Patents by Inventor Thomas Andrew Hedges

Thomas Andrew Hedges 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).

  • Patent number: 6169368
    Abstract: A visual information system includes an array of light emitting elements located at the side of a train track. The elements are individually energizable by a controller in response to a predetermined program stored in a memory and representative of a predetermined visual image. The controller causes selected elements to be turned ON and OFF, some repetitively, in a predetermined sequence as dictated by the program with a time span of 0.015 seconds. A sensor activates the controller upon the approach of a train so that a passenger gazing at the array as the train passes will perceive the image apparently extending over an area substantially greater than the area of said array.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: January 2, 2001
    Assignee: Adflash Limited
    Inventors: Guy Edward John Margetson, Thomas Andrew Hedges, Roy Wyatt