US3906557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drop in sofa bed
Assignee: Castro Convertibles Corp
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Filing: 1974-06-20
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Granted: 1975-09-23
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Expires: 1994-06-20
Abstract
Abstract The convertible sofa bed disclosed herein includes an independent peripheral base frame on which a folding sofa bed mechanism is removably mounted. An upholstered sofa frame is also removably mounted on the peripheral base frame; but it is independent of the sofa bed mechanism, so that the sofa frame can be removed from the base frame while the sofa mechanism remains on the base frame, available for operation.
Inventors
- 👤 Andrew A Barabas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:51
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/22; A47C17/225
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A convertible sofa bed comprising an independent peripheral base frame being generally rectangular in plan and having a peripheral outwardly extending unobstructed horizontal support surface formed thereon, a folding sofa bed mechanism mounted on said base, and a separate and independent upholstered sofa frame removably mounted on said base frame independently of said sofa bed mechanism, said sofa frame having an interior generally rectangular support frame which is complementary to said base frame and which has a peripheral bottom surface engaged with and supported on said unobstructed horizontal support surface, whereby said sofa frame is removable from said base frame while the sofa mechanism remains on the base frame available for operation; said folding bed mechanism being folded substantially entirely within the confines of said base frame to leave said outwardly extending support surface exposed and unobstructed for engagement with said support frame.
Claim 2
Dependent Claim
143 words
A convertible sofa bed comprising an independent peripheral base frame being generally rectangular in plan and having a peripheral outwardly extending unobstructed horizontal support surface formed thereon, a folding sofa bed mechanism mounted on said base, and a separate and independent upholstered sofa frame removably mounted on said base frame independently of said sofa bed mechanism, said sofa frame having an interior generally rectangular support frame which is complementary to said base frame and which has a peripheral bottom surface engaged with and supported on said unobstructed horizontal support surface, whereby said sofa frame is removable from said base frame while the sofa mechanism remains on the base frame available for operation; said folding bed mechanism being folded substantially entirely within the confines of said base frame to leave said outwardly extending support surface exposed and unobstructed for engagement with said support frame.
Claim 3
Dependent Claim
21 words
The convertible sofa bed as defined in claim 1 including means for removably securing said sofa frame to said base frame.
Claim 4
Dependent Claim
69 words
The convertible sofa bed as defined in claim 2 wherein said base frame is formed of generally L-shaped angle frame members having angularly related horizontally and vertically upwardly extending legs, said horizontal legs defining said sUpport surface and said vertical legs being located within the confines of said sofa support frame when the sofa frame is seated on said base, thereby to locate said sofa frame on said base.
Claim 5
Dependent Claim
37 words
The convertible sofa as defined in claim 3 wherein said vertical legs are located to closely mate with the interior of said sofa support frame, thereby to prevent shifting of said sofa frame on said base frame.
Claim 6
Dependent Claim
30 words
The convertible sofa as defined in claim 2 wherein said base frame includes a plurality of vertically extending mounting plates, and said sofa mechanism is removably secured to said plates.
Claim 7
Dependent Claim
45 words
The convertible sofa as defined in claim 2 wherein said sofa frame has a generally rectangular opening therein which is generally complementary to the sofa support frame and through which said sofa mechanism can be opened when the sofa frame is on said base 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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |