Patents by Inventor David N. Eberle

David N. Eberle 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).

  • Method and apparatus for alloying continuously cast steel products
    Patent number: 4520861
    Abstract: Apparatus and method for alloying continuously cast steel products wherein a wire of alloying material, e.g. lead, is fed through the center of the stopper rod to its nose where the wire melts and dissolves into the stream of liquid steel flowing out of the tundish. The guide passage for the wire and a cooperating hole in the nose of the stopper rod are temporarily closed by heat meltable means which prevents steel from entering and clogging the hole in the passage before a steady-state flow condition is achieved.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: June 4, 1985
    Assignee: Republic Steel Corporation
    Inventors: Robert Sobolewski, David N. Eberle