Patents by Inventor Mitsuhiro Maesaki

Mitsuhiro Maesaki 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).

  • Fluid pressure control device
    Patent number: 9683587
    Abstract: A fluid pressure control device includes a first control valve that switches to supply a working fluid to the pressure chamber of a cylinder on which a load pressure by the load acts so as to control the extension operation of the cylinder, a second control valve that switches to discharge the working fluid in the pressure chamber so as to control the contraction operation of the cylinder, an operate check valve that is interposed between the pressure chamber and the second control valve and that interrupts the discharge of the working fluid from the pressure chamber when the operate check valve is switched to a closed state and a pilot valve that performs, with a pilot pressure, a pilot operation on the second control valve and that switches, with the pilot pressure, the operate check valve to an opened state.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: June 20, 2017
    Assignee: KYB Corporation
    Inventors: Tatsuo Ito, Mitsuhiro Maesaki
  • FLUID PRESSURE CONTROL DEVICE
    Publication number: 20150013322
    Abstract: A fluid pressure control device includes a first control valve that switches to supply a working fluid to the pressure chamber of a cylinder on which a load pressure by the load acts so as to control the extension operation of the cylinder, a second control valve that switches to discharge the working fluid in the pressure chamber so as to control the contraction operation of the cylinder, an operate check valve that is interposed between the pressure chamber and the second control valve and that interrupts the discharge of the working fluid from the pressure chamber when the operate check valve is switched to a closed state and a pilot valve that performs, with a pilot pressure, a pilot operation on the second control valve and that switches, with the pilot pressure, the operate check valve to an opened state.
    Type: Application
    Filed: January 18, 2013
    Publication date: January 15, 2015
    Inventors: Tatsuo Ito, Mitsuhiro Maesaki