Patents by Inventor David S. Gilbert, Jr.

David S. Gilbert, 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).

  • Drain nut pliers
    Patent number: 5531141
    Abstract: Cross pivoted handled pliers are disclosed having two elongated members joined together by a fixed pivot pin, and each having an arcuate jaw portion and a handle portion. The arcuate jaw portions have circular grooves and recesses therein to receive ribs and ears on an outer surface of a drain nut. The arcuate jaw portions additionally have a plurality of spaced teeth arrays formed on inner surfaces thereof which correspond to drain nuts of various diameters.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: July 2, 1996
    Inventor: David S. Gilbert, Jr.
  • Drain nut pliers
    Patent number: D371287
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: July 2, 1996
    Inventor: David S. Gilbert, Jr.