This patent discloses compact size drive mechanism for bikes and reverse trikes. Drive mechanism comprises a pair of drive assemblies mounted on the ends of the hub of the wheel. Each drive assembly comprises a special type of planetary gearbox in which plurality of planetary gears and a gear ring are arranged in such a way that gear ring can be rotated via pedal which in turn rotates planetary gears. Hub of the wheel at each end is coaxially connected to a planetary gear of the gearbox via one way ratchet ball bearing. Planetary gear on rotation rotates the wheel. Larger radius of the gear ring than planetary gears accounts for gear ratio. Drive mechanism doesn't come in contact with clothing of the rider. Specially designed rear wheel support system secures the wheel to the frame, provides reinforcement to drive assembly position and is aligned to promote forward motion.
REAR WHEEL MOUNTED DRIVE MECHANISM FOR BICYCLES AND REVERSE TRIKES
2020-12-17
Patent
Electronic Resource
English
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