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 Title: |
US4614246:
Powered wheel chair
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Masse, James H.; DePere, WI 54115
Masse, Patrick J.; DePere, WI 54115
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| Assignee: |
None
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| Published / Filed: |
1986-09-30
/ 1985-07-15
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| Application Number: |
US1985000754596
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| IPC Code: |
Advanced:
A61G 5/04;
A61G 5/10;
B62D 11/04;
IPC-7:
B62D 11/04;
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| ECLA Code: |
A61G5/04A2; A61G5/10S2; A61G5/10S14; B62D11/04; K61G5/12H; K61G5/14; K61G203/14;
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| U.S. Class: |
Current:
180/006.5;
180/907;
297/330;
297/344.14;
297/344.16;
297/DIG.004;
D12/131;
Original:
180/006.5;
180/907;
297/330;
297/346;
297/DIG.4;
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| Field of Search: |
180/6.5,907
280/657,650
297/330,346,DIG. 4
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| Priority Number: |
| 1985-07-15 |
US1985000754596 |
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| Abstract: |
The wheel chair of this invention has its seat member supported for raising and lowering on a chassis having a castering rear wheel and two relatively small front wheels rotatable on a common axis, each driven independently of the other by a reversible electric motor. A brake member is pivoted to the chassis to swing up from and down to an extended position in which the rear wheel is above the surface and the brake member cooperates with the front wheels to support and immobilize the wheel chair. Swinging legs so support the chair element on the chassis that as the chair element is lowered it moves forward over the footrest so that the footrest does not hamper the occupant in transferring to and from the wheel chair.
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| Attorney, Agent or Firm: |
Nilles, James E. ;
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| Primary / Asst. Examiners: |
Pekar, John A.;
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 12 claims |
What is claimed as the invention is:
1. A wheel chair comprising a chair element having a seat member with front and rear edges and an upwardly projecting back rest, a chassis on which the chair element is supported, wheels on said chassis, and power drive means on the chassis whereby certain of the wheels are driven, said wheel chair being characterized by:
A. said wheels comprising
- (1) two front wheels, one at each side of the chassis, confined to rotation on a common axis that is near a vertical plane containing said front edge of the seat member, and
- (2) a rear wheel which has a castering connection with the chassis to swivel about a vertical axis which is spaced a substantial distance behind said common axis and is substantially equidistant from the two front wheels;
B. said drive means comprising a pair of reversible motors, one for each of said front wheels, each said motor being connected with its front wheel to drive the same independently of the other front wheel;
C. a brake member having a surface-engaging lower end portion; and
D. means mounting the brake member on the chassis for movement relative thereto between an upwardly retracted position in which all portions of the brake member are spaced above a plane tangent to the bottoms of all of said wheels and a downwardly extended position in which said lower end portion is forwardly in line with said vertical axis, is a substantial distance behind said common axis, and is spaced below said plane to elevate the rear wheel and cooperate with the front wheels in providing stable and immobilized support for the chasis.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 60 U.S. patent(s) that reference this one
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