Patents by Inventor Ikuro Morita

Ikuro Morita 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).

  • Embedded permanent magnet type induction motor which allows coil embedding work to be easily performed
    Patent number: 6727624
    Abstract: An embedded permanent magnet type induction motor has a rotor that is a lamination of a plurality of rotor core plates (10). The rotor core plate is provided with a plurality of rotor slots (12) each inclined by an angle &agr; with respect to a radial direction of the rotor core plate. The rotor has the axial length L being made of laminations divided into at least two equal portions with respect to its central axis. The divided laminations are combined with one another so that one of the divided laminations is opposed to another in inclination of the angle &agr; and the plurality of rotor slots of one of the divided laminations are respectively superposed on the rotor slots of another at at least their ends closer to the central axis of the rotor to form a skew angle &bgr;.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: April 27, 2004
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Ikuro Morita, Hiroyuki Ikeda, Hidetoshi Hayashi
  • Embedded permanent magnet type induction motor which allows coil embedding work to be easily performed
    Publication number: 20030011266
    Abstract: An embedded permanent magnet type induction motor has a rotor that is a lamination of a plurality of rotor core plates (10). The rotor core plate is provided with a plurality of rotor slots (12) each inclined by an angle &agr; with respect to a radial direction of the rotor core plate. The rotor has the axial length L being made of laminations divided into at least two equal portions with respect to its central axis. The divided laminations are combined with one another so that one of the divided laminations is opposed to another in inclination of the angle &agr; and the plurality of rotor slots of one of the divided laminations are respectively superposed on the rotor slots of another at at least their ends closer to the central axis of the rotor to form a skew angle &bgr;.
    Type: Application
    Filed: June 21, 2002
    Publication date: January 16, 2003
    Inventors: Ikuro Morita, Hiroyuki Ikeda, Hidetoshi Hayashi