Vehicle multispeed drive system utilizing arm and leg power

Land vehicles – Wheeled – Occupant propelled type

Patent

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Details

280236, 280250, B62M 112

Patent

active

043032559

ABSTRACT:
A drive system for a vehicle permitting the use of an operator's arms and legs to power the vehicle. A multispeed hub assembly is offset from a powered wheel assembly and drives same with a roller chain. Arm and leg power is imparted respectively to a hand crankshaft and a live axle which power is transmitted to the multispeed hub via additional roller chains. A speed control for shifting the multispeed hub is actuated by handgrip rotation during normal hand crank operation to permit speed changes without release of either handgrip. A brake mechanism on the hand crankshaft actuates brake cables actuating caliper brakes upon reverse rotation of the hand crankshaft. The multispeed hub may include an internal coaster brake mechanism in one form of the invention.

REFERENCES:
patent: 2390719 (1945-12-01), Kurth
patent: 2533728 (1950-12-01), Gedat et al.
patent: 3193305 (1965-07-01), Hendricks
patent: 3352173 (1967-11-01), Freeland
patent: 3910599 (1975-10-01), Thomas
patent: 4109927 (1978-08-01), Harper
patent: 4152005 (1979-05-01), Vanore

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