Patents by Inventor Charles L. Ruffner

Charles L. Ruffner 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: 4094672
    Abstract: A method and container for hot isostatic compacting of powder metallurgy charges in a sealed container wherein the container may be both easily removed from the charge after compacting and preserved for subsequent reuse; this is achieved by providing a separating medium between the container interior and the powdered metal charge to prevent bonding during hot isostatic compacting, and removing the compacted charge from the container by introducing fluid under pressure to the container interior to expand the same away from the compacted charge and then providing an opening in the container, preferably at the end thereof, through which the compact is withdrawn.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: June 13, 1978
    Assignee: Crucible Inc.
    Inventors: James N. Fleck, Richard C. Palmer, Charles L. Ruffner