Patents by Inventor Hiroyosi Sakurai

Hiroyosi Sakurai 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).

  • Motor-driven power steering apparatus
    Patent number: 4756375
    Abstract: The present invention provides a controller for a power steering control system with a current limiter for limiting current to be fed to a power steering motor, in accordance with a power source voltage, whereby the power source is prevented from falling into an overdischarge state while a power steering function is performed. An additional feature of the present invention is an idle speed control device for increasing the engine idle speed when the current of the power steering motor reaches a predefined level.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: July 12, 1988
    Assignees: Hitachi, Ltd., Hitachi Automotive Engineering Co., Ltd.
    Inventors: Hisatugu Ishikura, Nobuyoshi Onuma, Shigeki Saito, Hiroyosi Sakurai