US3763497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire sate or burn preventive clothing
Assignee: Burlington Industries Inc
•
Filing: 1971-04-29
•
Granted: 1973-10-09
•
Expires: 1991-04-29
Abstract
Abstract A fire-resistant garment is constructed of inner and outer fabric layers which define a region to which a source of noncombustible gas is connected through a valve. The valve is operable either manually or automatically to introduce the gas to this region when fire or heat is encountered. The gas leaks through the porous outer layer to reduce combustion on that layer and also creates an insulating space between the layers. The layers may be made of cotton treated with a fire-resistant material or of noncombustible fibers.
Inventors
- 👤 J Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:45
CPC Classifications
A; A62; A62B; A62B17/00; A62B17/003
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
134 words
A fire-resistant garment comprising, an outer layer of at least partially porous fabric which envelopes at least a portion of the wearer''s body and means for introducing pressurized noncombustible gas into the region between said outer layer and the wearer''s body whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids, said introducing means comprises a source of noncombustible gas, a conduit means connecting said source to said region, valve means disposed within said conduit for controlling gas flow through said conduit, a temperature sensor which produces a signal when it senses a certain temperature and an operator responsive to the output from said temperature sensor for actuating said valve means to permit gas to flow from said source to said region.
Claim 2
Dependent Claim
134 words
A fire-resistant garment comprising, an outer layer of at least partially porous fabric which envelopes at least a portion of the wearer''s body and means for introducing pressurized noncombustible gas into the region between said outer layer and the wearer''s body whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids, said introducing means comprises a source of noncombustible gas, a conduit means connecting said source to said region, valve means disposed within said conduit for controlling gas flow through said conduit, a temperature sensor which produces a signal when it senses a certain temperature and an operator responsive to the output from said temperature sensor for actuating said valve means to permit gas to flow from said source to said region.
Claim 3
Dependent Claim
125 words
A fire-resistant garment comprising an outer layer of at least partially porous fabric which envelopes at least a portion of the wearer''s body an inner layer of fabric which covers at least a portion of the wearer''s body and which is enveloped by said outer layer, and means for introducing pressurized noncombustible between said outer layer and said inner layer whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids, said inner and outer layers being arranged together so as to form a plurality of tubular cells, each of which is defined by a region enclosed between said inner and outer layers and adjacent points of contact between said inner and outer layers.
Claim 4
Dependent Claim
125 words
A fire-resistant garment comprising an outer layer of at least partially porous fabric which envelopes at least a portion of the wearer''s body an inner layer of fabric which covers at least a portion of the wearer''s body and which is enveloped by said outer layer, and means for introducing pressurized noncombustible between said outer layer and said inner layer whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids, said inner and outer layers being arranged together so as to form a plurality of tubular cells, each of which is defined by a region enclosed between said inner and outer layers and adjacent points of contact between said inner and outer layers.
Claim 5
Dependent Claim
22 words
The garment claimed in claim 12 wherein passage means connects each tubular cell of said tubular cell arrangement with said introducing means.
Claim 6
Dependent Claim
86 words
A fire-resistant garment comprising an outer layer of porous fabric which envelopes the entire portion of the wearer''s body except for the front of the head, said fabric having a twill type construction to insure a relatively constant porosity throughout the various portions of the fabric, and means for introducing pressurized noncombustible gas into the region between said outer layer and the wearer''s body whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids.
Claim 7
Dependent Claim
86 words
A fire-resistant garment comprising an outer layer of porous fabric which envelopes the entire portion of the wearer''s body except for the front of the head, said fabric having a twill type construction to insure a relatively constant porosity throughout the various portions of the fabric, and means for introducing pressurized noncombustible gas into the region between said outer layer and the wearer''s body whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids.
Claim 8
Dependent Claim
58 words
The garment claimed in claim 4 wherein said introducing means comprises a source of noncombustible gas, conduit means connecting said source to said region and valve means associated with said conduit for controlling gas flow through said conduit, said valve means being actuable by the wearer for permitting said gas to flow from said source to said region.
