Rebreathing mask

Details Rebreathing mask Rebreathing mask

1988-03-28

1989-01-24

Burr, Edgar S.

Surgery

Respiratory method or device

Face mask covering a breathing passage

12820621, 12820626, 12820525, 12820027, A62B 1802

Patent

active

047994770

ABSTRACT:
A face mask is disclosed for enclosing the nose and mouth of humans and defining an air chamber from which a human may inhale and exhale gases. The mask comprises an inflatable bladder that encircles the air chamber, the bladder having elliptical perforations that are spaced therearound to emit air from the bladder into direct surface contact with the face of the person wearing the mask. Means is also provided for introducing air into both the bladder and the air chamber.

REFERENCES:
patent: 2391565 (1945-12-01), Grindrod et al.
patent: 3330273 (1967-07-01), Bennett
patent: 3441020 (1969-04-01), Wortz et al.
patent: 4258710 (1981-03-01), Reber

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