Patent US3271534A successfully refreshed from Google Patents.
Patent US5775773A successfully refreshed from Google Patents.
US5775773A
Expired / Lapsed
US
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Arching mechanism
Assignee: Schukra Geratebau GmbH
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Filing: 1997-01-06
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Granted: 1998-07-07
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Expires: 2017-01-06
Abstract
Abstract Arching mechanism, for instance for backrests of seats, medical or orthopaedic apparatus or casings and the like, with a pressure element wherein at least one traction element connected with a tensioning mechanism engages, which, when the mechanism is actuated can produce bulging by preserving a relative elevation of apex of the convexity; the arching mechanism can comprise a frame with inserted pressure elements actuatable by adjusting device(s), whereby frame segments are length-variable pressure elements; traction elements provided with tensioning mechanism can engage a slitted, overlapping or bellows-like bulging body for the opening and closing of these areas, which produces a curving of the bulging body in a predetermined direction or directions.
Inventors
- 👤 Wilhelm Schuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:44
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/46; E; E04; E04G; E04G11/00; E04G11/36; A43; A43D; A43D3/00; A43D3/14; A43D3/1433; A47C7/462; A47C7/465; B; B60; B60N; B60N2/00; B60N2/64; B60N2/66; B60N2/666; B60N2/667; B60N2/6671; B60N2/6673
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
A lumbar support for a back of a seat, comprising: a flexible structure having an upper portion and a lower portion, said flexible structure adapted to bow upon displacement of said upper and lower portions toward one another, thereby forming a curvature having an apex; a traction mechanism for drawing said upper and lower portions toward one another, said traction mechanism including a first vertical rod attached to said upper portion and a second vertical rod attached to said lower portion, and an adjustment member for moving said first and second vertical rods in an upward or downward direction; and wherein said first vertical rod is attached to a midsection of said upper portion and said second vertical rod is attached to a midsection of said lower portion of said flexible structure.
Claim 2
Dependent Claim
132 words
A lumbar support for a back of a seat, comprising: a flexible structure having an upper portion and a lower portion, said flexible structure adapted to bow upon displacement of said upper and lower portions toward one another, thereby forming a curvature having an apex; a traction mechanism for drawing said upper and lower portions toward one another, said traction mechanism including a first vertical rod attached to said upper portion and a second vertical rod attached to said lower portion, and an adjustment member for moving said first and second vertical rods in an upward or downward direction; and wherein said first vertical rod is attached to a midsection of said upper portion and said second vertical rod is attached to a midsection of said lower portion of said flexible structure.
Claim 3
Dependent Claim
16 words
The lumbar support according to claim 1, further comprising a handwheel for operating said traction mechanism.
Claim 4
Dependent Claim
20 words
The lumbar support according to claim 2, wherein said handwheel is connected to a shaft which drives said adjustment member.
Claim 5
Dependent Claim
19 words
The lumber support according to claim 1, wherein uppermost and lowermost portions of said flexible structure are movably supported.
Claim 6
Dependent Claim
133 words
A lumbar support for a back of a seat, comprising: a flexible structure having an uppermost portion and a lowermost portion, said flexible structure adapted to bow upon displacement of said uppermost and lowermost portions toward one another; a traction mechanism for drawing said uppermost and lowermost portions toward one another, said traction mechanism including a first vertical rod attached to an upper portion of said flexible structure and a second vertical rod attached to a lower portion of said flexible structure, and an adjustment member for moving said first and second vertical rods in an upward or downward direction; and wherein said first vertical rod is attached to a midsection of said upper portion and said second vertical rod is attached to a midsection of said lower portion of said flexible structure.
Claim 7
Dependent Claim
133 words
A lumbar support for a back of a seat, comprising: a flexible structure having an uppermost portion and a lowermost portion, said flexible structure adapted to bow upon displacement of said uppermost and lowermost portions toward one another; a traction mechanism for drawing said uppermost and lowermost portions toward one another, said traction mechanism including a first vertical rod attached to an upper portion of said flexible structure and a second vertical rod attached to a lower portion of said flexible structure, and an adjustment member for moving said first and second vertical rods in an upward or downward direction; and wherein said first vertical rod is attached to a midsection of said upper portion and said second vertical rod is attached to a midsection of said lower portion of said flexible structure.
Claim 8
Dependent Claim
16 words
The lumbar support according to claim 5, further comprising a handwheel for operating said traction mechanism.
Claim 9
Dependent Claim
20 words
The lumbar support according to claim 6, wherein said handwheel is connected to a shaft which drives said adjustment member.
References Cited (Backward Citations)
US1743377A
Cited
US3378299A
Cited
DE2040794A1
Cited
US3762769A
Cited
DE2345254A1
Cited
SU587924A2
Cited
US4153293A
Cited
DE2804703A1
Cited
US4354709A
Cited
US4313637A
Cited
US4316631A
Cited
US4359245A
Cited
US4627661A
Cited
US4676550A
Cited
US4601514A
Cited
US4632454A
Cited
US4909568A
Cited
US4968093A
Cited
US5026116A
Cited
US4880271A
Cited
US4880291A
Cited
US5050930A
Cited
US5397164A
Cited
US5335965A
Cited
US5197780A
Cited
US5217278A
Cited
US5385531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-06 | 2002-01-05 | 2002-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-06 | 2006-01-05 | 2006-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-06 | 2010-01-05 | 2010-07-07 | $7700.00 | Window Closed / Lapsed |