Claim 9
Dependent Claim
19 words
The garment claimed in claim 4 wherein at least the outer fabric is comprised of an essentially non-burning fabric.
Claim 10
Dependent Claim
46 words
The garment claimed in claim 4 further including an inner layer of fabric which covers at least a portion of the wearer''s body and is enveloped by said outer layer such that the noncombustible gas is introduced into the region between said outer and inner layers.
Claim 11
Dependent Claim
22 words
The garment claimed in claim 7 wherein the inner and outer layers are arranged together in a tubular cell type of construction.
Claim 12
Dependent Claim
21 words
The garment of claim 7 wherein the inner and outer layers are connected together at a plurality of points by threads.
Claim 13
Dependent Claim
75 words
A fire-resistant garment comprising an outer layer of at least partially porous cotton fabric treated with a fire-resistant material which envelopes the entire portion of the wearer''s body except for the front of the head and means for introducing pressurized noncombustible gas into the region between said outer layer and the wearer''s body whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids.
Claim 14
Dependent Claim
75 words
A fire-resistant garment comprising an outer layer of at least partially porous cotton fabric treated with a fire-resistant material which envelopes the entire portion of the wearer''s body except for the front of the head and means for introducing pressurized noncombustible gas into the region between said outer layer and the wearer''s body whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids.
Claim 15
Dependent Claim
58 words
The garment claimed in claim 10, wherein said introducing means comprises a source of noncombustible gas, conduit means connecting said Source to said region and valve means associated with said conduit for controlling gas flow through said conduit, said valve means being actuable by the wearer for permitting said gas to flow from said source to said region.
Claim 16
Dependent Claim
19 words
The garment claimed in claim 10, wherein at least the outer fabric is comprised of an essentially non-burning fabric.
Claim 17
Dependent Claim
46 words
The garment claimed in claim 10, further including an inner layer of fabric which covers at least a portion of the wearer''s body and is enveloped by said outer layer such that the noncombustible gas is introduced into the region between said outer and inner layers.
Claim 18
Dependent Claim
22 words
The garment claimed in claim 13 wherein the inner and outer layers are arranged together in a tubular cell type of construction.
Claim 19
Dependent Claim
21 words
The garment of claim 13, wherein the inner and outer layers are connected together at a plurality of points by threads.
Claim 20
Dependent Claim
77 words
A fire-resistant garment comprising an outer layer of at least partially porous fabric comprised of a blend of cotton and nylon which envelopes the entire portion of the wearer''s body except for the front of the head and means for introducing pressurized noncombustible gas into the region between said outer layer and the wearer''s body whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids.
Claim 21
Dependent Claim
77 words
A fire-resistant garment comprising an outer layer of at least partially porous fabric comprised of a blend of cotton and nylon which envelopes the entire portion of the wearer''s body except for the front of the head and means for introducing pressurized noncombustible gas into the region between said outer layer and the wearer''s body whereby said gas forms a thermally insulating layer and flows through said layer to blow out flame and prevent entry of fluids.
Claim 22
Dependent Claim
58 words
The garment claimed in claim 16 wherein said introducing means comprises a source of noncombustible gas, conduit means connecting said source to said region and valve means associated with said conduit for controlling gas flow through said conduit, said valve means being actuable by the wearer for permitting said gas to flow from said source to said region.
Claim 23
Dependent Claim
19 words
The garment claimed in claim 16 wherein at least the outer fabric is comprised of an essentially non-burning fabric.
Claim 24
Dependent Claim
46 words
The garment claimed in claim 16 further including an inner layer of fabric which covers at least a portion of the wearer''s body and is enveloped by said outer layer such that the noncombustible gas is introduced into the region between said outer and inner layers.
Claim 25
Dependent Claim
22 words
The garment claimed in claim 19, wherein the inner and outer layers are arranged together in a tubular cell type of construction.
Claim 26
Dependent Claim
21 words
The garment of claim 19, wherein the inner and outer layers are connected together at a plurality of points by threads.
References Cited (Backward Citations)
US2016137A
Cited
US2826758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |