Patents by Inventor Takashi Hirakushi

Takashi Hirakushi 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).

  • Segment coil, stator including segment coil, and method of manufacturing segment coil
    Patent number: 9755469
    Abstract: Segment coils arranged as aligned in slot portions of an annular core each include a straight portion and a pair of coil end portions, and have a tip end of the coil end portion of the pair of coil end portions as a tip end portion for joint including a joint surface for joint to another segment coil. The tip end portion for joint has the joint surface in parallel to a radial direction of the annular core when viewed in an axial direction of the annular core.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: September 5, 2017
    Assignees: Toyota Jidosha Kabushiki Kaisha, Sumitomo Electric Industries, Ltd.
    Inventors: Naoto Koshino, Shinichi Iizuka, Hironobu Saka, Takeshi Ariyoshi, Takashi Hirakushi
  • Segment coil, method of manufacturing segment coil, and stator including segment coil
    Patent number: 9293957
    Abstract: Each of segment coils arranged as aligned in a slot of a stator core includes a coil central portion accommodated in the slot and two coil end portions protruding outward. The coil end portion of the two coil end portions includes a pair of coil pieces formed by inclining a coil at different angles toward the coil central portion with a vertex lying therebetween. Any one of the pair of coil pieces includes in a region in the vicinity of the vertex, a recessed step portion formed from two sides in non-parallel to and at an angle with respect to an end surface of the stator core.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: March 22, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiji Takizawa, Naoto Koshino, Shinichi Iizuka, Hironobu Saka, Takeshi Ariyoshi, Takashi Hirakushi
  • SEGMENT COIL, METHOD OF MANUFACTURING SEGMENT COIL, AND STATOR INCLUDING SEGMENT COIL
    Publication number: 20140300236
    Abstract: Each of segment coils arranged as aligned in a slot of a stator core includes a coil central portion accommodated in the slot and two coil end portions protruding outward. The coil end portion of the two coil end portions includes a pair of coil pieces formed by inclining a coil at different angles toward the coil central portion with a vertex lying therebetween. Any one of the pair of coil pieces includes in a region in the vicinity of the vertex, a recessed step portion formed from two sides in non-parallel to and at an angle with respect to an end surface of the stator core.
    Type: Application
    Filed: October 22, 2012
    Publication date: October 9, 2014
    Inventors: Keiji Takizawa, Naoto Koshino, Shinichi Iizuka, Hironobu Saka, Takeshi Ariyoshi, Takashi Hirakushi
  • SEGMENT COIL, STATOR INCLUDING SEGMENT COIL, AND METHOD OF MANUFACTURING SEGMENT COIL
    Publication number: 20140265711
    Abstract: Segment coils arranged as aligned in slot portions of an annular core each include a straight portion and a pair of coil end portions, and have a tip end of the coil end portion of the pair of coil end portions as a tip end portion for joint including a joint surface for joint to another segment coil. The tip end portion for joint has the joint surface in parallel to a radial direction of the annular core when viewed in an axial direction of the annular core.
    Type: Application
    Filed: October 22, 2012
    Publication date: September 18, 2014
    Inventors: Naoto Koshino, Shinichi Iizuka, Hironobu Saka, Takeshi Ariyoshi, Takashi Hirakushi