Patents by Inventor David B. Troischt

David B. Troischt 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 for providing uniform radial clearance of seals between rotating and stationary components
    Patent number: 5503405
    Abstract: Arcuate seal segments have radially directed seal faces forming part of a labyrinth seal in a turbine. The segments are adjustably spaced from the locating flanges of the groove formed on a stationary part of the turbine housing to compensate for any distortion of the groove through use. In a positive pressure, variable clearance labyrinth seal, side seals are disposed between the locating flanges of the groove and the flanges of the seal segments and have surfaces at circumferentially spaced positions which are adjustable to maintain concentricity of the seal faces of the seal segments, notwithstanding the distortion of eccentricity of the groove and its locating flanges. Where the locating flanges of the segments normally engage the locating flanges of the groove, variable clearances are provided between those flanges by the interposition of dowels, plugs or pads such that the seal faces of the segments are maintained concentric, notwithstanding distortion of the locating fits.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: April 2, 1996
    Assignee: General Electric Co.
    Inventors: LeRoy D. Jewett, Earl H. Brinkman, Raymond J. Jones, David B. Troischt
  • Method for providing uniform radial clearance of labyrinth seals between rotating and stationary components
    Patent number: 5374068
    Abstract: Arcuate seal segments have radially directed seal faces forming part of a labyrinth seal in a turbine. The segments are adjustably spaced from the locating flanges of the groove formed on a stationary part of the turbine housing to compensate for any distortion of the groove through use. In a positive pressure, variable clearance labyrinth seal, side seals are disposed between the locating flanges of the groove and the flanges of the seal segments and have surfaces at circumferentially spaced positions which are adjustable to maintain concentricity of the seal faces of the seal segments, notwithstanding the distortion of eccentricity of the groove and its locating flanges. Where the locating flanges of the segments normally engage the locating flanges of the groove, variable clearances are provided between those flanges by the interposition of dowels, plugs or pads such that the seal faces of the segments are maintained concentric, notwithstanding distortion of the locating fits.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: December 20, 1994
    Assignee: General Electric Co.
    Inventors: LeRoy D. Jewett, Earl H. Brinkman, Raymond J. Jones, David B. Troischt