US5043209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent liner for impermeable clothing
Assignee: Department of National Defence
•
Filing: 1989-08-23
•
Granted: 1991-08-27
•
Expires: 2009-08-23
Abstract
Abstract Fluid impermeable, protective clothing is usually impermeable in both directions, and thus sweat is unable to evaporate from the skin or from inner clothing. A buildup of moisture is uncomfortable and, if prolonged, can cause pain and injury. A simple solution to the problem is to insert a two-layer liner in the impermeable clothing which will absorb the sweat. The liner includes an inner layer of vapor permeable, liquid impermeable material such as microporous Teflon (trademark) film, microporous polyurethane film or a hydrophilic polymer coating, and an outer layer of a material highly absorptive of both water vapor and liquid.
Inventors
- 👤 Sylvie Boisse
- 👤 Brian Farnworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:48
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; A; A41; A41D; A41D27/00; A41D27/02; A41D31/00; A41D31/04; A41D31/10; A41D31/102; B32B27/00; B32B27/32; B32B27/36; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0276; B32B2307/00; B32B2307/70; B32B2307/724; B32B2307/726; B32B2307/7265; B32B2317/00; B32B2317/08; B32B2323/00; B32B2323/10; B32B2327/00; B32B2327/12; B32B2327/18; B32B2367/00; B32B2375/00; B32B2437/00; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10S428/913; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/677; Y10T442/682; Y10T442/684
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
77 words
A laminated clothing liner comprising an inner layer permeable to vapour and impermeable to liquid; and an outer layer highly absorptive to vapour and liquid, whereby the liner can absorb sweat while isolating the skin or inner clothing from absorbed moisture, said outer layer being selected from the group consisting of a needle-punched, nonwoven blend of a superabsorbent fiber and polyester, and a thermal bonded, nonwoven blend of a superabsorbent fiber and a thermo-bonding bicomponent of polypropylene.
Claim 2
Dependent Claim
77 words
A laminated clothing liner comprising an inner layer permeable to vapour and impermeable to liquid; and an outer layer highly absorptive to vapour and liquid, whereby the liner can absorb sweat while isolating the skin or inner clothing from absorbed moisture, said outer layer being selected from the group consisting of a needle-punched, nonwoven blend of a superabsorbent fiber and polyester, and a thermal bonded, nonwoven blend of a superabsorbent fiber and a thermo-bonding bicomponent of polypropylene.
Claim 3
Dependent Claim
38 words
A clothing liner according to claim 1, wherein said inner layer is formed of a material selected from the group consisting of water repellent textiles or leather, microporous polytetrafluoroethylene film, microporous polyurethane film and a hydrophilic polymer coating.
Claim 4
Dependent Claim
46 words
A clothing liner according to claim 1, wherein said outer layer is selected from the group consisting of a 70:30 needle-punched, nonwoven blend of a superabsorbent fiber and polyester; and a 50:50 thermal bonded, nonwoven blend of a superabsorbent fiber and a thermo-bonding bicomponent of polypropylene.
Claim 5
Dependent Claim
46 words
A clothing liner according to claim 2, wherein said outer layer is selected from the group consisting of a 70:30 needle-punched, nonwoven blend of a superabsorbent fiber and polyester; and a 50:50 thermal bonded, nonwoven blend of a superabsorbent fiber and a thermo-bonding bicomponent of polypropylene.
References Cited (Backward Citations)
US4009315A
Cited
US4530873A
Cited
US4465730A
Cited
US4433024A
Cited
US4539982A
Cited
US4632860A
Cited
US4857065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-26 | 1995-02-25 | 1995-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-26 | 1999-02-25 | 1999-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-26 | 2003-02-25 | 2003-08-27 | $7700.00 | Window Closed / Lapsed |