Patent US4608722A successfully refreshed from Google Patents.
US4608722A
Expired / Lapsed
US
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Armchair or sofa structure transformable into a bed
Assignee: STEMA Sas DI ZORZETTO RENATO & Co
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Filing: 1983-11-07
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Granted: 1986-09-02
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Expires: 2003-11-07
Abstract
Abstract Armchair or sofa structure transformable into a bed in which, during the passage from one state to the other, intermediate positions can be obtained. The structure can therefore be utilized not only as a bed and as a sofa with its back portion vertical, but also in other positions with the back portion variously inclined.
Inventors
- 👤 Renato Zorzetto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:25
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/16; A47C17/161; A47C17/162; A47C17/17
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
255 words
An armchair or sofa structure transformable into a bed of the type comprising, on a fixed base, a back portion including a front part and a rear part upperly hinged together, and a seat portion, the front part being connected to the seat portion, the seat portion being slidable relative to the base in the direction of a front of the structure, said sliding causing the two parts of the back portion to lie in one plane, wherein the seat portion includes a lower frame connected to the base by means which enable the lower frame to slide relative and parallel to the base, and an upper frame hinged to the lower frame and to the front part of the back portion, the upper frame of the seat portion being also connected to the front part of the back portion by a linkage comprising a rocker lever pivoted in its intermediate region to a frame of the structure, the rocker lever being connected at one end in a slidable manner to an arm fixed to the upper frame of the seat portion and at the other end to a telescopic snap-action positioner, the positioner being connected to the front part of the back portion, said positioner being extended when the upper frame is withdrawn from the lower frame, the extent of the extension being predetermined as a function of the extent of withdrawal of the upper frame from the lower frame, the positioner further including releasable means for retaining the positioner in the extended position.
Claim 2
Dependent Claim
255 words
An armchair or sofa structure transformable into a bed of the type comprising, on a fixed base, a back portion including a front part and a rear part upperly hinged together, and a seat portion, the front part being connected to the seat portion, the seat portion being slidable relative to the base in the direction of a front of the structure, said sliding causing the two parts of the back portion to lie in one plane, wherein the seat portion includes a lower frame connected to the base by means which enable the lower frame to slide relative and parallel to the base, and an upper frame hinged to the lower frame and to the front part of the back portion, the upper frame of the seat portion being also connected to the front part of the back portion by a linkage comprising a rocker lever pivoted in its intermediate region to a frame of the structure, the rocker lever being connected at one end in a slidable manner to an arm fixed to the upper frame of the seat portion and at the other end to a telescopic snap-action positioner, the positioner being connected to the front part of the back portion, said positioner being extended when the upper frame is withdrawn from the lower frame, the extent of the extension being predetermined as a function of the extent of withdrawal of the upper frame from the lower frame, the positioner further including releasable means for retaining the positioner in the extended position.
Claim 3
Dependent Claim
30 words
A structure as recited in claim 1, wherein the other end of the arm is provided with a pin, the pin being slidable in a slot of the rocker lever.
Claim 4
Dependent Claim
47 words
A struture as recited in claim 1 wherein the telescopic snap-action positioner includes a rod hinged to the end of the rocker lever, opposite to said arm and slidable in a sleeve, the sleeve pivoted to an intermediate region of the front part of the back portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |