Shape memory actuated switching device

Details Shape memory actuated switching device Shape memory actuated switching device

1995-05-04

1997-11-04

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With longitudinally expansible solid element

337123, H01H 7118

Patent

active

056844484

ABSTRACT:
A T-shaped member is pivotally mounted to a support plate, and has first and second shape memory wires attached at first ends thereof to opposing portions of the T-shape. Second opposing free ends of the shape memory wires are secured to the support plate. Electrical current is conducted alternately through the first and second shape memory wires to cause the wires to contract in alternating tandem, to thereby cause the T-shaped member to move between first and second positions. Pivotal movement of the T-shaped member can be used to actuate and/or reactivate a switch device.

REFERENCES:
patent: 3725835 (1973-04-01), Hopkins et al.
patent: 4544988 (1985-10-01), Hochstein
patent: 4772807 (1988-09-01), Bouvot
patent: 4887430 (1989-12-01), Kroll et al.
patent: 5226619 (1993-07-01), Alger

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