Land vehicles – Wheeled – Occupant propelled type
Patent
1989-03-29
1990-09-04
Mitchell, David M.
Land vehicles
Wheeled
Occupant propelled type
280216, 280236, B62M 104
Patent
active
049538829
ABSTRACT:
A pedal driven vehicle is provided wherein up and down movement of a pair of pedals is converted into rotary motion of a drive wheel to provide vehicle locomotion. A chain or belt connected at the ends thereof to the pedals is movable back and forth in opposite directions in response to the up and down movement of the pedals and a power transmission mechanism, driven by the chain or belt, converts the back and forth motion thereof into rotary motion used in providing rotation of the driven wheel. The transmission includes first and second driven shafts, a sprocket assembly driven by the chain for providing rotation of the first and second driven shafts in opposite directions in response to downward movement of respective pedals of the pair of pedals, and intermediate gearing for converting rotation of a first one of the shafts in a first direction into rotation of the other, output shaft in the opposite direction so that the output shaft is caused to rotate in the same direction irrespective of which pedal is pressed downward.
REFERENCES:
patent: 587837 (1897-08-01), Latimer
patent: 4227712 (1980-10-01), Dick
patent: 4630839 (1986-12-01), Seol
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