Patents by Inventor Yasuhiro TOMAGOU

Yasuhiro TOMAGOU 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).

  • Hydraulic power steering system
    Patent number: 9038763
    Abstract: A hydraulic power steering system includes: a hydraulic cylinder in which an interior is partitioned into first and second hydraulic chambers by a piston on a steered shaft; a variable displacement electric pump that supplies hydraulic fluid to the hydraulic cylinder; a selector valve selectively set in a mode in which the hydraulic fluid is supplied to the first hydraulic chamber and drained from the second hydraulic chamber or in a mode in which the hydraulic fluid is supplied to the second hydraulic chamber and drained from the first hydraulic chamber; a detector that detects torque, steering angle, and/or vehicle speed; and a controller.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: May 26, 2015
    Assignee: JTEKT CORPORATION
    Inventors: Ryouichi Kubo, Yasuhiro Tomagou, Akihiko Shiina, Masahiko Sakamaki, Tetsuya Ozaki
  • Hydraulic power steering apparatus
    Patent number: 8584791
    Abstract: A hydraulic power steering apparatus assists in steering of a vehicle with a hydraulic cylinder. The hydraulic power steering apparatus includes a flow control valve, a steering torque sensor, a steering angle sensor, a vehicle speed sensor, and an ECU. The flow control valve changes the supply/drainage amount of hydraulic fluid for the hydraulic cylinder. The ECU sets a supply/drainage mode for supplying/draining the hydraulic fluid with respect to the hydraulic cylinder based on detection results from the aforementioned sensors and controls the flow control valve in accordance with the supply/drainage mode of the hydraulic fluid.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: November 19, 2013
    Assignee: JTEKT Corporation
    Inventors: Masahiko Sakamaki, Yasuhiro Tomagou, Akihiko Shiina, Tetsuya Ozaki, Ryouichi Kubo
  • HYDRAULIC POWER STEERING SYSTEM
    Publication number: 20120097472
    Abstract: A hydraulic power steering system includes: a hydraulic cylinder in which an interior is partitioned into first and second hydraulic chambers by a piston on a steered shaft; a variable displacement electric pump that supplies hydraulic fluid to the hydraulic cylinder; a selector valve selectively set in a mode in which the hydraulic fluid is supplied to the first hydraulic chamber and drained from the second hydraulic chamber or in a mode in which the hydraulic fluid is supplied to the second hydraulic chamber and drained from the first hydraulic chamber; a detector that detects torque, steering angle, and/or vehicle speed; and a controller.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 26, 2012
    Applicant: JTEKT CORPORATION
    Inventors: Ryouichi KUBO, Yasuhiro TOMAGOU, Akihiko SHIINA, Masahiko SAKAMAKI, Tetsuya OZAKI
  • HYDRAULIC POWER STEERING APPARATUS
    Publication number: 20120097471
    Abstract: A hydraulic power steering apparatus assists in steering of a vehicle with a hydraulic cylinder. The hydraulic power steering apparatus includes a flow control valve, a steering torque sensor, a steering angle sensor, a vehicle speed sensor, and an ECU. The flow control valve changes the supply/drainage amount of hydraulic fluid for the hydraulic cylinder. The ECU sets a supply/drainage mode for supplying/draining the hydraulic fluid with respect to the hydraulic cylinder based on detection results from the aforementioned sensors and controls the flow control valve in accordance with the supply/drainage mode of the hydraulic fluid.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 26, 2012
    Applicant: JTEKT CORPORATION
    Inventors: Masahiko SAKAMAKI, Yasuhiro TOMAGOU, Akihiko SHIINA, Tetsuya OZAKI, Ryouichi KUBO