Face mask

Details Face mask Face mask

1987-03-20

1989-07-25

Hindenburg, Max

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820619, A62B 716

Patent

active

048503479

ABSTRACT:
A face mask to be worn upon the face of a wearer and for providing filtering of particular impurities in the air, including at least one layer of flexible plastic material molded generally to conform to the contours of the face of the wearer and forming a flexible support carrier for filter material and with the one layer formed of openwork flexible plastic material for providing a plurality of perforations through the first layer for allowing the free passage of air through the one layer, and a separate layer of filter material supported by the one layer of flexible plastic material and with the filter material filtering out the particular impurities in the air.

REFERENCES:
patent: 3586565 (1968-12-01), Fielding
patent: 3695799 (1972-10-01), Held, Jr.
patent: 3757777 (1973-09-01), Kaufman
patent: 4319567 (1982-03-01), Magidson
patent: 4600002 (1986-07-01), Yanek et al.

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