US4979726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair having lift apparatus
Assignee: Individual
•
Filing: 1990-05-15
•
Granted: 1990-12-25
•
Expires: 2010-05-15
Abstract
Abstract A chair having lifting means for assisting a physically impaired occupant to arise from the chair, having a frame, a seat hingeadly mounted at its forward edge to the frame, seat lifting means, and spring biasing actuating means arranged to spring-bias the seat to an upwardmost position, thereby assisting the occupant of the seat to rise out of the seat.
Inventors
- 👤 Alexander Geraci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:27
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/14; Y; Y10; Y10S; Y10S297/00; Y10S297/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
A chair having lifting means for assisting a physically impaired occupant to arise out of the chair, comprising: a detent mounted on said chair, a frame, a seat hingedly mounted at its forward edge to said frame, seat lifting means pivotally attached to said frame and to said seat, spring biasing actuating means pivotally attached to said frame, one or more springs connected between said seat lifting means and said spring biasing actuating means, and lever means pivotally mounted on said spring biasing actuating means having hook means adapted to engage the detent means of said frame, whereby, when said lever means is raised and said hook engaged in said detent of said frame, said springs are stretched, thereby applying a spring biasing force urging said seat upwardly, and whereby when said hook means is disengaged from said detent, said seat is permitted to collapse to the inoperative condition.
Claim 2
Dependent Claim
149 words
A chair having lifting means for assisting a physically impaired occupant to arise out of the chair, comprising: a detent mounted on said chair, a frame, a seat hingedly mounted at its forward edge to said frame, seat lifting means pivotally attached to said frame and to said seat, spring biasing actuating means pivotally attached to said frame, one or more springs connected between said seat lifting means and said spring biasing actuating means, and lever means pivotally mounted on said spring biasing actuating means having hook means adapted to engage the detent means of said frame, whereby, when said lever means is raised and said hook engaged in said detent of said frame, said springs are stretched, thereby applying a spring biasing force urging said seat upwardly, and whereby when said hook means is disengaged from said detent, said seat is permitted to collapse to the inoperative condition.
Claim 3
Dependent Claim
55 words
A chair according to claim 1, wherein said spring biasing actuating means comprises a pair of lever means pivotally mounted on said frame, a transverse member connecting said lever means having a plurality of hooks thereon for engaging one end of said springs, and a second transverse member having said lever means pivotally connected thereto.
Claim 4
Dependent Claim
67 words
A chair according to claim 1, wherein said seat lifting means comprises a pair of lever members pivotally connected to said seat, a second pair of lever members having one end connected to said first lever members and the other end connected to said frame, and a transverse member connected to said lever members having hooks mounted thereon connected to an end of each of said springs.
Claim 5
Dependent Claim
24 words
A chair according to claim 1, wherein said lever means utilized in moving said spring biasing actuating means is provided with a hand grip.
Claim 6
Dependent Claim
68 words
A chair according to claim 2, wherein said seat lifting means comprises a pair of lever members pivotally connected to said seat, a second pair of lever members having one end pivotally connected to said first lever members and the other end connected to said frame, and a transverse member connected to said lever members having hooks mounted thereon connected to one end of each of said springs.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |