Air-directing apparatus for air mask

Details Air-directing apparatus for air mask Air-directing apparatus for air mask

1988-06-27

1990-01-02

Burr, Edgar S.

Surgery

Respiratory method or device

Face mask covering a breathing passage

2 9, 12820628, A61M 1606

Patent

active

048906093

ABSTRACT:
This invention is a device for orally directing air while wearing an air mask. In the invention, a tube extends from outside the air mask, through the air mask, and into the mask wearer's mouth. The tube is fitted with means to seal its passage through the mask and may also include a one-way valve to prevent aspiration through it. In a preferred embodiment, the invention is manufactured separately from an air mask and may be reused after the air mask becomes worn out.

REFERENCES:
patent: 596919 (1898-01-01), Steves
patent: 835075 (1906-11-01), Mahaffy
patent: 996135 (1911-06-01), Poe
patent: 1366392 (1921-01-01), Lamb
patent: 1395948 (1921-11-01), Drager
patent: 1978994 (1934-10-01), Fortunato
patent: 2383649 (1945-08-01), Heidbrink
patent: 2619085 (1952-11-01), Bradley
patent: 3357426 (1967-12-01), Cohen
patent: 3602219 (1971-08-01), Warncke
patent: 4573463 (1986-03-01), Hall
patent: 4655213 (1987-04-01), Rapoport et al.

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