US4045605A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpeting having stiff fibers
Assignee: Collie Carpets Ltd
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Filing: 1976-06-18
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Granted: 1977-08-30
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Expires: 1996-06-18
Abstract
Abstract In a carpeting material of the kind comprising a backing fabric and fibres standing up from the backing fabric as pile or tufts, the pile or tuft fibres comprise 75 to 98 per cent by weight of conventional carpet fibres and 2 to 25 per cent by weight of stiff fibres or filaments arranged to act as dirt scrapers. The conventional carpet fibres are nylon, acrylic, regenerated cellulose, wool, polyester, cotton or polypropylene fibres, or a mixture of two or more of these, of less than 30 decitex per filament. The stiff fibres or filaments may be heavy monofilaments, for example of nylon, polyester or unplasticized polypropylene of from 30 to 300 tex, or they may be of metallic material. Alternatively, the stiff fibres can be in the form of twisted yarn which has been resinated to stiffen it. Processes for making the carpeting material are also described and claimed.
Inventors
- 👤 Leon Frank Haddon Breens
- 👤 Dennis Lockhart Armitage
- 👤 Christopher Edward Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:50
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; A; A47; A47L; A47L23/00; A47L23/22; A47L23/26; A47L23/266; B32B25/00; B32B25/10; D; D03; D03D; D03D27/00; D05; D05C; D05C17/00; D05C17/02; D05C17/026; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0261; B32B2262/0276; B32B2262/10; B32B2262/103; B32B2471/00; B32B2471/02; D10; D10B; D10B2101/00; D10B2101/20; D10B2321/00; D10B2321/02; D10B2321/022; D10B2331/00; D10B2331/02; D10B2331/04; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23929; Y10T428/23936; Y10T428/23957; Y10T428/23993
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
A carpeting material comprising a backing fabric and fibres standing up from the backing fabric as pile or tufts, wherein the pile or tuft fibres comprise 75 to 98 percent by weight of conventional carpet yarns and 2 to 25 percent by weight of stiff fibres of filaments which are not plied with the conventional carpet fibre yarns and which are arranged to act as dirt scrapers, said carpet yarns being formed from fibres selected from the group consisting of nylon, acrylic, regenerated cellulose, wool, polyester, cotton and polypropylene fibres of less than 30 decitex per filament, and the stiff fibres or filaments being more resistant to being trodden down than the conventional carpet yarns.
Claim 2
Dependent Claim
115 words
A carpeting material comprising a backing fabric and fibres standing up from the backing fabric as pile or tufts, wherein the pile or tuft fibres comprise 75 to 98 percent by weight of conventional carpet yarns and 2 to 25 percent by weight of stiff fibres of filaments which are not plied with the conventional carpet fibre yarns and which are arranged to act as dirt scrapers, said carpet yarns being formed from fibres selected from the group consisting of nylon, acrylic, regenerated cellulose, wool, polyester, cotton and polypropylene fibres of less than 30 decitex per filament, and the stiff fibres or filaments being more resistant to being trodden down than the conventional carpet yarns.
Claim 3
Dependent Claim
22 words
A carpeting material according to claim 1, wherein the stiff fibres or filaments are heavy monofilaments of nylon, polyester or unplasticised polypropylene.
Claim 4
Dependent Claim
16 words
A carpeting material according to claim 2, wherein the monofilaments are of 30 to 300 tex.
Claim 5
Dependent Claim
18 words
A carpeting material according to claim 1, wherein the stiff fibres or filaments are metallic fibres or filaments.
Claim 6
Dependent Claim
28 words
A carpeting material according to claim 1, wherein the stiff fibres or filaments are in the form of a twisted yarn which has been resinated to stiffen it.
Claim 7
Dependent Claim
19 words
A mat comprising carpeting material according to claim 1 combined with a backing layer of rubber or synthetic resin.
Claim 8
Dependent Claim
163 words
In a process for preparing carpeting material in which conventional pile or tuft carpet yarns formed of fibres selected from the group consisting of nylon, acrylic, regenerated cellulose, wool, polyester, cotton and polypropylene fibres of less than 30 decitex per filament are fed to carpet forming machinery selected from the group consisting of tufting machines and carpet looms to form rows of pile or or tufts, the improvement comprising the step of feeding stiff fibres or at least one stiff filament to the carpet forming machinery together with a conventional pile or tuft carpet yarn so that the pile or tuft fibres of the carpeting material produced comprise 75 to 98 percent by weight of the fibres of said conventional carpet yarns and 2 to 25 percent by weight of the said stiff fibres or filaments, said stiff fibres or filaments being more resistant to being trodden down than said conventional carpet yarn so as to be capable of acting as dirt scrapers.
Claim 9
Dependent Claim
163 words
In a process for preparing carpeting material in which conventional pile or tuft carpet yarns formed of fibres selected from the group consisting of nylon, acrylic, regenerated cellulose, wool, polyester, cotton and polypropylene fibres of less than 30 decitex per filament are fed to carpet forming machinery selected from the group consisting of tufting machines and carpet looms to form rows of pile or or tufts, the improvement comprising the step of feeding stiff fibres or at least one stiff filament to the carpet forming machinery together with a conventional pile or tuft carpet yarn so that the pile or tuft fibres of the carpeting material produced comprise 75 to 98 percent by weight of the fibres of said conventional carpet yarns and 2 to 25 percent by weight of the said stiff fibres or filaments, said stiff fibres or filaments being more resistant to being trodden down than said conventional carpet yarn so as to be capable of acting as dirt scrapers.
Claim 10
Dependent Claim
28 words
A process according to claim 7, wherein the stiff fibres or filaments are fed to the carpet forming machinery with every row of conventional pile or tuft yarn.
Claim 11
Dependent Claim
43 words
A process according to claim 7, wherein each row of pile or tuft yarn associated with stiff fibres or filaments is followed by one of more rows of the conventional tuft or pile yarn which does not contain the stiff fibres or filaments.
References Cited (Backward Citations)
US2815558A
Cited
US3940522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |