Patent ID: 6454287
Filing Date: 2002-09-24
Classification: B62M

Abstract:
A bicycle, comprising:a frame; a front wheel rotatably arranged at a front side of said frame; a rear wheel rotatably arranged at a rear side of said frame; a rotating member carried on said frame; a driving force transmitting member associated with said rotating member for transmitting rotating force of said rotating member at least one of said front wheel and said rear wheel; a pair of pedal levers having a phase difference of 180Â° with respect to each other to oscillate alternatively up and down; a pedal operatively connected to one of said pair of pedal levers; a crank lever for transmitting force from said one of said pair of pedal levers to said rotating member; a sliding pin operatively connected to said one of said pair of pedal levers; a sliding part providing an oscillating fulcrum point for said one of said pair of pedal levers, said sliding part defining a path of travel for said sliding pin such that at least a portion of said path of travel of said sliding pin is not coincident with an axis formed by a line connecting a wheel shaft of said rear wheel with a shaft of said rotating member; wherein said sliding pin operatively slides within said sliding part as said one of said pair of pedal levers is oscillated, and force from the oscillation of said one said pair of pedal levers is transmitted to said rear wheel via said rotating member.