Land vehicles – Wheeled – Occupant propelled type
Patent
1989-06-09
1990-09-11
Marmor, Charles A.
Land vehicles
Wheeled
Occupant propelled type
280238, 280259, 280260, 475283, 475297, 475298, B62M 108, F16H 344
Patent
active
049556274
ABSTRACT:
A chainless drive for pedal powered tricycles features a pedal drive shaft located on the axis of the driving wheel and a five speed planetary transmission mounted concentric with the drive shaft and housed within the hub of the wheel. The transmission drives the wheel with a torque which is a multiple of the pedal torque for the two lowest speeds, provides a direct drive for the third speed, and drives the wheel at a multiple of the pedal speed for the two highest speeds. When used as a torque multiplier in the two low speeds, the transmission can drive the wheel either forward or in reverse depending on the direction the pedals are rotated, but permits coasting with the pedals stopped in speeds three, four, and five. A tricycle using this invention with a bin or flatbed should be useful in the factory or on the farm for the transport of parts or produce, or useful as a two passenger taxi with a seat assembly. Because the drive is completely enclosed, it can be operated for extended periods without maintenance even in dusty areas.
REFERENCES:
patent: 2441989 (1948-05-01), Brown
patent: 4706982 (1987-11-01), Hartmann
patent: 4715246 (1987-12-01), Hartmann
patent: 4721015 (1988-01-01), Hartmann
Boehler Anne Marie
Marmor Charles A.
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