US4439878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sofa sleeper with seat adjustment mechanism
Assignee: Leggett and Platt Inc
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Filing: 1982-04-22
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Granted: 1984-04-03
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Expires: 2002-04-22
Abstract
Abstract A sofa sleeper having a foldable bed frame connected by a collapsible frame support linkage with a sofa frame. The collapsible frame support linkage includes a novel styling structure that permits the pitch of the seat, when the bed frame is in the sofa position, to be adjusted as desired. This styling structure, in preferred form, includes a styling link incorporated in the collapsible frame support linkage that cooperates with a vertically adjustable styling bolt mounted on the sofa frame. The abutment position of the styling link against the styling bolt, which position depends on the vertical location of the styling bolt relative to ground, determines the collapsed position of the collapsible frame support linkage, thereby establishing the seat pitch of the sofa.
Inventors
- 👤 John E. Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:50
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/22; A47C17/225
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
156 words
A sofa sleeper comprising a sofa frame, a bed frame having at least a head frame section and a foot frame section, said sections being foldable relative one to the other between an extended bed position and a folded up sofa position, a base plate fixedly connected to said sofa frame, a collapsible frame support linkage, said support linkage being connected to said bed frame and to said sofa frame, said linkage functioning to extend said bed frame from sofa position, and to retract said bed frame into sofa position, with said sofa frame, said support linkage including a styling link and a styling bolt threadedly mounted on said base plate and engageable with said styling link, said styling bolt being adjustable between plural styling positions, the pitch of the seat plane defined by the folded up bed frame when in the sofa position being increased or decreased in response to adjustment of said styling bolt.
Claim 2
Dependent Claim
156 words
A sofa sleeper comprising a sofa frame, a bed frame having at least a head frame section and a foot frame section, said sections being foldable relative one to the other between an extended bed position and a folded up sofa position, a base plate fixedly connected to said sofa frame, a collapsible frame support linkage, said support linkage being connected to said bed frame and to said sofa frame, said linkage functioning to extend said bed frame from sofa position, and to retract said bed frame into sofa position, with said sofa frame, said support linkage including a styling link and a styling bolt threadedly mounted on said base plate and engageable with said styling link, said styling bolt being adjustable between plural styling positions, the pitch of the seat plane defined by the folded up bed frame when in the sofa position being increased or decreased in response to adjustment of said styling bolt.
Claim 3
Dependent Claim
33 words
A sofa sleeper as set forth in claim 1, said base plate comprising an angle member having a horizontal flange, said styling bolt being threadedly mounted for vertical adjustment to said horizontal flange.
Claim 4
Dependent Claim
78 words
A sofa sleeper as set forth in claim 1, said collapsed frame support linkage comprising a rear support link pivoted at one end to said base plate and at the other end to said bed frame's head section, and a front support link pivoted at one end to said bed frame's head section and at the other end to one end of said styling link, the other end of said styling link being pivoted to said base plate.
Claim 5
Dependent Claim
47 words
A sofa sleeper as set forth in claim 3, said styling link defining a stop edge that is positioned at an acute angle relative to a phantom line that connects the pivot connections of said styling link with said front support link and with said base plate.
Claim 6
Dependent Claim
181 words
In a sofa sleeper having a sofa frame, a base plate adapted to be fixedly secured to said sofa frame, a bed frame having at least a head frame section and a foot frame section wherein said sections are foldable relative one to the other between an extended-out bed position and a folded-up sofa position, a collapsible frame support linkage connecting said bed frame and said base plate, said frame support linkage functioning to extend said bed frame from its sofa position and to retract said bed frame into its sofa position relative to said base plate, the improvement comprising said frame support linkage including a styling link and a styling bolt adjustably connected to said base plate, said styling bolt being adjustable between plural styling positions, said styling bolt cooperating with said styling link to locate the front edge elevation of said bed frame in retracted position within said sofa frame, the pitch of the seat plane defined by the folded-up bed frame when in the sofa position being increased or decreased in response to adjustment of said styling bolt.
Claim 7
Dependent Claim
181 words
In a sofa sleeper having a sofa frame, a base plate adapted to be fixedly secured to said sofa frame, a bed frame having at least a head frame section and a foot frame section wherein said sections are foldable relative one to the other between an extended-out bed position and a folded-up sofa position, a collapsible frame support linkage connecting said bed frame and said base plate, said frame support linkage functioning to extend said bed frame from its sofa position and to retract said bed frame into its sofa position relative to said base plate, the improvement comprising said frame support linkage including a styling link and a styling bolt adjustably connected to said base plate, said styling bolt being adjustable between plural styling positions, said styling bolt cooperating with said styling link to locate the front edge elevation of said bed frame in retracted position within said sofa frame, the pitch of the seat plane defined by the folded-up bed frame when in the sofa position being increased or decreased in response to adjustment of said styling bolt.
Claim 8
Dependent Claim
32 words
An improvement as set forth in claim 5, said base plate comprising an angle member having a horizontal flange, said styling bolt being threadedly mounted for vertical adjustment to said horizontal flange.
Claim 9
Dependent Claim
77 words
An improvement as set forth in claim 5, said collapsible frame support linkage comprising a rear support link pivoted at one end to said base plate and at the other end to said bed frame's head section, and a front support link pivoted at one end to said bed frame's head section and at the other end to one end of said styling link, the other end of said styling link being pivoted to said base plate.
Claim 10
Dependent Claim
46 words
An improvement as set forth in claim 7, said styling link defining a stop edge that is positioned at an acute angle relative to a phantom line that connects the pivot connection of said styling link with said front support link and with said base plate.
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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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |