Patent ID: 6619682
Filing Date: 2003-09-16
Classification: B62K,B62M

Abstract:
An occupant propelled vehicle comprising:a frame, said frame including a front portion and a rear portion; a front wheel provided on said front portion of said frame; a rear wheel provided on said rear portion of said frame; a platform for supporting an occupant, said platform provided between said front and rear portions on said frame; a steering mechanism provided on said frame; and an oscillating drive mechanism comprising: a drive sprocket mounted on said frame so that said drive sprocket is positioned entirely above said platform, said drive sprocket having a central axis and an axle therethrough, said drive sprocket being rotatable with said axle; a driven sprocket rotatable with said rear wheel; a pedal crank arm, said pedal crank arm having a first end provided on said drive sprocket axle, and a second end having a pedal attached thereto; and an endless chain drivingly provided around said drive sprocket and said driven sprocket, wherein oscillation of said pedal and said crank arm rotates said drive sprocket and said rear wheel therewith and propels said occupant propelled vehicle in a forward direction; wherein said drive sprocket oscillates through an arc up to 220Â°.