Two wheel drive for a motorcycle
OwnerJames W. Hollingsworthinventor
Life of this patent
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Abstract
A motorcycle where the rear wheel of the motorcycle is not only driven but the front wheel is also driven. Power for the motor of the motorcycle is transmitted to a power transmitting joint which includes an output shaft. The power transmitting joint is mounted directly below the steering stem and on the steering axis of the motorcycle. The power to the front wheel is supplied through a chain which connects between the steering assembly and the front wheel with the chain being movable in conjunction with the front wheel when the front wheel is steered and with suspension movement as when bumps are encountered.
Claims8
In combination with a motorcycle which has a front wheel and a rear wheel mounted on a frame, said frame including a steering plate assembly that includes a steering stem which has a longitudinal center axis known as the steering axis, a handlebar assembly is mounted on said steering plate and stem assembly with pivoting occurring about said longitudinal center axis, said handlebar assembly for turning of said front wheel within a horizontal steering angle which will steer said motorcycle to a leftward direction and to a rightward direction, a fork assembly connected between said steering plate and stem assembly and said front wheel, the improvement comprising:
- a singular power transmitting joint mounted on said frame, said power transmitting joint to receive power from a motorcycle motor, said power transmitting joint having an output shaft, said output shaft being connected to said steering plate and stem assembly, a joint housing having an internal chamber, said joint housing connected to said output shaft, an annular series of balls located within said internal chamber and drivingly connected to said joint housing, said balls connecting with said output shaft, said joint housing to be rotated by power from said motor, said power transmitting joint being mounted directly adjacent said steering stem, whereby not only will power be transmitted from said motor to said rear wheel but also said front wheel;
- and
- a continuous chain connected between said front wheel and said power transmitting joint to cause driving rotation of said front wheel.
In combination with a motorcycle which has a front wheel and a rear wheel mounted on a frame, said frame including a steering stem which has a longitudinal center axis known as the steering axis, a handlebar assembly pivotally mounted on said steering stem with pivoting occurring about said longitudinal center axis, said handlebar assembly for turning of said front wheel through a horizontal steering angle which will steer said motorcycle in a leftward direction or in a rightward direction, a fork assembly connected between said steering stem and said front wheel, the improvement comprising:
- a singular power transmitting joint mounted on said frame, said power transmitting joint to transmit power from a motor of said motorcycle to said front wheel, said power transmitting joint having an output shaft, said output shaft attached to said handlebar assembly, said handlebar assembly being movable horizontally through a sufficient angle to affect steering of said motorcycle, said power transmitting joint located directly adjacent said handlebar assembly.
Dependencies are inferred from the claim text.