Patents by Inventor V. T. Hawthorne

V. T. Hawthorne 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).

  • Method of eliminating truck hunting in railway trucks
    Patent number: 4393957
    Abstract: Truck hunting is eliminated in railway vehicles by applying a low coefficient of friction material to the vehicle wheels so that a lubricating film is provided between the vehicle wheels and the rail on which they ride which serves to increase the critical speed of a rail vehicle, i.e., the speed at which truck hunting occurs, to a value above its operating speed.
    Type: Grant
    Filed: January 27, 1981
    Date of Patent: July 19, 1983
    Inventor: V. T. Hawthorne