Breathing apparatus and facemasks therefor

Details Breathing apparatus and facemasks therefor Breathing apparatus and facemasks therefor

1984-02-08

1985-08-13

Recla, Henry J.

Surgery

Respiratory method or device

Means for keeping viewing member clear

12820123, 12820125, 12820128, 12820512, A62B 700

Patent

active

045343446

ABSTRACT:
Closed-circuit compressed-oxygen breathing apparatus in which the oxygen supply is used to demist the visor 7 of the facemask 6 or cool the wearer's face before entering an oronasal mask 8 through a one-way valve 13 and mixing with the gas in the breathing circuit.

REFERENCES:
patent: 1366392 (1921-01-01), Lamb et al.
patent: 2168695 (1939-08-01), Asari
patent: 3680556 (1972-08-01), Morgan
patent: 4276877 (1981-07-01), Gdulla
patent: 4404969 (1983-09-01), Cresswell et al.

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