US3940522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic fibers and pile fabrics made therefrom
Assignee: EIDP Inc
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Filing: 1973-08-02
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Granted: 1976-02-24
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Expires: 1993-08-02
Abstract
Abstract A cut pile fabric is produced using a grass-like fiber and, optionally, a crimped or crimpable fiber of lower denier than said grass-like fiber plied therewith. The pile fabric made from such fibers has improved aesthetics (e.g., appearance) and mechanical (e.g., frictional) properties, and closely simulates natural turf.
Inventors
- 👤 John Humphrey Wessells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:15
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/445; D01; D01D; D01D5/00; D01D5/253; D05; D05C; D05C17/00; D05C17/02; D05C17/026; E; E01; E01C; E01C13/00; E01C13/08; D10; D10B; D10B2331/00; D10B2331/02; D10B2505/00; D10B2505/20; D10B2505/202; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23957; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2973
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
131 words
Fabric comprising a backing and a multiplicity of fibers extending from said backing in the form of a cut pile layer and being secured thereto by an adhesive, said multiplicity of fibers comprising: grass-like fibers comprising a rib and two webs which form a partially folded structure of bi-arcuate cross-section and having a denier per fiber of about 200 to 1500 and a major dimension of cross-section of at least about 0.02 inch, and crimped fibers having a denier per fiber of about 6 to 150, with the proviso that: 1. said grass-like fibers and said crimped fibers each comprise at least about 10 weight percent of said multiplicity of fibers, and 2. the denier-per-fiber ratio of the said grass-like fibers to the said crimped fibers is greater than about 3:1.
Claim 2
Dependent Claim
131 words
Fabric comprising a backing and a multiplicity of fibers extending from said backing in the form of a cut pile layer and being secured thereto by an adhesive, said multiplicity of fibers comprising: grass-like fibers comprising a rib and two webs which form a partially folded structure of bi-arcuate cross-section and having a denier per fiber of about 200 to 1500 and a major dimension of cross-section of at least about 0.02 inch, and crimped fibers having a denier per fiber of about 6 to 150, with the proviso that: 1. said grass-like fibers and said crimped fibers each comprise at least about 10 weight percent of said multiplicity of fibers, and 2. the denier-per-fiber ratio of the said grass-like fibers to the said crimped fibers is greater than about 3:1.
Claim 3
Dependent Claim
74 words
Fabric comprising a backing and a multiplicity of fibers extending from said backing in the form of a cut pile layer being secured thereto by an adhesive, said multiplicity of fibers comprising grass-like fibers of a polyamide of bi-arcuate cross-section having a denier-per-fiber of 200-1500 and having two webs joined together and a rib of up to twice the thickness of said webs forming a V-cross-section having an included angle not greater than 160°.
Claim 4
Dependent Claim
74 words
Fabric comprising a backing and a multiplicity of fibers extending from said backing in the form of a cut pile layer being secured thereto by an adhesive, said multiplicity of fibers comprising grass-like fibers of a polyamide of bi-arcuate cross-section having a denier-per-fiber of 200-1500 and having two webs joined together and a rib of up to twice the thickness of said webs forming a V-cross-section having an included angle not greater than 160°.
Claim 5
Dependent Claim
11 words
The fabric of claim 2 wherein said grass-like fiber is bulked.
Claim 6
Dependent Claim
72 words
Fabric comprising a backing and a multiplicity of fibers extending from said backing in the form of a cut pile layer and being secured thereto by an adhesive, said multiplicity of fibers comprising: grass-like fibers of bi-arcuate cross-section having a denier-per-fiber of 200 to 1500 and two webs joined together and a rib forming an included angle of not greater than 160° and crimped fibers having a denier-per-fiber of 6 to 330.
Claim 7
Dependent Claim
72 words
Fabric comprising a backing and a multiplicity of fibers extending from said backing in the form of a cut pile layer and being secured thereto by an adhesive, said multiplicity of fibers comprising: grass-like fibers of bi-arcuate cross-section having a denier-per-fiber of 200 to 1500 and two webs joined together and a rib forming an included angle of not greater than 160° and crimped fibers having a denier-per-fiber of 6 to 330.
Claim 8
Dependent Claim
27 words
A grass-like fiber of a synthetic polymeric material of bi-arcuate cross-section having a denier-per-fiber of 200 to 1500 and having two webs joined together and a rib.
Claim 9
Dependent Claim
27 words
A grass-like fiber of a synthetic polymeric material of bi-arcuate cross-section having a denier-per-fiber of 200 to 1500 and having two webs joined together and a rib.
Claim 10
Dependent Claim
14 words
The fiber of claim 5 having an included angle of not greater than 160°.
Claim 11
Dependent Claim
20 words
The fiber of claim 5 wherein the length in cross-section of each of said webs is greater than 0.01 inch.
Claim 12
Dependent Claim
19 words
The fiber of claim 7 wherein the thickness at said rib is up to twice that of said webs.
Claim 13
Dependent Claim
10 words
The fiber of claim 8 wherein said webs are non-planar.
Claim 14
Dependent Claim
13 words
The fiber of claim 9 whrein said synthetic polymeric material is a polyamide.
Claim 15
Dependent Claim
10 words
The fiber of claim 10 wherein said fiber is bulked.
Claim 16
Dependent Claim
64 words
A combined yarn comprising a first yarn comprising at least one grass-like fiber of a synthetic polymeric material having a denier-per-fiber of 200 to 1500 and having two webs joined together and a rib to form a V-cross-section having an included angle of not greater than 160°, plied together with a second yarn comprising fibers having a denier per fiber of 6 to 330.
Claim 17
Dependent Claim
64 words
A combined yarn comprising a first yarn comprising at least one grass-like fiber of a synthetic polymeric material having a denier-per-fiber of 200 to 1500 and having two webs joined together and a rib to form a V-cross-section having an included angle of not greater than 160°, plied together with a second yarn comprising fibers having a denier per fiber of 6 to 330.
Claim 18
Dependent Claim
16 words
The combined yarn of claim 12 wherein said second yarn comprises crimped or latently crimpable fibers.
Claim 19
Dependent Claim
16 words
The combined yarn of claim 13 wherein said first yarn comprises crimped or latently crimpable fibers.
Claim 20
Dependent Claim
10 words
The combined yarn of claim 12 which has been bulked.
References Cited (Backward Citations)
US3293723A
Cited
US3551263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |