H - Electricity – 05 – K
Patent
H - Electricity
05
K
H05K 9/00 (2006.01) G01R 33/421 (2006.01)
Patent
CA 2069637
ABSTRACT A magnetically shielding structure in which by combining magnetically shielding members of various different properties with each other, its magnetically shielding capability is made to improve, and the greatly lower magnetic field than an external one can be realized effectively. For this purpose, against the penetrating magnetic field whose distribution, on the longitudinal axis of a cylindrical shielding body made of a material manifesting Meissner effect, attenuates toward the center direction of the cylindrical shielding body, a magnetic induction is made to generate in a cylindrical collar made of a high permeability material. Then, the penetrating magnetic field is made shorted magnetically, being adsorbed by the high permeabirity material. For making this possible, the cylindrical collar made of a high permeability material, which has an opening being along the longitudinal direction of the cylindrical shielding body, is provided, leaving a space between the cylindrical shielding body made of the superconductive material manifesting Meissner effect and itself.
Irisawa Daiichi
Matsuba Hironori
Yahara Akihito
Furukawa Denki Kogyo Kabushiki Kaisha
Macrae & Co.
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