Patents by Inventor Shinji Kikawa

Shinji Kikawa 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 and method for connecting stator conductors
    Patent number: 6700282
    Abstract: A rotary electric machine having improved coil connection reliability, simplified coil end processing steps and improved workability based on an improved components mounting method is to be provided. Flat type conductors are inserted in a stacked state into each of slots formed in a stator core, and a side face of a preceding-stage winding terminal end and a side face of a succeeding-stage winding start end in the flat type conductors are lapped and connected to constitute an assembly of stator coils. The stator coil assembly comprises plural coil groups, and one electrode is connected to one conductor end in the coil groups, while another electrode is moved in a successive manner to connect preceding- and succeeding-stage winding terminal and start ends of the conductors. Further, an insulating ring with crossover conductors laid thereon is combined with such stator coil assembly to connect winding terminal and start ends of the stator coil assembly, thereby constituting a predetermined winding circuit.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: March 2, 2004
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Yoshimi Mori, Takashi Yasuhara, Osamu Koizumi, Masaaki Hayashi, Shinji Kikawa
  • Rotary electric machine and method for connecting stator conductors
    Publication number: 20030127935
    Abstract: A rotary electric machine having improved coil connection reliability, simplified coil end processing steps and improved workability based on an improved components mounting method is to be provided. Flat type conductors are inserted in a stacked state into each of slots formed in a stator core, and a side face of a preceding-stage winding terminal end and a side face of a succeeding-stage winding start end in the flat type conductors are lapped and connected to constitute an assembly of stator coils. The stator coil assembly comprises plural coil groups, and one electrode is connected to one conductor end in the coil groups, while another electrode is moved in a successive manner to connect preceding- and succeeding-stage winding terminal and start ends of the conductors. Further, an insulating ring with crossover conductors laid thereon is combined with such stator coil assembly to connect winding terminal and start ends of the stator coil assembly, thereby constituting a predetermined winding circuit.
    Type: Application
    Filed: October 30, 2002
    Publication date: July 10, 2003
    Applicant: HITACHI, LTD
    Inventors: Yoshimi Mori, Takashi Yasuhara, Osamu Koizumi, Masaaki Hayashi, Shinji Kikawa