US4050738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat frames
Assignee: L&P Swiss Holding GmbH
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Filing: 1975-08-13
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Granted: 1977-09-27
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Expires: 1995-08-13
Abstract
Abstract A frame for an automobile seat or a domestic seat comprises a base frame; a pad which consists of a series of parallel cords and a series of parallel cross-wires, and is suspended over the base frame; spring elements having torsion parts secured to the cords of the pad; and an edge frame mounted above the base frame on limbs of said spring elements which extend upwardly and outwardly from the side edge regions of the pad and are secured at their upper ends to said edge frame. The spring elements have lengths which may be anchored on said pad or on said base frame, and spring elements of both forms may be employed.
Inventors
- 👤 David Thomas Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:12
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
204 words
A seat frame comprising: a base frame, b. a cushion support including longitudinally extending side wire portions and a plurality of spaced, transversely extending cross wires anchored between said side wire portions, c. a plurality of tension spring means anchored between said side wire portions and said base frame to suspend said cushion support in tension transversely with respect to said base frame, d. a plurality of spaced spring elements each comprising a central portion extending transversely between said side wire portions, intermediate torsional portions extending parallel with and adjacent said side wire portions, and end portions extending transversely and outwardly from said torsional portions, in an upward direction from and at an obtuse angle to said cushion support, e. means loosely connecting each of said torsional spring element portions to the adjacent side wire portion of said cushion support along a substantial portion of the length of the former, f. an edge frame arranged above said cushion support and including resilient edge wire portions extending adjacent the free ends of the end portions of said spring elements at the respective sides of the seat, and g. means connecting the free ends of the end portions of said spring elements to said edge frame.
Claim 2
Dependent Claim
204 words
A seat frame comprising: a base frame, b. a cushion support including longitudinally extending side wire portions and a plurality of spaced, transversely extending cross wires anchored between said side wire portions, c. a plurality of tension spring means anchored between said side wire portions and said base frame to suspend said cushion support in tension transversely with respect to said base frame, d. a plurality of spaced spring elements each comprising a central portion extending transversely between said side wire portions, intermediate torsional portions extending parallel with and adjacent said side wire portions, and end portions extending transversely and outwardly from said torsional portions, in an upward direction from and at an obtuse angle to said cushion support, e. means loosely connecting each of said torsional spring element portions to the adjacent side wire portion of said cushion support along a substantial portion of the length of the former, f. an edge frame arranged above said cushion support and including resilient edge wire portions extending adjacent the free ends of the end portions of said spring elements at the respective sides of the seat, and g. means connecting the free ends of the end portions of said spring elements to said edge frame.
Claim 3
Dependent Claim
44 words
An edge frame as recited in claim 1 wherein each of said spring elements comprises a single length of spring wire, said central portion and one of the end portions thereof extending respectively from the opposite ends of one of said intermediate torsional portions.
Claim 4
Dependent Claim
94 words
A seat frame as recited in claim 1 wherein the side wire portions of said cushion support, and said spring elements, each constitute a cord consisting of a wire core and an outer layer of a relatively softer material, and wherein said means connecting the torsional portions of each of said spring elements to the side wires of said cushion support comprises a clamp encircling these cords in gripping engagement with the outer coverings thereof, whereby the wire core of the torsional portion of said spring element may yield torsionally within its outer covering.
References Cited (Backward Citations)
US2925855A
Cited
US3024016A
Cited
GB1153060A
Cited
US3610688A
Cited
US3639002A
Cited
US3727980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |