Patents by Inventor Yoshio Shiotani

Yoshio Shiotani 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).

  • Spot welder
    Patent number: 4963712
    Abstract: A spot welder comprising a movable truck which is movable along a workpiece, and first, second and third electrodes supported on the truck. The first and second electrodes are adapted to pair with each other for series welding, and one of the first and second electrodes is adapted to pair with the third electrode for indirect welding. Depending on the state of the site of the weld, welding can be performed by selectively using either series or indirect-spot welding. Mechanisms are provided for easily and rapidly switching between the two welding types.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: October 16, 1990
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Hideyuki Etoh, Kozo Shida, Toshiyuki Tange, Yoshio Shiotani