Patents by Inventor James T. Yen

James T. Yen 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).

  • Tornado-type wind turbine
    Patent number: 4070131
    Abstract: Atmospheric wind is admitted tangentially into a vertically extending structure and directed against the interior curved surface of the structure to produce vortex flow. The structure is open ended and spaced from ground or connected to a ram-air subterranean tunnel. The vortex flow and corresponding low pressure core draws ambient and/or ram air into the bottom of the structure to drive a horizontal turbine.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: January 24, 1978
    Assignee: Grumman Aerospace Corporation
    Inventor: James T. Yen