Scavenging mask
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United States of America Patent
Stats
-
Feb 28, 1989
Grant Date -
N/A
app pub date -
Feb 1, 1988
filing date -
Feb 1, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Removable apparatus suitable for scavenging gas from the vicinity of a gas delivery mask applied to a face. The mask has a convex outer surface, and the apparatus comprises a cup having an inner concave surface adapted to form a gap between it and the convex surface of the mask when the cup is positioned over the mask. The cup is adapted so as not to contact the face when positioned over the mask when the mask is placed over the face. Also provided is an aperture in the cup for allowing evacuation of the gas from the gap.
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Family
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