One way flow device
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United States of America Patent
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-
Sep 8, 1992
Grant Date -
N/A
app pub date -
Mar 27, 1991
filing date -
Mar 27, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A one-way flow device (10) for use in a passageway (18) is provided. The device (10) comprises first (12) and second (14) walls attached together to form a passageway (18). A flexible diaphragm (20) having at least one orifice (24) extends across the passageway (18). The diaphragm (20) flexes between open and closed positions responsive to flow conditions in the passageway (18). In the open position, the orifice (24) is exposed, allowing fluid flow. In the closed position, the orifice (24) is sealed by the first sheet (12), substantially preventing fluid flow.
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