Propulsion means for wheelchairs

Details Propulsion means for wheelchairs Propulsion means for wheelchairs

1976-01-28

1976-11-30

Goodman, Philip

Land vehicles

Wheeled

Occupant propelled type

280243, 280244, B62M 114

Patent

active

039945090

ABSTRACT:
A propulsion means for wheelchairs includes two drive assemblies, one mounted at each side of a wheelchair. Each drive assembly includes an axle which is rotationally oscillated by pumping a drive lever pivotally mounted on and engaged with said axle. Two overrunning clutches are also mounted on said axle: one clutch disposed to engage when the axle is rotated in a clockwise direction, and the other disposed to engage when the axle is rotated counterclockwise. A chain, connected to a ground wheel, is connected to one clutch and then the other through a reverse bend in said chain, so that the oscillatory motion of said axle is transmitted through said chain to cause unidirectional rotational motion in said ground wheel.

REFERENCES:
patent: 390174 (1888-09-01), Lambert
patent: 616021 (1898-12-01), Schaibly
patent: 654896 (1900-07-01), Krueger
patent: 827243 (1906-07-01), Larson
patent: 838228 (1906-12-01), Williams
patent: 1058123 (1913-04-01), Whitaker
patent: 1332819 (1920-03-01), Eklund
patent: 3701543 (1972-10-01), Clark

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