Patents by Inventor Meguru Yamamoto

Meguru Yamamoto 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).

  • Pneumatic-hydraulic system for hydraulic actuator
    Patent number: 4437309
    Abstract: In a pneumatic-hydraulic system for driving a hydraulic actuator, a single pneumatic-hydraulic converter includes a cylinder casing with inlet and outlet ports and a plunger reciprocably disposed within the casing to form a hydraulic chamber in open communication with the inlet and outlet ports and a pneumatic chamber for connection to a pneumatic pressure source, the hydraulic chamber having a displacement capacity filled with a predetermined amount of hydraulic fluid necessary for producing at least one reciprocating motion of the actuator.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: March 20, 1984
    Assignee: Toyooko Kogyo Kabushiki Kaisha
    Inventors: Osamu Suzuki, Kunio Yamaguchi, Meguru Yamamoto