Patents by Inventor Rintaro MATSUDA

Rintaro MATSUDA 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).

  • Pump displacement control device having a feedback lever
    Patent number: 11879452
    Abstract: A pump displacement control device includes: a servo piston that changes a tilt angle; a flow rate control spool that is displaced corresponding to an input pressure; a power control spool that is displaced corresponding to a discharge pressure of the pump; a control pressure regulating spool that regulates a control pressure which controls the servo piston; and a feedback lever connected to the servo piston and the control pressure regulating spool. The feedback lever directly abut on either one of the flow rate control spool or the power control spool for regulating the control pressure.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: January 23, 2024
    Assignee: KYB CORPORATION
    Inventors: Tetsuya Iwanaji, Hiroaki Kuboi, Rintaro Matsuda
  • PUMP DISPLACEMENT CONTROL DEVICE
    Publication number: 20220154715
    Abstract: A pump displacement control device includes: a servo piston that changes a tilt angle; a flow rate control spool that is displaced corresponding to an input pressure; a power control spool that is displaced corresponding to a discharge pressure of the pump; a control pressure regulating spool that regulates a control pressure which controls the servo piston; and a feedback lever connected to the servo piston and the control pressure regulating spool. The feedback lever directly abut on either one of the flow rate control spool or the power control spool for regulating the control pressure.
    Type: Application
    Filed: February 13, 2020
    Publication date: May 19, 2022
    Applicant: KYB Corporation
    Inventors: Tetsuya IWANAJI, Hiroaki KUBOI, Rintaro MATSUDA