US4778217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthopedic chair
Assignee: Individual
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Filing: 1987-02-17
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Granted: 1988-10-18
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Expires: 2007-02-17
Abstract
Abstract An improved orthopedic chair. The chair utilizes the force of gravity and weight of an individual balanced about a fulcrum to control the rate of descent of an individual from a standing to a seated position.
Inventors
- 👤 Bruce E. Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:22
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/14; Y; Y10; Y10S; Y10S297/00; Y10S297/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
245 words
An orthopedic chair including (a) a frame including an elongate horizontally disposed fulcrum in fixed position at a distance above the ground; (b) a seat resting on said fulcrum and having (i) a center of gravity, (ii) a geometrical center, and (iii) a base, said base of said seat resting on and supported by said fulcrum; (c) linkage means extending from said fulcrum to said base of said seat and pivotally attached to said fulcrum and said base, said base pivoting over said fulcrum between at least two operative positions, (i) a first operative position with said seat in an upright orientation with at least one of said geometrical center and said center of gravity forward of said fulcrum such that the buttocks and upper legs of an erect individual contact said seat means in said first operative position after the individual stands adjacent said seat means and forward of said fulcrum to begin to move from an erect to a seated position, and (ii) a second operative position with said seat in a generally horizontal orientation resting on said fixed fulcrum and with the individual seated in said chair, the individual controlling with his buttocks and upper legs the movement of said seat from said first to said second operative position, said chair being shaped and dimensioned such that the heels of the feet of an individual are above the ground when the individual is sitting on said seat in said second operative position.
Claim 2
Dependent Claim
245 words
An orthopedic chair including (a) a frame including an elongate horizontally disposed fulcrum in fixed position at a distance above the ground; (b) a seat resting on said fulcrum and having (i) a center of gravity, (ii) a geometrical center, and (iii) a base, said base of said seat resting on and supported by said fulcrum; (c) linkage means extending from said fulcrum to said base of said seat and pivotally attached to said fulcrum and said base, said base pivoting over said fulcrum between at least two operative positions, (i) a first operative position with said seat in an upright orientation with at least one of said geometrical center and said center of gravity forward of said fulcrum such that the buttocks and upper legs of an erect individual contact said seat means in said first operative position after the individual stands adjacent said seat means and forward of said fulcrum to begin to move from an erect to a seated position, and (ii) a second operative position with said seat in a generally horizontal orientation resting on said fixed fulcrum and with the individual seated in said chair, the individual controlling with his buttocks and upper legs the movement of said seat from said first to said second operative position, said chair being shaped and dimensioned such that the heels of the feet of an individual are above the ground when the individual is sitting on said seat in said second operative position.
Claim 3
Dependent Claim
254 words
An orthopedic chair including (a) a frame including a back support, arm rests and an elongate horizontally disposed fulcrum in fixed position at a distance above the ground; (b) a seat resting on said fulcrum and having (i) a center of gravity, (ii) a geometrical center, and (iii) a base, said base of said seat resting on and supported by said fulcrum; (c) an elongate link extending from said fulcrum to said base of said seat and pivotally attached to said fulcrum and said base, said seat pivoting over said fulcrum independently of said back support and arm rests between at least two operative positions, said link connecting said seat to said frame and pivoting about said fulcrum with said base, (i) a first operative position with said seat in an upright orientation with at least one of said geometrical center and said center of gravity forward of said fulcrum such that the buttocks and upper legs of an erect individual contact said seat means in said first operative position after the individual stands adjacent said seat means and forward of said fulcrum to begin to move from an erect to a seated position, and (ii) a second operative position with said seat in a generally horizontal orientation resting on said fixed fulcrum and with the individual seated in said chair, said chair being shaped and dimensioned such that the heels of the feet of an individual are above the ground when the individual is sitting on said seat in said second operative position.
Claim 4
Dependent Claim
254 words
An orthopedic chair including (a) a frame including a back support, arm rests and an elongate horizontally disposed fulcrum in fixed position at a distance above the ground; (b) a seat resting on said fulcrum and having (i) a center of gravity, (ii) a geometrical center, and (iii) a base, said base of said seat resting on and supported by said fulcrum; (c) an elongate link extending from said fulcrum to said base of said seat and pivotally attached to said fulcrum and said base, said seat pivoting over said fulcrum independently of said back support and arm rests between at least two operative positions, said link connecting said seat to said frame and pivoting about said fulcrum with said base, (i) a first operative position with said seat in an upright orientation with at least one of said geometrical center and said center of gravity forward of said fulcrum such that the buttocks and upper legs of an erect individual contact said seat means in said first operative position after the individual stands adjacent said seat means and forward of said fulcrum to begin to move from an erect to a seated position, and (ii) a second operative position with said seat in a generally horizontal orientation resting on said fixed fulcrum and with the individual seated in said chair, said chair being shaped and dimensioned such that the heels of the feet of an individual are above the ground when the individual is sitting on said seat in said second operative position.
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) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |