Patents by Inventor Leonard Wetz

Leonard Wetz 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).

  • Drill resistant hard plate and method for manufacture thereof
    Patent number: 5396041
    Abstract: A highly drill-resistant element, suitable for inclusion into the walls and/or doors of a security container to resist drilling to access the contents of the container is formed by welding onto a steel plate formed of REPUBLIC 100-AR (TM) steel a layer of Tube BORIUM.RTM. material by a known tungsten-inert-gas (TIG welding process). The REPUBLIC 100-AR (TM) steel has a chemical composition and is manufactured to inherently possess a very high yield strength and abrasion resistance. The Tube BORIUM.RTM. material, welded by the thick process, provides a very hard and drill-resistant layer comprising a heterogenous suspension of tungsten carbide particles of selected size in a steel matrix.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: March 7, 1995
    Inventors: J. Clayton Miller, Kevin Rafferty, Leonard Wetz