Patent US4106140A successfully refreshed from Google Patents.
US4106140A
Expired / Lapsed
US
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Body supporting furniture frame
Assignee: Bekaert NV SA
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Filing: 1977-02-11
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Granted: 1978-08-15
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Expires: 1997-02-11
Abstract
Abstract A body supporting furniture frame having two opposite longitudinal girders and a plurality of mutually parallel cross-girders disposed therebetween, wherein at least the edges of the cross-girders are provided with a lengthwise aperture in which a wire or bar is loosely inserted and the wires or bars are bent convexly upward in the longitudinal direction, and wherein the cross-section of each lengthwise aperture and the cross-section of the corresponding wire or bar are specially designed so that the wire or bar is blocked in the lengthwise aperture against rotation through an angle exceeding 90°.
Inventors
- 👤 Anton Kievits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:44
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/06; A47C23/061
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
105 words
In a body supporting furniture frame having two opposite longitudinal girders and a plurality of mutually parallel cross-girders disposed therebetween and wherein at least the edges of the cross-girders are provided with a lengthwise aperture in which a wire or bar is loosely inserted, and said wires or bars are bent convexly upward in the longitudinal direction, the improvement in accordance with which the cross-section of each lengthwise aperture and the cross-section of the corresponding wire or bar are designed with a mutually cooperating structural configuration such that the wire or bar is blocked in the lengthwise aperture against rotation through an angle exceeding 90°.
Claim 2
Dependent Claim
105 words
In a body supporting furniture frame having two opposite longitudinal girders and a plurality of mutually parallel cross-girders disposed therebetween and wherein at least the edges of the cross-girders are provided with a lengthwise aperture in which a wire or bar is loosely inserted, and said wires or bars are bent convexly upward in the longitudinal direction, the improvement in accordance with which the cross-section of each lengthwise aperture and the cross-section of the corresponding wire or bar are designed with a mutually cooperating structural configuration such that the wire or bar is blocked in the lengthwise aperture against rotation through an angle exceeding 90°.
Claim 3
Dependent Claim
57 words
A body supporting furniture frame as set forth in claim 1 wherein the cross-section of each lengthwise aperture and the cross-section of the corresponding wire or bar are designed with a mutually cooperating structural configuration such that the wire or bar in the lengthwise aperture is only able to rotate through an angle between 0° and 30°.
Claim 4
Dependent Claim
28 words
A body supporting furniture frame as set forth in claim 1 wherein the cross-section of said lengthwise apertures and said corresponding wire or bar are substantially square shaped.
Claim 5
Dependent Claim
17 words
A body supporting furniture frame set forth in claim 3 wherein the two cross-sections are substantially equal.
Claim 6
Dependent Claim
27 words
A body supporting furniture frame as set forth in claim 1 wherein the cross-sections of said lengthwise apertures and said corresponding wire or bar are substantially D-shaped.
Claim 7
Dependent Claim
33 words
A body supporting furniture frame as set forth in claim 1 wherein the cross-section of said lengthwise apertures is substantially square-shaped and the cross-section of said corresponding wire or bar is substantially U-shaped.
References Cited (Backward Citations)
US3842452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |