Patents by Inventor Keith E. Seconde

Keith E. Seconde 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).

  • Apparatus and methods for modifying a turbine diaphragm for use with a reduced rotor LAN diameter
    Patent number: 5601403
    Abstract: The diaphragm modification includes providing ring segments having radial outward projecting tenons for reception in dovetail grooves of the diaphragm bore. Seal strips extend about the outer face of the segment rings for engaging the diaphragm bore and crush pins are disposed around the sides of the tenons to provide close tolerance fit between the dovetail hooks of the diaphragm, thus accommodating any out-of-roundness or eccentricity of the diaphragm extant through prior use. Bolts are applied in tapped openings of the segment rings and diaphragm to facilitate securement of the segment rings and diaphragm and the segments 34 are seal-welded to the diaphragm. New packing ring segments are provided in the dovetail grooves along the radial inner face of the segment rings to complete the stage sealing between the diaphragm and reduced diameter rotor.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Assignee: General Electric Co.
    Inventors: Shawn W. Galbraith, William V. Coll, Dennis R. Ahl, Keith E. Seconde
  • Method for modifying a turbine diaphragm for use with a reduced rotor lan diameter
    Patent number: 5524340
    Abstract: The diaphragm modification includes providing ring segments having radial outward projecting tenons for reception in dovetail grooves of the diaphragm bore. Seal strips extend about the outer face of the segment rings for engaging the diaphragm bore and crush pins are disposed around the sides of the tenons to provide close tolerance fit between the dovetail hooks of the diaphragm, thus accommodating any out-of-roundness or eccentricity of the diaphragm extant through prior use. Bolts are applied in tapped openings of the segment rings and diaphragm to facilitate securement of the segment rings and diaphragm and the segments 34 are seal-welded to the diaphragm. New packing ring segments are provided in the dovetail grooves along the radial inner face of the segment rings to complete the stage sealing between the diaphragm and reduced diameter rotor.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: June 11, 1996
    Assignee: General Electric Co.
    Inventors: Shawn W. Galbraith, William V. Coll, Dennis R. Ahl, Keith E. Seconde