WO1988009739A1 - Motorcycle - Google Patents

Motorcycle Download PDF

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Publication number
WO1988009739A1
WO1988009739A1 PCT/GB1988/000432 GB8800432W WO8809739A1 WO 1988009739 A1 WO1988009739 A1 WO 1988009739A1 GB 8800432 W GB8800432 W GB 8800432W WO 8809739 A1 WO8809739 A1 WO 8809739A1
Authority
WO
WIPO (PCT)
Prior art keywords
front wheel
axis
arm
motorcycle
arms
Prior art date
Application number
PCT/GB1988/000432
Other languages
French (fr)
Inventor
Christopher David George Watts
Original Assignee
Christopher David George Watts
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB878713129A external-priority patent/GB8713129D0/en
Priority claimed from GB878727900A external-priority patent/GB8727900D0/en
Application filed by Christopher David George Watts filed Critical Christopher David George Watts
Publication of WO1988009739A1 publication Critical patent/WO1988009739A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/12—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg
    • B62K25/14—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg
    • B62K25/16—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg for front wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M23/00—Transmissions characterised by use of other elements; Other transmissions

Definitions

  • This invention relates to a motorcycle, and in the preferred embodiment provides a motorcycle which has front and rear wheels which are driven from a common engine.
  • a motorcycle comprising: a source of rotary power; and drive means coupling the front and rear wheels of the motorcycle to the source of rotary power, wherein the drive means incorporates a one way drive device whereby one wheel may turn faster than the rotational speed imposed upon it by the drive means.
  • the one way drive device permits the front wheel of the motorcycle to turn at a rotational speed greater than the rotational speed imposed upon it by the drive means.
  • This arrangement permits differential rotation of the front and rear wheels as necessitated by, for example, steering of the motorcycle.
  • the one way drive device is in the form of a sprag clutch which allows the front wheel to over-run the rear wheel when necessary.
  • the drive means comprises a constant velocity joint mounted on or adjacent the steering head of the motorcycle in such a way that the input of the CV joint is constrained to rotate about an axis fixed relative to the motorcycle frame, and the output of the CV joint is constrained to rotate about an axis fixed relative to the front forks. In this manner, drive can be transmitted to the front wheel without substantially interfering with the steering action of the motorcycle.
  • drive from the CV joint to the front wheel is via an idler gear which is mounted at the juncture of two pivotally connected arms, the first arm being constrained at the end remote from the idler gear to pivot about the axis of the output shaft of the CV joint, and the second arm being constrained to pivot at the end thereof remote from the idler gear about the axis of rotation of the front wheel.
  • the motorcycle includes a front suspension assembly mounted on the frame for pivotal movement about a steering axis, the front suspension assembly comprising: a first arm which extends from adjacent the steering axis downwardly and rearwardly to a point to the rear of the front wheel; second and third arms connected to the lower end of the first arm for pivotal movement about a common pivot axis, the second and third arms extending along respective sides of the front wheel from the pivot axis to the axis of rotation of the front wheel where they are rotatably connected to the front wheel to support the front wheel in use; and a linkage interconnecting the second and third arms with the first arm, said linkage including a resiliently deformable member which resiliently opposes upward movement of the front wheel relative to the chassis and means constraining the second and third arms to move conjointly as the front wheel moves up and down relative to the chassis in use whereby the axis of rotation of the wheel at all times remains parallel to the p vot axis.
  • the front arm preferably comprises two rigidly interconnected members spaced apart one on either side of the longitudinal central plane of the front wheel.
  • the linkage may then comprise a wishbone pivotally connected to the members of the first arm to provide a pair of forwardly extending legs having terminal ends which respectively overlie the second and third arms, and a single rearwardly extending leg.
  • Each forwardly extending leg is connected to the one of the second and third arms which it overlies by a rigid strut, and the rearwardly extending leg is coupled to the lower end of the first arm by a spring damper.
  • This arrangement has the advantage that the characteristics of the suspension may readily be varied by altering the length of the struts, and/or the position of the interconnection between the struts and the second and third arms.
  • first arm comprising spaced apart members
  • a wishbone as described above enables the periphery of the wheel to enter the zone between the members of the first arm in the extreme upper position of the front wheel, thereby enabling a relatively compact arrangement to provide substantial front wheel travel.
  • Figure 1 is a schematic side view of a preferred embodiment of the invention
  • Figure 2 is a schematic front view of part of the embodiment of Figure 1 ;
  • Figure 3 illustrates schematically a side view of a portion of a second embodiment of the invention.
  • Figure 4 is a view in the direction of the arrow IV of Figure 1 , with the wheel partly broken away in the interests of clarity.
  • the motorcycle 1 illustrated comprises a frame 2, rear wheel 3, and front wheel 4.
  • An engine and transmission assembly 5 is mount on the frame in conventional manner and includes an output sprocket 6 which drives the rear wheel 3 via a chain 7 in conventional manner.
  • a second chain 8 is driven from the sprocket 6 and in turn drives a sprag clutch 9.
  • the output of the sprag clutch 9 drives a chain 10 which in turn drives the input shaft 11 of a constant velocity joint 12.
  • the input shaft 11 is mounted in a manner which permits it to rotate only about an axis which is fixed relative to the chassis 2.
  • the pivotal axis 13 of the constant velocity joint is located on the axis of the steering head, and the output shaft 14 of the constant velocity joint is constrained to rotate about an axis which is fixed relative to the front forks of the motorcycle.
  • a sprocket is mounted on the output shaft 14 and drives a chain 15 which in turn drives an idler wheel 16 mounted at the apex of two articulated arms 17,18.
  • the end of the arm 17 remote from the idler wheel 16 pivots about the axis of the output shaft 1
  • the end of the arm 18 remote from the idler wheel 16 pivots about the axis of rotation 19 of the front wheel 4.
  • the idler wheel 16 drives a sprocket 20 fast with the front wheel via a chain 21.
  • the bearings upon which the idler wheel 16 is mounted are contained in a variable eccentric mounting which enables the chains 15,21 to be tensioned.
  • the arrangement of the arms 17,18 enables the chain drive arrangement to accommodate the telescopic movement of the front wheel in conventional manner.
  • the motorcycle 101 comprises a chassis 102 defining a steering axis 103 about which the front suspension 104 is pivotally turned in use by means of conventional handle bars (not shown).
  • the front suspension assembly comprises a first arm 105 which extends from adjacent the pivot axis 103 downwardly and rearwardly to a point behind the front wheel 106 and substantially at the same horizontal level as the axis of rotation 107 of the front wheel, when the motorcycle is at a nominal loading.
  • the lower end 108 of the first arm defines a pivot axis 109 about which second and third arms 110,111 are pivotally mounted.
  • the front ends of the arms 110,111 are interconnected by the spindle 115 about which the front wheel rotates, and accordingly the arms 110,111 support the front wheel in use.
  • the first arm 105 comprises a pair of members 112,113 rigidly interconnected by plates 114 at the upper ends thereof, and by a suitable member (not shown) at the lower ends thereof.
  • the members 112,113 are spaced apart on either side of the central plane 116 of the front wheel 106.
  • a wishbone 117 is pivotally mounted via pivot pins 118,119 on the members 112,113 to provide a pair of forwardly extending legs 120,121 and a single rearwardly extending leg 122.
  • the legs 120,121 each terminate at a point vertically above one of the arms 110,111, and each arm 110 r 111 is connected to the overlying leg of the wishbone by a respective strut 123.
  • a combined spring and damper 124 of conventional design is located between the rearwardly extending leg 122 of the wishbone and the member which interconnects the lower ends of the members 112,113.
  • the characteristics of the suspension can be adjusted by varying the length of the struts 123 and/or the position of the point 126 along the arms 1l0 r 111 at which the struts 123 are connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

A motorcycle comprises an engine/transmission assembly (5) having an output sprocket (6) which is connected to the rear wheel (3) by a chain drive (7), and to the front wheel (4) via a train drive comprising a first chain (8), a sprag clutch (9), a second chain (10), a CV joint (12), a third chain (15), and a fourth chain (21). The sprag clutch (9) permits the front wheel to over run the rear wheel during steering, and the CV joint transfers drive from chassis mounted components to the front forks without interfering with the steering action of the motorcycle.

Description

MOTORCYCLE
This invention relates to a motorcycle, and in the preferred embodiment provides a motorcycle which has front and rear wheels which are driven from a common engine.
It is clear that off-the-road performance of high power motorcycles would be improved if both front and rear wheels were driven. However, there are two significant problems in obtaining this result. Firstly, there is no satisfactory simple mechanical system fcr transmitting drive power from the prime mover o the front wheel. Secondly, even if some means is devised for transmitting power from the prime mover to the front wheel, means must be provided to permit differential rotation of the front and rear wheels during cornering.
According to the present invention there is provided a motorcycle comprising: a source of rotary power; and drive means coupling the front and rear wheels of the motorcycle to the source of rotary power, wherein the drive means incorporates a one way drive device whereby one wheel may turn faster than the rotational speed imposed upon it by the drive means.
Preferably, the one way drive device permits the front wheel of the motorcycle to turn at a rotational speed greater than the rotational speed imposed upon it by the drive means. This arrangement permits differential rotation of the front and rear wheels as necessitated by, for example, steering of the motorcycle.
Preferably, the one way drive device is in the form of a sprag clutch which allows the front wheel to over-run the rear wheel when necessary.
Preferably the drive means comprises a constant velocity joint mounted on or adjacent the steering head of the motorcycle in such a way that the input of the CV joint is constrained to rotate about an axis fixed relative to the motorcycle frame, and the output of the CV joint is constrained to rotate about an axis fixed relative to the front forks. In this manner, drive can be transmitted to the front wheel without substantially interfering with the steering action of the motorcycle.
In one embodiment of the invention drive from the CV joint to the front wheel is via an idler gear which is mounted at the juncture of two pivotally connected arms, the first arm being constrained at the end remote from the idler gear to pivot about the axis of the output shaft of the CV joint, and the second arm being constrained to pivot at the end thereof remote from the idler gear about the axis of rotation of the front wheel. This arrangement enables chain tension to be maintained without interfering with the telescopic suspension of the front wheel.
In a second embodiment of the invention, the motorcycle includes a front suspension assembly mounted on the frame for pivotal movement about a steering axis, the front suspension assembly comprising: a first arm which extends from adjacent the steering axis downwardly and rearwardly to a point to the rear of the front wheel; second and third arms connected to the lower end of the first arm for pivotal movement about a common pivot axis, the second and third arms extending along respective sides of the front wheel from the pivot axis to the axis of rotation of the front wheel where they are rotatably connected to the front wheel to support the front wheel in use; and a linkage interconnecting the second and third arms with the first arm, said linkage including a resiliently deformable member which resiliently opposes upward movement of the front wheel relative to the chassis and means constraining the second and third arms to move conjointly as the front wheel moves up and down relative to the chassis in use whereby the axis of rotation of the wheel at all times remains parallel to the p vot axis.
The front arm preferably comprises two rigidly interconnected members spaced apart one on either side of the longitudinal central plane of the front wheel. The linkage may then comprise a wishbone pivotally connected to the members of the first arm to provide a pair of forwardly extending legs having terminal ends which respectively overlie the second and third arms, and a single rearwardly extending leg. Each forwardly extending leg is connected to the one of the second and third arms which it overlies by a rigid strut, and the rearwardly extending leg is coupled to the lower end of the first arm by a spring damper. With this arrangement, vertical upward movements of the front wheel causes upward movement of the struts thereby pivoting the wishbone to produce downward movement of the rearwardly extending leg thereof to compress the spring damper.
This arrangement has the advantage that the characteristics of the suspension may readily be varied by altering the length of the struts, and/or the position of the interconnection between the struts and the second and third arms.
Further, the use of a first arm comprising spaced apart members, in combination with a wishbone as described above enables the periphery of the wheel to enter the zone between the members of the first arm in the extreme upper position of the front wheel, thereby enabling a relatively compact arrangement to provide substantial front wheel travel.
The invention will be better understood from the following description of a preferred embodiment, given by way of example only, reference being had to the accompanying drawings wherein:
Figure 1 is a schematic side view of a preferred embodiment of the invention;
