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| Number | Title | Issue Date |
| 4415057 | Rear wheel damper device for motorcycle A rear wheel suspension device for a motorcycle has a support frame comprising side bars extending from a horizontal bearing cylinder and having a cross member fixed to the side bars to define an opening. An upright damper is pivoted to the main frame and... | 11/15/1983 |
| 4408674 | Motorcycle drive wheel suspension system A suspension system for the drive wheel of a motorcycle driven by a chain cooperating with sprockets on the engine and wheel shafts. The suspension system comprises a parallelogram linkage arrangement associated with the swing arm, with the linkage parts ... | 10/11/1983 |
| 4392536 | Vehicle A vehicle with at least one front wheel and two rear wheels comprises a rear cushion unit for use in damping repelling forces from the ground surface and other vibratory forces developed by chain driving and the like. The upper end of the rear cushion uni... | 07/12/1983 |
| 4378857 | Motor-cycle frame The main frame member of a motor-cycle mounts a steering head supporting the front fork, and at its rear end also a rear fork. Both forks are provided with shock absorbers and especially with motor-cycles suited for moto-cross running the movements of the... | 04/05/1983 |
| 4363375 | Motorcycle A shell structure adapted to accommodate a propelling power unit forms part of a vehicle frame. It is made of a thin sheet, and has no practical strength but is sufficiently reinforced with its opposite side sections firmly secured to the adjacent sides o... | 12/14/1982 |
| 4360214 | Shock absorbing device for rear wheel of motorcycle A shock absorbing device for a rear wheel of a motorcycle which comprises a rotary member which is pivotally connected to a body frame at its front end and moreover is pivotally connected to a swingable rear wheel support frame, a shock absorber which is ... | 11/23/1982 |
| 4356877 | Motorcycle There is disclosed a method of vehicle construction for improving the rate of production of two assemblies of a motorcycle. The two assemblies can be made simultaneously on separate assembly lines and connected together by placing the power unit in fittin... | 11/02/1982 |
| 4348016 | Process and device for suspension of vehicle wheels A process and apparatus for suspension of a vehicle wheel, particularly for motorcycles, mopeds and bicycles, the springs of which comprise an adjusting device. The process comprises the step of using a spring or springs having a neutralizable end part ad... | 09/07/1982 |
| 4327930 | Frame for two-wheeled vehicle A frame for a two-wheeled vehicle such as a motorcycle or a power-driven cycle or a bicycle which has a bifurcated rear portion that forms a chamber to receive a suspension member. The suspension member interlinks the frame and an upper portion of a rear ... | 05/04/1982 |
| 4325449 | All-terrain motorcycle attachment device An all-terrain motorcycle attachment device for attachment to a two-wheel motorcycle to convert the motorcycle to a three-wheel all-terrain vehicle is disclosed comprising a swingarm frame adapted for detachable connection to the swingarm pivot bolt assem... | 04/20/1982 |
| 4322088 | Rear wheel suspension for a motorcycle An improved rear wheel suspension for a motorcycle is provided which includes a body frame, a rear wheel support frame such as a rear fork pivotally mounted on the body frame for upward and downward movement relative thereto and rotatably supporting a rea... | 03/30/1982 |
| 4265330 | Motorcycle gear box and rear wheel suspension system A motor cycle which is suitable both for use as a trail machine and as road bike has an engine and gear box assembly which forms an integral part of the monocoque frame of the motor cycle. The gear box has an input shaft, an intermediate shaft and an outp... | 05/05/1981 |
| 4265329 | Frameless motorcycle A two-wheeled vehicle, such as a motor bicycle is constituted by three self-contained sub-assemblies which are linked to each other and which consist of a central sub-assembly comprising a motor and a gear-box, a front sub-assembly comprising the front wh... | 05/05/1981 |
| 4189168 | Wheel suspension system for a vehicle A wheel suspension system for two-wheeled vehicles such as motorcycles, bicycles, and the like, having a vehicle frame, a wheel assembly and a spring and shock absorber assembly. The wheel assembly includes an axle with a wheel rotatably disposed thereon.... | 02/19/1980 |
| 4175764 | Motorcycle wheel suspension device A wheel suspension device for attachment to the swing arm of a motorcycle with a pair of such devices serving to couple the lower ends of the motorcycle shock absorber units to the motorcycle swing arm. Each device includes a base on which is swingably mo... | 11/27/1979 |
| 4169512 | Power unit swinging type motor cycles A swinging power unit type motorcycle having an engine swingably hung and pivoted on a body frame, and a pair of plates forming a rear fork connected to the engine. A chain drive transmits power from the engine to a reduction gearbox which incorporates th... | 10/02/1979 |
| 4114918 | Suspension system for wheel of a motor bike The rear wheel of a bike is journaled in a pair of spaced, parallel plates, which are adjustably secured to the outer ends of two pairs of rigid suspension bars, the inner ends of which are mounted to pivot on a cycle frame about axes parallel to axes of ... | 09/19/1978 |
| 4091887 | Power unit for a motor cycle A power unit for a motor-cycle of a type having a power transmission case which supports at the rear end thereof a rear axle and which is integrally joined together at one end of a crank case of an engine, wherein the power transmission case is constitute... | 05/30/1978 |
| 4087109 | Motorcycle frame and suspension and methods of making and using the same A motorcycle frame and rear wheel suspension comprising a main frame in combination with a pivotally mounted and shock mounted rear frame and transition frame.... | 05/02/1978 |
| 4076271 | Vehicle wheel suspension device A vehicle wheel suspension device, for example for the rear wheel of a motor cycle, comprises a fork with two arms between which the wheel is mounted. The fork oscillates about its base and an intermediate solid serves as a base for buttressing connection... | 02/28/1978 |
| 4058181 | Motorcycle suspension systems An improvement in motorcycle frames having a generally closed configuration with generally horizontal upper and lower frame members and spaced generally front and rear vertical members transverse to and connecting said upper and lower members to form a cl... | 11/15/1977 |
| 4055229 | Frames for motorcycles The invention concerns a motorcycle in which the engine is mounted on the swinging arm to provide a rigid connection between the engine drive and the rear wheel hub. The swinging arm is pivoted to the motorcycle frame forwardly of the engine.... | 10/25/1977 |
| 4046396 | Heavy duty dirt bicycle and frame therefor A heavy duty off-pavement or dirt bicycle and frame therefor, includes a rear wheel frame portion having a metal alloy, tubular main frame member formed into a broad V-shape, a lower arcuate portion thereof being normally, in use, the lowest part of the f... | 09/06/1977 |
| 4039200 | Rear wheel suspension system for a motorcycle A suspension system for a motorcycle's rear wheel of the type in which that rear wheel is rotationally carried between two swing arms at one end of the swing arms, the moving arms being positioned on opposite sides of the rear wheel and being immobile rel... | 08/02/1977 |
| 4034821 | Motorcycle chain drive An improvement in a chain drive mechanism wherein a drive sprocket is connected to a spaced driven sprocket by an endless chain with the driven sprocket being pivoted on a swing arm about an axis intermediate the two sprockets. The improvement includes id... | 07/12/1977 |
| 4022484 | Motorcycle frame and suspension and methods of making and using the same A motorcycle frame and rear wheel suspension comprising a main frame in combination with a pivotally mounted and shock mounted rear frame and transition frame.... | 05/10/1977 |
| 4019594 | Motorized two-wheeled vehicle construction with power unit swing system A motorized two-wheeled vehicle construction having a power unit swing system comprising a vehicle body frame connecting a front head pipe to the lower surface of a seat unit for a driver, the rear side of the frame being provided with a curved lower elbo... | 04/26/1977 |
| 3984119 | Suspension for two-wheeled vehicle A suspension for two-wheeled vehicles is provided which may arbitrarily adjust its spring characteristics almost without changing the initial load applied to the suspension spring so that the optimum spring characteristics may be selected depending upon t... | 10/05/1976 |
| 3982770 | Bicycle suspension A bicycle suspension has a suspension frame unit and a shock absorber. The suspension frame unit comprises a pair of parallel triangular members each including a horizontal rear fork arm and a pair of inclined stays with their upper joined portion dispose... | 09/28/1976 |
| 3977697 | Long travel rear wheel suspension system for motorcycle A lever and stabilizer bar assembly, attached to the rear suspension system of a standard motorcycle, offsets the lower end of the rear shock from the standard lower shock mount on the swing arm. The leverage of the stabilizer bar and lever arm assembly i... | 08/31/1976 |
| 3974892 | Motorcycle rear wheel suspension An articulated, rear wheel motorcycle suspension system including two rocking arms, each pivotally mounted between its forward and rearward terminals to the vehicle main frame, in the vertical plane of, and approximately parallel to, a trailing arm of the... | 08/17/1976 |
| 3966006 | Dual spring rear suspension for motorcycles A rear suspension for motorcycles which employs primary and secondary torsion springs operating on the rotative axis of the horizontally disposed and rearwardly trailing fork carrying the powered traction wheel. The two springs are of selected resilience ... | 06/29/1976 |
| 3964765 | Bicycle A bicycle with a frame suspended on the wheels by telescoping shock absorbers that permit large vertical movements of the wheels when they hit bumps without producing large vertical movements of the bicycle frame, so that pedaling can continue uninterrupt... | 06/22/1976 |
| 3948543 | Motorcycle suspension system The invention comprises a suspension system for a motorcycle or the like wherein the rear wheel suspension spring is connected to the frame in such a manner that upward impacts received by the rear tire are reacted on the frame in a substantially horizont... | 04/06/1976 |
