Patent US4941884A successfully refreshed from Google Patents.
US4941884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Comfortable fabrics of high durability
Assignee: EIDP Inc
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Filing: 1989-10-16
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Granted: 1990-07-17
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Expires: 2009-10-16
Abstract
Abstract Woven fabrics from blends of high and low modulus fibers provide comfort plus high durability to hard surface abrasion.
Inventors
- 👤 James R. Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:53
CPC Classifications
D; D03; D03D; D03D1/00; D03D1/0035; D03D1/0041; D03D15/00; D03D15/20; D03D15/208; D03D15/217; D03D15/283; D03D15/40; D03D15/41; D03D25/00; D10; D10B; D10B2201/00; D10B2201/01; D10B2201/02; D10B2331/00; D10B2331/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
117 words
A method for preparing a highly durable fabric resistant to hard surface abrasion and having good aesthetics comprising subjecting a woven fabric made from yarns of discrete organic staple fibers, said fabric having a fabric tightness greater than 1.0 and a fiber tightness of less than 1.0, said fabric containing from 30 to 92% by weight of low staple fibers having a modulus of less than 100 g/dtex with the warp yarn of said fabric containing at least 15% of organic staple fibers having a modulus greater than 200 g/dtex and at least 30% of low modulus staple fibers, to a shrinking treatment sufficient to raise the fiber tightness of the fabric to a level above 1.0.
Claim 2
Independent Claim
117 words
A method for preparing a highly durable fabric resistant to hard surface abrasion and having good aesthetics comprising subjecting a woven fabric made from yarns of discrete organic staple fibers, said fabric having a fabric tightness greater than 1.0 and a fiber tightness of less than 1.0, said fabric containing from 30 to 92% by weight of low staple fibers having a modulus of less than 100 g/dtex with the warp yarn of said fabric containing at least 15% of organic staple fibers having a modulus greater than 200 g/dtex and at least 30% of low modulus staple fibers, to a shrinking treatment sufficient to raise the fiber tightness of the fabric to a level above 1.0.
Claim 3
Dependent Claim
33 words
A method in accordance with claim 23 wherein the fabric comprises at least 30% by weight of shrinkable low modulus fibers and the shrinking treatment is applied to said shrinkable low modulus fibers.
Claim 4
Dependent Claim
20 words
A method in accordance with claim 1 wherein the low modulus fiber is cotton and the shrinking treatment is mercerization.
Claim 5
Dependent Claim
20 words
A method in accordance with claim 3 wherein the fabric is permitted to relax in the fill direction during mercerization.
Claim 6
Dependent Claim
18 words
A method in accordance with claim 3 wherein the fabric is mercerized once, dried, and then mercerized again.
Claim 7
Dependent Claim
27 words
A method in accordance with claim 1 wherein the low modulus fiber is cotton and the shrinking occurs when the fabric is dried folling the flame-retarding process.
Claim 8
Dependent Claim
23 words
A method in accordance with claim 6 wherein the flame-retarding process involves treatment with tetrakis(hydroxymethyl) phosphonium chloride urea condensate and curing with ammonia.
Claim 9
Dependent Claim
26 words
A method in accordance with claim 1 wherein the low modulus fiber is a synthetic organic fiber and shrinking is achieved by heating in an autoclave.
Claim 10
Dependent Claim
15 words
A method in accordance with claim 8 wherein the low modulus fiber is a polyamide.
Claim 11
Dependent Claim
23 words
A method in accordance with claim 1 wherein the warp yarn is comprised of an intimate blend of said discrete organic staple fibers.
Claim 12
Dependent Claim
31 words
A method in accordance with claim 1 wherein the warp yarn is a sheath/core yarn in which the core comprises said organic staple fibers having a modulus greater than 200 g/dtex.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |