Patent US4632455A successfully refreshed from Google Patents.
US4632455A
Expired / Lapsed
US
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Chair with occupant assisting features
Assignee: Individual
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Filing: 1985-03-21
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Granted: 1986-12-30
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Expires: 2005-03-21
Abstract
Abstract A chair having a seat pivotally connected to a base frame, the seat's pivotal axis being horizontal and parallel to the front of the chair and located intermediate the front and back of the seat proximal its center of gravity. A hydraulic cylinder is attached; between the seat and base frame to dampen pivotal movement of the seat as a person is assisted into or out of the chair.
Inventors
- 👤 Robert E. Schiller
- 👤 Chester R. Harris, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:47
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/14; Y; Y10; Y10S; Y10S297/00; Y10S297/04; Y10S297/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
A chair with occupant-assisting feature, comprising: a ground-supported frame having a transversely-oriented beam affixed thereto intermediate the front and back of said frame at seat level; a seat affixed to said beam for pivotal movement about the longitudinal axis thereof; wherein said frame is open in front to allow said seat to pivot frontwards to a nearly vertical orientation and has means for restricting its backwards pivot to a sitting orientation; and wherein the location on said seat where it is affixed to said beam is such that its weight fore and aft of said location will enable a person sitting down in, or arising from, said seat to do so from a substantially standing position to a sitting position, or vice-versa, respectively, by a minimal movement of his or her upper body backwards or forwards, respectively.
Claim 2
Dependent Claim
137 words
A chair with occupant-assisting feature, comprising: a ground-supported frame having a transversely-oriented beam affixed thereto intermediate the front and back of said frame at seat level; a seat affixed to said beam for pivotal movement about the longitudinal axis thereof; wherein said frame is open in front to allow said seat to pivot frontwards to a nearly vertical orientation and has means for restricting its backwards pivot to a sitting orientation; and wherein the location on said seat where it is affixed to said beam is such that its weight fore and aft of said location will enable a person sitting down in, or arising from, said seat to do so from a substantially standing position to a sitting position, or vice-versa, respectively, by a minimal movement of his or her upper body backwards or forwards, respectively.
Claim 3
Dependent Claim
15 words
The chair of claim 1, further comprising means for dampening pivotal movement of said seat.
Claim 4
Dependent Claim
15 words
The chair of claim 1, further comprising a back element rigidly mounted to said seat.
Claim 5
Dependent Claim
13 words
The chair of claim 1, further comprising armrests rigidly mounted to said seat.
Claim 6
Dependent Claim
24 words
The chair of claim 1, further comprising handgrips rigidly mounted to said seat and extending upwardly and outwardly from the two front corners thereof.
Claim 7
Dependent Claim
62 words
The chair of claim 2, wherein said dampening means includes a first hydraulic cylinder pivotally attached between said frame and said seat at a point fore of the pivotal axis of said seat and a second hydraulic cylinder pivotally attached below said frame and said seat at a point aft thereof, whereby said cylinders will bias against pivotal movement in both directions.
Claim 8
Dependent Claim
21 words
The chair of claim 3, further comprising a head rest rigidly mounted to said back element and extending generally vertically therefrom.
Claim 9
Dependent Claim
58 words
The chair of claim 6, wherein the pivotal attachment of one end of said cylinder includes a plurality of attachment positions oriented such that the length of said cylinder may be adjusted by selective attachment to a different attachment position, whereby the amount of bias of said cylinder may be adjusted for the weight of a particular user.
Claim 10
Dependent Claim
24 words
The chair of claim 2, further comprising handgrips rigidly mounted to said seat and extending upwardly and outwardly from the two front corners thereof.
Claim 11
Dependent Claim
24 words
The chair of claim 3, further comprising handgrips rigidly mounted to said seat and extending upwardly and outwardly from the two front corners thereof.
Claim 12
Dependent Claim
24 words
The chair of claim 4, further comprising handgrips rigidly mounted to said seat and extending upwardly and outwardly from the two front corners thereof.
Claim 13
Dependent Claim
15 words
The chair of claim 2, further comprising a back element rigidly mounted to said seat.
Claim 14
Dependent Claim
13 words
The chair of claim 2, further comprising armrests rigidly mounted to said seat.
Claim 15
Dependent Claim
24 words
The chair of claim 12, further comprising handgrips rigidly mounted to said seat and extending upwardly and outwardly from the two front corners thereof.
Claim 16
Dependent Claim
23 words
The chair of claim 13, further comprising handgrips rigidly mounted to said seat and extending upwardly and outwardly from two front corners thereof.
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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) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |