Patent US3973798A successfully refreshed from Google Patents.
US3973798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflectable chair back
Assignee: La Z Boy Inc
•
Filing: 1975-03-05
•
Granted: 1976-08-10
•
Expires: 1995-03-05
Abstract
Abstract The chair is preferably of the overstuffed type having a back which is separate from the seat. Brackets are provided on the sides of the seat and back forming a rod-receiving loop therewith. The loops are interconnected by heavy spring rods which permits the removal of the back for compact shipment and which permits the upholstered back to deflect relative to the upholstered seat frame and arms. The seat frame may be supported on a base by a rocking and swiveling mechanism or it may be fixed directly thereto.
Inventors
- 👤 David B. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:50
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/445; A47C3/00; A47C3/02; A47C3/025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
131 words
In a chair, a chair frame having a central seating area and an arm at each side, a supporting base, a back frame separate from said chair frame, upholstering material on said chair and back frames, a pair of unstressed spring rods for supporting said upholstered back frame at the rear of said chair frame to extend upwardly thereon so that the upholstering material at the sides of the back frame is in engagement with the upholstered material at the rear of the arms of said seat frame to provide the appearance of a continuous back frame on the chair frame, said back frame being deflectable rearwardly on said spring rods which are hidden beneath the upholstering material on said back frame which is in engagement with that on said arms.
Claim 2
Dependent Claim
131 words
In a chair, a chair frame having a central seating area and an arm at each side, a supporting base, a back frame separate from said chair frame, upholstering material on said chair and back frames, a pair of unstressed spring rods for supporting said upholstered back frame at the rear of said chair frame to extend upwardly thereon so that the upholstering material at the sides of the back frame is in engagement with the upholstered material at the rear of the arms of said seat frame to provide the appearance of a continuous back frame on the chair frame, said back frame being deflectable rearwardly on said spring rods which are hidden beneath the upholstering material on said back frame which is in engagement with that on said arms.
Claim 3
Dependent Claim
29 words
In a chair as recited in claim 1, wherein said spring rods are straight with the upper ends supporting said back frame in a manner to conceal said rods.
Claim 4
Dependent Claim
35 words
In a chair as recited in claim 2, wherein said back frame is movable upwardly from the upper end of said spring rods and disposable on the seat frame between said arms for compact shipment.
Claim 5
Dependent Claim
81 words
In a chair as recited in claim 3, wherein a pair of brackets are mounted on the upholstered seat frame adjacent to the rear end of said arms, and wherein a pair of brackets is mounted at the sides of said upholstered back frame, the ends of said rods extending into said brackets for supporting said back unit on the frame unit in a manner to hide the brackets and rods between the upholstery material on said back frame and arms.
Claim 6
Dependent Claim
37 words
In a chair as recited in claim 4, wherein said brackets on the chair frame have an aperture forming socket which presents upwardly and said brackets on the back frame have aperture forming sockets which present downwardly.
Claim 7
Dependent Claim
60 words
In a chair as recited in claim 4, wherein said back frame is slid downwardly at the rear end of the arms into supporting engagement with the upper ends of the rods and with the upholstering material at the rear of the seat frame and arms and that at the sides of the back frame in engagement with each other.
References Cited (Backward Citations)
US518097A
Cited
US606992A
Cited
US2032288A
Cited
US1150189A
Cited
US1998090A
Cited
US2109697A
Cited
US2570177A
Cited
US2764224A
Cited
US3036864A
Cited
US3525549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |