US5975632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair having a backrest with an adjustable contour
Assignee: Individual
•
Filing: 1998-09-02
•
Granted: 1999-11-02
•
Expires: 2018-09-02
Abstract
Abstract A chair having a backrest with an adjustable contour includes a slidable lumbar member for selectively changing the location of the contour in correspondence with the anatomy of the chair occupant. The lumbar member is displaceable within a travel slot. A handlebar member is operable by a seated chair occupant for releasably locking the lumbar member at selected heighth positions.
Inventors
- 👤 Jonathan Ginat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:57
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/46; A47C7/462
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
A chair with an adjustable contour backrest comprising a seat, a bracket extending from said seat for supporting a backrest, said backrest including a backpan, a resilient cushion attached to a front face of the backpan, said backpan including a substantially vertical slot, a lumbar member slidably accommodatable within said slot, with said lumbar member displacing the cushion to define a contour in said cushion, further including a sleeve member mounted to the bracket for relative movement, said sleeve member being connected to the lumbar member for selectively changing the vertical position of the lumbar member.
Claim 2
Dependent Claim
96 words
A chair with an adjustable contour backrest comprising a seat, a bracket extending from said seat for supporting a backrest, said backrest including a backpan, a resilient cushion attached to a front face of the backpan, said backpan including a substantially vertical slot, a lumbar member slidably accommodatable within said slot, with said lumbar member displacing the cushion to define a contour in said cushion, further including a sleeve member mounted to the bracket for relative movement, said sleeve member being connected to the lumbar member for selectively changing the vertical position of the lumbar member.
Claim 3
Dependent Claim
38 words
A chair with an adjustable contour backrest as claimed in claim 1 wherein one end of the bracket is attached to a rear face of the backpan, with said bracket providing a guide for the sleeve member movement.
Claim 4
Dependent Claim
37 words
A chair with an adjustable contour backrest as claimed in claim 1 further including a handlebar member extending from the sleeve member, said handlebar member being positioned below the backrest for accessibility by a seated chair occupant.
Claim 5
Dependent Claim
39 words
A chair with an adjustable contour backrest as claimed in claim 1 further including releasable locking means on the sleeve member and the bracket for limiting the relative movement to thereby secure the lumbar member at selected vertical positions.
Claim 6
Dependent Claim
37 words
A chair with an adjustable contour backrest as claimed in claim 4 wherein the releasable locking means includes a tongue member formed in the sleeve member, said tongue member being adapted for cooperative interaction with the bracket.
Claim 7
Dependent Claim
49 words
A chair with an adjustable contour backrest as claimed in claim 5 wherein the tongue member is urged toward the bracket for engaging a detent within at least one of a plurality of recesses formed in the bracket member to secure the lumbar member at a selected vertical position.
Claim 8
Dependent Claim
31 words
A chair with an adjustable contour backrest as claimed in claim 1 wherein said lumbar member includes a substantially horizontal pressure distribution element for displacing the cushion away from the backpan.
Claim 9
Dependent Claim
32 words
A chair with an adjustable contour backrest as claimed in claim 7 wherein the distribution element includes a nose portion, said nose portion being adapted to define the contour in the cushion.
Claim 10
Dependent Claim
39 words
A chair with an adjustable contour backrest as claimed in claim 1 further including an extension arm interposed between the sleeve member and the lumbar member with said lumbar member being connected to an end of the extension arm.
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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) | 2002-11-01 | 2003-05-03 | 2003-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-01 | 2007-05-03 | 2007-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-01 | 2011-05-03 | 2011-11-02 | $7700.00 | Window Closed / Lapsed |