Patents by Inventor Stephen J. Messmann

Stephen J. Messmann 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).

  • Turbine blade with tuned damping structure
    Patent number: 9121288
    Abstract: A turbine blade is provided comprising: a root; an airfoil comprising an external wall extending radially from the root and having a radially outermost portion; and a damping structure. The external wall may comprise first and second side walls joined together to define an inner cavity of the airfoil. The damping structure may be positioned within the airfoil inner cavity and coupled to the airfoil so as to define a tuned mass damper.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: September 1, 2015
    Assignee: Siemens Energy, Inc.
    Inventors: Christian X. Campbell, Stephen J Messmann
  • TURBINE BLADE WITH TUNED DAMPING STRUCTURE
    Publication number: 20130294913
    Abstract: A turbine blade is provided comprising: a root; an airfoil comprising an external wall extending radially from the root and having a radially outermost portion; and a damping structure. The external wall may comprise first and second side walls joined together to define an inner cavity of the airfoil. The damping structure may be positioned within the airfoil inner cavity and coupled to the airfoil so as to define a tuned mass damper.
    Type: Application
    Filed: May 4, 2012
    Publication date: November 7, 2013
    Inventors: CHRISTIAN X. CAMPBELL, Stephen J. Messmann