US4063069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heatable floor carpet
Assignee: MARVAD ELECTRO TEXTILE Ltd C/O MACHLIS & MACHLIS 15 ROTHSCHILD BLVD TEL AVIV ISRAEL AN ISRAEL Co
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Filing: 1976-03-03
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Granted: 1977-12-13
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Expires: 1996-03-03
Abstract
Abstract An electrically heatable floor covering comprising a carpet of woven fibers, wherein an electrical heating element is enclosed in the carpet body, which is made of a straight thin copper wire having a reinforcing coating of polytetrafluoroethylene which causes the wire to withstand impressions produced by footsteps and by heavy furniture without being broken.
Inventors
- 👤 Menachem Peeri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:24
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/002; H05B2203/004; H05B2203/014; H05B2203/015; H05B2203/017; H05B2203/026; H05B2203/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
An electrically heatable floor covering comprising a carpet of woven electrically non-conducting fibers, wherein the improvement comprises an electrical heating element woven in the carpet as a weft thread in a zig-zag pattern covering the area of the carpet, said heating element being made of a stranded wire having a resistivity per meter of about 0.36 ohm, and being composed of a plurality of copper filaments each of which has a diameter of about 0.1 mm and is covered with a reinforcing coating of polytetrafluoroethylene which causes the wire to withstand impressions produced by footsteps and by heavy furniture without being broken, the total wire length being about 15 m. per square m.
Claim 2
Dependent Claim
113 words
An electrically heatable floor covering comprising a carpet of woven electrically non-conducting fibers, wherein the improvement comprises an electrical heating element woven in the carpet as a weft thread in a zig-zag pattern covering the area of the carpet, said heating element being made of a stranded wire having a resistivity per meter of about 0.36 ohm, and being composed of a plurality of copper filaments each of which has a diameter of about 0.1 mm and is covered with a reinforcing coating of polytetrafluoroethylene which causes the wire to withstand impressions produced by footsteps and by heavy furniture without being broken, the total wire length being about 15 m. per square m.
References Cited (Backward Citations)
US1036632A
Cited
US2700212A
Cited
US2812409A
Cited
US2759092A
Cited
US2817737A
Cited
US2782289A
Cited
US2771537A
Cited
US2976393A
Cited
US3057952A
Cited
US3243574A
Cited
US3349359A
Cited
US3472289A
Cited
US3425020A
Cited
US3408453A
Cited
US3513297A
Cited
US3582613A
Cited
US3616177A
Cited
US3684755A
Cited
US3940592A
Cited
US3889101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |