Patents by Inventor Steven L. Puterbaugh

Steven L. Puterbaugh 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).

  • Gas-turbine brush seals with permanent radial gap
    Patent number: 6488471
    Abstract: Certain transient events such as hard landings, high g-rate turns, thermal conditions, and high turbulence may cause rubbing events inside the gas turbine that result from the flexure of the engine shafts. In order to prevent permanent damage to the engine or operational interference, brush seals are used such that the tips of the stator blades and the tips of the respective opposing annular brush seals, and the tips of the rotor blades and the tips of the respective opposing annular brush seals define substantial radial clearances that provide gaps that remain open under all regular and normal operating conditions of the gas engine.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: December 3, 2002
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Marvin A. Stibich, Gregory S. Bloch, Steven L. Puterbaugh