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Application filed by Yen-Muh HsuehfiledCriticalYen-Muh Hsueh
Priority to TW095101818ApriorityCriticalpatent/TW200728138A/en
Publication of TW200728138ApublicationCriticalpatent/TW200728138A/en
A pinion/spur gear device of seesaw bike is disclosed, wherein a pinion gear (left) and a spur gear (or a rod with the same tooth diameter) (right) are fixed on both ends of the shaft base. A set of synchronous gears is constructed and installed above the axial center of the rear wheel. For the synchronous shaft gear, the top of its left gear is fixed onto the link rod and the transmission arm, the bottom of the right spur gear is fixed onto the link rod and the transmission arm, and then the left and right transmission arms are extended to the position for both feet to step on.
Bicycle drive system has drive mechanism operated by arms and legs or solely by arms and used for rotation of steered front wheel via crank shaft and gear ratio mechanism