Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnetostrictive-type device
Patent
1995-01-11
1996-12-17
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnetostrictive-type device
335216, 310 26, 505211, H01F 700, H01F 100, H01F 600, H01L 4106
Patent
active
055857728
ABSTRACT:
An actuator in which a magnetostrictor is subjected to magnetic fields produced by a superconducting coil, and the magnetostrictor and coil are maintained at temperatures below the magnetic transition temperature of the magnetostrictor and the superconducting temperature of the coil, typically at temperatures in the range of about 4 to about 130 degrees Kelvin. The magnetostrictor is a laminated Terbium Dysprosium (TbDy) alloy structure and the coil includes high temperature superconducting oxide material. The laminations of the TbDy structure are mechanically loaded in compression and each has a thickness substantially equal less than or equal to the depth of field penetration, and a cooler maintains both the TbDy and superconductor at their optimum temperatures.
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Joshi Chandrashekhar H.
Rodenbush Anthony J.
Russo Carl J.
Voccio John P.
American Superconductor Corporation
Picard Leo P.
Ryan Stephen T.
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