Motorcycle with dual drive chains
AssigneeMotoCzysz LLC
InventorJoshua S. Bryan
Life of this patent
Estimating the term…
Abstract
A motorcycle having two drive chains. The gearbox output includes a left front sprocket and a right front sprocket. The rear wheel includes a left rear sprocket and a right rear sprocket. Left and right chains connect the respective front and rear sprockets. Power is transmitted to the rear wheel symmetrically. The swingarm is not subjected to asymmetric force that would twist it or pull it to one side, and can be made lighter. Swingarm flex can be better specified, making the swingarm a more useful suspension component, especially aiding the rear wheel while bent over in hard cornering over an irregular road surface.
Claims14
A motorcycle comprising:
- a frame;
- an engine coupled to the frame and including a gearbox;
- a left drive sprocket coupled to the gearbox at a left side of the motorcycle;
- a right drive sprocket coupled to the gearbox at a right side of the motorcycle;
- a laterally flexible swingarm coupled to one of the frame and the engine;
- a rear wheel coupled to the swingarm;
- a left driven sprocket coupled to the rear wheel at the left side of the motorcycle;
- a right driven sprocket coupled to the rear wheel at the right side of the motorcycle;
- a left chain coupling the left drive sprocket to the left driven sprocket;
- and
- a right chain coupling the right drive sprocket to the right driven sprocket;
- whereby chain-induced twist of the swingarm is reduced;
- and wherein
- the left chain passes through a hole extending through a left side of the swingarm;
- and
- the right chain passes through a hole extending through a right side of the swingarm.
A motorcycle comprising:
- a frame;
- an engine coupled to the frame and including a gearbox driven by the engine;
- a left drive sprocket coupled to a left side of the gearbox;
- a right drive sprocket coupled to a right side of the gearbox;
- a swingarm pivotably coupled to one of the frame and the engine;
- a rear wheel coupled to the swingarm;
- a left driven sprocket coupled to the rear wheel;
- a right driven sprocket coupled to the rear wheel;
- and
- a left flexible band counted to the left drive sprocket and the left driven sprocket;
- and
- a right flexible band coupled to the right drive sprocket and the right driven sprocket;
- wherein the left and right flexible bands pass through respective holes extending through the swingarm.
Dependencies are inferred from the claim text.