Patents by Inventor John N. Flint

John N. Flint 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: 5052852
    Abstract: A concrete keyed joint is formed using a joint plate which has coplanar top and bottom sections interconnected to a parallel rearwardly spaced central section by rearwardly convergent upper and lower inclined sections and spaced pair of holes in the inclined section. Pegs or stakes support the joint plate vertically and are locked by wedges which allow vertical adjustment of the joint plate and then lock it in position. A resilient filler strip is fitted to the top of the plate to accommodate thermal expansion and contraction of the concrete slabs separated by the joint plate.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: October 1, 1991
    Assignees: Alma Irene Connolly, Lynne Patricia Oldfield
    Inventors: Paul F. Connolly, John N. Flint