Patents by Inventor Bhinyo Kamvachirapitag

Bhinyo Kamvachirapitag 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).

  • Automatic floating roof drain valve
    Patent number: 4202366
    Abstract: A drain valve for a floating roof tank, employing a float for controlling the opening and closing of the valve. The buoyancy of the float is adjusted by means of a calibration weight such that the float is buoyant in water and sinks in oil. The inlet into the valve compartment is separated from the float and valve seat compartments by partitions which prevent the valve from prematurely closing because of forces set up by the velocity of fluid flow through the system and also due to the reduction of fluid density because of air bubbles.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: May 13, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventor: Bhinyo Kamvachirapitag