Face mask seal
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United States of America Patent
Stats
-
May 19, 1987
Grant Date -
N/A
app pub date -
Nov 12, 1985
filing date -
Nov 12, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A conformal seal carried on a face mask is disclosed herein which is mounted about the edge marginal peripheral region of a rigid shell intended to be placed over the nose and mouth areas of a user. The seal includes an endless toroid made with a pliable membrane preferably filled with a deformable filler material so, that upon donning the mask, the seal causes the filler material volume to become smaller in cross section so that its peripheral length is shorter or reduced in cross section as compared with the peripheral length of the toroidal membrane. Thus, the slack membrane allows the filler material to conform to and seal with any irregular face against which it is applied.
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Family
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Cited Art Landscape
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