Wells – With electrical means – Electrical motor
Reexamination Certificate
2005-10-11
2005-10-11
Walker, Zakiya (Department: 3672)
Wells
With electrical means
Electrical motor
C166S066700, C166S097100, C166S332100
Reexamination Certificate
active
06953084
ABSTRACT:
An electrical actuator is particularly suited for driving a wellhead valve for regulating the flow of natural gas from a production well. The electrical actuator can be driven using the existing local power supply in wellhead valve systems, typically a solar panel and a battery. The electrical actuator may include a gear reduction train, a brake and a manual input override with clutch protection. The electrical actuator can be configured in three different operational modes that provides a predetermined position upon power loss including fail-bias fixed, fail open and fail bias closed.
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Greeb Kevin E.
Hybeck Roger T.
Kleckler Joel W.
Stewart Jeffrey T.
Sweer Grant A.
Reinhart Boerner Van Deuren P.C.
Walker Zakiya
Woodward Governor Company
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