US4159146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chairs
Assignee: Rhone Poulenc Textile SA
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Filing: 1977-06-13
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Granted: 1979-06-26
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Expires: 1997-06-13
Abstract
Abstract A chair is disclosed which includes a filled seat portion and a filled back portion joined by a unitary, non-articulated semi-rigid connection integral with the seat portion and the back portion, the connection having a rebate therein, for example in the form of a step, a triangle, an arc, or a continuation thereof.
Inventors
- 👤 Daniel Braconnier
- 👤 Silvio Sangalli
- 👤 Joseph Puthon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:21
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/021; A47C3/029; A47C3/16; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/445
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
A chair comprising a unitary structure including a seat surface portion, a back surface portion, a semi-rigid connecting surface portion intermediate and integral with said seat and back portions, a substantially right-angle rebate formed in said connecting surface portion transversely of the chair, the right-angle of the rebate opening away from the seat and back surface portions whereby the effective flexing length of the connecting surface is substantially extended and an individual sitting in the chair causes said right-angle to flex toward an angle which is less than a right angle, and a rocker support comprising a sheet spring spanning and spaced from said connecting portion and secured at its opposite ends to said seat and back portions.
Claim 2
Dependent Claim
118 words
A chair comprising a unitary structure including a seat surface portion, a back surface portion, a semi-rigid connecting surface portion intermediate and integral with said seat and back portions, a substantially right-angle rebate formed in said connecting surface portion transversely of the chair, the right-angle of the rebate opening away from the seat and back surface portions whereby the effective flexing length of the connecting surface is substantially extended and an individual sitting in the chair causes said right-angle to flex toward an angle which is less than a right angle, and a rocker support comprising a sheet spring spanning and spaced from said connecting portion and secured at its opposite ends to said seat and back portions.
Claim 3
Dependent Claim
28 words
A chair according to claim 1 in which said sheet spring is secured to the seat portion thereof and to the back portion adjacent the upper portion thereof.
Claim 4
Dependent Claim
21 words
A chair according to claim 2 in which the sheet is formed of stainless steel sheet of about 1 millimeter thickness.
Claim 5
Dependent Claim
68 words
A chair comprising a unitary structure including a seat surface portion, a back surface portion, a semi-rigid connecting surface portion intermediate and integral with said seat and back portions, a rebate formed in said connecting surface portion transversely of the chair, and a rocker support comprising a sheet spring spanning and spaced from said connecting portion and secured at its opposite ends to said seat and back portions.
Claim 6
Dependent Claim
68 words
A chair comprising a unitary structure including a seat surface portion, a back surface portion, a semi-rigid connecting surface portion intermediate and integral with said seat and back portions, a rebate formed in said connecting surface portion transversely of the chair, and a rocker support comprising a sheet spring spanning and spaced from said connecting portion and secured at its opposite ends to said seat and back portions.
Claim 7
Dependent Claim
15 words
A chair according to claim 4 including interchangeable cushions on said seat and back portions.
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) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |