Filter-type respirator canister

Details Filter-type respirator canister Filter-type respirator canister

1980-09-22

1982-12-28

Recla, Henry J.

Surgery

Respiratory method or device

Means for indicating improper condition of apparatus

12820527, 55DIG33, 55DIG34, 55DIG35, 55274, 116DIG25, 116206, A62B 700

Patent

active

043656277

ABSTRACT:
An improved canister for a filter-type respirator having an end-of-service life warning device which is located in a position such that all air flowing through the canister flows through the warning device after the air has flowed through at least about 50 volume percent of the filtering material contained in the respirator.

REFERENCES:
patent: 4050291 (1977-09-01), Nelson
patent: 4154586 (1979-05-01), Jones et al.

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