Figure 2 is a schematic front view of part of the embodiment of Figure 1 ;
Figure 3 illustrates schematically a side view of a portion of a second embodiment of the invention; and
Figure 4 is a view in the direction of the arrow IV of Figure 1 , with the wheel partly broken away in the interests of clarity.
Referring to Figure 1 the motorcycle 1 illustrated comprises a frame 2, rear wheel 3, and front wheel 4. An engine and transmission assembly 5 is mount on the frame in conventional manner and includes an output sprocket 6 which drives the rear wheel 3 via a chain 7 in conventional manner. A second chain 8 is driven from the sprocket 6 and in turn drives a sprag clutch 9. The output of the sprag clutch 9 drives a chain 10 which in turn drives the input shaft 11 of a constant velocity joint 12. The input shaft 11 is mounted in a manner which permits it to rotate only about an axis which is fixed relative to the chassis 2.
The pivotal axis 13 of the constant velocity joint is located on the axis of the steering head, and the output shaft 14 of the constant velocity joint is constrained to rotate about an axis which is fixed relative to the front forks of the motorcycle. A sprocket is mounted on the output shaft 14 and drives a chain 15 which in turn drives an idler wheel 16 mounted at the apex of two articulated arms 17,18. The end of the arm 17 remote from the idler wheel 16 pivots about the axis of the output shaft 1 , and the end of the arm 18 remote from the idler wheel 16 pivots about the axis of rotation 19 of the front wheel 4. The idler wheel 16 drives a sprocket 20 fast with the front wheel via a chain 21.
The bearings upon which the idler wheel 16 is mounted are contained in a variable eccentric mounting which enables the chains 15,21 to be tensioned.
The arrangement of the arms 17,18 enables the chain drive arrangement to accommodate the telescopic movement of the front wheel in conventional manner.
Referring now to Figures 3 and 4, the motorcycle 101 comprises a chassis 102 defining a steering axis 103 about which the front suspension 104 is pivotally turned in use by means of conventional handle bars (not shown).
The front suspension assembly comprises a first arm 105 which extends from adjacent the pivot axis 103 downwardly and rearwardly to a point behind the front wheel 106 and substantially at the same horizontal level as the axis of rotation 107 of the front wheel, when the motorcycle is at a nominal loading.
The lower end 108 of the first arm defines a pivot axis 109 about which second and third arms 110,111 are pivotally mounted. The front ends of the arms 110,111 are interconnected by the spindle 115 about which the front wheel rotates, and accordingly the arms 110,111 support the front wheel in use.
Referring particularly to Figure 4, it will be seen that the first arm 105 comprises a pair of members 112,113 rigidly interconnected by plates 114 at the upper ends thereof, and by a suitable member (not shown) at the lower ends thereof. The members 112,113 are spaced apart on either side of the central plane 116 of the front wheel 106.
A wishbone 117 is pivotally mounted via pivot pins 118,119 on the members 112,113 to provide a pair of forwardly extending legs 120,121 and a single rearwardly extending leg 122. The legs 120,121 each terminate at a point vertically above one of the arms 110,111, and each arm 110r111 is connected to the overlying leg of the wishbone by a respective strut 123. A combined spring and damper 124 of conventional design is located between the rearwardly extending leg 122 of the wishbone and the member which interconnects the lower ends of the members 112,113.
In use, upward movement of the wheel 106 relative to the chassis is transferred via struts 123 to the wishbone 117 and causes pivotal movement of the wishbone which is resiliently opposed by the spring damper 124. The effect of the wishbone is to ensure that the arms 110,111 move conjointly in use so that the axis of rotation 107 of the front wheel always remains parallel to the pivot axis 109.
It will be noted that in the extreme upper position of the front wheel illustrated in broken line at 125 the periphery of the front wheel is able -co enter the space between the legs 120,121 of the wishbone 117 and the space provided between the members 112,113 of the first arm 115.
The characteristics of the suspension can be adjusted by varying the length of the struts 123 and/or the position of the point 126 along the arms 1l0r111 at which the struts 123 are connected.
Although of general utility the above described arrangement is particularly well suited to a motorcycle of which the front wheel is driven by a chain drive extending from a constant velocity joint 127 mounted on the first arm 105 immediately below the pivotal connection with the chassis. Drive for the CV is derived from a one way drive device, as in the embodiment of Figures 1 and 2. Drive can be taken from the constant velocity joint 127 via a first chain 128 to an idle sprocket 129 mounted to rotate about the pivot axis 109, and from the idle sprocket 129 via a second chain 130 to a drive sprocket 131 rotationally fast with the front wheel. It will be noted that with the above described suspension arrangement there is no change in length of the chains 128 or 130 as the front wheel moves up and down in use, and accordingly no arrangements need be provided to accommodate such changes of length.

