Patent US3783459A successfully refreshed from Google Patents.
US3783459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil spring anchor assembly
Assignee: Leggett and Platt Inc
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Filing: 1972-12-11
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Granted: 1974-01-08
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Expires: 1992-12-11
Abstract
Abstract A prefabricated spring anchor assembly is disclosed comprising a furniture slat along whose length U-shaped anchoring staples are partially embedded at substantially equal intervals. Protruding vertical legs of each staple are curved to form a pair of spring clenching fingers which serve, in cooperation with the bottom turn of a tapered coil spring, to lock the spring to the top surface of the slat.
Inventors
- 👤 J Piliero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:38
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/05
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
A coil spring anchor arrangement for securing the bottom turn of a coil spring to a furniture or bedding slat comprising a substantially U-shaped staple which is adapted to be driven through said slat and thereafter shaped to form clenching fingers to retain said bottom turn, said staple having a pair of legs one eNd of each leg being tapered and pointed and the opposite end of each leg being joined to a relatively straight bottom section, said staple being adapted with said tapered and pointed legs facing said slat to be driven through said slat until a prescribed portion of each leg protrudes from an opposite side of said slat, and wherein said prescribed portions of each leg are curved downwardly in opposite directions to each other to form clenching fingers to secure said bottom turn.
Claim 2
Dependent Claim
137 words
A coil spring anchor arrangement for securing the bottom turn of a coil spring to a furniture or bedding slat comprising a substantially U-shaped staple which is adapted to be driven through said slat and thereafter shaped to form clenching fingers to retain said bottom turn, said staple having a pair of legs one eNd of each leg being tapered and pointed and the opposite end of each leg being joined to a relatively straight bottom section, said staple being adapted with said tapered and pointed legs facing said slat to be driven through said slat until a prescribed portion of each leg protrudes from an opposite side of said slat, and wherein said prescribed portions of each leg are curved downwardly in opposite directions to each other to form clenching fingers to secure said bottom turn.
Claim 3
Dependent Claim
44 words
The invention set forth in claim 1 wherein the prescribed portions of each one of said legs are situated on a common longitudinal axis of said slat, and the downwardly curved portions lie substantially in the same plane which is parallel to said slat.
Claim 4
Dependent Claim
111 words
A coil spring anchoring arrangement for securing the bottom turn of a coil spring comprising a furniture or bedding slat through which a substantially U-shaped staple has been driven, said staple having a relatively straight bottom section which is in contact with a bottom surface of said slat and having upstanding legs which penetrate said slat such that portions of each leg extend beyond the opposite side surface of said slat; the last mentioned surface corresponding to a spring mounting surface, and the extending portions of each leg being curved respectively away from each other and lying in substantially the same plane which is substantially parallel to said spring mounting surface.
Claim 5
Dependent Claim
111 words
A coil spring anchoring arrangement for securing the bottom turn of a coil spring comprising a furniture or bedding slat through which a substantially U-shaped staple has been driven, said staple having a relatively straight bottom section which is in contact with a bottom surface of said slat and having upstanding legs which penetrate said slat such that portions of each leg extend beyond the opposite side surface of said slat; the last mentioned surface corresponding to a spring mounting surface, and the extending portions of each leg being curved respectively away from each other and lying in substantially the same plane which is substantially parallel to said spring mounting surface.
Claim 6
Dependent Claim
25 words
The invention recited in claim 3 wherein said upstanding legs are tapered and pointed thereby being adapted to be driven into and through said slat.
Claim 7
Dependent Claim
20 words
The invention recited in claim 3 wherein the upstanding legs are positioned along a common longitudinal axis of said slat.
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |