Patent US3994482A successfully refreshed from Google Patents.
US3994482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring edge for furniture decks
Assignee: Leggett and Platt Inc
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Filing: 1975-11-12
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Granted: 1976-11-30
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Expires: 1995-11-12
Abstract
Abstract A spring edge for a furniture deck, the deck consisting of a wire fabric deck sheet resiliently supported over a rigid frame, the spring edge consisting of a series of generally V-shaped sinuous spring elements distributed along the forward edge of the frame, opening forwardly, the lower legs of the elements being fixedly related at their forward ends to the frame and deck, and the apices of the elements being connected to the deck for forward and rearward sliding movement, the upper legs of the spring elements being inclined upwardly and forwardly and supporting a transversely extending horizontal border wire at their upper ends.
Inventors
- 👤 John G. Platt
- 👤 Robert O. Isaacs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:54
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/287
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
199 words
In combination with a furniture seat including a rigid frame and a wire fabric deck sheet extending over said frame and being resiliently supported thereby for downward yieldability, a spring edge assembly extending across the forward edge of said seat and comprising: a. a series of spring elements spaced across the forward edge of said frame, each of said elements being substantially V-shaped in a vertical plane, opening forwardly, and having a generally horizontal lower leg and an upwardly and forwardly inclined upper leg, said spring element constituting a length of spring wire sinuous in a plane at right angles to its vertical V-plane whereby to present horizontal reaches transverse to said plane at least at the apex and at the free ends of the legs of said spring element, b. means securing the horizontal transverse reaches at the free ends of said lower legs to said frame, and c. means securing the horizontal transverse reaches at the apices of said spring elements to said deck sheet rearwardly of the forward edge of said deck sheet, said last named securing means being operable to permit relative forward and rearward sliding movement between said deck sheet and said spring elements.
Claim 2
Dependent Claim
199 words
In combination with a furniture seat including a rigid frame and a wire fabric deck sheet extending over said frame and being resiliently supported thereby for downward yieldability, a spring edge assembly extending across the forward edge of said seat and comprising: a. a series of spring elements spaced across the forward edge of said frame, each of said elements being substantially V-shaped in a vertical plane, opening forwardly, and having a generally horizontal lower leg and an upwardly and forwardly inclined upper leg, said spring element constituting a length of spring wire sinuous in a plane at right angles to its vertical V-plane whereby to present horizontal reaches transverse to said plane at least at the apex and at the free ends of the legs of said spring element, b. means securing the horizontal transverse reaches at the free ends of said lower legs to said frame, and c. means securing the horizontal transverse reaches at the apices of said spring elements to said deck sheet rearwardly of the forward edge of said deck sheet, said last named securing means being operable to permit relative forward and rearward sliding movement between said deck sheet and said spring elements.
Claim 3
Dependent Claim
53 words
The structure as recited in claim 1 wherein said transverse reach at the apex of each of said spring elements is connected to said deck sheet at at least two points spaced apart longitudinally along the length of said reach, whereby said reach is maintained generally in the plane of said deck sheet.
Claim 4
Dependent Claim
79 words
The structure as recited in claim 2 wherein said deck sheet includes a series of parallel, spaced apart spring wires extending forwardly and rearwardly beneath said spring elements, the transverse wire reach at the apex of each of said spring elements bridging and intersecting at least two of said deck wires, and wherein the means securing said reach to said deck sheet comprises a looped wire clip loosely encircling said spring element reach and each deck wire intersected thereby.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |