Patents by Inventor Youichirou YAMADA

Youichirou YAMADA 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).

  • Stationary induction electrical apparatus
    Patent number: 10658106
    Abstract: To provide a safe stationary induction electrical apparatus that prevents a fragment coming off a magnetic shield, wound around an iron core leg portion of the stationary induction electrical apparatus, due to vibrations from being released in a tank accommodating the stationary induction electrical apparatus and thus prevents a trouble such as dielectric breakdown. Moreover, to provide a stationary induction electrical apparatus that does not need to be changed in the dimensions of an iron core for securing an insulation distance due to the placement of a magnetic shield and can reduce a compressive force generated in a winding. A magnetic material is provided in the interiors of insulating members whose interiors are hollow and which are provided in the vicinities of upper and lower ends of the winding wound around the iron core leg portion of the stationary induction electrical apparatus.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: May 19, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Youichirou Yamada, Akira Nishimizu, Yoshio Hamadate, Akira Yamagishi
  • STATIONARY INDUCTION ELECTRICAL APPARATUS
    Publication number: 20180068785
    Abstract: To provide a safe stationary induction electrical apparatus that prevents a fragment coming off a magnetic shield, wound around an iron core leg portion of the stationary induction electrical apparatus, due to vibrations from being released in a tank accommodating the stationary induction electrical apparatus and thus prevents a trouble such as dielectric breakdown. Moreover, to provide a stationary induction electrical apparatus that does not need to be changed in the dimensions of an iron core for securing an insulation distance due to the placement of a magnetic shield and can reduce a compressive force generated in a winding. A magnetic material is provided in the interiors of insulating members whose interiors are hollow and which are provided in the vicinities of upper and lower ends of the winding wound around the iron core leg portion of the stationary induction electrical apparatus.
    Type: Application
    Filed: August 22, 2017
    Publication date: March 8, 2018
    Applicant: HITACHI, LTD.
    Inventors: Youichirou YAMADA, Akira NISHIMIZU, Yoshio HAMADATE, Akira YAMAGISHI