Smoke mask

Details Smoke mask Smoke mask

1983-01-27

1985-02-12

Recla, Henry J.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

128728, 128914, 12820328, A61M 1600

Patent

active

044984723

ABSTRACT:
A protective breathing apparatus for traversing toxic smoke zones, having a face mask portion covering the nose and mouth of a user in a sealed relationship to the face, a pleated flexible vessel made of a gas-impermeable material and capable of containing ambient air, and a sealed air passageway between the mask and vessel. When not in use, the vessel can be tightly compressed and reduced in size for easy portability; however, for use, the vessel can be instantly expanded, drawing at least 60 cubic inches of ambient air therein.

REFERENCES:
patent: 2007330 (1935-07-01), Hicks
patent: 4032991 (1977-07-01), Vandeweghe
patent: 4345605 (1982-08-01), Geneg

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