Patent US3637256A successfully refreshed from Google Patents.
US3637256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair construction
Assignee: Shaw Walker Co
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Filing: 1969-06-16
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Granted: 1972-01-25
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Expires: 1989-06-16
Abstract
Abstract A molded one-piece chair having a back, a seat and sides with the back extending upwardly and rearwardly from the seat and the sides depending from the back and the seat and being inclined outwardly from the seat. An outwardly and rearwardly extending concave convolution is formed in each side of the chair for strength and to assist in stacking one chair on top of another. A trough is located between the seat and the back of the chair and blends into the convolutions for strengthening the chair. Connecting means are provided for joining similar chairs side by side in a row.
Inventors
- 👤 M Fillmore Harty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:53
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/04; A47C1/00; A47C1/12; A47C1/124; Y; Y10; Y10S; Y10S297/00; Y10S297/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
123 words
A molded, one-piece chair, having a back, a seat and sides with said back extending upwardly and rearwardly from said seat and said sides depending from said back and from the side edges of said seat and being inclined outwardly from said seat, a generally vertically extending convolution formed in each side of said chair with each convolution extending downwardly and rearwardly from said seat, each convolution being located adjacent the rear of its side and having a generally concave surface facing outwardly and a generally convex surface facing inwardly of said chair, and a trough formed between said seat and said back with said trough connecting with and blending into said vertically extending convolutions to form a strengthening member for the chair.
Claim 2
Dependent Claim
123 words
A molded, one-piece chair, having a back, a seat and sides with said back extending upwardly and rearwardly from said seat and said sides depending from said back and from the side edges of said seat and being inclined outwardly from said seat, a generally vertically extending convolution formed in each side of said chair with each convolution extending downwardly and rearwardly from said seat, each convolution being located adjacent the rear of its side and having a generally concave surface facing outwardly and a generally convex surface facing inwardly of said chair, and a trough formed between said seat and said back with said trough connecting with and blending into said vertically extending convolutions to form a strengthening member for the chair.
Claim 3
Dependent Claim
16 words
The chair of claim 1 further characterized in that each convolution tapers downwardly from said seat.
Claim 4
Dependent Claim
25 words
The chair of claim 1 further characterized in that an outwardly extending flange is formed along the lower portion of each side of said chair.
Claim 5
Dependent Claim
31 words
The chair of claim 1 further characterized in that said seat has a front portion which extends forward of said sides and which is rolled downwardly to form a support flange.
Claim 6
Dependent Claim
24 words
The chair of claim 1 further characterized in that said seat has a concave upper surface and said back has a concave front surface.
Claim 7
Dependent Claim
22 words
The chair of claim 1 further characterized in that each of said sides is formed inwardly at the front of said chair.
Claim 8
Dependent Claim
27 words
The chair of claim 1 further characterized in that means are provided on the chair to removably connect said chair to similar chairs in a side-by-side relationship.
Claim 9
Dependent Claim
39 words
The chair of claim 1 further characterized in that said removable connection means lock said chairs against lateral movement relative to one another while permitting vertical movement of said chairs into and out of locking engagement with one another.
Claim 10
Dependent Claim
41 words
The chair of claim 8 further characterized in that said removable connection means include an upright opening receptacle located on one of the sides of the chair and adapted to receive the opposite side of a similar chair in interconnecting relationship.
Claim 11
Dependent Claim
39 words
The chair of claim 9 further characterized in that means are provided on the opposite side of said chair to receive said upwardly opening receptacle to prevent forward and rearward movement of one chair relative to a connected chair.
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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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |