Patents by Inventor Robert Krummen

Robert Krummen 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 of repairing shroud tip overlap on turbine buckets
    Patent number: 6701616
    Abstract: Shroud covers for buckets of gas turbines sometimes overlap one another. To repair a shroud cover overlap and preclude further overlap during turbine operation, a first weld bead of high hardness material is applied along the radial inside surface of the overlapping cover and adjacent an intermediate edge of the Z-shaped edges of the covers. Additional weld beads of a more ductile material are applied along the same surface behind the initial weld bead to structurally support the high hardness initially applied weld material. By building up weld material along the inside radial face of the overlapping cover adjacent the overlapped edge of the adjoining cover, the thickness of the overlapping cover is increased to preclude shroud cover overlap during further turbine operation.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: March 9, 2004
    Assignee: General Electric Company
    Inventors: Eric Garrard Smith, Robert Krummen, Jeffrey Reid Thyssen
  • METHOD OF REPAIRING SHROUD TIP OVERLAP ON TURBINE BUCKETS
    Publication number: 20040000050
    Abstract: Shroud covers for buckets of gas turbines sometimes overlap one another. To repair a shroud cover overlap and preclude further overlap during turbine operation, a first weld bead of high hardness material is applied along the radial inside surface of the overlapping cover and adjacent an intermediate edge of the Z-shaped edges of the covers. Additional weld beads of a more ductile material are applied along the same surface behind the initial weld bead to structurally support the high hardness initially applied weld material. By building up weld material along the inside radial face of the overlapping cover adjacent the overlapped edge of the adjoining cover, the thickness of the overlapping cover is increased to preclude shroud cover overlap during further turbine operation.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Inventors: Eric Garrard Smith, Robert Krummen, Jeffrey Reid Thyssen