Respiratory device for catastrophic fires and/or smog weather co

Details Respiratory device for catastrophic fires and/or smog weather co Respiratory device for catastrophic fires and/or smog weather co

1979-06-19

1981-10-27

Hart, Charles N.

Gas separation

With remote fan or pump and unconfined flow to separator

55387, 55279, 55524, 55DIG35, 12820527, 12820528, 12820619, 422120, B01D 3914, B01D 5304, B01D 5322

Patent

active

042971179

ABSTRACT:
A fireproof respiratory face mask for use in fires and smog has a granular expanded calcium aluminum silicate base material coated with layers of soda lime, active carbon dust, copper dust soaked into a caustic soda solution and manganese dioxide dust held between two layers of ceramic fiber fleece-like materials felted together to hold the coated granules. The face mask is stored in an easy opening ceramic fiber fireproof package with a pair of fireproof gloves.

REFERENCES:
patent: 2758671 (1956-08-01), Silverman et al.
patent: 2821261 (1958-01-01), Vixler et al.
patent: 3196871 (1965-07-01), Hormats et al.
patent: 3475189 (1969-10-01), Carter et al.
patent: 3971373 (1976-07-01), Braun
patent: 4160059 (1979-07-01), Samejima
Fieldner, A. C. et al. "Gas Masks for Gases Met in Fighting Fires" Dep. of Interior, Bureau of Mines, Tech. Paper 248, 1921.
Katz, S. H. et al. "The Universal and the Fireman's Gas Masks" Dep. of Interior, Bureau of Mines, Tech. Paper 300, 1923.

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