Patents by Inventor Toshihide Mitomo

Toshihide Mitomo 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).

  • Gas-insulated switchgear apparatus
    Patent number: 4745522
    Abstract: A gas insulated switchgear apparatus, in particular a phase-separated, double main bus-type switchgear apparatus, in which first and second phase-separated main buses are interchangeable and are arranged in horizontal planes in such a manner as to reduce the space needed for the apparatus.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: May 17, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Toshihide Mitomo, Satoshi Miwada, Shigetaka Takeuchi
  • Gas-insulated switchgear
    Patent number: 4677525
    Abstract: Disclosed is a gas-insulated switchgear in which three circuit breakers are arranged in tandem between a pair of main bus bars spaced apart by a predetermined distance. The connection between the three circuit breakers is such that adjacent circuit breakers are connected by a connecting bus bar to their lead-out parts remoter from each other, and disconnecting switches, etc. are disposed on the connecting bus bars. This arrangement shortens the distance between the adjacent circuit breakers, so that the gas-insulated switchgear can be shortened in the length in the tandem direction of the circuit breakers.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: June 30, 1987
    Assignee: Hitachi, Ltd.
    Inventor: Toshihide Mitomo