Patents by Inventor Atsushi Goga

Atsushi Goga 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).

  • Oval shaped valve with balancing pilot piston
    Patent number: 4141534
    Abstract: A valve is disclosed wherein a valve member is disposed in the chamber of a valve body in such a way that the valve member is axially displaceable so as to open or close the valve, and a pilot cylinder is provided in order to encounter the unbalanced force acting on the valve member due to the difference in pressure between the primary and secondary sides of the valve. When the valve is wide opened, the liquid flows at the same speed, and the pressure loss is reduced to such an extent as almost equal to the pressure loss of a gate valve in wide opened position.
    Type: Grant
    Filed: July 23, 1976
    Date of Patent: February 27, 1979
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Atsushi Goga, Takefumi Ikui, Mikio Obi, Shinya Kameda