Patent US3590404A successfully refreshed from Google Patents.
US3590404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge-reinforced inner spring for cushions
Assignee: Individual
•
Filing: 1970-03-11
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Granted: 1971-07-06
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Expires: 1990-03-11
Abstract
Abstract An inner spring unit for padded cushions, such as inner spring mattresses, which includes reinforcing springs for the edge or border wire frame members, but recessed to the unit within said frame members.
Inventors
- 👤 Wendel E Dreve Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:48
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/06; A47C27/066
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
A spring unit for cushions or the like having upper and lower faces spaced apart by coil springs and including upper and lower wire frames at the edges thereof, and means for reinforcing the edges thereof, said means comprising: reinforcing spring members inset within the wire frames and having spring portions in a vertical plane inset inwardly of the normal common vertical plane of said wire frames; and means for attaching said spring portions to said upper and lower wire frames.
Claim 2
Dependent Claim
81 words
A spring unit for cushions or the like having upper and lower faces spaced apart by coil springs and including upper and lower wire frames at the edges thereof, and means for reinforcing the edges thereof, said means comprising: reinforcing spring members inset within the wire frames and having spring portions in a vertical plane inset inwardly of the normal common vertical plane of said wire frames; and means for attaching said spring portions to said upper and lower wire frames.
Claim 3
Dependent Claim
61 words
A spring unit according to claim 1 in which said spring members each has a spring portion of V-form with legs joined at the vertex by a coil, said V-portion being in a plane parallel to the plane of said wire frame members and inset relative thereto, said attaching means connecting the divergent arms to the upper and lower wire frames.
Claim 4
Dependent Claim
80 words
A spring unit according to claim 3 in which said coil springs are disposed in transverse side-by-side rows and are tied together by helical wire ties and to adjacent wire frames by helical wires extending therealong, said attaching means for each spring portion of the reinforcing spring members comprising arms connected to the diverging ends of said V-portion and extending inwardly at right angles to the plane thereof, said arms engaging with the helical wire ties between said coil springs.
Claim 5
Dependent Claim
56 words
A spring unit according to claim 3 in which said legs are connected to the arms by U-shaped loops to inset the V-portion inwardly of the outer extremities of the arms, the ends of the said helical wire ties being hooked around said reinforcing spring members at said loops to prevent outward and inward movement thereof.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |