Patent US4792480A successfully refreshed from Google Patents.
US4792480A
Expired / Lapsed
US
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Laminate material for use in protective clothing
Assignee: MSA Safety Inc
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Filing: 1987-09-14
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Granted: 1988-12-20
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Expires: 2007-09-14
Abstract
Abstract A material suitable for fabrication into protective garments that is a laminate formed from a layer of a reflective metallic material to provide flash protection and a layer that inhibits penetration by toxic and corrosive chemicals to protect against chemical exposure; both adhered to a cloth substrate to provide support.
Inventors
- 👤 Paul X. Freund
- 👤 Sheridan J. Rodgers
- 👤 Christopher J. Kairys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:25
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; A; A62; A62D; A62D5/00; B32B15/00; B32B15/04; B32B15/08; B32B25/00; B32B25/18; B32B27/06; B32B27/08; B32B27/30; B32B27/304; B32B27/306; B32B27/32; B32B27/322; B32B7/00; B32B7/04; B32B7/12; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2307/00; B32B2307/30; B32B2307/304; B32B2307/306; B32B2307/3065; B32B2307/31; B32B2307/40; B32B2307/412; B32B2307/416; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2319/00; B32B2323/00; B32B2323/04; B32B2323/10; B32B2327/00; B32B2327/12; B32B2327/18; B32B2331/00; B32B2331/04; B32B2571/00; B32B2571/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3167; Y10T428/31674; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928; Y10T442/00; Y10T442/60; Y10T442/654; Y10T442/656; Y10T442/657; Y10T442/659; Y10T442/66; Y10T442/674; Y10T442/676; Y10T442/681; Y10T442/696
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
A laminate material suitable for use as protective clothing comprising: a. a first layer of flame retardant heat sealable thermoplastic film; b. a second layer bonded to said first layer comprising a pliable cloth substrate; c. a third layer that is impermeable to toxic agents and bonded through a flame retardant thermoplastic film layer to said second layer; d. a fourth layer comprising a material reflective to radiant heat and bonded through a flame retardant thermoplastic film layer to said third layer; and e. a fifth layer of flame retardant, substantially radiant heat transparent and light transparent, heat sealable, thermoplastic film bonded to said fourth layer.
Claim 2
Dependent Claim
106 words
A laminate material suitable for use as protective clothing comprising: a. a first layer of flame retardant heat sealable thermoplastic film; b. a second layer bonded to said first layer comprising a pliable cloth substrate; c. a third layer that is impermeable to toxic agents and bonded through a flame retardant thermoplastic film layer to said second layer; d. a fourth layer comprising a material reflective to radiant heat and bonded through a flame retardant thermoplastic film layer to said third layer; and e. a fifth layer of flame retardant, substantially radiant heat transparent and light transparent, heat sealable, thermoplastic film bonded to said fourth layer.
Claim 3
Dependent Claim
30 words
A laminate material according to claim 1 where said second layer may be a spun bonded olefin; a spun bonded one hundred percent nylon 6.6 or, a long chain polyamide.
Claim 4
Dependent Claim
43 words
A laminate material according to claim 1 where said third layer may be a polyvinylidene chloride; a laminate comprising polyethylene and polyvinylidene chloride and ethylene vinyl acetate; a skived tetrafluoroethylene; an ethylene vinyl acetate; a vinylidene flouride hexafluoropropylene copolymer; or, a butyl rubber.
Claim 5
Dependent Claim
23 words
A laminate material according to claim 1 where said fourth layer is a metal foil; a metal film; or, a metalized thermoplastic film.
Claim 6
Dependent Claim
19 words
A laminate material according to claim 1 where said fourth layer is a metal vapor deposited onto a cloth.
Claim 7
Dependent Claim
114 words
Clothing garments for use as protection against chemical exposure and heat flashes made from a laminate material comprising: a. a first layer of flame retardant heat sealable thermoplastic film; b. a second layer bonded to said first layer comprising a pliable cloth substrate; c. a third layer that is impermeable to toxic agents and bonded through a flame retardant thermoplastic film layer to said second layer; d. a fourth layer comprising a material reflective to radiant heat and bonded through a flame retardant thermoplastic film layer to said third layer; and e. a fifth layer of flame retardant, substantially radiant heat transparent and light transparent, heat sealable, thermoplastic film bonded to said fourth layer.
Claim 8
Dependent Claim
114 words
Clothing garments for use as protection against chemical exposure and heat flashes made from a laminate material comprising: a. a first layer of flame retardant heat sealable thermoplastic film; b. a second layer bonded to said first layer comprising a pliable cloth substrate; c. a third layer that is impermeable to toxic agents and bonded through a flame retardant thermoplastic film layer to said second layer; d. a fourth layer comprising a material reflective to radiant heat and bonded through a flame retardant thermoplastic film layer to said third layer; and e. a fifth layer of flame retardant, substantially radiant heat transparent and light transparent, heat sealable, thermoplastic film bonded to said fourth layer.
Claim 9
Dependent Claim
29 words
Clothing garments according to claim 6 where said second layer may be a spun bonded olefin; a spun bonded one hundred percent nylon 6.6 or, a long chain polyamide.
Claim 10
Dependent Claim
42 words
Clothing garments according to claim 6 where said third layer may be a polyvinylidene chloride; a laminate comprising polyethylene and polyvinylidene chloride and ethylene vinyl acetate; a skived tetrafluoroethylene; an ethylene vinyl acetate; a vinylidene flouride hexafluoropropylene copolymer; or, a butyl rubber.
Claim 11
Dependent Claim
22 words
Clothing garments according to claim 6 where said fourth layer is a metal foil; a metal film; or, a metalized thermoplastic film.
Claim 12
Dependent Claim
18 words
Clothing garments according to claim 6 where said fourth layer is a metal vapor deposited onto a cloth.
References Cited (Backward Citations)
US4214321A
Cited
US4588646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |