Patents Assigned to Sulzer Hickham Industries, Inc.
  • Process for restoring a turbine blade
    Patent number: 7648341
    Abstract: The restoring process machines out a crack in the platform of a turbine blade to form a pocket that then receives a plug of compatible material. The plug is brazed in place and the blade is the machined and cleaned to present a clean fresh surface where the plug is inserted. The plug has a lower coefficient of thermal expansion so that the plug area has less compressive stresses in the repaired area.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: January 19, 2010
    Assignee: Sulzer Hickham Industries, Inc.
    Inventor: Matthew Charles Lau