Patents by Inventor Shizuo Tsujimoto

Shizuo Tsujimoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Levitation system of a magnetically levitated train
    Patent number: 5222437
    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.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: June 29, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Masayuki Shibata, Naoki Maki, Toshio Saitoh, Takashi Kobayashi, Teruhiro Takizawa, Tadasi Sonobe, Shizuo Tsujimoto, Hideshi Fukumoto