Title:
Driving and steering apparatus for wheel chairs
United States Patent 2978053
US Patent References:
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- - 0644950

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- - 0803008

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- - 0988287

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- - 1147581

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Inventors:
Schmidt, Arthur O.
Publication Date:
04/04/1961
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Assignee:
Schmidt, Arthur O.
Primary Class:
180/12
Other Classes:
180/16, 180/214, 180/253, 180/65.100, 180/907, 180/443
International Classes:
A61G5/04; B60K1/00; A61G5/00
US Patent References:
1235014
2448992Propelling power unit for invalid wheel chairs
2468801Power operated chair
2495573Motor attachment for wheel chairs
2635703Wheel chair adapted for optional operation by power or manually
2669314Warehouse type tractor with trailer coupling device
2798565Motorized wheel chair steered by driving