Inhalation valve
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United States of America Patent
Stats
-
Jun 26, 1984
Grant Date -
N/A
app pub date -
Jul 1, 1982
filing date -
Jul 1, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An inhalation valve is provided for testing the breathing capacity of a person. The valve is constructed of two plastic moldings which snap together and trap a flexible elastomeric valve diaphragm between them. The valve is provided with a mouthpipe. Exhalation through the mouthpipe deflects the diaphragm to permit substantially unrestricted exhalation. Inhalation is through a laterally displaced passageway having a transverse wall therein to produce a pressure drop. Tubular fittings are provided in the pressure drop area behind the wall and exteriorally of the flow path to provide an input to an electronic apparatus to indicate the efficiency of breathing.
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