Valves and valve actuation – Mechanical movement actuator – Plural motions of valve
Reexamination Certificate
2006-04-11
2006-04-11
Look, Edward K. (Department: 3751)
Valves and valve actuation
Mechanical movement actuator
Plural motions of valve
C251S129110, C251S330000, C251S903000
Reexamination Certificate
active
07025329
ABSTRACT:
A needle valve assembly for providing fluid flow control includes a motor; an internally threaded valve body; and an externally threaded plunger threadably engaged with the internally threaded valve body and rotatably and reciprocally driven by the motor, wherein the valve body including a fluid inlet, a fluid outlet, and a flow chamber therebetween, the flow chamber including a flow chamber wall and a flow chamber outlet, the plunger including a flexible needle member reciprocating within the flow chamber outlet to provide variable flow control therethrough, the flexible needle member including a lip seal engageable with the flow chamber wall during reciprocation of the plunger and flexible needle member to provide a seal therebetween.
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Beuerle Stephen C.
Fristoe Jr. John K.
Look Edward K.
Procopio Cory Hargreaves & Savitch LLP
Sequal Technologies, Inc.
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