Shape memory alloy actuation

Details Shape memory alloy actuation Shape memory alloy actuation

2011-07-05

2011-07-05

Neuder, William P (Department: 3676)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S066700, C166S332800, C251S011000

Reexamination Certificate

active

07971651

ABSTRACT:
An actuator for use in actuating a valve to control the flow of fluids through the valve, the valve having a valve member movable between positions opening and closing the valve. The actuator comprises one or more shape memory alloy elements each being transformable from a martensitic to an austenitic state by applying heat energy to achieve an austenitic transformation. The one or more shape memory alloy elements are connected to the valve member such that austenitic transformation of the one or more shape memory alloy elements induces movement of the valve member from its closing position to its opening position.

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