Patents by Inventor Masayoshi OKAMIYA

Masayoshi OKAMIYA 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).

  • Brake control apparatus
    Patent number: 10442413
    Abstract: A parking brake control apparatus 20 drives an electric motor 43B to advance a piston 39 according to an application request signal from a parking brake switch 19. The parking brake control apparatus 20 includes a running state detection portion that calculates a running state about whether a vehicle is running or stopped based on a wheel signal from a wheel speed sensor 18. When the running state cannot be calculated by the running state detection portion, the parking brake control apparatus 20 controls the electric motor 43B in such a manner that the thrust force of the piston 39 changes at a lower time rate of change than when the running state can be calculated.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: October 15, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yuki Tanaka, Wataru Yokoyama, Kimio Nishino, Masayoshi Okamiya, Kenichiro Matsubara
  • BRAKE CONTROL APPARATUS
    Publication number: 20180072285
    Abstract: A parking brake control apparatus 20 drives an electric motor 43B to advance a piston 39 according to an application request signal from a parking brake switch 19. The parking brake control apparatus 20 includes a running state detection portion that calculates a running state about whether a vehicle is running or stopped based on a wheel signal from a wheel speed sensor 18. When the running state cannot be calculated by the running state detection portion, the parking brake control apparatus 20 controls the electric motor 43B in such a manner that the thrust force of the piston 39 changes at a lower time rate of change than when the running state can be calculated.
    Type: Application
    Filed: March 22, 2016
    Publication date: March 15, 2018
    Inventors: Yuki TANAKA, Wataru YOKOYAMA, Kimio NISHINO, Masayoshi OKAMIYA, Kenichiro MATSUBARA