US4343509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piece of seating furniture
Assignee: Inter Ikea AS
•
Filing: 1980-04-02
•
Granted: 1982-08-10
•
Expires: 2000-04-02
Abstract
Abstract A piece of seating furniture, preferably a sofa, comprising a possibly upholstered frame (11) of tubes, some of the tubes (11e, 11f) curving slightly downwards and functioning as a support for loosely placed, coherent seats and backs (2a, 2b) freely pivotal about their connecting line. The piece of seating furniture permits an easy angle adjustment between seat and back and is easy to disassemble and assemble.
Inventors
- 👤 Gillis Lundgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:17
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/02; A47C4/028; A47C17/00; A47C17/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
203 words
A piece of seating furniture shaped as a sofa comprising a hollow upwardly open lower part (1) having a tube frame (11) with two side member-forming frame portions (11a, 11b) and separated front and rear supporting portions (1a, 1b) respectively provided with upwardly and downwardly curved supporting surfaces (1a', 1b'), said supporting portions being a pair of front auxiliary tubes (11c, 11d) and a pair of rear auxiliary tubes (11e, 11f), both pairs of auxiliary tubes being connected to the side member frame portions, a preferably H-shaped bracing member (19) made of tube provided between the supporting portions (1a, 1b), and at least two seat and back units (2a, 2b) loosely arranged on top of the lower part (1) and resting on the supporting portions and being unconnected thereto, said seat-and back units each having a seat portion and a back portion with each of said portions having a substantially planar top surface and a back surface which is slightly curved to have a curvature corresponding to the curvature of said supporting surfaces, said seat and back portions being connected together to form an angle (α) of about 90-120 degrees with respect to each other, said angle for said units being seperately adjustable.
Claim 2
Dependent Claim
203 words
A piece of seating furniture shaped as a sofa comprising a hollow upwardly open lower part (1) having a tube frame (11) with two side member-forming frame portions (11a, 11b) and separated front and rear supporting portions (1a, 1b) respectively provided with upwardly and downwardly curved supporting surfaces (1a', 1b'), said supporting portions being a pair of front auxiliary tubes (11c, 11d) and a pair of rear auxiliary tubes (11e, 11f), both pairs of auxiliary tubes being connected to the side member frame portions, a preferably H-shaped bracing member (19) made of tube provided between the supporting portions (1a, 1b), and at least two seat and back units (2a, 2b) loosely arranged on top of the lower part (1) and resting on the supporting portions and being unconnected thereto, said seat-and back units each having a seat portion and a back portion with each of said portions having a substantially planar top surface and a back surface which is slightly curved to have a curvature corresponding to the curvature of said supporting surfaces, said seat and back portions being connected together to form an angle (α) of about 90-120 degrees with respect to each other, said angle for said units being seperately adjustable.
Claim 3
Dependent Claim
28 words
A piece of seating furniture as claimed in claim 1, wherein the bracing member (19) is secured to the supporting portions by means of catching pins and screws.
Claim 4
Dependent Claim
40 words
A piece of seating furniture as claimed in claim 1, wherein the rear supporting portion (1b) is higher than the front supporting portion (1a) and preferably of a height of about 1.75-2.0 times the height of the front supporting portion.
Claim 5
Dependent Claim
61 words
A piece of seating furniture as claimed in claim 1, wherein the lower part (1) is coated with textile by having a circumferential tube of textile (2) applied, said textile tube being slotted during the application, but after the application the slot is closed by means of one or more closing means (23) such as hooks, snap fasteners or circumferential zippers.
Claim 6
Dependent Claim
29 words
A piece of seating furniture as claimed in claim 4, wherein the textile tube (21) is made of quilted fabric, preferably a heavily inflammable fabric or a non-inflammable fabric.
Claim 7
Dependent Claim
44 words
A piece of seating furniture as claimed in claim 1, wherein the side member frame portions (11a, 11b) comprise a separate upholstery, preferably of threads (31), said threads being tightened by means of springs (32), as well as a coating (33) of foam plastics.
Claim 8
Dependent Claim
52 words
A piece of seating furniture as claimed in claim 1, where the seat portion of the seat- and back unit (2a, 2b) on its underside comprises one or more hook members (41) stabilizing said unit without preventing an easy adjustment of the angle of the seat portion relative to the horizontal plane.
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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) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |