Patents by Inventor Leroy S. Nelson

Leroy S. Nelson 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).

  • Portable Track-Out Prevention Systems
    Publication number: 20090276969
    Abstract: A portable system for preventing the “track out” of dust, mud, and similar debris by vehicles leaving a construction site. The system provides a plurality of rollers in combination with vibratory structures designed to rotate and vibrate the vehicle tires in order to dislodge debris from the vehicle.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 12, 2009
    Inventors: Carl J. Buetzow, Leroy S. Nelson