Patents by Inventor Ryoji Hakataya

Ryoji Hakataya 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).

  • Movable-blade operation system for hydraulic machine
    Patent number: 10968882
    Abstract: A movable-blade operation system for a hydraulic machine according to an embodiment includes an oil hydraulic cylinder installed within a rotational shaft, a bidirectional pump, a pump drive motor, a control unit, and an oil head installed in the hydraulic machine. The bidirectional pump selectively feeds pressurized hydraulic oil to one of a first cylinder chamber and a second cylinder chamber. The oil head couples the rotational shaft rotatably, and the hydraulic oil fed from the bidirectional pump to the first cylinder chamber and the second cylinder chamber flows through the oil head. The bidirectional pump, the pump drive motor, and the control unit are installed outside the hydraulic machine.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: April 6, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Junji Mori, Masahiko Nakazono, Ryoji Hakataya, Kouya Inada, Kenichi Imamura
  • MOVABLE-BLADE OPERATION SYSTEM FOR HYDRAULIC MACHINE
    Publication number: 20180274515
    Abstract: A movable-blade operation system for a hydraulic machine according to an embodiment includes an oil hydraulic cylinder installed within a rotational shaft, a bidirectional pump, a pump drive motor, a control unit, and an oil head installed in the hydraulic machine. The bidirectional pump selectively feeds pressurized hydraulic oil to one of a first cylinder chamber and a second cylinder chamber. The oil head couples the rotational shaft rotatably, and the hydraulic oil fed from the bidirectional pump to the first cylinder chamber and the second cylinder chamber flows through the oil head. The bidirectional pump, the pump drive motor, and the control unit are installed outside the hydraulic machine.
    Type: Application
    Filed: February 22, 2018
    Publication date: September 27, 2018
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION.
    Inventors: Junji MORI, Masahiko Nakazono, Ryoji Hakataya, Kouya Inada, Kenichi Imamura