Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Reexamination Certificate
2006-01-17
2006-01-17
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
C137S599110, C251S209000
Reexamination Certificate
active
06986361
ABSTRACT:
An electrically-actuated flow controller for compressed air systems is disclosed. The flow controller includes a control panel, a transducer for sampling downstream air pressure, an electrical actuator with an electric motor, and a valve driven by the motor. The flow controller also optionally includes a bypass assembly and battery backup system. The transducer measures downstream pressure, and an electrical actuator incrementally positions the valve to maintain set point pressure between the flow controller and the point of use. By using an electrical actuator rather than the traditional pneumatic actuator, the present invention avoids the contamination and response time problems that have plagued earlier flow controllers.
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Delta Control Products, “Electronic Ball Valve Technical Schematic,” from internet site: www.deltacontrol/UK%20SITE/UKpage4.htm, accessed Feb. 20, 2002, publication place unknown.
Koch Jason T.
Mendoza Michael J.
Hepperle Stephen M.
Maguire Daniel P.
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