Super magnetostriction type actuator

Details Super magnetostriction type actuator Super magnetostriction type actuator

1993-10-07

1994-11-01

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnetostrictive-type device

310 25, H01L 4112, H02K 3500, H02N 200

Patent

active

053610539

ABSTRACT:
In a super magnetostriction type actuator constructed such that a super magnetostriction rod is extended/contracted by application of a magnetic field from a solenoid coil, and a drive object is moved in response to the extension/contraction, a locating member for locating the super magnetostriction rod thermally deforms in correspondence with a thermal expansion of the super magnetostriction rod so as to permit an extension of the super magnetostriction rod due to the thermal expansion thereof. As a result, variation in spring loading and lift with thermal expansion of the super magnetostriction rod can be avoided. Also, the magnetostriction characteristic of the locating member is opposite that of the super magnetostriction rod allowing for greater relative movement of the super magnetostriction rod upon application of a magnetic field.

REFERENCES:
patent: 5184037 (1993-02-01), Kobayashi et al.

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