Patent US3718686A successfully refreshed from Google Patents.
Patent US5934752A successfully refreshed from Google Patents.
US5934752A
Expired / Lapsed
US
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Resilient curve element of plastics material with longitudinal and transverse struts for a lordosis support with adjustable curvature
Assignee: Schukra Geratebau GmbH
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Filing: 1995-12-14
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Granted: 1999-08-10
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Expires: 2015-12-14
Abstract
Abstract An elastic contouring assembly for a lumbar support system includes an adjustable contouring element having a central longitudinal strut and an integral shoulder for attachent of an adjustment device. A tensioning cable having one end attached to the contouring element and an opposite end attached to the adjustment adjusts the curvature of the contouring element. Guide elements extend from the central longitudinal strut and include aperatures to receive the tensioning cable. Each of the apertures define an individual clearance height from the central longitudinal strut, and as the clearence heights differ, the radius of the contouring element can be adjusted by extending or retracting the tensioning cable.
Inventors
- 👤 Knud Klingler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:38
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/46; A47C7/462
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
130 words
An elastic contouring element with longitudinal and transverse struts for a lumbar support system with an adjustable curvature and a tensioning device having a first end and an opposite second end said first end of which is connected to the contouring element by a fastening element and an opposite second end of which is connected to an adjustment device for adjusting the curvature of the contouring element, characterized in that the contouring element includes an integral shoulder, the shoulder being attached to a housing for receiving and supporting the adjustment device, and a plurality of bridge elements extending from a central longitudinal strut of the contouring element to guide the tensioning cable, each of the bridge elements defining a clearance height between the tensioning device and the central longitudinal strut.
Claim 2
Dependent Claim
130 words
An elastic contouring element with longitudinal and transverse struts for a lumbar support system with an adjustable curvature and a tensioning device having a first end and an opposite second end said first end of which is connected to the contouring element by a fastening element and an opposite second end of which is connected to an adjustment device for adjusting the curvature of the contouring element, characterized in that the contouring element includes an integral shoulder, the shoulder being attached to a housing for receiving and supporting the adjustment device, and a plurality of bridge elements extending from a central longitudinal strut of the contouring element to guide the tensioning cable, each of the bridge elements defining a clearance height between the tensioning device and the central longitudinal strut.
Claim 3
Dependent Claim
25 words
Contouring element according to claim 1, characterized in that the clearance heights of the bridge elements decrease as the bridge elements approach the fastening element.
Claim 4
Dependent Claim
34 words
Contouring element according to claim 1, characterized in that at least one bridge element is equipped with an elevated portion on the central longitudinal strut, which limits the clearance height for the tensioning cable.
Claim 5
Dependent Claim
31 words
Contouring element according to claim 3, characterized in that the clearance height, which is limited by the bridge element and the elevated portion, corresponds to the thickness of the tensioning device.
Claim 6
Dependent Claim
31 words
Contouring element according to claim 1, characterized in that the fastening element consists of a locking protrusion and a corresponding locking opening at the contouring element or in the tensioning device.
Claim 7
Dependent Claim
28 words
Contouring element according to claim 5, characterized in that the locking protrusion is an integral part of the contouring element and contains a glide ramp facing the shoulder.
Claim 8
Dependent Claim
34 words
Contouring element according to claim 5, characterized in that the locking protrusion is a bent, hook-shaped part of the tensioning device, which can be inserted into a locking opening provided in the central strut.
Claim 9
Dependent Claim
20 words
Contouring element according to claim 1, characterized in that the tensioning device contains a locking bore for receiving the cam.
Claim 10
Dependent Claim
34 words
Contouring element according to claim 1, characterized in that the shoulder is additionally connected to the rotatable locking part of the housing by means of a thinner material section, which functions as a joint.
Claim 11
Dependent Claim
29 words
Contouring element according to claim 9, characterized in that the shoulder and the locking part of the housing contain mutual guiding means in the form of projections and recesses.
Claim 12
Dependent Claim
25 words
Contouring element according to claim 1, characterized in that the contouring element contains integral fastening elements for the attachment to frame parts of a seat.
Claim 13
Dependent Claim
30 words
Contouring element according to claim 11, characterized in that the fastening element consists of a round peg located in the housing such that a portion of the peg is exposed.
Claim 14
Dependent Claim
43 words
Contouring element according to claim 12, characterized in that the round peg is exposed at a central portion and at each end, the central portion having a flats area offset by 180° with respect to a flat area located at each exposed end.
Claim 15
Dependent Claim
84 words
An elastic contouring assembly for a lumbar support system, comprising: a contouring element having a central portion including a longitudinally extending central strut; an adjustment device; a tensioning device having one end attached to said contouring element and an opposite end attached to said adjustment device to adjust the curvature of said contouring element; and, guide elements extending from spaced apart intermediate locations on said central strut of said contouring element, each of said guide elements having an aperture to receive said tensioning device.
Claim 16
Dependent Claim
84 words
An elastic contouring assembly for a lumbar support system, comprising: a contouring element having a central portion including a longitudinally extending central strut; an adjustment device; a tensioning device having one end attached to said contouring element and an opposite end attached to said adjustment device to adjust the curvature of said contouring element; and, guide elements extending from spaced apart intermediate locations on said central strut of said contouring element, each of said guide elements having an aperture to receive said tensioning device.
Claim 17
Dependent Claim
29 words
The assembly of claim 14, wherein each of said apertures define an individual clearance height from said contouring elements, said clearance height differing for each of said guide elements.
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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) | 2002-08-09 | 2003-02-08 | 2003-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-09 | 2007-02-08 | 2007-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-09 | 2011-02-08 | 2011-08-10 | $7700.00 | Window Closed / Lapsed |