Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Reexamination Certificate
2011-05-31
2011-05-31
Fristoe, Jr., John K (Department: 3753)
Valves and valve actuation
Electrically actuated valve
Remote or follow-up control system for electrical actuator
C251S129010
Reexamination Certificate
active
07950622
ABSTRACT:
Systems, apparatuses and methods for controlling valves through controlled power escalation towards the actuation threshold of the valve. A power signal is applied to a control input of a valve at a level less than a valve switch threshold at which the valve will be actuated. The power to the control input is then progressively increased. The valve is actuated when the power signal eventually reaches the valve switch threshold, thereby actuating the valve using a power signal commensurate with the actual valve switch threshold of the particular valve and its current operating conditions.
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Fristoe, Jr. John K
Hollingsworth & Funk LLC
Honeywell International , Inc.
Jen Marina Tiet
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