Patents by Inventor Donald A. Nalley

Donald A. Nalley 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 for gun barrel manufacture using tailored autofrettage mandrels
    Publication number: 20050066801
    Abstract: A method of manufacturing a monobloc gun barrel by calculating an optimal residual stress profile and then applying tailored autofrettage mandrels which are mechanically pressed down the bore of a large caliber barrel, the mandrel size optimized to create a residual stress distribution on the interior of the bore within the design constraints imposed by the worst-case heat flux scenario.
    Type: Application
    Filed: June 15, 2004
    Publication date: March 31, 2005
    Inventors: Michael Hermanson, Brian Bauman, Donald Nalley
  • Method for gun barrel manufacture using tailored autofrettage mandrels
    Patent number: 6810615
    Abstract: A method of manufacturing a monobloc gun barrel by calculating an optimal residual stress profile and then applying tailored autofrettage mandrels which are mechanically pressed down the bore of a large caliber barrel, the mandrel size optimized to create a residual stress distribution on the interior of the bore within the design constraints imposed by the worst-case heat flux scenario.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: November 2, 2004
    Assignee: United Defense, L.P.
    Inventors: Michael J. Hermanson, Brian Bauman, Donald A. Nalley
  • METHOD FOR GUN BARREL MANUFACTURE USING TAILORED AUTOFRETTAGE MANDRELS
    Publication number: 20040148839
    Abstract: A method of manufacturing a monobloc gun barrel by calculating an optimal residual stress profile and then applying tailored autofrettage mandrels which are mechanically pressed down the bore of a large caliber barrel, the mandrel size optimized to create a residual stress distribution on the interior of the bore within the design constraints imposed by the worst-case heat flux scenario.
    Type: Application
    Filed: February 5, 2003
    Publication date: August 5, 2004
    Inventors: Michael J. Hermanson, Brian Bauman, Donald A. Nalley