Patents by Inventor David F. Thurston

David F. Thurston 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).

  • Optical rail gage/wear system
    Patent number: 4915504
    Abstract: Disclosed is a method and apparatus for determining the gage and/or wear of railroad tracks in which optical scanning techniques are used in conjuction with a programmable computer for determining the gage and/or wear of the rails.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: April 10, 1990
    Assignee: Norfolk Southern Corporation
    Inventor: David F. Thurston