Patents by Inventor David F. Salzl

David F. Salzl 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).

  • Flexible duct cutter hand tool
    Patent number: 5226237
    Abstract: A hand tool combination of a knife having a double edged blade for piercing and cutting duct insulation and a wire cutter swingably engaged with the knife for cutting wire embedded in the duct insulation. The hand tool includes two jaws. One jaw forms the double edged blade and includes an anvil. The other jaw includes a wire cutting edge. The jaws are drawn together to operate the wire cutter by squeezing handles engaged with the jaws. The handles are also manipulated to operate the blade.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: July 13, 1993
    Assignee: Malco Products, Inc.
    Inventors: James K. Rancour, Jerome F. Fries, David F. Salzl