Patents by Inventor Keizou Zyokou

Keizou Zyokou 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).

  • Resistance welding control system
    Patent number: 4963707
    Abstract: A resistance welding control system is disclosed which comprises a resistance detection unit for detecting an interelectrode resistance by measuring welding current and voltage applied between electrodes; a compensation section for comparing a resistance value as detected with a predetermined model resistance value and determining an amount of compensation of the welding current in accordance with the difference therebetween; and a current control section for controlling the welding current on the basis of the amount of compensation of the compensation section.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: October 16, 1990
    Assignee: Nippondenso Co., Ltd.
    Inventors: Keizou Zyokou, Shinzo Ito, Tsuyoshi Sugiyama