Patents by Inventor Robert L. Riggs

Robert L. Riggs 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: 9170072
    Abstract: A portable ballistic shield and mount combination includes a mounting plate for attachment to a vehicle door and a ballistic shield removably engaged with the mounting plate. The ballistic shield has a handle extending outwardly therefrom. When a user of the portable ballistic shield grasps the handle and applies force away from the mounting plate, the ballistic shield detaches from the mounting plate.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: October 27, 2015
    Inventor: Robert L. Riggs
  • Patent number: 4266796
    Abstract: In the present construction the tongue wheel is mounted on a strut assembly for pivotal movement from an upper carrying position with the wheel above the tongue to a lower working position with the wheel below the tongue. A lever is insertable in a socket on the strut assembly to pry the wheel down to its working position and lift the tongue off the trailer hitch of the towing vehicle. The same lever is insertable in a different socket in the strut assembly to steer the tongue wheel during manual maneuvering of the trailer. A stand or foot is extendable from the strut assembly to support the tongue independently of said wheel when desired. When the tongue wheel is shifted to its carrying position above the tongue it may be locked in such position to prevent theft of the wheel.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: May 12, 1981
    Inventors: Robert L. Riggs, Howard Riggs