Patents by Inventor Kazuo Kano

Kazuo Kano 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).

  • Protection system for power receiving station
    Patent number: 5892645
    Abstract: A protection apparatus for a spot network substation has a plurality of receiving lines connected between a network bus and a plurality of power sources. Each receiving line is connected to a primary switching device, a network transformer and a protector CB. A detector for detecting a phase of each receiving line voltage and a judging unit for judging the detected phase are provided on the primary side of each network transformer. A previously stored basic phase is compared with the detected phase of the receiving line voltage. If there is a lag in the detected phase of the receiving line voltage, it is judged to be a power-stop of the corresponding power source and the protector CB is tripped.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: April 6, 1999
    Assignees: Hitachi, Ltd., The Tokyo Electric Power Co., Inc.
    Inventors: Yoshiyasu Watanabe, Toru Tanimizu, Kazuo Kano, Yasunobu Kanou, Toshio Horikoshi, Koji Kondou, Ryutaro Yamamoto, Nobuhiro Kuroda