Patent ID: 8876135
Filing Date: 2014-11-04
Classification: B62M

Abstract:
1. A combined-drive bicycle comprising: a handle assembly configured to steer a front wheel, the handle assembly comprising a crank handle to generate a handle motive force and a first gear rotated by a rotation of the crank handle; a pedal assembly configured to transmit the handle motive force and a pedal motive force generated by pedals to a rear wheel selectively or simultaneously; and a motive force transmission part to transmit the handle motive force to the pedal assembly, irrelevant to a steering of the handle assembly, wherein the motive force transmission part comprises, a second gear engaged with the first gear and rotatable with the first gear, the second gear movable with a handle stem with respect to a bicycle frame when the handle assembly is steered; a first power transmission member rotatable, with a variable length based on the movement of the second gear; and a lower shaft configured to transmit the rotational force of the first power transmission member to the pedal assembly.