The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 1993
Filed:
Feb. 18, 1992
Masayuki Shibata, Hitachi, JP;
Naoki Maki, Toukai, JP;
Toshio Saitoh, Hitachi, JP;
Takashi Kobayashi, Hitachi, JP;
Teruhiro Takizawa, Hitachi, JP;
Tadasi Sonobe, Iwaki, JP;
Shizuo Tsujimoto, Hitachi, JP;
Hideshi Fukumoto, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A levitation system of a magnetically levitated train is provided wherein superconducting magnets are installed in a car body, and the first layer and the second layer of levitation coils are so arranged as to be in a shifted location relative to each other in the moving direction of the train. By making the levitation coils two layers and by arranging the two layers in the shifted location relative to each other in the moving direction, amplitude of higher harmonic waves is reduced to a very small level, substantially to zero.