US4236260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sofa sleeper with polypropylene deck assembly
Assignee: Leggett and Platt Inc
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Filing: 1979-05-29
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Granted: 1980-12-02
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Expires: 1999-05-29
Abstract
Abstract A polypropylene fabric for a sofa sleeper mechanism which includes a conventional foldable frame having a plurality of relatively movable sections that are movable between side-by-side, bed-forming positions and vertically stacked seat-forming positions. The polypropylene fabric is mounted on the frame so as to form a yieldable support surface for a mattress or the like in the bed-forming position of the frame and also has the capability of functioning as the direct support for the usual sofa seat cushions in the seat-forming position of the frame.
Inventors
- 👤 Ned W. Mizelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:00
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/13; A47C17/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
In a sofa sleeper mechanism which includes an open foldable frame having relatively movable head, intermediate and foot sections movable to side-by-side, generally horizontal bed-forming positions, a deck assembly mounted on said frame so as to form a yieldable support surface for a mattress or the like in the bed-forming position of the frame, said assembly comprising a unitary sheet constructed principally of woven, heat treated polypropylene fibers, and yieldable means mounted on said frame and attached to said sheet so as to maintain said sheet in a substantially taut horizontal position in the bed-forming position of said frame.
Claim 2
Dependent Claim
99 words
In a sofa sleeper mechanism which includes an open foldable frame having relatively movable head, intermediate and foot sections movable to side-by-side, generally horizontal bed-forming positions, a deck assembly mounted on said frame so as to form a yieldable support surface for a mattress or the like in the bed-forming position of the frame, said assembly comprising a unitary sheet constructed principally of woven, heat treated polypropylene fibers, and yieldable means mounted on said frame and attached to said sheet so as to maintain said sheet in a substantially taut horizontal position in the bed-forming position of said frame.
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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |