Air filtration gas mass

Details Air filtration gas mass Air filtration gas mass

1974-12-23

1976-09-14

Kamm, William E.

Surgery

Truss

Pad

55 95, 55223, 55244, 55355, 55DIG35, 1281426, 1281465, A62B 710

Patent

active

039800806

ABSTRACT:
An air filtration unit of the type having a liquid filtration medium in a canister with air entering below the level of the liquid, bubbling up into an upper air chamber and thence conducted to a face mask, is simplified for use not only in sedentary occupations but so that it can be used by workmen in strenuous occupations requiring leaning over, lying down, etc. One way valves assure that only scrubbed air enters the face mask, the mask is peripherally sealed and float, or gravity, valves prevent leakage into the mask, or out of the canister, when the unit is in abnormal position. In non-portable form, air filtration masks, peripherally sealed on the wearer's face have a common air chamber with air drawn thereinto from outisde the pollution environment.

REFERENCES:
patent: 300246 (1884-06-01), Goldberg
patent: 1196539 (1916-08-01), Goldberg
patent: 1789262 (1931-11-01), Monro et al.
patent: 2088720 (1937-08-01), Poliniak
patent: 2725876 (1955-12-01), Maille
patent: 2875759 (1959-03-01), Gallgher, Jr.
patent: 2895472 (1959-07-01), Matheson

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