Inhalation valve
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United States of America Patent
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Nov 3, 1998
Grant Date -
N/A
app pub date -
Jul 1, 1996
filing date -
Jun 30, 1995
priority date (Note) -
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Abstract
Film made of floppy and deformable synthetic resin is used as a valve body of an inhalation valve and attached to the surface of a valve seat which is formed to a concave groove like shape having an arbitarily sectional view. The said valve body can not be applied to a conventional valve seat which has a flat surface. The inhalation valve is embedded to the breathing-in space of mask in which a filter pad is put in and prevent the valve body which separates from the seat at inhalation timing from entering into face contact part.
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