Valve assembly for a replaceable filter respirator

Details Valve assembly for a replaceable filter respirator Valve assembly for a replaceable filter respirator

1985-04-09

1986-12-23

Recla, Henry J.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820617, A62B 700

Patent

active

046306048

ABSTRACT:
A respirator having a disposable filter includes a valve body having a central aperture providing concentric inhalation and exhalation valves.

REFERENCES:
patent: 3029812 (1962-04-01), Matheson
patent: 3307543 (1967-03-01), Silverman
patent: 3621841 (1971-11-01), Austin et al.
patent: 4501272 (1985-02-01), Shigematsu et al.

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