Patents by Inventor Harold M. Hattman

Harold M. Hattman 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).

  • Caulking nozzle
    Patent number: 5249876
    Abstract: A nozzle for applying filler material to a corner surface is provided having a generally cylindrical barrel. One end of the barrel has three beveled surfaces which taper to form a triangular spear shape. A central bore extends longitudinally throughout the extent of the barrel and forms a tip opening at the tapered end and a supply opening at the opposite end. Filler material proceeds through the central bore and out the tip opening on to the surface to which it is applied.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: October 5, 1993
    Inventor: Harold M. Hattman