Surgery – Respiratory method or device – Face mask covering a breathing passage
Patent
1986-10-20
1988-01-19
Coven, Edward M.
Surgery
Respiratory method or device
Face mask covering a breathing passage
12820612, 12820619, A62B 1808
Patent
active
047199113
ABSTRACT:
An air filter mask with a cup-shaped air-permeable filter element having a perimetrical edge which fits against the face of the person circumjacent the nose and mouth such that substantially all of the air breathed by the person passes through the filter element. A mouthpiece configured to be received and gripped between the upper lip and the upper teeth and gums of the person is attached to a shaft configured to extend outwardly from the mouth between the lips of the person. A pair of annular retainers are disposed about the shaft in slidable frictional engagement therewith, one on each side of the filter element for engaging the filter element therebetween and retaining the filter element in a selected position with respect to the shaft.
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Coven Edward M.
Lacyk J. P.
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