US3665529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frame for box spring assembly
Assignee: Hoover Group Inc
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Filing: 1970-07-21
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Granted: 1972-05-30
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Expires: 1990-07-21
Abstract
Abstract A box spring frame having side and end rails made of wood and cross rails and a support bar made of sheet metal. The cross rails and the support bar have interlocking means formed out of the sheet metal which can be interconnected in a stressed condition as an incident to assembling the prefabricated parts.
Inventors
- 👤 Walter V Slominski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:44
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/12; A47C23/14; A47C23/15; A47C23/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
A generally rectangular frame for a box spring assembly comprising connected side and end rails, a longitudinally extending support bar extending between and supported on said end rails, a plurality of cross rails extending between and supported at longitudinally spaced locations on said side rails and on said support bar, , pairs of tabs facing in opposite directions struck out of said cross rails, and laterally extending flanges on said support bar held in a stressed condition between the tabs in each said pair of tabs so as to maintain said crossrails and said support bar in interlocked relation.
Claim 2
Dependent Claim
99 words
A generally rectangular frame for a box spring assembly comprising connected side and end rails, a longitudinally extending support bar extending between and supported on said end rails, a plurality of cross rails extending between and supported at longitudinally spaced locations on said side rails and on said support bar, , pairs of tabs facing in opposite directions struck out of said cross rails, and laterally extending flanges on said support bar held in a stressed condition between the tabs in each said pair of tabs so as to maintain said crossrails and said support bar in interlocked relation.
Claim 3
Dependent Claim
70 words
The frame that is defined in claim 1, wherein the tabs of each of said pairs are in spaced relation with the distal ends thereof facing one another, and said support bar has a body portion of a generally U-shaped cross section and laterally outwardly projecting flanges at the upper ends thereof, said flanges fitting into said tabs and being urged thereinto by the prestressed condition of said body portion.
Claim 4
Dependent Claim
32 words
The frame that is defined in claim 1, wherein said one interlocked part is adapted to be prestressed as an incident to its being fitted in interlocking relation with the other part.
Claim 5
Dependent Claim
43 words
The frame that is defined in claim 2, wherein said crossrails are U-channel members having a bottom wall, said tabs being struck out of said bottom wall so as to be inclined downwardly with respect to the longitudinal axes of said cross rails.
Claim 6
Dependent Claim
22 words
The frame that is defined in claim 2 wherein said body portion of a generally U-shaped cross-section has its legs diverging outwardly.
Claim 7
Dependent Claim
20 words
The frame that is defined in claim 4, wherein each of said tabs are deformed to stiffen them against bending.
Claim 8
Dependent Claim
44 words
The frame that is defined in claim 4, wherein said cross rails are U-channel members having a bottom wall and upright side walls, said tabs being struck out of said bottom wall and deflected so as to be extensions of said upright side walls.
References Cited (Backward Citations)
US1378921A
Cited
US1585279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |