US4715653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lumbar support apparatus
Assignee: Aisin Corp
•
Filing: 1986-09-19
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Granted: 1987-12-29
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Expires: 2006-09-19
Abstract
Abstract A lumbar support apparatus includes a seat frame, a first wire support member fixed to the frame, a second wire support member attached to the frame and a third wire support member interconnecting the first and second support members. The second support member is movable to a position forward of the seat frame. The movement of the three support members by virtue of the interconnections causes a reduction in the discomfort to a seat occupant.
Inventors
- 👤 Takemi Hattori
- 👤 Nobuhiko Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:03
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/46; A47C7/462; B; B60; B60N; B60N2/00; B60N2/64; B60N2/66; B60N2/667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A lumbar support apparatus comprising: a seat frame; a first support member fixed to said frame, said first support member being made of wire formed in an S-spring; a second support member attached to said frame, said second support member being made of wire formed in an S-spring and being movable from substantially within a plane defined by said frame to a position forward of said plane; a third support member interposed between said first and second support members for interconnecting the same and movable with said second support member, said third support member being made of wire formed in an S-spring and connected to said first fixed support member and said second movable support member at a plurality of points; and a cam mounted for rotation on said frame, said cam having a groove formed thereon; a movable arm connected to said second support member; and a cam pin connected to said movable arm and engaging said groove so as to cause movement of said arm upon rotation of said cam, thereby moving said second support member and the interconnected first and third support members.
Claim 2
Dependent Claim
186 words
A lumbar support apparatus comprising: a seat frame; a first support member fixed to said frame, said first support member being made of wire formed in an S-spring; a second support member attached to said frame, said second support member being made of wire formed in an S-spring and being movable from substantially within a plane defined by said frame to a position forward of said plane; a third support member interposed between said first and second support members for interconnecting the same and movable with said second support member, said third support member being made of wire formed in an S-spring and connected to said first fixed support member and said second movable support member at a plurality of points; and a cam mounted for rotation on said frame, said cam having a groove formed thereon; a movable arm connected to said second support member; and a cam pin connected to said movable arm and engaging said groove so as to cause movement of said arm upon rotation of said cam, thereby moving said second support member and the interconnected first and third support members.
References Cited (Backward Citations)
US3178221A
Cited
US3241879A
Cited
US3378299A
Cited
US3890000A
Cited
US4019777A
Cited
US4162807A
Cited
DE2856784A1
Cited
US4296965A
Cited
US4182533A
Cited
US4309058A
Cited
US4295681A
Cited
US4449751A
Cited
US4576410A
Cited
US4588172A
Cited
US4565406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |