Patents by Inventor Ishihara Hiroyuki

Ishihara Hiroyuki 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 magnet type rotor and filling of the same
    Patent number: 6826824
    Abstract: A system and method are used to assemble and fill an embedded magnet type rotor. The system and method prevent rotation of the rotor core within a manufacturing device as the rotor core is being filled and the embedded magnets are magnetically orientated. The embedded magnet type rotor is made by a process in which resinous magnet is filled in slits provided in a rotor core. In one embodiment, a recessed portion of the core in a shaft hole is engageable with a projecting portion of a core pin of a metallic mold for use in filling the resinous magnet to prevent rotation of the core. Other positioning devices are also used to prevent rotation.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: December 7, 2004
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Ishihara Hiroyuki, Kazuyoshi Kaneko, Shinya Naito
  • Embedded magnet type rotor and filling method of the same
    Publication number: 20020047409
    Abstract: A system and method are used to assemble and fill an embedded magnet type rotor. The system and method prevent rotation of the rotor core within a manufacturing device as the rotor core is being filled and the embedded magnets are magnetically orientated. The embedded magnet type rotor is made by a process in which resinous magnet is filled in slits provided in a rotor core. In one embodiment, a recessed portion of the core in a shaft hole is engageable with a projecting portion of a core pin of a metallic mold for use in filling the resinous magnet to prevent rotation of the core. Other positioning devices are also used to prevent rotation.
    Type: Application
    Filed: July 27, 2001
    Publication date: April 25, 2002
    Inventors: Ishihara Hiroyuki, Kazuyoshi Kaneko, Shinya Naito