US4996099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant fabric
Assignee: SPRINGS CREATIVE PRODUCTS GROUP Inc
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Filing: 1989-10-27
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Granted: 1991-02-26
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Expires: 2009-10-27
Abstract
Abstract A fire-resistant fabric suitable for use as a flame barrier comprising a flame durable textile fabric substrate formed of corespun yarns, the yarns comprising a core of flame resistant fiber and a sheath of modacrylic intumescent staple fibers. In normal use, the fabric is flexible and conformable and has good air porosity. When exposed to high temperature or a flame, however, the modacrylic intumescent sheath fiber reacts and swells to form a char which closes the pores or interstices of the fabric to thus prevent flame or hot gases from penetrating therethrough.
Inventors
- 👤 William M. Cooke
- 👤 James E. Hendrix
- 👤 Thomas W. Tolbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/38; B; B32; B32B; B32B27/00; B32B27/12; B32B5/00; B32B5/18; D02G3/44; D02G3/443; D03; D03D; D03D15/00; D03D15/50; D03D15/513; D10; D10B; D10B2321/00; D10B2321/10; D10B2321/101; D10B2331/00; D10B2331/02; D10B2331/021; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/31504; Y10T428/31551; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/105; Y10T442/30; Y10T442/3065; Y10T442/3073; Y10T442/40; Y10T442/444; Y10T442/60; Y10T442/637; Y10T442/641
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
61 words
A fire-resistant laminate comprising an underlying flammable layer and a flame barrier fabric overlying said underlying flammable layer, said flame barrier fabric comprising a flame durable textile fabric substrate formed of corespun yarns, said yarns comprising a core of a flame resistant fiber and a sheath of modacrylic intumescent staple fibers which swell and form a char on exposure to flame.
Claim 2
Dependent Claim
61 words
A fire-resistant laminate comprising an underlying flammable layer and a flame barrier fabric overlying said underlying flammable layer, said flame barrier fabric comprising a flame durable textile fabric substrate formed of corespun yarns, said yarns comprising a core of a flame resistant fiber and a sheath of modacrylic intumescent staple fibers which swell and form a char on exposure to flame.
Claim 3
Dependent Claim
25 words
A fire-resistant laminate according to claim 1 wherein the textile fabric substrate is of woven, nonwoven, knitted, braided, warp lay and scrim reinforced web construction.
Claim 4
Dependent Claim
52 words
A fire-resistant fabric according to claim 1 wherein the flame resistant fiber of the core is selected from the group consisting of glass, polybenzimidazole, polyimides, various metals, quartz, ceramics, polyetherketones, polyetheretherketones, polyetherketoneketones, polyetheretherketoneketones, polyetherimides, polysulfones, polyarylates, polyaryletherketones, polyamide-imides, polyarylsulfones, polyethersulfones, polyketones, polyphenylene sulfides, polyaramids and carbon and carbonizable compounds and blends thereof.
Claim 5
Dependent Claim
19 words
A fire-resistant fabric according to claim 3 wherein the flame resistant fiber of the core is a corespun fiber.
Claim 6
Dependent Claim
29 words
A fire-resistant fabric according to claim 1 wherein the modacrylic intumescent staple fibers are blended with a fiber selected from the group consisting of wool, silk and cellulosic fibers.
Claim 7
Dependent Claim
16 words
A fire-resistant laminate according to claim 1 wherein the underlying flammable layer comprises a polyurethane foam.
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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) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |