A bicycle driven by pedal rotation and reciprocating seat...

A forced speed changing apparatus of bicycle

A forward-drive apparatus for a bicycle

A frame mounted handlebar having a driving pivot axis...

A human powered vehicle with single lever for folding and...

A method and system for computer-controlled gear shifting

A method of motion transmission and a wheeled vehicle driven...

A passenger vehicle

A push and pull vehicle by stand-and-sit action

A simple, compact and effective self-extending and...

A steering mechanism for a push and pull vehicle

A system and a method for the control of variable-ratio...

A transmission reduction system with clutch means for a...

Adjustable crank arms for elliptical bike and method of use

Adjustable pantograph suited for a double action pedal assembly

Adjustable pedal crank system for foot propelled vehicles

Air intake opening of air cleaner in motorcycle

Alternating drive for wheeled vehicles

Alternating drive, primarily for bicycles and similar driven...

Ambulatory wheelstand