Patents by Inventor Akihiko NOBORIO

Akihiko NOBORIO 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).

  • Vane oil pump with different back pressure supplied to vanes
    Patent number: 10724373
    Abstract: A vane oil pump includes a rotor including a plurality of slits, a housing having an inner circumferential cam surface such that a first pump unit and a second pump unit taking in and discharging oil in accordance with rotation of the rotor are separately disposed in a rotational direction of the rotor, a plurality of vanes respectively fitted in the slits of the rotor, and a pressure adjusting device configured to adjust a second discharge pressure of the second pump unit to a lower pressure than a first discharge pressure of the first pump unit. A back pressure groove is disposed on the housing and is provided to supply back pressure oil to a bottom portion of each slit.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 28, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Takafumi Inagaki, Yoshinobu Soga, Shuji Moriyama, Yusuke Ohgata, Yuji Hattori, Kazumichi Tsukuda, Akihiko Noborio
  • VANE OIL PUMP
    Publication number: 20180128107
    Abstract: A vane oil pump includes a rotor including a plurality of slits, a housing having an inner circumferential cam surface such that a first pump unit and a second pump unit taking in and discharging oil in accordance with rotation of the rotor are separately disposed in a rotational direction of the rotor, a plurality of vanes respectively fitted in the slits of the rotor, and a pressure adjusting device configured to adjust a second discharge pressure of the second pump unit to a lower pressure than a first discharge pressure of the first pump unit. A back pressure groove is disposed on the housing and is provided to supply back pressure oil to a bottom portion of each slit.
    Type: Application
    Filed: October 25, 2017
    Publication date: May 10, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Takafumi INAGAKI, Yoshinobu SOGA, Shuji MORIYAMA, Yusuke OHGATA, Yuji HATTORI, Kazumichi TUKUDA, Akihiko NOBORIO