US4872220A
Expired / Lapsed
US
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Protective composite materials, their production and articles of protective clothing made therefrom
Assignee: STATE OF ISRAEL ATOMIC ENERGY COMMISSION SOREQ NUCLEAR RESEARCH CENTER NAHAL SOREQ YAVNE 70 600 ISRAEL
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Filing: 1987-08-26
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Granted: 1989-10-10
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Expires: 2007-08-26
Abstract
Abstract Protective composite material suitable for the making of protective garments to afford protection against noxious and toxic chemicals in the form of vapors, aerosols and particulates. The material comprises a water permeable and essentially pore-free air impermeable polymer ply sandwiched between an air and water permeable cover ply and an adsorbent substance-bearing and air and water permeable inner ply. Various embodiments of such protective material and modes of making it are disclosed.
Inventors
- 👤 Yair Haruvy
- 👤 Moshe Katz
- 👤 Abraham A. Horowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/73; D06M11/74; A; A62; A62B; A62B17/00; A62D; A62D5/00; D06M17/00; D06M17/04; D06M17/06; D06N; D06N3/00; D06N3/04; D06N7/00; Y; Y10; Y10S; Y10S2/00; Y10S2/903; Y10T; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/365; Y10T442/3707; Y10T442/378; Y10T442/60; Y10T442/659; Y10T442/671; Y10T442/674
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
39 words
A protective composite material, comprising at least one continuous, water permeable and essentially non-porous and non-foamed synthetic polymeric material sandwiched between an air and water permeable cover ply and an adsorbent substance-bearing and air and water permeable inner ply.
Claim 2
Dependent Claim
39 words
A protective composite material, comprising at least one continuous, water permeable and essentially non-porous and non-foamed synthetic polymeric material sandwiched between an air and water permeable cover ply and an adsorbent substance-bearing and air and water permeable inner ply.
Claim 3
Dependent Claim
30 words
A composite material according to claim 1, wherein either of the cover and inner plies is made of a member of the group of woven and non-woven fabric textile fabrics.
Claim 4
Dependent Claim
37 words
A composite material according to claim 2, wherein either of the cover and inner plies is made of a combination of a textile fabric and a member of the group of woven and non-woven inorganic fibrous fabrics.
Claim 5
Dependent Claim
27 words
A composite material according to claim 1 wherein the intermediary ply is in form of a coat or lining of the outer face of the inner ply.
Claim 6
Dependent Claim
26 words
A composite material according to claim 1, wherein the intermediary ply is in form of a coat or lining of the inner face of cover ply.
Claim 7
Dependent Claim
29 words
A composite material according to claim 1, wherein the intermediary ply also comprises an adsorbent substance capable of interaction with noxious materials by either of adsorption and chemical reaction.
Claim 8
Dependent Claim
15 words
A composite material according to claim 1, wherein the intermediary ply comprises a reinforcing fabric.
Claim 9
Dependent Claim
33 words
A protective composite material according to claim 1 wherein each of said plies is prepared separately, and then the so prepared plies are laid one on top of the other and joined together.
Claim 10
Dependent Claim
45 words
An article of protective clothing made of a composite material comprising at least one continuous, water permeable and essentially non-porous and non-foamed synthetic polymeric material sandwiched between an air and water permeable cover play and an adsorbent substance-bearing and air and water permeable inner ply.
Claim 11
Dependent Claim
45 words
An article of protective clothing made of a composite material comprising at least one continuous, water permeable and essentially non-porous and non-foamed synthetic polymeric material sandwiched between an air and water permeable cover play and an adsorbent substance-bearing and air and water permeable inner ply.
Claim 12
Dependent Claim
35 words
An article of clothing according to claim 9, wherein in said composite material either of the cover and inner plies is made of a member of the group of woven and non-woven fabric textile fabrics.
Claim 13
Dependent Claim
42 words
An article of clothing according to claim 10, wherein in said composite material either of the cover and inner plies is made of a combination of a textile fabric and a member of the group of woven and non-woven inorganic fibrous fabrics.
Claim 14
Dependent Claim
32 words
An article of clothing according to claim 9, wherein in said composite material the intermediary ply is in form of a coat or lining of the outer face of the inner ply.
Claim 15
Dependent Claim
31 words
An article of clothing according to claim 9, wherein in said composite material the intermediary ply is in form of a coat or lining of the inner face of cover ply.
Claim 16
Dependent Claim
34 words
An article of clothing according to claim 9, wherein in said conposite material the intermediary ply also comprises an adsorbent substance capable of interaction with noxious materials by either of adsorption and chemical reaction.
Claim 17
Dependent Claim
20 words
An article of clothing according to claim 9, wherein in said composite material the intermediary ply comprises a reinforcing fabric.
Claim 18
Dependent Claim
67 words
An article of protective clothing according to claim 9 wherein the continuous, water permeable and essentially non-porous and non-foamed synthetic polymeric material is prepared in situ by spreading the constituent polymeric material in plasticized form on at least one of either the water permeable cover ply or the water permeable inner ply to form a two-ply intermediate composite, and the remaining ply is then added and joined.
Claim 19
Dependent Claim
67 words
A flexible protective composite material, comprising an air and water permeable outer fabric ply, a substantially continuous and essentially non-porous and non-foamed synthetic polymeric film having a water permeation rate of less than 300 g/m 2 /h as an intermediary ply, and an air and water permeable fabric inner ply bearing an adsorbent substance capable of interaction with noxious materials by either of adsorption and chemical reaction.
Claim 20
Dependent Claim
67 words
A flexible protective composite material, comprising an air and water permeable outer fabric ply, a substantially continuous and essentially non-porous and non-foamed synthetic polymeric film having a water permeation rate of less than 300 g/m 2 /h as an intermediary ply, and an air and water permeable fabric inner ply bearing an adsorbent substance capable of interaction with noxious materials by either of adsorption and chemical reaction.
Claim 21
Dependent Claim
29 words
A flexible protective composite material according to claim 17 wherein said intermediary ply is selected from the group consisting of films of cross-linked PVA, nylon grafted acrylamide, and cellophane.
Claim 22
Dependent Claim
17 words
A flexible protective composite material according to claim 17 wherein said outer fabric ply is water repellent.
Claim 23
Dependent Claim
16 words
A flexible protective composite material according to claim 17 wherein said adsorbent substance comprises carbon particles.
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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) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |