US3990929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-induced tension floor
Assignee: Armstrong World Industries Inc
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Filing: 1975-10-23
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Granted: 1976-11-09
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Expires: 1995-10-23
Abstract
Abstract A method of surfacing an area with a surface covering having a decorative wear layer formed of a thermoplastic vinyl resin-containing composition that has been formed by fusing under heat and/or pressure and bonded to a strippable backing before stresses, set up therein during formation, are relieved. The backing is removed prior to installation and the wear layer secured at its perimeter only against movement with respect to the surface being covered and before stresses therein are relieved.
Inventors
- 👤 Richard J. Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:55
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/04; D06N3/06; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1041; Y10T156/11; Y10T156/1153
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
In a method of installing a resilient decorative surface covering having a wear layer of a fused thermoplastic vinyl resin-containing composition which tends to shrink due to stresses set up therein by the heat history of its manufacturing process, the steps comprising: 1. Bonding the wear layer to a thermally dimensionally stable, strippable backing before the wear layer relaxes, thus holding the wear layer under tension; 2. Packaging the backed product for shipment; 3. At the point of installation, separating said strippable backing from said wear layer; and 4. Securing said wear layer against movement with respect to the surface to be covered at the periphery only of said wear layer before stresses therein are relieved.
Claim 2
Dependent Claim
116 words
In a method of installing a resilient decorative surface covering having a wear layer of a fused thermoplastic vinyl resin-containing composition which tends to shrink due to stresses set up therein by the heat history of its manufacturing process, the steps comprising: 1. Bonding the wear layer to a thermally dimensionally stable, strippable backing before the wear layer relaxes, thus holding the wear layer under tension; 2. Packaging the backed product for shipment; 3. At the point of installation, separating said strippable backing from said wear layer; and 4. Securing said wear layer against movement with respect to the surface to be covered at the periphery only of said wear layer before stresses therein are relieved.
Claim 3
Dependent Claim
16 words
A method in accordance with claim 1 wherein the wear layer is an embossed foamed layer.
Claim 4
Dependent Claim
32 words
A method in accordance with claim 1 wherein the thermal coefficient of expansion of the vinyl composition wear layer is greater than about twice the thermal coefficient of expansion of the backing.
Claim 5
Dependent Claim
17 words
A method in accordance with claim 3 wherein the wear layer is installed over a foamed backing.
Claim 6
Independent Claim
111 words
A method of installing a resilient, decorative surface covering, which comprises: a. providing a resilient, decorative surface covering which comprises a layer of a fused, thermoplastic, vinyl resin which shrinks due to stresses set up therein, by the heat history of its manufacturing process, said layer being adhered to a strippable backing which is of greater dimensional stability under changing thermal conditions than said layer, before said layer shrinks whereby said layer is maintained under tension; b. separating said strippable backing from said layer; and c. securing said layer against movement with respect to the surface to be covered, at the periphery only, before the tension in said layer is relieved.
Claim 7
Independent Claim
111 words
A method of installing a resilient, decorative surface covering, which comprises: a. providing a resilient, decorative surface covering which comprises a layer of a fused, thermoplastic, vinyl resin which shrinks due to stresses set up therein, by the heat history of its manufacturing process, said layer being adhered to a strippable backing which is of greater dimensional stability under changing thermal conditions than said layer, before said layer shrinks whereby said layer is maintained under tension; b. separating said strippable backing from said layer; and c. securing said layer against movement with respect to the surface to be covered, at the periphery only, before the tension in said layer is relieved.
Claim 8
Dependent Claim
13 words
The method of claim 5 wherein said layer is an embossed foam layer.
Claim 9
Dependent Claim
24 words
The method of claim 5 wherein said decorative surface covering provided in (a) is in a roll with the fused vinyl layer face out.
Claim 10
Dependent Claim
18 words
The method of claim 5 wherein said surface to be covered is first covered with a foam backing.
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) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |