Patents by Inventor Masahiro Izuhara

Masahiro Izuhara 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).

  • Vehicle drive device
    Patent number: 9447864
    Abstract: A vehicle drive device having a rotating electrical machine, a speed change mechanism, and a case that accommodates the rotating electrical machine speed change mechanism. A first oil storage portion is provided so as to communicate with the speed change mechanism accommodating space. A hydraulic pump that supplies the oil in the first oil storage portion to the speed change mechanism and the rotating electrical machine. A second oil storage portion provided so as to communicate with the rotating electrical machine accommodating space. A discharge oil passage discharges the oil in the second oil storage portion to the first oil storage portion. The discharge oil passage includes a first opening that opens toward the first oil storage portion, and the first opening is provided so that its lower end is located above an oil level in the first oil storage portion during rotation of the hydraulic pump.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: September 20, 2016
    Assignees: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mikio Iwase, Daiki Suyama, Naoya Jinnai, Tatsuya Okishima, Masahiro Izuhara, Kensuke Wada, Yukihiko Ideshio, Yuji Inoue
  • VEHICLE DRIVE DEVICE
    Publication number: 20140231174
    Abstract: A vehicle drive device having a rotating electrical machine, a speed change mechanism, and a case that accommodates the rotating electrical machine speed change mechanism. A first oil storage portion is provided so as to communicate with the speed change mechanism accommodating space. A hydraulic pump that supplies the oil in the first oil storage portion to the speed change mechanism and the rotating electrical machine. A second oil storage portion provided so as to communicate with the rotating electrical machine accommodating space. A discharge oil passage discharges the oil in the second oil storage portion to the first oil storage portion. The discharge oil passage includes a first opening that opens toward the first oil storage portion, and the first opening is provided so that its lower end is located above an oil level in the first oil storage portion during rotation of the hydraulic pump.
    Type: Application
    Filed: October 30, 2012
    Publication date: August 21, 2014
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Mikio Iwase, Daiki Suyama, Naoya Jinnai, Tatsuya Okishima, Masahiro Izuhara, Kensuke Wada, Yukihiko Ideshio, Yuji Inoue