Patents by Inventor Hidemitsu TAKAMOTO

Hidemitsu TAKAMOTO 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).

  • Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same
    Patent number: 11808158
    Abstract: Provided is an electrohydrostatic actuation system including an emergency shut-off circuit to be actuated stably with a simple configuration. The electrohydrostatic actuation system includes: a hydraulic cylinder (24) including a piston (25) to which a valve element is connected, a first chamber (24A), and a second chamber (24B); a hydraulic pump (21) configured to supply hydraulic fluid to the first chamber (24A) or the second chamber (24B); a servo motor (M) configured to drive the hydraulic pump (21); a shuttle valve (11) configured to establish communication to a downstream side under a state in which a hydraulic pressure generated by the hydraulic pump (21) is maintained; a solenoid valve (12) configured to receive the hydraulic pressure via the shuttle valve (11) as a pilot pressure; and a logic valve (13) including a first port configured to receive the pilot pressure from the solenoid valve (12), and a second port to be communicated to the first chamber (24A) of the hydraulic cylinder (24).
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: November 7, 2023
    Assignee: MOOG JAPAN LTD.
    Inventors: Jiong Yang, Hidemitsu Takamoto, Naritoyo Shibata
  • ELECTROHYDROSTATIC ACTUTION SYSTEM, HYDRAULIC CIRCUIT OF ELECTROHYDROSTATIC ACTUTION SYSTEM, AND STEAM TURBINE SYSTEM INCLUDING SAME
    Publication number: 20220145770
    Abstract: Provided is an electrohydrostatic actuation system including an emergency shut-off circuit to be actuated stably with a simple configuration. The electrohydrostatic actuation system includes: a hydraulic cylinder (24) including a piston (25) to which a valve element is connected, a first chamber (24A), and a second chamber (24B); a hydraulic pump (21) configured to supply hydraulic fluid to the first chamber (24A) or the second chamber (24B); a servo motor (M) configured to drive the hydraulic pump (21); a shuttle valve (11) configured to establish communication to a downstream side under a state in which a hydraulic pressure generated by the hydraulic pump (21) is maintained; a solenoid valve (12) configured to receive the hydraulic pressure via the shuttle valve (11) as a pilot pressure; and a logic valve (13) including a first port configured to receive the pilot pressure from the solenoid valve (12), and a second port to be communicated to the first chamber (24A) of the hydraulic cylinder (24).
    Type: Application
    Filed: April 27, 2020
    Publication date: May 12, 2022
    Applicant: MOOG JAPAN LTD.
    Inventors: Jiong YANG, Hidemitsu TAKAMOTO, Naritoyo SHIBATA