Smoke mask
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United States of America Patent
Stats
-
Feb 12, 1985
Grant Date -
N/A
app pub date -
Jan 27, 1983
filing date -
Jan 27, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
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Cited Art Landscape
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