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US3576702A Expired / Lapsed US ⏱️ 0.0 years remaining

Tufted carpet and a method for producing said carpet

Assignee: SNIA Viscosa SpA
•
Filing: 1967-03-28
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Granted: 1971-04-27
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Expires: 1987-03-28
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Abstract

Abstract A TUFTED CARPET HAVING A DOUBLE SURFACED STRUCTURE AND A UNIQUE APPEARANCE, THE PILE OF WHICH IS COMPOSED OF MULTIFILAMENT CONSISTING OF A COMPOSITE FILAMENT COMPOSED OF TWO THERMOPLASTIC SYNTHETIC LINEAR POLYMERS AND HAVING A LATENT CRIMPABILITY AND ONE-COMPONENT FILAMENT COMPOSED OF A THERMOPLASTIC SYNTHETIC LINEAR POLYMER, SAID COMPOSITE FILAMENT BEING ADHERED TIGHTLY AND DISTRIBUTED UNIFORMLY ON THE SURFACE OF A BASE CLOTH FOR THE CARPET IN CRIMPED STATE AND SAID ONE COMPONENT FILAMENT FORMING LOOP ON THE SURFACE OF THE PILE. THE METHOD FOR PRODUCING SAID TUFTED CARPET COMPRISING TUFTING SUBSTANTIALLY NOT CRIMPED MULTIFILAMENT CONSISTING OF THE COMPOSITE FILAMENT AND THE ONE-COMPONENT FILAMENT ON THE BASE CLOTH FOR THE CARPET TO FORM CARPET PILE AND THEN SUBJECTING THE RESULTING CARPET TO A HEAT OR SWELLING TREATMENT TO DEVELOP FULLY CRIMPS OF THE COMPOSITE FILAMENTS, SAID COMPOSITE FILAMENT BEING PRODUCED BY MELTING TWO THERMOPLASTIC SYNTHETIC LINEAR POLYMERS HAVING DIFFERENT SHRINKABLILITIES SEPARATELY AND EXTRUDING SAID MELTED POLYMERS THROUGH A COMMON ORIFICE TO FORM UNITARY FILAMENT, IN WHICH SAID TWO POLYMERS ARE BONDED ECCENTRICALLY IN SIDEBY-SIDE OR SHEATH AND CORE RELATION ALONG THE TOTAL LENGTH OF SAID UNITARY AND TAKING UP ON A BOBBIN INTO A BUNDLE.

Inventors

  • 👤 Masao Matsui
  • 👤 Keizo Ueda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 13:13
CPC Classifications
D; D05; D05C; D05C17/00; D05C17/02; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23957; Y10T428/23964; Y10T428/23979

Claims Analysis

Total Claims: 0
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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) 1974-04-26 1974-10-26 1975-04-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-04-26 1978-10-26 1979-04-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-04-26 1982-10-26 1983-04-27 $7700.00 Window Closed / Lapsed

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