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 Title: |
US3952822:
Electrically powered wheel-chair for indoor and outdoor use
[ Derwent Title ]
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Country:
Kind: |
US United States of America
A PATENT [FROM BEGIN UNTIL END 2000] or PATENT ISSUED AFTER 1ST PUB. WITHIN THE TVPP i
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| Inventor: |
UDDEN PER;
GRAF SIEGFRID;
ENGMAN BERT;
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| Assignee: |
STIFTELSEN TEKNISK HJALP AT HA
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| Published / Filed: |
1976-04-27
/ 1974-03-18
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| Application Number: |
US1974000452146
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| IPC Code: |
Advanced:
A61G 5/04;
A61G 5/10;
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| ECLA Code: |
A61G5/04A6; K61G5/10Z2; K61G5/10G; K61G5/10S10; K61G5/10S12; K61G5/10Z5; K61G5/12H; L62K204/00;
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| U.S. Class: |
180/021;
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| Priority Number: |
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| Abstract: |
An electrically powered wheel-chair for indoor and outdoor use comprising a pair of rear main wheels, which are non-pivotably connected with the frame-work of the chair, at least one of said wheels being driven by an electric motor. A steering wheel being rotatably connected with the frame-work of the wheel-chair and positioned in front of the main wheels, said steering wheel being asymmetrically located on one side of a longitudinal axis through the middle of the chair. A support wheel being positioned on the other side of said longitudinal axis relative to the steering wheel at such a level above a flat and horizontal ground surface that it will not touch this surface when the steering wheel directed straight ahead. The diameter of the support wheel is less than that of the steering wheel and the distance from the fore-most point of the steering wheel to a transverse axis through the centers of the main wheels is greater than the corresponding distance for the support wheel. To provide good stability the electric batteries are located in a case thus designed that the common center of gravity of the batteries will be located on the same side of the longitudinal axis of the chair as the steering wheel. The frame-work is moreover equipped with two auxiliary support wheels on either side of the chair and rearwards the main wheels.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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