Patents by Inventor Hirohisa YUKAWA

Hirohisa YUKAWA 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).

  • Power transmission device
    Patent number: 11859714
    Abstract: A power transmission device includes a power transmission mechanism, an oil pump, a first electric wire, a controller and a control unit. The power transmission mechanism is arranged in a first chamber. The oil pump is arranged in a second chamber. The control unit is connected with the controller via the first electric wire. The first electric wire is provided inside the second chamber, and is arranged at a position that does not overlap with the oil pump when viewed along a first direction that is a direction facing from the oil pump to the controller.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: January 2, 2024
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Hirohisa Yukawa, Katsunori Yamashita, Hideyuki Mamiya
  • POWER TRANSMISSION DEVICE
    Publication number: 20220349469
    Abstract: A power transmission device includes a power transmission mechanism, an oil pump, a first electric wire, a controller and a control unit. The power transmission mechanism is arranged in a first chamber. The oil pump is arranged in a second chamber. The control unit is connected with the controller via the first electric wire. The first electric wire is provided inside the second chamber, and is arranged at a position that does not overlap with the oil pump when viewed along a first direction that is a direction facing from the oil pump to the controller.
    Type: Application
    Filed: July 21, 2020
    Publication date: November 3, 2022
    Inventors: Hirohisa YUKAWA, Katsunori YAMASHITA, Hideyuki MAMIYA
  • Continuously variable transmission
    Patent number: 11441667
    Abstract: A continuously variable transmission includes a variator having a belt wound around a pair of pulleys, and a case forming a container chamber for the variator. The pulleys include fixed pulleys and movable pulleys. The belt includes elements stacked to be arranged in an annular form, and rings binding the element stacked. A circumference wall portion of the case is provided with a monitoring hole enabling flank faces of the elements to be monitored.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: September 13, 2022
    Assignee: JATCO LTD
    Inventors: Kazuyoshi Kobayashi, Masao Arimatsu, Masayuki Furuya, Kenichi Yamamoto, Shogo Fujii, Masakazu Tamura, Kazuya Numata, Hirohisa Yukawa
  • CONTROL UNIT
    Publication number: 20220248529
    Abstract: The control unit includes a wiring board on which a connector is disposed. The connector is disposed on a back surface of the wiring board, the back surface being a back surface on a back side of a facing surface facing a body of the control unit. The wiring board includes legs protruding from the back surface on the back side of the facing surface facing the body.
    Type: Application
    Filed: June 2, 2020
    Publication date: August 4, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yusuke SATO, Hideyuki MAMIYA, Katsunori YAMASHITA, Hirohisa YUKAWA, Akira SUWABAYASHI
  • CONTINUOUSLY VARIABLE TRANSMISSION
    Publication number: 20200347924
    Abstract: A continuously variable transmission includes a variator having a belt wound around a pair of pulleys, and a case forming a container chamber for the variator. The pulleys include fixed pulleys and movable pulleys. The belt includes elements stacked to be arranged in an annular form, and rings binding the element stacked. A circumference wall portion of the case is provided with a monitoring hole enabling flank faces of the elements to be monitored.
    Type: Application
    Filed: December 6, 2018
    Publication date: November 5, 2020
    Applicant: JATCO Ltd
    Inventors: Kazuyoshi KOBAYASHI, Masao ARIMATSU, Masayuki FURUYA, Kenichi YAMAMOTO, Shogo FUJII, Masakazu TAMURA, Kazuya NUMATA, Hirohisa YUKAWA