Patents by Inventor Douglas Carl Colwell

Douglas Carl Colwell 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).

  • Low windage loss, light weight closure bucket design and related method
    Patent number: 6428279
    Abstract: A turbine closure bucket adapted to complete assembly of a row of tangential entry buckets on a rotor wheel includes an airfoil portion and a mounting portion for mounting the bucket to a turbine wheel. The mounting portion has front and back faces, with weight reduction cavities formed internally in the front and back faces. Externally, the front and back faces of the closure bucket are substantially identical to front and back faces of adjacent buckets in the row.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: August 6, 2002
    Assignee: General Electric Company
    Inventors: George Ernest Reluzco, David Alan Caruso, Douglas Carl Colwell, James Rollins Maughan
  • Low windage loss, light weight closure bucket design and related method
    Publication number: 20020081196
    Abstract: A turbine closure bucket adapted to complete assembly of a row of tangential entry buckets on a rotor wheel includes an airfoil portion and a mounting portion for mounting the bucket to a turbine wheel. The mounting portion has front and back faces, with weight reduction cavities formed internally in the front and back faces. Externally, the front and back faces of the closure bucket are substantially identical to front and back faces of adjacent buckets in the row.
    Type: Application
    Filed: December 22, 2000
    Publication date: June 27, 2002
    Inventors: George Ernest Reluzco, David Alan Caruso, Douglas Carl Colwell, James Rollins Maughan