Patents by Inventor Kouei Yaegashi

Kouei Yaegashi 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).

  • Reinforced permanent magnet rotor with cast zinc
    Patent number: 4564777
    Abstract: A novel rotor construction is disclosed, in which plural permanent magnets are arranged on the outer periphery of a rotor core, which are protected with a cover, and in which a member is placed at an axial end of the rotor core cast with end rings with a balance weight on the outside thereof. The protective cover protects the outer peripheries of the end rings and dampens the centrifugal force of the balance weight. Projections provided on the outer periphery of the member are located at the center of the permanent magnets to reduce the leakage magnetic fluxes between the permanent magnets.
    Type: Grant
    Filed: April 24, 1984
    Date of Patent: January 14, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Masaharu Senoo, Keizi Noma, Akira Saruta, Masanori Yoshizaki, Koichi Teshirogi, Kouei Yaegashi