Patents by Inventor Clifford J. Obara

Clifford J. Obara 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).

  • Off-surface infrared flow visualization
    Patent number: 5200621
    Abstract: A method for visualizing off-surface flows consists of releasing a gas with infrared absorbing and emitting characteristics into a fluid flow and imaging the flow with an infrared imaging system. This method allows for visualization of off-surface fluid flow in-flight.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: April 6, 1993
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Gregory S. Manuel, Kamran Daryabeigi, Clifford J. Obara, David W. Alderfer
  • Geometries for roughness shapes in laminar flow
    Patent number: 4619423
    Abstract: This invention is for a passive laminar flow airfoil which has an upper skin 12 and lower skin 14 joined at a trailing edge 16. A leading edge structure 20, such as de-icing equipment, is joined to the upper and lower skins by interface mechanisms 30 and 35. Generally, the interface mechanisms are forward facing steps, with or without adjacent gaps, shaped and dimensioned to accomplish laminar flow using standard airfoil manufacturing techniques.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: October 28, 1986
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Bruce J. Holmes, Glenn L. Martin, Christopher S. Domack, Clifford J. Obara, Ahmed A. Hassan