Patents by Inventor Walter E. Merz

Walter E. Merz 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 and method for use in casting articles
    Patent number: 4763716
    Abstract: An improved apparatus and method is used to cast a plurality of articles in a mold structure having a plurality of article molds disposed in an array having an open central portion. The article molds are filled with molten metal while the mold structure is supported on a chill plate. An inner baffle plate is disposed in the central portion of the array of article molds and retards the transfer of heat from the article molds to the chill plate. The inner baffle plate is supported by a support structure which extends through the chill plate. After the article molds have been filled with molten metal, the chill plate and mold structure are lowered relative to the inner baffle plate to increase the rate of heat transfer from the article molds to the chill plate through the open central portion of the array of article molds. Thereafter, the inner baffle plate and support structure are lowered with the chill plate and mold structure.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: August 16, 1988
    Assignee: PCC Airfoils, Inc.
    Inventors: Lawrence D. Graham, Daniel G. Fetsko, Thomas George, Mark A. Crnkovic, William D. James, Walter E. Merz