Patent US3787259A successfully refreshed from Google Patents.
US3787259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl chloride resin backed floor covering
Assignee: Uniroyal Chemical Co Inc
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Filing: 1971-11-10
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Granted: 1974-01-22
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Expires: 1991-11-10
Abstract
Abstract Floor covering is backed by applying to the back of the floor covering dry, solid fragments of prefluxed plasticized vinyl chloride resin compound, in the form of granules or dice, for example. Heat is applied to melt the prefluxed vinyl granules or the like in situ on the back of the floor covering to form a continuous backing sheet which is firmly adhered to the floor covering. The backing thus formed can serve to lock the tufts in place in a tufted carpet. The prefluxed granules or fragments can contain a chemical blowing agent which decomposes during the heating, producing a resilient vinyl foam backing. Since the vinyl granules can be of various colors, a tweed or multi-colored backing can be produced.
Inventors
- 👤 M Kleinfeld
- 👤 A Heinrichs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:30
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/04; D06N3/06; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B32B5/18; D06N7/00; D06N7/0063; D06N7/0071; D06N7/0073; D06N7/0084; E; E04; E04F; E04F15/00; E04F15/18; E04F15/182; E04F15/186; B32B2471/00; B32B2471/02; D06N2203/00; D06N2203/04; D06N2203/042; D06N2203/045; D06N2203/047; D06N2203/048; D06N2205/00; D06N2205/02; D06N2205/026; D06N2205/04; D06N2205/10; D06N2209/00; D06N2209/08; D06N2209/0807; D06N2209/083; D06N2211/00; D06N2211/06; D06N2211/066; D06N2213/00; D06N2213/06; D06N2213/066; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
22 words
A method as in claim 1 in which the said granules are of more than one color to provide a multicolored effect.
Claim 2
Independent Claim
164 words
A method of making a pile carpet comprising in combination the steps of: a. providing a layer of pile carpet fabric; b. applying a latex to the back side of said pile carpet fabric, the latex flowing around and embedding the bases of the piles; c. drying the said latex to provide a polymeric deposit which locks the bases of the piles in place; d. applying over the said dried polymeric deposit a layer of prefluxed vinyl chloride resin granules containing a blowing agent, the said vinyl chloride resin being selected from the group consisting of polyvinyl chloride and copolymers containing more than 50 percent by weight of vinyl chloride copolymerized with a copolymerizable monoethylenically unsaturated monomer; and e. thereafter heating the resulting assembly to melt the said granules and decompose the blowing agent whereby a layer of blown vinyl foam is formed on the back of the fabric, the latex deposit serving to adhere the foam layer to the back of the fabric.
Claim 3
Dependent Claim
22 words
A method as in claim 3 in which the said granules are of more than one color to provide a multicolored effect.
Claim 4
Independent Claim
152 words
A method of making a hard surfaced floor covering having a resilient backing comprising in combination the steps of: a. providing a hard surfaced floor covering having, in sequence, a transparent vinyl organosol wear layer, an underlying printed design, a vinyl foam layer, and a felt backing; b. spreading, on the back of said felt backing, a layer of prefluxed vinyl chloride resin granules containing a blowing agent, the said vinyl chloride resin being selected from the group consisting of polyvinyl chloride and copolymers containing more than 50% by weight of vinyl chloride copolymerized with a copolymerizable monoethylenically unsaturated monomer; and c. thereafter heating the resulting assembly to melt the said granules and decompose the blowing agent whereby a layer of blown vinyl foam is formed on the back of the felt providing an uneven back surface which permits easy removal of the flooring after it has been installed with an adhesive.
Claim 5
Dependent Claim
22 words
A method as in claim 5 in which the said granules are of more than one color to provide a multicolored effect.
References Cited (Backward Citations)
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |