Patents by Inventor Masao Ishigure

Masao Ishigure 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).

  • Patent number: 4559530
    Abstract: An overcurrent condition display suspended directly from a distribution cable for displaying overcurrent conditions in the cable and for promptly locating spots of accidents due to overcurrent conditions comprises a current sensor section having a current transformer, a drive section provided with a drive element adapted to be driven by the sensed overcurrent and with a force storage member adapted to be actuated by the drive element and to act as a restoring member as well for the drive element, a drive-transmission section actuated by the force storage member and a display section having a display tube with a transparent bottom, a viscous fluid stored in the tube and a display element connected to the drive-transmission section for vertical motion through the fluid. The overcurrent condition is displayed when the display element is hoisted by the drive-transmission section.
    Type: Grant
    Filed: October 5, 1982
    Date of Patent: December 17, 1985
    Assignee: Takamatsu Electric Works, Ltd.
    Inventors: Masao Ishigure, Mitsuo Ota, Naotoshi Takaoka, Mitsuharu Kudomi