Patent US4108490A successfully refreshed from Google Patents.
US4108490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable chair
Assignee: Individual
•
Filing: 1977-07-05
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Granted: 1978-08-22
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Expires: 1997-07-05
Abstract
Abstract A foldable chair having a seat member and four legs at the corners of the seat member with the two front legs extending from the seat member downwardly and with the two rear legs extending both upwardly and downwardly from the seat member. Upper and lower sets of cross members are provided each connecting a rear leg with the diagonally opposite front leg and with the cross members pivotally interconnected at the intersections thereof. A collapsible back is connected between the upper ends of the rear legs and the seat member is pivotally connected near one corner to the adjacent leg. The seat can be collapsed by tilting the seat member upwardly about the pivotal connection thereof with a leg and pivoting the intersecting cross members relatively and which will cause the chair to collapse laterally and which will also collapse the back of the chair.
Inventors
- 👤 Jose Antonio T. Marin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:17
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/024; A47C4/00; A47C4/04; A47C4/08; A47C7/36; A47C7/40; A47C7/405
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
In a foldable chair; a generally rectangular, one-piece seat member, a pair of front legs having upper ends, a pair of rear legs, upper and lower pairs of overlapped cross members with each cross member connected at one end to a rear leg and at the other end of the front leg diagonally opposed to the respective rear leg, pivot means pivotally connecting the cross members of each pair at the region of overlap thereof, means including the top cross member of the upper pair of cross members for supporting said seat member in a substantially horizontal position with two front corners respectively in general alignment with said front leg upper ends when the chair is erected, and a single swivel connecting one of said front corners of the seat member to the respective front leg upper end whereby said seat member is adapted to be moved to a vertical position when the chair is folded.
Claim 2
Dependent Claim
156 words
In a foldable chair; a generally rectangular, one-piece seat member, a pair of front legs having upper ends, a pair of rear legs, upper and lower pairs of overlapped cross members with each cross member connected at one end to a rear leg and at the other end of the front leg diagonally opposed to the respective rear leg, pivot means pivotally connecting the cross members of each pair at the region of overlap thereof, means including the top cross member of the upper pair of cross members for supporting said seat member in a substantially horizontal position with two front corners respectively in general alignment with said front leg upper ends when the chair is erected, and a single swivel connecting one of said front corners of the seat member to the respective front leg upper end whereby said seat member is adapted to be moved to a vertical position when the chair is folded.
Claim 3
Dependent Claim
50 words
A foldable chair according to claim 1 in which the cross members extending from one of the rear legs to the diagonally opposed front leg comprise the upper cross member of one of the pairs of cross members and the lower cross member of the other pair of cross members.
Claim 4
Dependent Claim
46 words
A foldable chair according to claim 2 in which each rear leg and the diagonally opposed front leg and the cross members connected thereto form a subframe of the chair adapted for independent manufacture and for assembly with a mating subframe to form the chair frame.
Claim 5
Dependent Claim
25 words
A foldable chair according to claim 1 in which the top cross member of the upper pair thereof forms a support for the seat member.
Claim 6
Dependent Claim
71 words
A foldable chair according to claim 1 in which the upper ends of the front legs and the top surface of the top cross member of the upper pair thereof support the seat member when the chair is erected, and a support member on top of the bottom cross member of the upper pair adjacent the respective rear leg to provide further support for the respective corner of the seat member.
Claim 7
Dependent Claim
51 words
A foldable chair according to claim 1 wherein said rear legs include upper portions extending upwardly from said seat member when the chair is erected, and which includes a laterally collapsible back support connected to the upper portions of the rear legs and extending laterally therebetween when the chair is erected.
Claim 8
Dependent Claim
37 words
A foldable chair according to claim 6 in which said back support comprises panels having adjacent vertical edges hingedly interconnected and other vertical edges hingedly connected to said upper portions of the rear legs of the chair.
References Cited (Backward Citations)
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Cited
US484240A
Cited
US1136308A
Cited
US1368802A
Cited
US2374182A
Cited
US2468683A
Cited
DE1114996B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |