Patents by Inventor John D. Wardell

John D. Wardell 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).

  • Labyrinth seal for turbine dovetail
    Patent number: 8210821
    Abstract: A labyrinth seal that may include a first leg positioned about a high-pressure side of the dovetail tab, a second leg positioned about a low-pressure side of the dovetail tab, and a labyrinth chamber positioned between the first leg and the second leg. High-pressure fluid passing through the gap about the first leg expands within the labyrinth chamber so as to limit an amount of the high-pressure fluid that passes beyond the second leg.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: July 3, 2012
    Assignee: General Electric Company
    Inventors: Brian P. Arness, Tara Easter McGovern, John D. Wardell, Omprakash Samudrala
  • Sealing mechanism with pivot plate and rope seal
    Patent number: 8011894
    Abstract: A sealing system for sealing a gap between a dovetail tab of a bucket and a rotor. The sealing system may include a sealing slot positioned about the dovetail tab and a pivot plate positioned within the sealing slot. The sealing slot may include a pivot point and a rest ledge such that the pivot plate pivots about the pivot point and into the gap when the bucket rotates.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: September 6, 2011
    Assignee: General Electric Company
    Inventors: Brian P. Arness, Louis Veltre, Ariel Kelsey Coleman Harter, John D. Wardell