Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate
2007-07-17
2007-07-17
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Direct response valves
C137S493100, C137S493900, C137S512300
Reexamination Certificate
active
10848782
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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Krishnamurthy Ramesh
Thompson Hine LLP
Vernay Laboratories, Inc.
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