VARIABLE PEDAL DRIVING DEVICE OF BICYCLE

摘要

PCT No. PCT/KR97/00284 Sec. 371 Date Sep. 4, 1998 Sec. 102(e) Date Sep. 4, 1998 PCT Filed Dec. 31, 1997 PCT Pub. No. WO98/29295 PCT Pub. Date Jul. 9, 1998A variable pedal driving device for a bicycle, the device allowing the bicycle pedals to slide along crankshafts during operation of the device. Each pedal is coupled to a slide pipe slidably mounted on a crankshaft. The slide pipe is in turn connected to an eccentric member mounted on the main shaft of the driving device. When a pedal is driven in a forward direction, the eccentric member causes the pedal to extend out to a maximum distance from the main shaft, for more efficient driving of the bicycle.