Claims

1. A motorcycle comprising a source of rotary power and drive means coupling the front and rear wheels of the motorcycle to the source of rotary power characterized in that the drive means comprises a one way drive device (9) whereby one wheel (4) may turn faster than the rotational speed imposed upon it by the drive means.
2. A motorcycle according to claim 1 characterized in that the one way drive device (9) is a sprag clutch.
3. A motorcycle according to claim 1 and claim 2 characterized in that the drive means comprises a constant velocity joint (12) mounted on or adjacent the steering head of the motorcycle in such a way that the input (11) of the CV joint (12) is constrained to rotate about an axis fixed relative to the motorcycle frame and the output (14) of the CV joint is constrained to rotate about an axis fixed relative to the front forks.
4. A motorcycle according to claim 3 characterized in that drive from the CV joint (12) is taken by a chain (15) to an idle wheel (16) which is mounted at the juncture of two pivotally connected arms (17 18)/ the first arm (17) being constrained at the end remote from the idle gear (16) to pivot about the axis of the output shaft (14) of the CV joint, and the second arm (18) being constrained to pivot at the end thereof remote from the idle gear (16) about the axis of rotation (19) of the front wheel.
5. A motorcycle according to claim 3 or claim 4 characterized in that the drive means comprises a first chain (8) which drivingly connects an output sprocket of the source of rotary power to the sprag clutch, and a second chain (10) which connects the output of the sprag clutch to the input of the CV joint.
6. A motorcycle according to any preceding claim characterized in that the front suspension assembly comprises a first arm (105) which extends fro« adjacent the steering axis (103) downwardly and rearwardly to a point to the rear of the front wheel (106); second and third arms (110,111 ) connected to the lower end of the first arm (105) for pivotal movement about a common pivot axis (109), the second and third arms extending along respective sides of the front wheel (106) from the pivot axis (1£)9) to the axis (107) of rotation of the front wheel where they are rotatably connected to the front wheel to support the front wheel in use; and a linkage interconnecting the second and third arms with the first arm, said linkage including a resiliently deformable member (124)_which resiliently opposes upward movement of the front wheel relative to the chassis (102) and means constraining the second and third arms (110,111 ) to move conjointly as the front wheel moves up and down relative to the chassis (102) in use whereby the axis of rotation (107) of the front wheel at all times remains parallel to the pivot axis (109).
7. A motorcycle according to claim 6 wherein the first arm comprises two rigidly interconnected members (112,113) spaced apart one on either side of the longitudinal central plane (116) of the front wheel and the linkage comprises a wishbone (117) pivotally connected to the members (112,113) to provide a pair of forwardly extending legs (120,121) each of which is connected to one of the second and third arms (110,111) by a rigid strut, the rearwardly extending leg (112) of the wishbone being coupled to the lower end of the first arm by a spring damper.
PCT/GB1988/000432 1987-06-04 1988-06-02 Motorcycle WO1988009739A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8713129 1987-06-04
GB878713129A GB8713129D0 (en) 1987-06-04 1987-06-04 Motor-cycle
GB8727900 1987-11-28
GB878727900A GB8727900D0 (en) 1987-11-28 1987-11-28 Motor cycle

