Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1989-10-03
1990-07-17
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335216, 324318, H01F 722
Patent
active
049423797
ABSTRACT:
A superconductor for magnetic field shield comprising closed-ring disc-shaped superconductive magnetic field shielding members and spacing members having the same shape as that of the magnetic field shielding member and alternately laminated with the shielding members, the superconductor for magnetic field shield being characterized in that the shield has an extremely superior and stable magnetic field shielding effect without any secular reduction of the shielding effect and capable of providing a large shielding space using a minimum amount of material.
REFERENCES:
patent: 4851799 (1989-07-01), Hilal
patent: 4890082 (1989-12-01), Fujita
Inoue Masaru
Ogawa Souichi
Sugioka Takao
Harris George
Koatsu Gas Kogyo Co. Ltd.
Osaka Prefecture
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