Patents by Inventor Yuuko KAJIYAMA

Yuuko KAJIYAMA 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: 8411418
    Abstract: The vacuum insulated switchgear includes: a housing enclosing a control compartment, a switch compartment, and a busbar compartment, each of the three compartments being partitioned by a metallic earthing plate; a first busbar and second busbar extended from an adjacent panel, in the busbar compartment; and a first busbar-connecting bushing and second busbar-connecting bushing making the first and second busbars connectible/disconnectible; a double-breaking three position vacuum switch, two sets of earthing switches, the first busbar-connecting bushing, and the second busbar-connecting bushing being integrally molded to form a switch provided on an electrical phase-by phase basis independently, wherein the switches for three phases are arranged in order side by side in the housing.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: April 2, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Shuichi Kikukawa, Kenji Tsuchiya, Yuuko Kajiyama, Daisuke Sugai
  • Publication number: 20110058311
    Abstract: The vacuum insulated switchgear includes a housing enclosing a control compartment, a switch compartment, and a busbar compartment, each of the three compartments being partitioned by a metallic earthing plate; a first busbar and second busbar extended from an adjacent panel, in the busbar compartment; and a first busbar-connecting bushing and second busbar-connecting bushing making the first and second busbars connectible/disconnectible; a double-breaking three position vacuum switch, two sets of earthing switches, the first busbar-connecting bushing, and the second busbar-connecting bushing being integrally molded to form a switch provided on an electrical phase-by phase basis independently, wherein the switches for three phases are arranged in order side by side in the housing.
    Type: Application
    Filed: August 10, 2010
    Publication date: March 10, 2011
    Applicant: HITACHI, LTD.
    Inventors: Shuichi KIKUKAWA, Kenji TSUCHIYA, Yuuko KAJIYAMA, Daisuke SUGAI