US5221572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stretchable protective fabric and protective apparel made therefrom
Assignee: Department of National Defence
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Filing: 1991-09-03
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Granted: 1993-06-22
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Expires: 2011-09-03
Abstract
Abstract A protective fabric suitable for use in hazardous environments such as those in which nuclear, chemical and biological warfare agents or similar hazardous elements exist. In general, the protective fabric comprises a plurality of layers of air- and water-vapor-permeable, thin, stretchable fabric materials, each being treated to provide separate or combined protective functions. The protective fabric may be fashioned into articles of protective apparel suitable for applications where close-fitting and conforming garments are required and where heat-stress and bulk of material is of concern.
Inventors
- 👤 Pierre P. Meunier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:56
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; A; A62; A62D; A62D5/00; B32B5/02; B32B5/04; B32B2262/00; B32B2262/02; B32B2262/0207; B32B2262/0215; B32B2262/10; B32B2262/106; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2307/70; B32B2307/724; B32B2571/00; B32B2571/02; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3008; Y10T442/3024; Y10T442/3472; Y10T442/3602; Y10T442/3699; Y10T442/60; Y10T442/601; Y10T442/602; Y10T442/659
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
72 words
A protective fabric comprising a plurality of layers of air- and water-vapor-permeable, thin, stretchable fabric material, each of said layers being treated to provide at least one protective function, comprising 1) first layer of fabric material having a durable fluorocarbon, oil-resistant and water-repellant treatment applied thereto and 2) a second layer of the fabric material having formed thereon a broken crust of dried acrylic latex having finely ground activated charcoal dispersed therein.
Claim 2
Dependent Claim
72 words
A protective fabric comprising a plurality of layers of air- and water-vapor-permeable, thin, stretchable fabric material, each of said layers being treated to provide at least one protective function, comprising 1) first layer of fabric material having a durable fluorocarbon, oil-resistant and water-repellant treatment applied thereto and 2) a second layer of the fabric material having formed thereon a broken crust of dried acrylic latex having finely ground activated charcoal dispersed therein.
Claim 3
Dependent Claim
25 words
The protective fabric of claim 1, wherein at least one of said layers of fabric materials comprises spandex fibres in the form of continuous monofilaments.
Claim 4
Dependent Claim
13 words
The protective fabric of claim 1, wherein the number of layers is two.
Claim 5
Dependent Claim
16 words
The protective fabric of claim 1, wherein the first layer is further treated with a fire-retardant.
Claim 6
Dependent Claim
56 words
A protective fabric comprising first and second adjacent layers of thin, stretchable, air- and water-vapour-permeable fabric materials, the material of said first layer having a durable fluorocarbon, oil resistant and water repellant treatment applied thereto, and the material of said second layer comprising elastomeric fibres impregnated with finely ground charcoal dispersed in an acrylic latex material.
Claim 7
Dependent Claim
56 words
A protective fabric comprising first and second adjacent layers of thin, stretchable, air- and water-vapour-permeable fabric materials, the material of said first layer having a durable fluorocarbon, oil resistant and water repellant treatment applied thereto, and the material of said second layer comprising elastomeric fibres impregnated with finely ground charcoal dispersed in an acrylic latex material.
Claim 8
Dependent Claim
13 words
An article of protective apparel manufactured from the protective fabric of claim 1.
Claim 9
Independent Claim
109 words
A method of manufacturing a protective fabric comprising the steps of: processing a first layer of thin, stretchable, air- and water-vapour-permeable material through a bath of a durable fluorocarbon, oil resistant and water repellant material; curing the processed first layer with heat; dispersing finely ground charcoal in a bath of cross-linked acrylic latex; processing a second layer of thin, stretchable, air- and water-vapour-permeable material containing elastomeric fibres through the charcoal-latex bath; curing the processed second layer and thereby forming a crust of dried latex on said fibres; stretching said cured second layer to break the latex crust; and joining said first and second layers together to form said fabric.
Claim 10
Independent Claim
109 words
A method of manufacturing a protective fabric comprising the steps of: processing a first layer of thin, stretchable, air- and water-vapour-permeable material through a bath of a durable fluorocarbon, oil resistant and water repellant material; curing the processed first layer with heat; dispersing finely ground charcoal in a bath of cross-linked acrylic latex; processing a second layer of thin, stretchable, air- and water-vapour-permeable material containing elastomeric fibres through the charcoal-latex bath; curing the processed second layer and thereby forming a crust of dried latex on said fibres; stretching said cured second layer to break the latex crust; and joining said first and second layers together to form said fabric.
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) | 1996-06-21 | 1996-12-21 | 1997-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-21 | 2000-12-21 | 2001-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-21 | 2004-12-21 | 2005-06-22 | $7700.00 | Window Closed / Lapsed |