Patent US4454191A successfully refreshed from Google Patents.
US4454191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof and moisture-conducting fabric coated with hydrophilic polymer
Assignee: Individual
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Filing: 1982-08-17
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Granted: 1984-06-12
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Expires: 2002-08-17
Abstract
Abstract A waterproof and moisture-conducting fabric comprising a base permeable to water vapor and sealed with a closed coating of a hydrophilic polymer. The sealing coating is advantageously a compressed foam of an acrylic resin modified with polyvinyl chloride or polyurethane. A second base may be laminated onto the sealing layer. Protective fillers such as lead compounds and carbon may be included in or on the coating. The fabric is suited for protective clothing articles such as rescue-at-sea garments and shoe uppers, and sleeping bags.
Inventors
- 👤 Hubert von Blucher
- 👤 Hasso von Blucher
- 👤 Ernest de Ruiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:19
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/04; D06N3/06; D06N3/065; D06N3/08; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249975; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/335; Y10T442/3366; Y10T442/3374
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
109 words
A waterproof and moisture-conducting fabric comprising a textile base permeable to water vapor and sealed with a closed airtight and liquid-tight coating layer of a hydrophilic polymer having enough hydrophilic hydroxyl, ether, amine and/or carboxyl groups for absorbing water at points of high partial pressure, effecting migration of said water within the layer in the form of water molecules to points of low partial pressure, and releasing it in the form of water vapor again at the surface of the fabric, the coating being capable of storing 200 to 400% of its weight in moisture and allowing passage of at least 500 g/m 2 of water vapor per day.
Claim 2
Dependent Claim
109 words
A waterproof and moisture-conducting fabric comprising a textile base permeable to water vapor and sealed with a closed airtight and liquid-tight coating layer of a hydrophilic polymer having enough hydrophilic hydroxyl, ether, amine and/or carboxyl groups for absorbing water at points of high partial pressure, effecting migration of said water within the layer in the form of water molecules to points of low partial pressure, and releasing it in the form of water vapor again at the surface of the fabric, the coating being capable of storing 200 to 400% of its weight in moisture and allowing passage of at least 500 g/m 2 of water vapor per day.
Claim 3
Dependent Claim
15 words
A fabric according to claim 1, wherein the sealing coating is a coating of foam.
Claim 4
Dependent Claim
12 words
A fabric according to claim 2, wherein the foam coating is compressed.
Claim 5
Dependent Claim
14 words
A fabric according to claim 1, wherein the base is coated on both sides.
Claim 6
Dependent Claim
21 words
A fabric according to claim 1, including a second layer of vapor-permeable textile laminated onto the coating with the hydrophilic polymer.
Claim 7
Dependent Claim
13 words
A fabric according to claim 1, including protective solid particles within the coating.
Claim 8
Dependent Claim
18 words
A fabric according to claim 1, including protective solid particles on top of and adhered to the coating.
Claim 9
Dependent Claim
15 words
A fabric according to claim 1, wherein the hydrophilic polymer is a hydrophilic acrylic resin.
Claim 10
Dependent Claim
19 words
A fabric according to claim 1, wherein the hydrophilic polymer is a hydrophilic acrylic resin modified with polyvinyl chloride.
Claim 11
Dependent Claim
18 words
A fabric according to claim 1, wherein the hydrophilic polymer is a hydrophilic acrylic resin modified with polyurethane.
Claim 12
Dependent Claim
16 words
A fabric according to claim 1, wherein the coating weighs 50 to 500 g/m 2 .
Claim 13
Dependent Claim
13 words
A protective article of clothing made from a fabric according to claim 1.
Claim 14
Dependent Claim
13 words
A rescue-at-sea garment for aviators made from a fabric according to claim 1.
Claim 15
Dependent Claim
11 words
A sleeping bag made from a fabric according to claim 1.
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) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |