US4036526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furniture spring support
Assignee: Individual
•
Filing: 1976-08-16
•
Granted: 1977-07-19
•
Expires: 1996-08-16
Abstract
Abstract A spring support for a piece of furniture. The support includes a plastic sheet comprising a plurality of spaced apart ribs integrally joined together. The sheet includes a downwardly bowed portion joined by a first intermediate section to a front leg and joined by a second intermediate section to a rear leg. The legs are attachable to a furniture frame. The sheet varies in thickness with the minimum thickness occurring at the first and second intermediate sections located respectively adjacent the front and rear legs. The varying thickness and cross sectional area of the sheet provides for minimum deflection at the center portion of the sheet when downward force is applied thereto while maximum deflection occurs at the first and second intermediate section.
Inventors
- 👤 William G. Baechle
- 👤 Edward L. Roehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:03
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
207 words
A spring support for a piece of furniture comprising: a plastic sheet to be incorporated into a piece of furniture, said sheet extending laterally across to form a seat and including a generally center portion to supportingly receive a person with said center portion having a generally curved convex configuration as viewed from above, said sheet further including a front end portion and a first intermediate portion between said front end portion and said center portion and further including a back end portion and a second intermediate portion between said back end portion and said center portion, said sheet including a straight longitudinal axis extending from said front edge portion to said back edge portion, said first intermediate portion and said second intermediate portion being integral with said center portion and being located along said longitudinal axis outwardly of said center portion, said first intermediate portion and said second intermediate portion each having a cross sectional area less than said center portion and less than said front end portion and less than said back end portion providing a greater downward deflection of said first intermediate portion and of said second intermediate portion than of said center portion when a person is sitting atop of said center portion.
Claim 2
Dependent Claim
207 words
A spring support for a piece of furniture comprising: a plastic sheet to be incorporated into a piece of furniture, said sheet extending laterally across to form a seat and including a generally center portion to supportingly receive a person with said center portion having a generally curved convex configuration as viewed from above, said sheet further including a front end portion and a first intermediate portion between said front end portion and said center portion and further including a back end portion and a second intermediate portion between said back end portion and said center portion, said sheet including a straight longitudinal axis extending from said front edge portion to said back edge portion, said first intermediate portion and said second intermediate portion being integral with said center portion and being located along said longitudinal axis outwardly of said center portion, said first intermediate portion and said second intermediate portion each having a cross sectional area less than said center portion and less than said front end portion and less than said back end portion providing a greater downward deflection of said first intermediate portion and of said second intermediate portion than of said center portion when a person is sitting atop of said center portion.
Claim 3
Dependent Claim
58 words
The spring support of claim 1 wherein: said first intermediate portion has an upwardly looking V-shaped configuration and is lower in elevation than said front end portion and said center portion and said second intermediate portion providing a hinge connection between said front end portion and said center portion; said second intermediate portion having an inverted V-shaped configuration.
Claim 4
Dependent Claim
87 words
The spring support of claim 2 wherein: said sheet has a total area cross sectional thickness decreasing from said front end portion to a minimum thickness at said first intermediate portion and from said rear end portion to a minimum thickness at said second intermediate portion, said sheet has a total area cross sectional thickness increasing from said first intermediate portion to said center portion and from said second intermediate portion to said center portion providing a relative constant deflection of said center portion when under load.
Claim 5
Dependent Claim
50 words
The spring support of claim 3 and further comprising: a front leg integrally joined to said front end portion and extending downwardly therefrom being attachable to a furniture frame; and, a rear leg integrally joined to said back end portion and extending downwardly therefrom being attachable to a furniture leg.
Claim 6
Dependent Claim
53 words
The spring support of claim 4 wherein: said sheet comprises a plurality of spaced apart ribs integrally joined together, said front leg is a wall which comprises a plurality of spaced apart ribs integrally joined together, said rear leg is a wall which comprises a plurality of spaced apart ribs integrally joined together.
Claim 7
Dependent Claim
15 words
The spring support of claim 5 wherein: said sheet is symmetrical about said longitudinal axis.
Claim 8
Dependent Claim
209 words
A piece of furniture comprising: a frame with legs depending therefrom; a plastic sheet mounted to said frame, said sheet extending laterally across to form a seat and including a generally center portion to supportingly receive a person with said center portion having a generally curved configuration opening downwardly, said sheet further including a front edge portion and a first intermediate portion between said front edge portion and said center portion and further including a back edge portion and a second intermediate portion between said back edge portion and said center portion, said sheet including a straight longitudinal axis extending from said front edge portion to said back edge portion, said first intermediate portion and said second intermediate portion being integral with said center portion and being located along said longitudinal axis outwardly of said center portion, said first intermediate portion and said second intermediate portion each having a cross sectional area less than said center portion and less than said front edge portion and less than said back edge portion providing a greater downward deflection of said first intermediate portion and of said second intermediate portion than of said center portion when a person is sitting atop of said center portion; and, upholstery covering said sheet and frame.
Claim 9
Dependent Claim
209 words
A piece of furniture comprising: a frame with legs depending therefrom; a plastic sheet mounted to said frame, said sheet extending laterally across to form a seat and including a generally center portion to supportingly receive a person with said center portion having a generally curved configuration opening downwardly, said sheet further including a front edge portion and a first intermediate portion between said front edge portion and said center portion and further including a back edge portion and a second intermediate portion between said back edge portion and said center portion, said sheet including a straight longitudinal axis extending from said front edge portion to said back edge portion, said first intermediate portion and said second intermediate portion being integral with said center portion and being located along said longitudinal axis outwardly of said center portion, said first intermediate portion and said second intermediate portion each having a cross sectional area less than said center portion and less than said front edge portion and less than said back edge portion providing a greater downward deflection of said first intermediate portion and of said second intermediate portion than of said center portion when a person is sitting atop of said center portion; and, upholstery covering said sheet and frame.
Claim 10
Dependent Claim
48 words
The piece of furniture of claim 7 wherein: said first intermediate portion has a V-shaped configuration and is lower in elevation than said front edge portion and said center portion and said second intermediate portion providing a hinge connection between said front edge portion and said center portion.
Claim 11
Dependent Claim
74 words
The piece of furniture of claim 8 wherein: said sheet has a cross sectional thickness decreasing from said front edge portion to said first intermediate portion and from said rear edge portion to said second intermediate portion, said sheet has a cross sectional thickness increasing from said first intermediate portion to said center portion and from said second intermediate portion to said center portion providing a constant deflection of said center portion when loaded.
Claim 12
Dependent Claim
49 words
The piece of furniture of claim 9 and further comprising: a front leg integrally joined to said front edge portion and extending downwardly therefrom being attached to said frame; and, a rear leg integrally joined to said back edge portion and extending downwardly therefrom being attached to said frame.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |