Patents by Inventor Robert E. Hildreth, Jr.

Robert E. Hildreth, Jr. 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: 3951384
    Abstract: A deformable elongate upright hollow cylindrical body is formed by a plurality of concentrically stacked tire casings which are bound together by cables. Retaining anchors, each having an eye encircling one of the cables, holds the cylindrical body in a predetermined position to function as a vehicle barrier. Used, empty crushable containers within the hollow body provide additional energy absorption. A barricade wall is fabricated from several deformable bodies, each in tangential contact and secured by additional cables.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: April 20, 1976
    Inventor: Robert E. Hildreth, Jr.