Patents by Inventor Robert B. Leholm

Robert B. Leholm 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).

  • Warm/hot corrugation machine and method for corrugating low-ductility foils
    Patent number: 6655184
    Abstract: A machine and method for corrugating a metal foil strip utilizes an enclosure defining a chamber and a controllable heat source for heating the chamber. The chamber may optionally include at least one gas that is also heated by the heat source. At least one tool set received in the chamber forms corrugations in the metal foil strip. Foil entry feeder elements supply and guide the metal foil strip from outside the chamber into the chamber and to the tool set. A drive for the tool set is mounted outside the chamber and coupled to the tool set to actuate the tool set. Foil exit delivery elements guide the strip from the tool set and out of the chamber. Where required to prevent oxidation of the foil strip, a source supplying an inert gas to the chamber at a controlled rate is used.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: December 2, 2003
    Assignee: Rohr, Inc.
    Inventors: John E. Meaney, Thomas J. Liebig, Raymond R. Listak, Robert B. Leholm, Jeffrey K. Switzer, Peter H. Ellis, Jack D. Beyer
  • Warm/hot corrugation machine and method for corrugating low-ductility foils
    Publication number: 20030094030
    Abstract: A machine and method for corrugating a metal foil strip utilizes an enclosure defining a chamber and a controllable heat source for heating the chamber. The chamber may optionally include at least one gas that is also heated by the heat source. At least one tool set received in the chamber forms corrugations in the metal foil strip. Foil entry feeder elements supply and guide the metal foil strip from outside the chamber into the chamber and to the tool set. A drive for the tool set is mounted outside the chamber and coupled to the tool set to actuate the tool set. Foil exit delivery elements guide the strip from the tool set and out of the chamber. Where required to prevent oxidation of the foil strip, a source supplying an inert gas to the chamber at a controlled rate is used.
    Type: Application
    Filed: October 4, 2001
    Publication date: May 22, 2003
    Inventors: John E. Meaney, Thomas J. Liebig, Raymond R. Listak, Robert B. Leholm, Jeffrey K. Switzer, Peter H. Ellis, Jack D. Beyer