US5913569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustment apparatus for a flexible support element of a back rest
Assignee: Schukra Geratebau GmbH
•
Filing: 1994-06-16
•
Granted: 1999-06-22
•
Expires: 2014-06-16
Abstract
Abstract An apparatus for adjusting the arching of a resiliently flexible support element for supporting the pelvic and/or lumbular vertebrae in a back rest of a seat including an arching device comprising a spring and an operating device. The spring is included in the force transmission tract for adjusting the arching. Preferably a spring is fitted between one end of the support element and the force transmission member of the arching means and/or a spring is fitted to the free end of the force transmission member of the arching device behind the operating device.
Inventors
- 👤 Knud Klingler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:13
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/64; B60N2/66; B60N2/667; B60N2/6673; B60N2/6671; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20408; Y10T74/20462
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
111 words
A lumbar support for a back rest of a seat, comprising: a flexible support element; a Bowden cable arrangement for adjusting a curvature of said support element, said Bowden cable arrangement including a sheath and a cable having a free end attached in series to a flexible spring which is operatively comected to one end portion of said support element, said flexible spring allowing for an adjustment of said curvature of said flexible support element when a force is applied to said flexible support element; and an operating device connected to said Bowden cable arrangement for adjusting said Bowden cable arrangement and thereby adjusting a curvature of said flexible support element.
Claim 2
Dependent Claim
111 words
A lumbar support for a back rest of a seat, comprising: a flexible support element; a Bowden cable arrangement for adjusting a curvature of said support element, said Bowden cable arrangement including a sheath and a cable having a free end attached in series to a flexible spring which is operatively comected to one end portion of said support element, said flexible spring allowing for an adjustment of said curvature of said flexible support element when a force is applied to said flexible support element; and an operating device connected to said Bowden cable arrangement for adjusting said Bowden cable arrangement and thereby adjusting a curvature of said flexible support element.
Claim 3
Dependent Claim
20 words
The lumbar support according to claim 1, further comprising a second spring connected to a second end of said cable.
Claim 4
Dependent Claim
21 words
The lumbar support according to claim 2, wherein said cable is passed around a disc-shaped drum coupled to said operating device.
Claim 5
Dependent Claim
15 words
The lumbar support according to claim 1, wherein said operating device includes a free-wheeling brake.
Claim 6
Dependent Claim
16 words
The lumbar support according to claim 1, wherein said flexible support element is made from plastic.
Claim 7
Dependent Claim
15 words
The lumbar support according to claim 1, wherein said operating device includes an adjustment motor.
Claim 8
Dependent Claim
22 words
The lumbar support according to claim 1, wherein said sheath is operatively attached to a second end portion of said support element.
Claim 9
Dependent Claim
122 words
A support for a back rest of a seat, comprising: a flexible support element having an upper portion and a lower portion; a Bowden cable arrangement for adjusting a curvature of said flexible support element, said Bowden cable arrangement including a cable having a first end attached to a first end of a flexible spring which is operatively connected at an opposite second end thereof to said flexible support element, said flexible spring allowing for an adjustment of said curvature of said flexible support element when a force is applied to said flexible support element; and an operating device operatively connected to said Bowden cable arrangement for adjusting said Bowden cable arrangement and thereby adjusting a curvature of said flexible support element.
Claim 10
Dependent Claim
122 words
A support for a back rest of a seat, comprising: a flexible support element having an upper portion and a lower portion; a Bowden cable arrangement for adjusting a curvature of said flexible support element, said Bowden cable arrangement including a cable having a first end attached to a first end of a flexible spring which is operatively connected at an opposite second end thereof to said flexible support element, said flexible spring allowing for an adjustment of said curvature of said flexible support element when a force is applied to said flexible support element; and an operating device operatively connected to said Bowden cable arrangement for adjusting said Bowden cable arrangement and thereby adjusting a curvature of said flexible support element.
Claim 11
Dependent Claim
40 words
The support according to claim 8, wherein said upper portion of said flexible support element is adapted to support a lumbar vertebrae region and said lower portion of said flexible support element is adapted to support a pelvic vertebrae region.
Claim 12
Dependent Claim
14 words
The support according to claim 8, wherein said operating device includes a free-wheeling brake.
Claim 13
Dependent Claim
14 words
The support according to claim 8, wherein said operating device includes an adjustment motor.
Claim 14
Dependent Claim
15 words
The support according to claim 8, wherein said flexible support element is made from plastic.
Claim 15
Dependent Claim
19 words
The support according to claim 8, further comprising a second spring connected to a second end of said cable.
Claim 16
Dependent Claim
20 words
The support according to claim 13, wherein said cable is passed around a disc-shaped drum coupled to said operating device.
Claim 17
Dependent Claim
80 words
A support for a back rest of a seat, comprising a flexible support element; and a Bowden cable arrangement for adjusting a curvature of said flexible support element, said Bowden cable arrangement including a cable having a first end attached in series to a flexible spring which is operatively connected to said flexible support element, said flexible spring allowing for an adjustment of said curvature of said flexible support element when a force is applied to said flexible; support element.
Claim 18
Dependent Claim
80 words
A support for a back rest of a seat, comprising a flexible support element; and a Bowden cable arrangement for adjusting a curvature of said flexible support element, said Bowden cable arrangement including a cable having a first end attached in series to a flexible spring which is operatively connected to said flexible support element, said flexible spring allowing for an adjustment of said curvature of said flexible support element when a force is applied to said flexible; support element.
Claim 19
Dependent Claim
31 words
The support according to claim 15, wherein said flexible support element includes an upper portion for supporting a lumbar vertebrae region and a lower portion for supporting a pelvic vertebrae region.
Claim 20
Dependent Claim
46 words
The support according to claim 15, further comprising: an operating device operatively connected to said Bowden cable arrangement for adjusting said Bowden cable arrangement and thereby adjusting a curvature of said flexible support element; and a second spring connected to a second end of said cable.
Claim 21
Dependent Claim
20 words
The support according to claim 17, wherein said cable is passed around a disc-shaped drum coupled to said operating device.
Claim 22
Dependent Claim
14 words
The support according to claim 17, wherein said operating device includes a free-wheeling brake.
Claim 23
Dependent Claim
14 words
The support according to claim 17, wherein said operating device includes an adjustment motor.
References Cited (Backward Citations)
US4156544A
Cited
US4452485A
Cited
US4553449A
Cited
US5026116A
Cited
US5080434A
Cited
US5067365A
Cited
US5397164A
Cited
US4951995A
Cited
US5010780A
Cited
US5472261A
Cited
US5215350A
Cited
US5174526A
Cited
US5452868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-06-21 | 2002-12-21 | 2003-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-21 | 2006-12-21 | 2007-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-21 | 2010-12-21 | 2011-06-22 | $7700.00 | Window Closed / Lapsed |