Patents by Inventor Mark J. Rudowicz

Mark J. Rudowicz 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 of repairing ingot mold bottoms
    Patent number: 3971117
    Abstract: A method for repairing eroded bottoms of ingot molds by forming a casting space in the bottom of the mold at the point of erosion, the casting space having an hour-glass type shape, placing the ingot mold on a molding platform so as to close off the bottom of the casting space with a refractory material, placing a protective layer of a compactable refractory material about the interior of the mold and introducing to the casting space an alumino-thermic material and then igniting said alumino-thermic material such that the weld metal from the reaction thereof completely fills the casting space. Methods for repairing the bottoms of closed bottom as well as plug bottom molds are disclosed.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: July 27, 1976
    Assignee: Hilti Aktiengesellschaft
    Inventors: Richard E. Osterhout, Walter A. McCray, Mark J. Rudowicz