Patents by Inventor John H. Treadwell

John H. Treadwell 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: 4906192
    Abstract: An educational device particularly for use as a ski trainer comprising a rig consisting of a baseboard on which a person under instruction stands on a pair of skis mounted on sensors arranged on the baseboard, the sensors being responsive to the weight, pressure, or movement of the person to produce output signals therefrom which are converted and computed in a data processing unit to provide a simulated trace of the weight, pressure or movement of the person or a simulated trajectory representing his skiing track on the screen of a visual display unit.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: March 6, 1990
    Inventors: Michael A. Smithard, John H. Treadwell