Self-protecting and conditioning memory metal actuator

Details Self-protecting and conditioning memory metal actuator Self-protecting and conditioning memory metal actuator

1983-03-14

1985-01-01

Broome, Harold

Power plants

Motor operated by expansion and/or contraction of a unit of...

Mass is a solid

337140, F03G 706, H01H 6104

Patent

active

044909756

ABSTRACT:
A shape-memory-effect actuator is provided having a shape-memory-alloy spring and a compensator spring. The alloy spring is operatively connected to a concentrically-mounted compensator spring by the use of a protective support housing which surrounds the alloy spring. The actuator includes a shape-memory-alloy spring and a compensator spring that regulates the operating conditions of the shape-memory-alloy spring to a chosen corresponding memory relaxation curve. The memory relaxation curve defines the actuator's operating stress, stroke and life.

REFERENCES:
patent: 3594674 (1971-07-01), Willson
patent: 3634803 (1972-01-01), Willson et al.
patent: 4275370 (1981-06-01), Sims

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