Patents by Inventor Charles Wojciechowski

Charles Wojciechowski 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).

  • Inertia welded shaft and method therefor
    Publication number: 20050001015
    Abstract: A method is provided for assembling a shaft having a metal matrix composite mid shaft and monolithic high strength alloy forward and aft shafts. The forward and aft shafts are each inertia friction welded to separate annular transition pieces which include a barrier layer operative to prevent the formation of intermetallic compounds. Special tooling is used to avoid applying shear stresses to the transition piece during welding. The welded forward and aft subassemblies are subsequently heat treated before inertia friction welding them to the mid shaft.
    Type: Application
    Filed: March 18, 2004
    Publication date: January 6, 2005
    Inventors: Charles Carrier, Gary Holloway, Charles Wojciechowski