Patents by Inventor Yoshiki Moriyama

Yoshiki Moriyama 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).

  • Electrically operated fluid control device
    Patent number: 4293002
    Abstract: An electrically operated fluid control device for controlling fluid flow under high pressure to be supplied into a fluid actuator, the control device comprising a fluid control valve assembly having a main spool to control fluid flow supplied to the fluid actuator, and an electrically operated pilot valve assembly coaxially incorporated with the control valve assembly to operate the main spool in response to an electric signal.
    Type: Grant
    Filed: December 4, 1979
    Date of Patent: October 6, 1981
    Assignee: Toyooki Kogyo Kabushiki Kaisha
    Inventors: Yoshiki Moriyama, Masayuki Kuwana