Patent US2443958A successfully refreshed from Google Patents.
US4880271A
Expired / Lapsed
US
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Adjustable lumbar support
Assignee: L&P/YOUNG SPRING ACQUISITION COMPANY Inc A CORP OF
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Filing: 1988-12-23
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Granted: 1989-11-14
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Expires: 2008-12-23
Abstract
Abstract A lumbar support for a motor vehicle seat or the like is provided. The support includes a pair of vertically mounted bands supported by an upper support band and a bracket, respectively. The vertical bands are bowed towards the front of the seat. An adjustment band is pivotably mounted to a rotatable plate on the bracket for controlling the bowing of the vertical bands. A spring is mounted between the upper support band and the bracket and pulls them towards each other.
Inventors
- 👤 Lee K. Graves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:19
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/64; B60N2/66; B60N2/667; B60N2/6673
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
An adjustable lumbar-support for a vehicle seat comprising a top support member, a bottom support member, a vertically-extending convex flexible band secured to both support members and having a resilience opposing increasing convexity, means for adjusting the distance between the supports to vary the convexity of the flexible band, and spring means interconnecting the supports to bias the flexible band toward increasing convexity in opposition to the resilience of the flexible band, characterized by the adjusting means including a second flexible band affixed to one of the support members and movably mounted on the other support member.
Claim 2
Dependent Claim
97 words
An adjustable lumbar-support for a vehicle seat comprising a top support member, a bottom support member, a vertically-extending convex flexible band secured to both support members and having a resilience opposing increasing convexity, means for adjusting the distance between the supports to vary the convexity of the flexible band, and spring means interconnecting the supports to bias the flexible band toward increasing convexity in opposition to the resilience of the flexible band, characterized by the adjusting means including a second flexible band affixed to one of the support members and movably mounted on the other support member.
Claim 3
Dependent Claim
76 words
The lumbar support of claim 1, further characterized by the bottom support member including a bracket mounting the first band and the adjusting means including a plate pivoted to the bracket for rotation about a first axis, the second band being pivoted to the plate about a second axis parallel to the first such that rotation to the plates moves the support members relative to each other which varies the convexity of the first flexible band.
Claim 4
Dependent Claim
49 words
The lumbar support of claim 2, further characterized by a peripheral wire frame mounting both support members to enable attachment of the lumbar support as a unit to a seat structure and the spring means comprising an elongated coil spring in tension urging the support members toward each other.
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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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |