US3634893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sofa bed assembly
Assignee: Lear Siegler Inc
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Filing: 1969-11-25
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Granted: 1972-01-18
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Expires: 1989-11-25
Abstract
Abstract A sofa bed assembly including a support means, a seat frame, a back frame, and connection means supporting the frames on the support means for pivotal movement relative to one another and movement between an upright seat position and a lowered bed position. A pair of reaction plates extend from the back frame and a pair of cam members are rotatably connected to the seat frame in a pendulum manner and include lower cam surfaces which engage the top surfaces of the reaction plates upon upward pivotal movement of the seat frame when the bed position so that upon downward movement thereafter the back frame is moved to the upright seat position. Upon slight upward pivotal movement of the seat frame when in the seat position, the cams will fall under the force of gravity to a release position whereby the frames may be moved to the bed position. There is also included a latch means comprising a flange extending from the support means to coact with a slot in a rear member of the seat frame. The slot is disposed in an overlapping position above and rearwardly of the flange when the assembly is in the seat position whereby the flange may be moved through the slot to the overlapping position as the frames are moved to the seat position to prevent movement of the frames by coaction of the flange and the rear member of the seat frame until the seat frame is pivoted upward slightly to align the slot with the flange whereby it may be moved forwardly to move the rear member forwardly of the flange.
Inventors
- 👤 John F Hern
- 👤 Zygmunt M Surletta
- 👤 Bob D Michaluk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:37
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/16; A47C17/17; A47C17/161
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
105 words
A sofa bed assembly comprising; support means, a seat frame, a back frame, connection means supporting said frames on said support means for pivotal movement relative to one another and movement between an upright seat position and a lowered bed position, and cam means movable to a locked position reacting between said frames for moving said back frame from said bed position to said seat position and for automatically moving to a release position when said frames are in said seat position and said seat frame is pivoted upwardly relative to said back frame to allow said frames to be moved to said bed position.
Claim 2
Dependent Claim
105 words
A sofa bed assembly comprising; support means, a seat frame, a back frame, connection means supporting said frames on said support means for pivotal movement relative to one another and movement between an upright seat position and a lowered bed position, and cam means movable to a locked position reacting between said frames for moving said back frame from said bed position to said seat position and for automatically moving to a release position when said frames are in said seat position and said seat frame is pivoted upwardly relative to said back frame to allow said frames to be moved to said bed position.
Claim 3
Dependent Claim
58 words
An assembly as set forth in claim 1 wherein said cam means includes reaction means extending from said back frame and a cam member rotatably connected to said seat frame for engaging said reaction means in the locked position and for pivoting to said release position out of engagement with said reaction means under the force of gravity.
Claim 4
Dependent Claim
196 words
An assembly as set forth in claim 2 wherein said reaction means extends forwardly from said back frame when in said bed position and includes a front end and a top surface extending rearwardly from the upper extremity of said front end, said connection means includes pivot means movably supported by said support means and pivotally interconnecting with said seat frame and said reaction means at a point rearwardly of said front end of said reaction means, said cam member including a downwardly facing cam surface when said cam member is in said release position and said assembly is in said bed position, said cam member being rotatably connected to said seat frame forwardly of said front end of said reaction means so that said cam member engages said front end of said reaction means as said seat frame is pivoted upwardly from said bed position until said cam member clears the upper extremity of said front end and rotates under the force of gravity to a position where said cam surface engages said top surface of said reaction means as said seat frame is pivoted downwardly for moving said back frame to said seat position.
Claim 5
Dependent Claim
90 words
An assembly as set forth in claim 3 wherein said cam surface of said cam member is closer to the axis of rotation of said cam member in a rearward direction as said cam member is in said release position for allowing said cam member to rotate under the force of gravity from said locked position where said cam surface engages said reaction means to said release position out of engagement with said reaction means in response to upward pivotal movement of said seat frame when in said seat position.
Claim 6
Dependent Claim
42 words
An assembly as set forth in claim 4 wherein said reaction means includes a reaction plate attached to each side of said back frame, and including a pair of cam members with one rotatably connected to each side of said seat frame.
Claim 7
Dependent Claim
31 words
An assembly as st forth in claim 5 including latch means for retaining said frames in said seat position and for allowing said frames to be moved to said bed position.
Claim 8
Dependent Claim
25 words
An assembly as set forth in claim 6 wherein said support means includes a track to support said pivot means for forward and rearward movement.
Claim 9
Dependent Claim
39 words
An assembly as set forth in claim 7 wherein said connection means further includes a linkage means pivotally connected at a first extremity thereof of said back frame and pivotally connected at a second extremity thereof to said track.
Claim 10
Dependent Claim
36 words
An assembly as set forth in claim 8 wherein said linkage means comprises a link on each side of said back frame and pivotally connected thereto intermediate the front and rear extremities of said back frame.
Claim 11
Dependent Claim
42 words
An assembly as set forth in claim 9 wherein said linkage means comprises an auxiliary frame pivotally connected to said back frame at the rear extremity thereof and being a part of the bed when the assembly is in saId bed position.
Claim 12
Dependent Claim
37 words
An assembly as set forth in claim 8 wherein said reaction plates are attached to said back frame with means for allowing a limited amount of relative pivotal movement between said reaction plates and said back frame.
Claim 13
Dependent Claim
121 words
An assembly as set forth in claim 6 wherein said latch means is defined by a flange extending from said support means, a rear member of said seat frame having a slot therein which is disposed in an overlapping position above and rearwardly of said flange when the assembly is in said seat position so that said flange may be moved through said slot and to said overlapping position as the frames are moved to said seat position for preventing forward movement of said frames by coaction between said flange and said rear member until said seat frame is pivoted upward slightly to align said slot with said flange and moved forwardly to move said rear member forwardly of said flange.
Claim 14
Dependent Claim
174 words
A sofa bed assembly comprising; support means, a seat frame, a back frame, connection means supporting said frames on said support means for pivotal movement relative to one another and movement between an upright seat position and a lowered bed position, a flange extending from said support means, said seat frame including a rear member with a slot therein, said rear member being movable from one side of said flange to the other in moving between said seat and bed positions, said slot being disposed in an overlapping position above and rearwardly of said flange when the assembly is in said seat position so that the flange may be moved through said slot to said overlapping position as said rear member is moved rearwardly therepast in moving to said seat position for preventing forward movement of said frames by coaction between said flange and said rear member until said seat frame is pivoted upward slightly to align said slot with said flange and moved forwardly to move said rear member forwardly of said flange.
Claim 15
Dependent Claim
174 words
A sofa bed assembly comprising; support means, a seat frame, a back frame, connection means supporting said frames on said support means for pivotal movement relative to one another and movement between an upright seat position and a lowered bed position, a flange extending from said support means, said seat frame including a rear member with a slot therein, said rear member being movable from one side of said flange to the other in moving between said seat and bed positions, said slot being disposed in an overlapping position above and rearwardly of said flange when the assembly is in said seat position so that the flange may be moved through said slot to said overlapping position as said rear member is moved rearwardly therepast in moving to said seat position for preventing forward movement of said frames by coaction between said flange and said rear member until said seat frame is pivoted upward slightly to align said slot with said flange and moved forwardly to move said rear member forwardly of said flange.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |