 wherein said drive means comprises a drive pulley mounted on said axle and said connecting means comprises a belt connecting said drive pulley to one of said pulley assemblies in said pan.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58351090A | 1990-09-17 | 1990-09-17 | |
| US07/583,510 | 1990-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2051316A1 true CA2051316A1 (en) | 1992-03-18 |
Family
ID=24333395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2051316 Abandoned CA2051316A1 (en) | 1990-09-17 | 1991-09-13 | Snow cycle attachment for bicycle frame |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2051316A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774778A (en) * | 2019-02-02 | 2019-05-21 | 哈尔滨体育学院 | Propulsion device is slided in a kind of winter sports |
| CN109910296A (en) * | 2019-04-09 | 2019-06-21 | 苏州慧通汇创科技有限公司 | A kind of DLP laser fast shaping 3D printer platform convenient for manipulation |
-
1991
- 1991-09-13 CA CA 2051316 patent/CA2051316A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774778A (en) * | 2019-02-02 | 2019-05-21 | 哈尔滨体育学院 | Propulsion device is slided in a kind of winter sports |
| CN109774778B (en) * | 2019-02-02 | 2021-06-04 | 哈尔滨体育学院 | Sliding propulsion device for ice and snow movement |
| CN109910296A (en) * | 2019-04-09 | 2019-06-21 | 苏州慧通汇创科技有限公司 | A kind of DLP laser fast shaping 3D printer platform convenient for manipulation |
| CN109910296B (en) * | 2019-04-09 | 2024-05-03 | 苏州慧通汇创科技有限公司 | DLP laser rapid prototyping 3D printer platform convenient to control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |