Patents by Inventor Dougas A. Keller

Dougas A. Keller 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).

  • Hybrid ceramic structure with internal cooling arrangements
    Patent number: 8202588
    Abstract: A structure for use in high temperature applications is provided. The structure may include an inner ceramic matrix composite (CMC) material (12). At least a portion of this CMC material includes waves that define a first wavy surface (140 and an opposed second wavy surface (16). A ceramic insulation material (18) may be bonded with the first wavy surface and includes a distal surface (20) for exposure to a high temperature environment. A core material (22) is bonded with at least a portion of the second wavy surface. One or more cooling channels (24) are disposed in the core material. An outer CMC material (26) may be joined to a portion of the inner CMC material. The core material is a material different than a matrix material of the inner CMC material.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: June 19, 2012
    Assignee: Siemens Energy, Inc.
    Inventors: Dougas A. Keller, Malberto F. Gonzalez, Jay A. Morrison