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 Title: |
US3901337:
Wheel chairs
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Cragg, Harold; Birmingham, United Kingdom
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| Assignee: |
The Spastics Society, London, United Kingdom
other patents from SPASTICS SOCIETY (534865) (approx. 3)
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| Published / Filed: |
1975-08-26
/ 1972-11-22
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| Application Number: |
US1972000308790
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| IPC Code: |
Advanced:
A61G 5/04;
B60G 11/23;
B60K 1/02;
B60K 17/14;
B62D 11/02;
C04B 2/10;
A61G 5/08;
A61G 5/10;
Subclass:
A61G;
IPC-7:
B60K 7/60;
B62D 11/04;
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| ECLA Code: |
A61G5/04A6; B60G11/23; B62D11/02; C04B2/10; K61G5/08A2; K61G5/10Z1; K61G203/14; L60G204/30;
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| U.S. Class: |
Current:
180/006.5;
074/405;
180/065.6;
180/907;
Original:
180/006.5;
074/405;
180/065.F;
180/DIG.3;
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| Field of Search: |
180/6.5,19 R,64 MM,65 F,DIG. 3
074/405,211
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| Priority Number: |
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| Abstract: |
In a wheel chair, electric driving means pivotally supported for movement between an operative driving position in which a wheel pinion and driven pinion are coupled, and an inoperative position in which the pinions are uncoupled leaving the wheel free for normal rotation free of any coupling to the electric driving means. Preferably the wheel and electric driving means is supported on the wheel chair frame by a resilient mounting embodying a suspension media providing independent suspension for the rear wheels.
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| Attorney, Agent or Firm: |
Imirie, Smiley & Linn ;
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| Primary / Asst. Examiners: |
Spar, Robert J.; Paperner, Leslie J.
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
Show 11 known family members
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First Claim:
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I claim:
1. In a wheelchair, electric driving means comprising an electric motor, battery power means connected to said electric motor through control means, drive transmitting means cpupled to said electric motor and including an output shaft, a driven pinion on said output shaft, a fixed pinion engageable with said driven pinion, a wheel plate carrying said fixed pinion and supporting a rotatable wheel, a ground-engaging tire supported on said wheel, and said fixed pinion being disposed inwardly of said ground-engaging tire, a mounting bracket mounting said wheel plate on a frame member of the wheel chair, a bushing of said mounting bracket including a suspension media arranged to permit resilient movement of said wheel plate independent of said frame member, and means supporting said drive transmitting means on said wheel plate for relative pivotal movement between two extreme positions in the first of which said driven pinion and said fixed pinion are inter-engaged for driving said wheel on operation of said electric motor, and in the second of which said driven pinion is disengaged to permit free rotation of said wheel.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 20 U.S. patent(s) that reference this one
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