Patent US3850476A successfully refreshed from Google Patents.
US3850476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tip-up seating
Assignee: Hille International Ltd
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Filing: 1973-08-27
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Granted: 1974-11-26
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Expires: 1993-08-27
Abstract
Abstract A chair with a tip-up seat comprises a mounting and support frame having two spaced tubular metal uprights joined by at least one cross member, an injection moulded back rest member formed with sockets adjacent its side edges and receiving the upper ends of the tubular uprights, seat brackets secured to and extending forwardly from the uprights, an injection moulded seat member having a peripheral downturned flange, metal reinforcing members extending parallel to and within the flange adjacent each side edge of the seat member and secured to the latter, bushings extending from each side of the seat member through the flange and said reinforcing members, hinge pins extending through said seat brackets into said bushings to hinge the seat member to the support frame, and a counterweight attached beneath the rear of the seat member, the reinforcing members being formed with outturned flanges which engage the seat brackets when the seat member is tipped down.
Inventors
- 👤 R Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:27
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/12; A47C1/121
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
144 words
A chair with a tip-up seat comprising a mounting and supPort frame having two spaced tubular metal uprights joined by at least one cross member, an injection moulded back rest member having socket means adjacent its side edges receiving the upper ends of the tubular uprights, seat brackets secured to and extending forwardly from the uprights, an injection moulded seat member having a peripheral downturned flange, metal reinforcing members extending parallel to and within the flange adjacent each side edge of the seat member and secured to the seat member, bushings extending from each side of the seat member through said flange and said reinforcing members, hinge pins extending through said seat brackets into said bushings hinging the seat member to the support frame, the reinforcing members being formed with outturned flanges which engage the seat brackets when the seat member is tipped down.
Claim 2
Dependent Claim
144 words
A chair with a tip-up seat comprising a mounting and supPort frame having two spaced tubular metal uprights joined by at least one cross member, an injection moulded back rest member having socket means adjacent its side edges receiving the upper ends of the tubular uprights, seat brackets secured to and extending forwardly from the uprights, an injection moulded seat member having a peripheral downturned flange, metal reinforcing members extending parallel to and within the flange adjacent each side edge of the seat member and secured to the seat member, bushings extending from each side of the seat member through said flange and said reinforcing members, hinge pins extending through said seat brackets into said bushings hinging the seat member to the support frame, the reinforcing members being formed with outturned flanges which engage the seat brackets when the seat member is tipped down.
Claim 3
Dependent Claim
31 words
A chair according to claim 1, together with an arm member welded to at least one of the uprights so as to extend forwardly to one side of the back member.
Claim 4
Dependent Claim
28 words
A chair according to claim 1, wherein the hinge pins are of C-section, and are oversize relative to bores in the seat brackets into which they are driven.
Claim 5
Dependent Claim
23 words
A chair according to claim 1, wherein the seat member is formed with out-turned flanges overlying the out-turned flanges on the reinforcing members.
Claim 6
Dependent Claim
32 words
A chair according to claim 1, wherein the socket means in the back member includes restraining means cooperating with the uprights retaining the socket means against torsional movement relative to the uprights.
Claim 7
Dependent Claim
35 words
A chair according to claim 5, wherein the back member is provided with a transverse reinforcing rib on its rear surface near its top edge, said rib extending across the center of said back member.
Claim 8
Dependent Claim
23 words
A chair according to claim 5 wherein upstanding stiffening ribs extend up the rear surface of said back member from said socket means.
Claim 9
Dependent Claim
18 words
A chair according to claim 1 wherein separate means releaseably secure said reinforcing members to said seat member.
Claim 10
Dependent Claim
24 words
A chair according to claim 1 wherein said outturned flanges oppose under surfaces of said seat brackets when the seat member is tipped down.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |