Patents by Inventor Robert J. Kraf

Robert J. Kraf 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).

  • Turbomachinery debris remover
    Patent number: 4792276
    Abstract: An apparatus for removing debris from a turbomachine. The apparatus includes housing and remotely operable viewing and grappling mechanisms for the purpose of locating and removing debris lodged between adjacent blades in a turbomachine.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: December 20, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Donald F. Krawiec, Robert J. Kraf, Robert J. Houser