Publications (1)

Publication Number Publication Date
WO1988009739A1 true WO1988009739A1 (en) 1988-12-15

Family

ID=26292320

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1988/000432 WO1988009739A1 (en) 1987-06-04 1988-06-02 Motorcycle

Country Status (2)

Country Link
EP (1) EP0316395A1 (en)
WO (1) WO1988009739A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990011218A1 (en) * 1989-03-29 1990-10-04 Charron Jean Yves Device for driving the front wheel of a two-wheel drive motorcycle, and motorcycle associated
EP0405509A1 (en) * 1989-06-28 1991-01-02 Suzuki Kabushiki Kaisha Front and rear wheel drive motorcycle
US5014808A (en) * 1987-02-09 1991-05-14 Savard Frank J Two wheeled vehicle having an adjustable castor and castor angle
FR2656847A1 (en) * 1990-01-08 1991-07-12 Savard Franck Set of components to allow a bike to have two-wheel drive
FR2658152A1 (en) * 1990-02-15 1991-08-16 Biannic Jean Chistophe PROPULSION DEVICE FOR TWO - DRIVE BICYCLE AND BICYCLE PROVIDED WITH THIS DEVICE.
US5054572A (en) * 1990-06-20 1991-10-08 Parker James G Front wheel drive system for a motorcycle
EP0456250A1 (en) * 1990-05-10 1991-11-13 Lester John Erlston A two-wheel-drive two wheeled vehicle
US5324057A (en) * 1991-03-08 1994-06-28 Francois Chartrand Two-wheel drive cycle
US5894903A (en) * 1996-02-29 1999-04-20 Hieble; Siegfried Motorcycle with adjustable-power front wheel drive (all wheel drive)
FR2772681A1 (en) * 1997-12-22 1999-06-25 Cyrille Yves Rigo Kit to transform motor cycle from single wheel drive to two wheel drive,
US6820886B2 (en) 2001-04-19 2004-11-23 Roger David Scott Goldammer Modular butt-jointed yoke for motorcycles
WO2006106592A1 (en) * 2005-02-25 2006-10-12 Tokyo University Of Science Rotation transmission device and vehicle using the same
WO2010091336A2 (en) 2009-02-09 2010-08-12 Lawson Martin E All wheel drive motorcycle
CN102745298A (en) * 2012-07-11 2012-10-24 天津比沃科技有限公司 Centrally-mounted drive system of electric bicycle
WO2014165774A1 (en) * 2013-04-05 2014-10-09 Lawson Martin E All wheel drive motorcycle with enhanced soft terrain capabilities

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE228336C (en) *
DE1120300B (en) * 1956-06-21 1961-12-21 Auto Union Gmbh Front suspension for motorcycles
US3045772A (en) * 1959-02-17 1962-07-24 Theodore R Nicolai Drive for motor bikes
US3268025A (en) * 1963-08-20 1966-08-23 Nethercutt Ind Corp Motorcycle having two driven wheels
FR2579950A1 (en) * 1985-04-04 1986-10-10 Decouroux Robert Device for transmission to the front wheel for a motor bike with rear wheel drive or otherwise

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE228336C (en) *
DE1120300B (en) * 1956-06-21 1961-12-21 Auto Union Gmbh Front suspension for motorcycles
US3045772A (en) * 1959-02-17 1962-07-24 Theodore R Nicolai Drive for motor bikes
US3268025A (en) * 1963-08-20 1966-08-23 Nethercutt Ind Corp Motorcycle having two driven wheels
FR2579950A1 (en) * 1985-04-04 1986-10-10 Decouroux Robert Device for transmission to the front wheel for a motor bike with rear wheel drive or otherwise

