Patents by Inventor Herbert M. Gersch

Herbert M. Gersch 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).

  • Mold and method for casting of fragile and complex shapes
    Patent number: 4556528
    Abstract: A method and apparatus for casting of fragile complex shapes by the formation of a two layer wax mold about a pattern of the shape to be cast. Thereafter, the pattern is removed from the mold and the outer layer of wax dissolved. The slip is then poured into the mold and allowed to solidify before the inner layer of the mold is completely removed from the cast article.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: December 3, 1985
    Assignee: The Garrett Corporation
    Inventors: Herbert M. Gersch, Glenn W. Brown