Patents by Inventor Robert M. Heisman

Robert M. Heisman 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).

  • Heat treat fixture and method of heat treating
    Patent number: 4212690
    Abstract: A heat treating fixture is disclosed in which the shape of the metal specimen is maintained by cold rolled steel support plates. Glide sheets of stainless steel, coated with boron nitride, in contact with each face of the metal specimens, allow for lateral expansion of the metal specimens without binding. Grooved support bars separate the glide sheets from the upper and lower support plates and allow flow of quenching fluid to the metal specimen.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: July 15, 1980
    Inventors: Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch, Charles S. Beuyukian, Robert M. Heisman, Cyrus C. Haynie, Emil P. Ruppe