Patents by Inventor Steven P. Hahn

Steven P. Hahn 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).

  • Clean atmosphere heat treat for coated turbine components
    Patent number: 7429174
    Abstract: A method for heat treating at least one workpiece, such as a coated turbine engine component, is provided. The method comprises the steps of cleaning a furnace to be used during the heat treating method, which cleaning method comprising injecting a gas at a workpiece center location and applying heat, and diffusion heat treating the at least one workpiece in a gas atmosphere with the gas being injected at the workpiece center location. After the diffusion heat treatment step, the coated workpiece(s) may be subjected to a surface finishing operation such as a peening operation.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: September 30, 2008
    Assignee: United Technologies Corporation
    Inventors: Steven M. Burns, Steven P. Hahn
  • Clean atmosphere heat treat for coated turbine components
    Publication number: 20040261923
    Abstract: A method for heat treating at least one workpiece, such as a coated turbine engine component, is provided. The method comprises the steps of cleaning a furnace to be used during the heat treating method, which cleaning method comprising injecting a gas at a workpiece center location and applying heat, and diffusion heat treating the at least one workpiece in a gas atmosphere with the gas being injected at the workpiece center location. After the diffusion heat treatment step, the coated workpiece(s) may be subjected to a surface finishing operation such as a peening operation.
    Type: Application
    Filed: June 25, 2003
    Publication date: December 30, 2004
    Inventors: Steven M. Burns, Steven P. Hahn