US4083068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable article of furniture
Assignee: Individual
•
Filing: 1976-11-17
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Granted: 1978-04-11
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Expires: 1996-11-17
Abstract
Abstract An adjustable article of furniture, particularly an adjustable bed, has a frame and a backrest mounted on the frame for pivoting between a substantially horizontal rest position and an upright position. A leaf spring, or a plurality of such springs, is supported on the frame and urges the backrest toward its upright position. A section of the spring constitutes a seat support for the article of furniture, and can be deflected downwardly to a limited extent concurrently with pivoting of the backrest toward its upright position, from the generally straight configuration which the spring assumes when the backrest is in its rest position. The end of the spring which acts on the backrest is freely displaceable relative to the latter, either by being in sliding contact therewith, or by interposing anti-friction bearing means between the backrest and the respective end of the spring. An extension at the other end of the spring supports and biases a legrest toward a predetermined position of the same. A center portion of the spring is supported on the frame with freedom of limited displacement relative thereto to permit sagging of the seat in the upright position of the backrest. Extensions of the legrest and/or the backrest support the seat portion of the spring from underneath in the rest position of the backrest.
Inventors
- 👤 Gunther Bohme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:31
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/022; A47C1/024; A47C1/026; A47C17/00; A47C17/04; A47C17/16; A47C17/162; A47C17/163; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/445; A47C7/50; A47C7/506; A47C7/5066; A61; A61G; A61G7/00; A61G7/002; A61G7/015
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
133 words
In an adjustable article of furniture, particularly adjustable bed, a combination comprising a frame having a central plane and a first and a second region spaced from one another along said central plane; a backrest; means for mounting said backrest on said first region of said frame for pivoting along said central plane between a substantially horizontal rest position and an upright position; and means for urging said backrest toward said upright position thereof, including at least one resiliently bendable elongated spring having one portion connected to said frame at said second region of the latter, another portion acting on said backrest in and inbetween said positions of the latter, and an additional portion located intermediate said one and other portions of said spring and supported on said frame at said first region.
Claim 2
Dependent Claim
133 words
In an adjustable article of furniture, particularly adjustable bed, a combination comprising a frame having a central plane and a first and a second region spaced from one another along said central plane; a backrest; means for mounting said backrest on said first region of said frame for pivoting along said central plane between a substantially horizontal rest position and an upright position; and means for urging said backrest toward said upright position thereof, including at least one resiliently bendable elongated spring having one portion connected to said frame at said second region of the latter, another portion acting on said backrest in and inbetween said positions of the latter, and an additional portion located intermediate said one and other portions of said spring and supported on said frame at said first region.
Claim 3
Dependent Claim
14 words
A combination as defined in claim 1, wherein said spring is a leaf spring.
Claim 4
Dependent Claim
24 words
A combination as defined in claim 1, wherein said other portion of said spring is in sliding contact with a portion of said backrest.
Claim 5
Dependent Claim
24 words
A combination as defined in claim 1; and further comprising anti-friction bearing means interposed between said backrest and said other portion of said spring.
Claim 6
Dependent Claim
16 words
A combination as defined in claim 4, wherein said bearing means includes at least one roller.
Claim 7
Dependent Claim
36 words
A combination as defined in claim 1, wherein a section of said spring which extends between said one and said additional portions of said spring constitutes a resilient seat support intermediate said regions of said frame.
Claim 8
Dependent Claim
33 words
A combination as defined in claim 6; and further comprising means for supporting said additional portion of said spring on said frame for limited displacement relative thereto, including at least one support member.
Claim 9
Dependent Claim
22 words
A combination as defined in claim 7, wherein said additional portion of said spring is in sliding contact with said support member.
Claim 10
Dependent Claim
28 words
A combination as defined in claim 7, wherein said supporting means further includes anti-friction bearing means interposed between said support member and said additional portion of said spring.
Claim 11
Dependent Claim
41 words
A combination as defined in claim 7, wherein said mounting means for said backrest includes a pivot shaft extending substantially normal to said central plane; and wherein said pivot shaft constitutes said support member for said additional portion of said spring.
Claim 12
Dependent Claim
31 words
A combination as defined in claim 7, wherein said supporting means further includes means for limiting the extent of movement of said additional portion of said spring relative to said frame.
Claim 13
Dependent Claim
61 words
A combination as defined in claim 11, wherein said limiting means includes an additional section of said spring which adjoins said additional portion of said spring and extends at an angle to the latter toward said other portion of said spring, and operative for abutting against said support member and thus terminating the movement of said additional portion of said spring.
Claim 14
Dependent Claim
60 words
A combination as defined in claim 7; further comprising a legrest mounted on said other region of said frame for tilting relative thereto along said central plane; and wherein said spring has an auxiliary portion which is offset from said one portion longitudinally of said spring and which acts on said legrest to urge the same toward a predetermined position.
Claim 15
Dependent Claim
27 words
A combination as defined in claim 13, wherein said auxiliary portion is an extension portion of said spring which extends beyond said other region of said frame.
Claim 16
Dependent Claim
37 words
A combination as defined in claim 13, wherein said legrest includes a reinforcing portion which extends beyond the tilting axis of said legrest to support at least a part of said section of said spring from underneath.
Claim 17
Dependent Claim
43 words
A combination as defined in claim 7, wherein said backrest includes an extension which extends beyond the pivoting axis of said backrest and supports at least a part of said section of said spring from underneath in said rest position of said backrest.
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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |