Patents by Inventor Takashi NADA

Takashi NADA 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).

  • Rotary electric machine
    Patent number: 10615659
    Abstract: A stator coil accommodated in a slot of a rotary electric machine includes a coil conductor, a main insulating layer, a low resistance corona shield layer, and a stator coil extending outside the slot is provided with a first stator coil at the end of the low resistance corona shield layer has a first nonlinear resistance layer and a second nonlinear resistance layer partially overlapping with an end of the first nonlinear resistance layer, and a lower limit value of an electric resistivity of the second nonlinear resistance layer in a predetermined electric field is larger than an upper limit value of an electric resistivity of the first nonlinear resistance layer by one order of magnitude or more.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: April 7, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takahiro Umemoto, Yasutomo Otake, Manabu Yoshimura, Takashi Nada, Makoto Tsukiji
  • ROTARY ELECTRIC MACHINE
    Publication number: 20190109507
    Abstract: A stator coil accommodated in a slot of a rotary electric machine includes a coil conductor, a main insulating layer, a low resistance corona shield layer, and a stator coil extending outside the slot is provided with a first stator coil at the end of the low resistance corona shield layer has a first nonlinear resistance layer and a second nonlinear resistance layer partially overlapping with an end of the first nonlinear resistance layer, and a lower limit value of an electric resistivity of the second nonlinear resistance layer in a predetermined electric field is larger than an upper limit value of an electric resistivity of the first nonlinear resistance layer by one order of magnitude or more.
    Type: Application
    Filed: November 24, 2016
    Publication date: April 11, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takahiro UMEMOTO, Yasutomo OTAKE, Manabu YOSHIMURA, Takashi NADA, Makoto TSUKIJI