US4140071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing tufted carpet
Assignee: Reemay Inc
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Filing: 1977-08-09
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Granted: 1979-02-20
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Expires: 1997-08-09
Abstract
Abstract There is disclosed a process for preparing a tufted carpet consisting essentially of feeding simultaneously into a tufting machine a woven or bonded nonwoven sheet of continuous polypropylene filaments and a dyeable, bonded, nonwoven sheet of continuous synthetic organic filaments, said sheets being fed in surface contact with each other, and tufting a pile yarn through both sheets to develop a tufted face having tufts extending above the dyeable, bonded, nonwoven sheet, said pile yarn being selected so as to be dyeable in conjunction with the dyeable, bonded, nonwoven sheet.
Inventors
- 👤 John R. Gee
- 👤 Ray M. Harlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:48
CPC Classifications
D; D05; D05C; D05C17/00; D05C17/02; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
A process for preparing a tufted carpet consisting essentially of feeding simultaneously into a tufting machine a primary carpet backing of continuous polypropylene filaments, said primary backing being selected from the group consisting of woven material and bonded nonwoven material, and a dyeable, bonded nonwoven sheet of continuous synthetic organic filaments, said sheet having a basis weight of 13 to 30 g/m 2 , a trapezoid tear strength of at least 15 g//g/m 2 and a MD stretch of less than 5%, said primary backing and said dyeable, bonded sheet being fed in unconnected surface contact with each other, and tufting a pile yarn through said backing and said sheet to develop a tufted face having tufts emerging from and extending beyond the dyeable, bonded, nonwoven sheet, said pile yarn being selected so as to be dyeable in conjunction with said dyeable, bonded, nonwoven sheet.
Claim 2
Dependent Claim
145 words
A process for preparing a tufted carpet consisting essentially of feeding simultaneously into a tufting machine a primary carpet backing of continuous polypropylene filaments, said primary backing being selected from the group consisting of woven material and bonded nonwoven material, and a dyeable, bonded nonwoven sheet of continuous synthetic organic filaments, said sheet having a basis weight of 13 to 30 g/m 2 , a trapezoid tear strength of at least 15 g//g/m 2 and a MD stretch of less than 5%, said primary backing and said dyeable, bonded sheet being fed in unconnected surface contact with each other, and tufting a pile yarn through said backing and said sheet to develop a tufted face having tufts emerging from and extending beyond the dyeable, bonded, nonwoven sheet, said pile yarn being selected so as to be dyeable in conjunction with said dyeable, bonded, nonwoven sheet.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein the sheet of continuous polypropylene filaments is a bonded nonwoven sheet.
Claim 4
Dependent Claim
23 words
The process of claim 2 wherein the sheet of continuous polypropylene filaments has a basis weight of from about 70-140 g/m 2 .
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein the sheet of continuous polypropylene filaments is a woven sheet of continuous ribbon filaments.
Claim 6
Dependent Claim
23 words
The process of claim 4 wherein the sheet of continuous polypropylene filaments has a basis weight of from about 70-140 g/m 2 .
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) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |