Patent US3925823A successfully refreshed from Google Patents.
US3925823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wettable fire fighters{3 {0 garment
Assignee: United States Department of the Navy
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Filing: 1973-03-08
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Granted: 1975-12-16
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Expires: 1993-03-08
Abstract
Abstract A non-reflective, wettable fire fighters'' suit is described which provides protection against flames and heat by wetting the suit thoroughly before entry into a fire zone and thereafter periodically spraying the suit with extinguishing agent to maintain the protection for an extended time in the fire zone.
Inventors
- 👤 Zelig Kupferman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:37
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; A; A62; A62B; A62B17/00; A62B17/003; A41; A41D; A41D31/00; A41D31/04; A41D31/08; A41D31/085; B32B2262/00; B32B2262/06; B32B2262/062; B32B2262/08; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2437/00; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
211 words
A non-reflective wettable fire fighters'' suit for use in close proximity to and for brief emergency entry into fires where high heat fluxes are encountered comprising: a plurality of layers of material assembled in suit form, said layers including an outer heat shield made of an open weave flame resistant fabric; a next adjacent inner layer made of a fibrous batt having a capability of substantially instantaneously passing water therethrough, said batt being needled-punched to the open weave fabric so that the two fabrics are permanently interlocked; a next adjacent inner layer made of a water absorbent fibrous felt material to act as a water reservoir and provide for the capillary transfer of water received through said outer heat shield and said fibrous batt; a next adjacent inner layer made of a coated flame resistant nylon fabric to provide a barrier substantially impermeable to gas and liquids; and a next adjacent inner quilted fabric lining made of insulating material to protect the wearer from the conductive heat of a fire after first having said garment saturated with water and thereafter periodically wetted while in close proximity to the fire, whereby a person wearing the garment may closely approach a fire and remain in close proximity thereto for brief periods of time.
Claim 2
Dependent Claim
211 words
A non-reflective wettable fire fighters'' suit for use in close proximity to and for brief emergency entry into fires where high heat fluxes are encountered comprising: a plurality of layers of material assembled in suit form, said layers including an outer heat shield made of an open weave flame resistant fabric; a next adjacent inner layer made of a fibrous batt having a capability of substantially instantaneously passing water therethrough, said batt being needled-punched to the open weave fabric so that the two fabrics are permanently interlocked; a next adjacent inner layer made of a water absorbent fibrous felt material to act as a water reservoir and provide for the capillary transfer of water received through said outer heat shield and said fibrous batt; a next adjacent inner layer made of a coated flame resistant nylon fabric to provide a barrier substantially impermeable to gas and liquids; and a next adjacent inner quilted fabric lining made of insulating material to protect the wearer from the conductive heat of a fire after first having said garment saturated with water and thereafter periodically wetted while in close proximity to the fire, whereby a person wearing the garment may closely approach a fire and remain in close proximity thereto for brief periods of time.
Claim 3
Dependent Claim
52 words
The garment as defined in claim 1 wherein the next adjacent water absorbent layer is varied in thickness to absorb the desired amount of water and to provide a time control for the escape thereof in the form of vapor, said layer not bound to the fabric on either side of it.
Claim 4
Dependent Claim
66 words
The garment as defined in claim 2 wherein said outermost layer is made of wool, said next adjacent layer is made of rayon, said next adjacent layer is made of an intimate 50/50 blend of rayon and wool, said next adjacent layer is made of nylon taffeta and is coated with neoprene on its outer surface, and said next adjacent layer is made of quilted rayon-wool.
References Cited (Backward Citations)
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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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |