Patents by Inventor Robert E. Hershey

Robert E. Hershey 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).

  • Apparatus for degassing molten metal
    Patent number: 4494735
    Abstract: A gas injection nozzle design for use in a swirling tank reactor used in the degassing of molten metal with a fluxing gas. The nozzle design eliminates metal leakage from the reactor around the nozzle tip and gas leakage within the fluxing gas delivery line. The nozzle tip is provided with an orifice profile consisting of a straight hole opening of constant diameter or consisting of a converging-diverging profile.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: January 22, 1985
    Assignee: Swiss Aluminium Ltd.
    Inventor: Robert E. Hershey