Patents by Inventor Scott T. Waechter

Scott T. Waechter 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).

  • Inner ring with independent thermal expansion for mounting gas turbine flow path components
    Patent number: 7686575
    Abstract: An inner mounting ring (20) for gas turbine flow path components such as shroud ring segments (24). The inner ring (20) may be mounted to an outer ring (22) on radially slidable mounts (26, 28) that maintain the two rings (20, 22) in coaxial relationship, but allows them to thermally expand at different rates. This allows matching of the radial expansion rate of the inner ring (20) to that of the turbine blade tips (32), thus providing reduced clearance (33) between the turbine blade tips (32) and the inner surface of the shroud ring segments (24) under all engine operating conditions. The inner ring (20) may be made of a material with a lower coefficient of thermal expansion than that of the outer ring (22).
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: March 30, 2010
    Assignee: Siemens Energy, Inc.
    Inventors: Abdullatif M. Chehab, Scott T. Waechter, Kevin M. Light, Brian H. Terpos, Zhengxiang Pu
  • INNER RING WITH INDEPENDENT THERMAL EXPANSION FOR MOUNTING GAS TURBINE FLOW PATH COMPONENTS
    Publication number: 20100031671
    Abstract: An inner mounting ring (20) for gas turbine flow path components such as shroud ring segments (24). The inner ring (20) may be mounted to an outer ring (22) on radially slidable mounts (26, 28) that maintain the two rings (20, 22) in coaxial relationship, but allows them to thermally expand at different rates. This allows matching of the radial expansion rate of the inner ring (20) to that of the turbine blade tips (32), thus providing reduced clearance (33) between the turbine blade tips (32) and the inner surface of the shroud ring segments (24) under all engine operating conditions. The inner ring (20) may be made of a material with a lower coefficient of thermal expansion than that of the outer ring (22).
    Type: Application
    Filed: August 17, 2006
    Publication date: February 11, 2010
    Inventors: Abdullatif M. Chehab, Scott T. Waechter, Kevin M. Light, Brian H. Terpos, Zhengxiang Pu