Patents by Inventor Yasunori OTSUKI

Yasunori OTSUKI 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).

  • Method for manufacturing a neutral ring for use in rotating electrical machine
    Patent number: 10658898
    Abstract: A method for manufacturing a neutral ring includes connecting a cut-off neutral ring to an arc-shaped connection element. The method also includes filling an insulator between the cut-off neutral ring and a connection element. The neutral ring shunts the rotor coil in three phases.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: May 19, 2020
    Assignee: Hitachi Industrial Products, Ltd.
    Inventors: Yasushi Hayasaka, Masanori Matsumoto, Yasunori Otsuki, Tetsuo Fujigaki, Yoshihiro Yasui, Motonobu Iizuka, Masaaki Endou, Atsushi Fukunaga, Takeshi Nakayama
  • Rotating electric machine or wind power generation system
    Patent number: 10177621
    Abstract: A rotating electric machine comprises a field winding provided on a rotor iron core and a neutral ring supported independently of the field winding, wherein: the field winding and the neutral ring are electrically connected to each other through a connecting wire; the neutral ring is disposed spaced with respect to the rotor iron core; and the connecting wire absorbs the stress difference between the field winding and the neutral ring when a centrifugal stress is applied.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: January 8, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Naoki Kunihiro, Daisuke Kori, Motonobu Iizuka, Tetsuo Fujigaki, Atsushi Fukunaga, Yasunori Otsuki, Masakatsu Sato, Masanori Matsumoto, Takeshi Nakayama, Masaaki Endo, Yoshihiro Yasui, Yasushi Hayasaka
  • Method for Manufacturing a Neutral Ring for Use in Rotating Electrical Machine
    Publication number: 20180301952
    Abstract: A method for manufacturing a neutral ring includes connecting a cut-off neutral ring to an arc-shaped connection element. The method also includes filling an insulator between the cut-off neutral ring and a connection element. The neutral ring shunts the rotor coil in three phases.
    Type: Application
    Filed: June 19, 2018
    Publication date: October 18, 2018
    Inventors: Yasushi HAYASAKA, Masanori MATSUMOTO, Yasunori OTSUKI, Tetsuo FUJIGAKI, Yoshihiro YASUI, Motonobu IIZUKA, Masaaki ENDOU, Atsushi FUKUNAGA, Takeshi NAKAYAMA
  • Neutral ring for use in rotating electrical machine and method for manufacturing the same
    Patent number: 10033237
    Abstract: A rotating electrical machine includes a rotor core, a rotor shaft, a coil, a bind, a lead-out wire of which one end is connected to the coil and the other end is connected to a neutral ring. A filling is filled between the coil and the neutral ring. The neutral ring is formed with a plurality of members that are connected with one another to have flexibility.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: July 24, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Yasushi Hayasaka, Masanori Matsumoto, Yasunori Otsuki, Tetsuo Fujigaki, Yoshihiro Yasui, Motonobu Iizuka, Masaaki Endou, Atsushi Fukunaga, Takeshi Nakayama
  • Rotating Electric Machine or Wind Power Generation System
    Publication number: 20170117769
    Abstract: A rotating electric machine comprises a field winding provided on a rotor iron core and a neutral ring supported independently of the field winding, wherein: the field winding and the neutral ring are electrically connected to each other through a connecting wire; the neutral ring is disposed spaced with respect to the rotor iron core; and the connecting wire absorbs the stress difference between the field winding and the neutral ring when a centrifugal stress is applied.
    Type: Application
    Filed: August 6, 2014
    Publication date: April 27, 2017
    Inventors: Naoki KUNIHIRO, Daisuke KORI, Motonobu IIZUKA, Tetsuo FUJIGAKI, Atsushi FUKUNAGA, Yasunori OTSUKI, Masakatsu SATO, Masanori MATSUMOTO, Takeshi NAKAYAMA, Masaaki ENDO, Yoshihiro YASUI, Yasushi HAYASAKA
  • Neutral Ring for Use in Rotating Electrical Machine and Method for Manufacturing the Same
    Publication number: 20160043603
    Abstract: A rotating electrical machine includes a rotor core, a rotor shaft, a coil, a bind, a lead-out wire of which one end is connected to the coil and the other end is connected to a neutral ring. A filling is filled between the coil and the neutral ring. The neutral ring is formed with a plurality of members that are connected with one another to have flexibility.
    Type: Application
    Filed: June 30, 2015
    Publication date: February 11, 2016
    Inventors: Yasushi HAYASAKA, Masanori MATSUMOTO, Yasunori OTSUKI, Tetsuo FUJIGAKI, Yoshihiro YASUI, Motonobu IIZUKA, Masaaki ENDOU, Atsushi FUKUNAGA, Takeshi NAKAYAMA