Nippon Steel Corporation

Kajima Corporation

Nippon Steel Engineering Co., Ltd.

Kentaro Chikuma

Takeshi Saito

Masahiro Fujikura

Yousuke Kurosaki

Akira Sakaida

Nobuo Tachibana

Norito Abe

Yoneo Yamada

Hiroshi Ishikawa

Kiyokazu Ichimura

Masanori Karikomi

Masanori Niwa

Satoru Miura

Sadanobu Hirokami

Masayuki Yamashita

A magnetic shield structure having openings, the structure comprising a plurality of similar magnetic blind bodies, each blind bodyhaving an imaginary blind core plane F and a plurality of magnetic material slatsbeing spaced from each other by a distance d required for magnetic shielding, each slatintersecting the blind core plane F at a longitudinal central axis C thereof, the longitudinal central axes of the slats are oriented substantially in parallel to each other on the blind core plane F. The blind bodiesare coupled in a row by serially coupling each slatin each blind bodyto a corresponding slatof adjacent blind bodythrough overlapping or abutting of slat terminal portions, whereby the blind core planes Fa, Fb of the blind bodiesare so coupled as to define a successive magnetic shield plane, and spaces d between adjacent slatsin each blind bodyform openings in the magnetic shield structure. Preferably, three or more magnetic blind bodiesare coupled in a row so as to form a closed magnetic path. The blind bodiesmay be stacked side by side in such a manner that the blind core plane Fa, Fb are parallel to each other and orientation of the slat central axes in each blind bodybeing selected so as to optimize attenuation of magnetic field across the magnetic shield structure.

Magnetic shield structure having openings and a magnetic material frame therefor

Grain-oriented electrical steel sheet and method for producing same

Growing community of inventors

Aichi-ken, Japan

Kentaro Chikuma