Patents by Inventor Frank T. Carr

Frank T. Carr 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).

  • Bore probe for tube inspection with guided waves and method therefor
    Patent number: 5734588
    Abstract: Guided ultrasonic waves are used for the detection of defective tubes in a heat exchanger or steam generator by using a transducer which generates a guided wave at predetermined parameters of phase velocity and frequency to operate at a point on a dispersion curve which minimizes leakage of ultrasonic energy to fluid surrounding the tube. Various techniques of generating ultrasonic waves of various phase velocities such as a comb type filter allow phase velocity points on a dispersion curve to be freely selected.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: March 31, 1998
    Assignee: Electric Power Research Institute Inc.
    Inventors: Joseph L. Rose, John J. Ditri, Frank T. Carr, Jack C. Spanner, Jr., Dale Jiao