Patents by Inventor Thomas Vranas

Thomas Vranas 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).

  • Hot foil transducer skin friction sensor
    Patent number: 4317102
    Abstract: An improved hot wire transducer skin friction sensor 10 and 19. The device utilizes foil transducers 11 and 18 with only one edge exposed to the fluid flow. The surface 28 and 31 are polished producing a foil transducer 11 and 18 that does not generate turbulence while sufficiently thick to carry the required electrical current for high temperature fluid flow. The assembly utilized a precut layered metal sandwich 20 with attached electrodes eliminating a need for welding and individual sensor calibration.
    Type: Grant
    Filed: August 14, 1980
    Date of Patent: February 23, 1982
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Thomas Vranas
  • High temperature strain gage calibration fixture
    Patent number: 3956919
    Abstract: An apparatus and method for calibrating high temperature strain gases which serve for both dead weight and constant deflection measurements. A cantilever support arm allows the test unit to slide into a furnace while one end is subjected to bending strain either by hanging weights upon it or by deflecting it with a push rod. The dual nature of the fixture permits both tests to be run without change of the test specimen or removal from the furnace.
    Type: Grant
    Filed: December 19, 1974
    Date of Patent: May 18, 1976
    Assignee: The United States of America as represented by the United States National Aeronautics and Space Administration Office of General Counsel-Code GP
    Inventor: Thomas Vranas