US4913257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically driven wheelchair with worktop and control unit
Assignee: HUKA DEVELOPMENTS BV A CORP OF NETHERLANDS
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Filing: 1988-10-24
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Granted: 1990-04-03
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Expires: 2008-10-24
Abstract
Abstract Electrically driven wheelchair with an essentially horizontal worktop (7) and a control unit (1) connected thereto, said control unit in the operational position fits into a corresponding aperture in the worktop and is connected to the worktop in such a way that it pivots and slides in a horizontal plane, and after pivoting and sliding the bottom side of the control unit fills the gap in the worktop.
Inventors
- 👤 Henricus T. J. Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:19
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/04; A61G5/1094; A61G2203/00; A61G2203/10; A61G2203/14; Y; Y10; Y10S; Y10S180/00; Y10S180/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
An electrically driven wheelchair comprising a horizontal work top, an opening in said work top at one side thereof, a smooth-bottomed control unit disposed in said opening having a control handle, said control handle projecting above the surface of said control unit at a point opposite said one side of the work top when the control unit is in operative position, a pair of elongated slots disposed at opposed sides of said opening, a pair of pins mounted on the control unit which pins extend into and slide in said slots, an umbilical cord connecting through one of said pins to said control unit, whereby said control unit can be inverted 180° by rotation about said pins to position said smooth bottom in the plane of said work top with said control handle projecting below the surface thereof adjacent said one side of said work top.
Claim 2
Dependent Claim
146 words
An electrically driven wheelchair comprising a horizontal work top, an opening in said work top at one side thereof, a smooth-bottomed control unit disposed in said opening having a control handle, said control handle projecting above the surface of said control unit at a point opposite said one side of the work top when the control unit is in operative position, a pair of elongated slots disposed at opposed sides of said opening, a pair of pins mounted on the control unit which pins extend into and slide in said slots, an umbilical cord connecting through one of said pins to said control unit, whereby said control unit can be inverted 180° by rotation about said pins to position said smooth bottom in the plane of said work top with said control handle projecting below the surface thereof adjacent said one side of said work top.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |