Smoke mask apparatus

Details Smoke mask apparatus Smoke mask apparatus

1976-10-26

1978-07-04

Michell, Robert W.

Surgery

Truss

Pad

128147, 1281426, 1281424, A62B 700

Patent

active

040982700

ABSTRACT:
A smoke mask comprises a transparent face shield covering a wearer's nose and eyes in a substantially airtight manner, and a replaceable air filtration cartridge system attached to the face shield and provided with a conduit leading into the mouth of the wearer, through which he breathes. Exhaled air passes through the air filter in a reverse direction from that inhaled and never comes into contact with the interior surface of the lens in the face shield, thus eliminating the possibility of fogging.

REFERENCES:
patent: 703948 (1902-07-01), Muntz
patent: 1320935 (1919-11-01), Schwartz
patent: 2665686 (1954-01-01), Nood et al.

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