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014808A (en) * 1987-02-09 1991-05-14 Savard Frank J Two wheeled vehicle having an adjustable castor and castor angle
FR2645107A1 (en) * 1989-03-29 1990-10-05 Savard Franck MOTORCYCLE WITH ONE OR TWO DRIVE WHEELS AND FRONT PENDULUM TELESCOPIC FORK
WO1990011218A1 (en) * 1989-03-29 1990-10-04 Charron Jean Yves Device for driving the front wheel of a two-wheel drive motorcycle, and motorcycle associated
AU622565B2 (en) * 1989-06-28 1992-04-09 Suzuki Jidosha Kogyo Kabushiki Kaisha Front and rear wheel drive motorcycle
EP0405509A1 (en) * 1989-06-28 1991-01-02 Suzuki Kabushiki Kaisha Front and rear wheel drive motorcycle
US5113964A (en) * 1989-06-28 1992-05-19 Suzuki Jidosha Kogyo Kabushiki Kaisha Front and rear wheel drive motorcycle
FR2656847A1 (en) * 1990-01-08 1991-07-12 Savard Franck Set of components to allow a bike to have two-wheel drive
FR2658152A1 (en) * 1990-02-15 1991-08-16 Biannic Jean Chistophe PROPULSION DEVICE FOR TWO - DRIVE BICYCLE AND BICYCLE PROVIDED WITH THIS DEVICE.
WO1991012167A1 (en) * 1990-02-15 1991-08-22 Biannic Jean Christophe Device for the propulsion of a two-wheel drive bike and bike so equipped
EP0456250A1 (en) * 1990-05-10 1991-11-13 Lester John Erlston A two-wheel-drive two wheeled vehicle
US5224725A (en) * 1990-05-10 1993-07-06 Erlston Lester J Two-wheeled-drive two wheeled vehicle
US5054572A (en) * 1990-06-20 1991-10-08 Parker James G Front wheel drive system for a motorcycle
US5324057A (en) * 1991-03-08 1994-06-28 Francois Chartrand Two-wheel drive cycle
US5894903A (en) * 1996-02-29 1999-04-20 Hieble; Siegfried Motorcycle with adjustable-power front wheel drive (all wheel drive)
FR2772681A1 (en) * 1997-12-22 1999-06-25 Cyrille Yves Rigo Kit to transform motor cycle from single wheel drive to two wheel drive,
WO1999032349A1 (en) * 1997-12-22 1999-07-01 Cyrille Rigo Device in the form of a kit for transforming a motorcycle with one drive wheel into a motorcycle with two drive wheels
US6820886B2 (en) 2001-04-19 2004-11-23 Roger David Scott Goldammer Modular butt-jointed yoke for motorcycles
WO2006106592A1 (en) * 2005-02-25 2006-10-12 Tokyo University Of Science Rotation transmission device and vehicle using the same
JP4863515B2 (en) * 2005-02-25 2012-01-25 学校法人東京理科大学 Rotation transmission device and vehicle using the same
EP2393705A4 (en) * 2009-02-09 2015-10-28 Martin E Lawson All wheel drive motorcycle
WO2010091336A2 (en) 2009-02-09 2010-08-12 Lawson Martin E All wheel drive motorcycle
CN102745298A (en) * 2012-07-11 2012-10-24 天津比沃科技有限公司 Centrally-mounted drive system of electric bicycle
CN102745298B (en) * 2012-07-11 2015-04-22 天津比沃科技有限公司 Centrally-mounted drive system of electric bicycle
WO2014165774A1 (en) * 2013-04-05 2014-10-09 Lawson Martin E All wheel drive motorcycle with enhanced soft terrain capabilities
EP2981453A1 (en) * 2013-04-05 2016-02-10 Martin E. Lawson All wheel drive motorcycle with enhanced soft terrain capabilities
US9315233B2 (en) 2013-04-05 2016-04-19 Martin E. Lawson All wheel drive motorcycle with enhanced soft terrain capabilities
EP2981453A4 (en) * 2013-04-05 2017-04-26 Martin E. Lawson All wheel drive motorcycle with enhanced soft terrain capabilities
US9828062B2 (en) 2013-04-05 2017-11-28 Martin E. Lawson All wheel drive motorcycle with enhanced soft terrain capabilities

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Publication number Publication date
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