Combination umbrella and inverted bi-directional valve
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United States of America Patent
Stats
-
Jul 17, 2007
Grant Date -
Nov 24, 2005
app pub date -
May 19, 2004
filing date -
May 19, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A combination valve including a valve body having an inverted bi-directional valve portion and an umbrella portion is disclosed. In accordance with one aspect of the invention, a combination valve includes a valve body with a substantially cylindrical portion defining a flow path, a resilient umbrella valve portion extending annularly from the valve body and an inverted bi-directional valve portion provided in the flow path. The inverted bi-directional valve portion includes an interior surface, an exterior surface and at least one normally closed slit extending therebetween, wherein the exterior surface of the inverted bi-directional valve portion includes a generally concave curved portion when the slit is closed.
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