Magnetostrictive brake
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United States of America Patent
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Oct 27, 1998
Grant Date -
N/A
app pub date -
Jan 28, 1997
filing date -
Jan 29, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A magnetostrictive brake is provided with an electrically-driven actuator for moving friction materials back and forth toward a rotary member by utilizing a magnetostrictive element which extends and contracts by means of magnetostriction, a fluid-type displacement enlarging mechanism which is provided between the magnetostrictive element and the friction materials and used for enlarging the displacement of the magnetostrictive element and transmitting the enlarged displacement to the friction materials, and bias magnetic field applying means for applying a bias magnetic field to the magnetostrictive element.
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