Memory wire actuated control valve

Details Memory wire actuated control valve Memory wire actuated control valve

2005-01-18

2005-01-18

Hirsch, Paul J. (Department: 3754)

Valves and valve actuation

Electrically actuated valve

Having element dimensionally responsive to field

C251S294000

Reexamination Certificate

active

06843465

ABSTRACT:
A memory wire actuated control valve comprises a memory wire actuator operatively coupled to a fluid control valve. The memory wire actuator includes a housing having an interior cavity enclosing an electrical platform assembly, an activation wire and a transfer mechanism. The activation wire is formed of a shape memory alloy, often called a “memory wire” or “muscle wire.” The activation wire is electrically connected to the electrical platform and mechanically coupled to the transfer mechanism. The actuator is activated by conducting electrical current through the activation wire causing the wire to contract thereby actuating the transfer mechanism. The transfer mechanism is operable coupled to the fluid control valve such that actuated and de-actuating the transfer mechanism open and closes the valve.

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