Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1989-07-10
1991-07-16
Buffalow, Edith
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428163, 428421, 4284777, 428688, 428921, 428500, 428516, 4284747, B32B 300
Patent
active
050324462
ABSTRACT:
A fire protective blanket is fabricated by sealing and forming between two heets of plastic material a pocket or quilt design of fire extinguishing chemical in powder form which is contained in the formed pockets and selected from potassium hydrogen carbonate, sodium hydrogen carbonate, and the reaction product of potassium hydrogen carbonate and urea. A thickness from about 2 millimeters to about 5 millimeters has been found adequate for the plastic sheet material selected from poly-p-ethylene terephthalamide (Kevlar) or polyethylene. The sealed pocket or patch quilt design is to ensure against the powder from becoming nonuniformly distributed throughout the blanket and to ensure that no settling of the chemical takes place as well. The action mechanism, which can extinguish gasoline fires in millisecond time frames, is due to the rupture of the pockets containing the fire extinguishing chemicals when the gasoline is ignited. The fire extinguishing powder becomes dispersed throughout the immediate environment, and interacts with the fireball, and quenches it. The fire protective blanket is useful in quickly extinguishing automobile engine fires, lawnmower fires, and other fires resulting from burning materials including other liquids, solid, or combinations thereof. When used under an automobile hood in combination with the sound and heat barrier, the fire protective blanket should be installed as the outer layer toward the motor. The plastic material should be fabricated from a higher temperature withstanding material such as FTE (polytertrafluoroethylene) or a copolymer of tetrafluoroethylene and hexafluoropropylene (FEP) or more broadly identified as fluorinated ethylenepropylene resin.
REFERENCES:
patent: 3905849 (1975-09-01), Bomboire
patent: 4297402 (1981-10-01), Kinbara et al.
patent: 4803112 (1989-02-01), Kakimoto et al.
patent: 4849273 (1989-07-01), Skinner et al.
patent: 4888233 (1989-12-01), Brew
Buffalow Edith
Bush Freddie M.
United States of America as represented by the Secretary of the
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