Patent US4401704A successfully refreshed from Google Patents.
US4401704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-stick latex foam fluorocarbon carpet backing
Assignee: HARDING CARPETS Ltd A Co OF PROVINCE OF ONTARIO
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Filing: 1982-06-21
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Granted: 1983-08-30
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Expires: 2002-06-21
Abstract
Abstract A carpet has an upper carpet layer and a lower backing layer of latex high density foam rubber secured to an undersurface of the carpet layer. The backing layer has a bottom surface substantially covered by a fluorocarbon compound bonded to the backing layer and reducing the tendency of the backing to stick to a floor on which the carpet is laid.
Inventors
- 👤 Michael Zegota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:00
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0039; D06N7/0042; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S428/922; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/23986; Y10T428/23993
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
62 words
A carpet comprising an upper carpet layer and a lower backing layer of latex high density foam rubber secured to an undersurface of the carpet layer, said backing layer having a bottom surface substantially covered by a fluorocarbon compound bonded to the backing layer and reducing the tendency of the backing to stick to a floor on which the carpet is laid.
Claim 2
Dependent Claim
62 words
A carpet comprising an upper carpet layer and a lower backing layer of latex high density foam rubber secured to an undersurface of the carpet layer, said backing layer having a bottom surface substantially covered by a fluorocarbon compound bonded to the backing layer and reducing the tendency of the backing to stick to a floor on which the carpet is laid.
Claim 3
Dependent Claim
16 words
A carpet according to claim 1 wherein the backing layer is of carboxylated styrene-butadiene polymer foam.
Claim 4
Independent Claim
111 words
A method of reducing the tendency of a carpet to stick to a floor on which it is laid, said carpet having an upper carpet layer and a lower backing layer of latex high density foam rubber secured to an undersurface of the carpet layer, the method comprising applying a fluorocarbon compound to substantially the whole area of a bottom surface of the backing layer, and heating the backing layer and applied fluorocarbon compound to cause the fluorocarbon compound to become bonded to the backing layer such that, after cooling, the fluorocarbon compound reduces the tendency of the backing layer to stick to a floor on which the carpet is laid.
Claim 5
Independent Claim
111 words
A method of reducing the tendency of a carpet to stick to a floor on which it is laid, said carpet having an upper carpet layer and a lower backing layer of latex high density foam rubber secured to an undersurface of the carpet layer, the method comprising applying a fluorocarbon compound to substantially the whole area of a bottom surface of the backing layer, and heating the backing layer and applied fluorocarbon compound to cause the fluorocarbon compound to become bonded to the backing layer such that, after cooling, the fluorocarbon compound reduces the tendency of the backing layer to stick to a floor on which the carpet is laid.
Claim 6
Dependent Claim
79 words
A method according to claim 3 comprising applying the foam rubber as a frothed emulsion to the carpet layer to form an uncured backing layer, partially curing the backing layer by heating the carpet layer and applied emulsion, applying the fluorocarbon compound to the partially cured backing layer, and heating the carpet layer and partially cured backing layer with applied fluorocarbon compound to complete the curing of the backing layer and cause the fluorocarbon compound to become bonded thereto.
Claim 7
Dependent Claim
46 words
A method according to claim 3 comprising applying the fluorocarbon compound to a fully cured backing layer secured to a carpet layer and heating the carpet layer and backing layer with applied fluorocarbon compound to cause the fluorocarbon compound to become bonded to the backing layer.
Claim 8
Dependent Claim
16 words
A method according to claim 3 wherein the backing layer is of carboxylated styrene-butadiene polymer foam.
References Cited (Backward Citations)
US4171395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |