Patents by Inventor Walter S. Lutz, Jr.

Walter S. Lutz, Jr. 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).

  • Patent number: 5205969
    Abstract: A process for distributing wax or a similar substance in semi-solid form which uses a liquid wax supply system, a wax conditioning system including a heat exchanger which cools the wax to a semi-solid state and an accumulator for storing conditioned wax until needed, and a die press or similar work station which receives semi-solid wax from the accumulator in a continuous stream or flow. Such a system allows a lost wax die press to operate without need to manually open and reload the press with wax. An automated control system according to the invention allows die press reloading to occur automatically when needed, and operates the wax conditioning system as needed to maintain a supply of wax in the accumulator. Wax tunnelling problems are avoided by means of a piston disposed in the heat exchanger which is movably interposed between hot liquid wax entering the heat exchanger and cooler, semi-solid wax leaving the heat exchanger.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: April 27, 1993
    Assignee: Signicast Corporation
    Inventors: John A. Nett, Jr., Walter C. Schmitt, Jr., Walter S. Lutz, Jr., James A. Capadona