Breathing valve

Details Breathing valve Breathing valve

1981-12-24

1984-01-31

Schwadron, Martin P.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

13751215, 137854, 137859, 251DIG2, 12820524, A62B 902, F16K 718

Patent

active

044283920

ABSTRACT:
A breathing valve for the selective entry of a gas to be inhaled and for the exit of exhaled gas, which utilizes a rolling diaphragm and flapper valves for its workings which are quiet and are constructed so as to be unlikely to freeze up or become sticky.

REFERENCES:
patent: 3282288 (1966-11-01), Sheppard
patent: 3342200 (1967-09-01), Wilcox
patent: 4172465 (1979-10-01), Dashner

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