Patents by Inventor Lang D. Huynh

Lang D. Huynh 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).

  • Interactive laser welding at elevated temperatures of superalloy articles
    Patent number: 5554837
    Abstract: A process and apparatus is provided for laser welding a nickel and/or cobalt based superalloy article comprising: preheating the entire weld area and adjacent region to a ductile temperature with an induction heat coil and maintaining such temperature during welding and solidification of the weld; and welding the preheated article utilizing a laser with a powder alloy feed with a control means controlling the laser, power feed and motion system on which the article is fixtured, wherein the control means includes a vision system which digitizes the weld area providing a path for the laser welding to follow.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: September 10, 1996
    Assignee: Chromalloy Gas Turbine Corporation
    Inventors: Frank Goodwater, Lang D. Huynh, David S. Kang, Hon Li, James M. Lizotte, Brian G. Doyle
  • Gas turbine engine vane assembly repair apparatus
    Patent number: 5490322
    Abstract: An apparatus is provided for separating components of a brazed vane assembly by preheating the assembly to a temperature below the solidus of the base metal of the vane assembly and above the liquidus of the braze, then maintaining such temperature while separating the airfoil from the platform by pulling/pushing the airfoil and platform apart.
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: February 13, 1996
    Assignee: Chromalloy Gas Turbine Corporation
    Inventors: Frank J. Goodwater, Lang D. Huynh, David S. Kang
  • Gas turbine engine vane assembly repair
    Patent number: 5444911
    Abstract: A process and apparatus are provided for separating components of a brazed vane assembly by preheating the assembly to a temperature below the solidus of the base metal of the vane assembly and above the liquidus of the braze, then maintaining such temperature while separating the airfoil from the platform by pulling/pushing the airfoil and platform apart.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: August 29, 1995
    Assignee: Chromalloy Gas Turbine Corporation
    Inventors: Frank J. Goodwater, Lang D. Huynh, David S. Kang