Patents by Inventor Thomas R. Hay

Thomas R. Hay 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).

  • Rail inspection system
    Patent number: 7389694
    Abstract: An apparatus rides along a rail of a railroad track. A transmitter transmits ultrasonic guided waves bidirectionally along the rail while the apparatus and transmitter are moving along the railroad track. A sensor detects flaws in response to the transmitted ultrasonic guided waves while the apparatus, transmitter and sensor are moving along the railroad track. An electronic coupler operatively couples the sensor to monitoring equipment.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: June 24, 2008
    Inventors: Thomas R. Hay, Robert Hay, Joseph L. Rose