US4860382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective garment
Assignee: Freudenberg Nonwovens Ltd
•
Filing: 1987-12-22
•
Granted: 1989-08-29
•
Expires: 2007-12-22
Abstract
Abstract A protective garment is shown for protecting the wear against noxious chemicals in liquid aerosol and vapor form. The protective garment is made up of two separate plies, the first ply comprising a fire retardant fabric having bonded to it a microporous material arranged such that the microporous material can allow passage of moisture vapor but prevent passage of droplets in liquid; and a second inner ply including a vapor absorbent material.
Inventors
- 👤 Edgar R. Markwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:45
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; A; A41; A41D; A41D13/00; A41D13/02; A62; A62B; A62B17/00; A62B17/006; A62D; A62D5/00; B32B27/00; B32B27/12; B32B27/40; B32B7/00; B32B7/04; B32B7/12; B32B7/14; B32B2305/00; B32B2305/02; B32B2305/026; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2571/00; B32B2571/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A protective suit made up of separate outer and inner plies held together at seams in the suit, the outer ply comprising a fire-retardant fabric having bonded to it a microporous material arranged such that the microporous material arranged such that the microporous material can allow passage of moisture vapor but prevent passage of droplets of liquid; and the inner ply including a vapor-absorbent material; and where in the outer and inner plies have separate openings and separable fastenings means for sewering each of said opening in a closed position, allowing the suit to be removed, whereby the outer ply can be opened while the inner ply is closed.
Claim 2
Dependent Claim
109 words
A protective suit made up of separate outer and inner plies held together at seams in the suit, the outer ply comprising a fire-retardant fabric having bonded to it a microporous material arranged such that the microporous material arranged such that the microporous material can allow passage of moisture vapor but prevent passage of droplets of liquid; and the inner ply including a vapor-absorbent material; and where in the outer and inner plies have separate openings and separable fastenings means for sewering each of said opening in a closed position, allowing the suit to be removed, whereby the outer ply can be opened while the inner ply is closed.
Claim 3
Dependent Claim
36 words
A protective suit according to claim 1, in which the microporous material comprises a film of polyurethane characterized by having a hydrostatic head of at least 700+ cm of water to prevent pressure penetration of liquid.
Claim 4
Dependent Claim
21 words
A protective suit according to claim 2, in which the thickness of the polyurethane film is between 30 to 60 microns.
Claim 5
Dependent Claim
21 words
A protective suit according to claim 3, in which the thickness of the polyurethane film is between 50 and 60 microns.
Claim 6
Dependent Claim
20 words
A protective suit according to claim 1, in which the fire-retardant fabric is the outer layer of the outer ply.
Claim 7
Dependent Claim
17 words
A protective suit according to claim 1, in which the fire-retardant fabric is a woven nylon/modarylic mixture.
Claim 8
Dependent Claim
22 words
A protective suit according to claim 1, in which the fire-retardant fabric is bonded to the microporous material by a discontinuous adhesive.
Claim 9
Dependent Claim
25 words
A protective suit according to claim 1, in which the inner ply is a filter-like fire-retardant fabric comprising a layer of polymeric absorber or charcoal.
Claim 10
Dependent Claim
61 words
A protective suit according to claim 1, including a hood, in which each of the outer and inner plies has a vertical slide fastener at the enter of the front thereof comprising said separable fastening means, which provide a releasable under-chin fastening so that each ply can be separately opened to permit the hood to be removed from a wearer's head.
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) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |