Patent ID: 6595487
Filing Date: 2003-07-22
Classification: E21B,F16K

Abstract:
An actuator for an undersea valve with an axially movable spindle, the actuator comprising:an electric motor having an output arranged and adapted to be operatively coupled to an axially movable spindle of an undersea valve; an electrical storage unit that is a primary source of power for said motor; a communication device that communicates with an external control; and a control unit connected to said motor, said electrical storage unit, said communication device, and to an input for receiving power from an external source that is a secondary source of power for said motor, said control unit having a programmable processor that monitors said electrical storage unit and controls operation of said motor, wherein when said electrical storage unit has insufficient electrical power said processor communicates with the external control through said communication device and delays operating said motor to cause the undersea valve to close awaiting a response from the external control.