Patents by Inventor David P. Fleming

David P. Fleming 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).

  • Dual clearance squeeze film damper
    Patent number: 4527910
    Abstract: This invention relates to a dual clearance hydrodynamic liquid squeeze film damper for a gas turbine engine. Under normal operating conditions the device functions as a conventional squeeze film damper, using only one of its oil films. When an unbalance reaches abusive levels, as may occur with a blade loss or foreign object damage, a second, larger-clearance film becomes active, controlling vibration amplitudes in a near-optimum manner until the engine can be safely shut down and repaired.
    Type: Grant
    Filed: April 5, 1984
    Date of Patent: July 9, 1985
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: David P. Fleming