Patents by Inventor Duane Sherock

Duane Sherock 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).

  • Pipe thawing device
    Patent number: 4102358
    Abstract: A portable, compartmented receptacle, having an air pressure compartment and a vacuum compartment. Pump means to create pressure in said air compartment and means to heat the air on said air compartment. Pump means to create a vacuum in said vacuum compartment. A fitting communicating the interior of a frozen pipe with the interiors of said air compartment and said vacuum compartment and valves in the lines of communication to control the air pressure and vacuum and means to drain said vacuum compartment.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: July 25, 1978
    Inventor: Duane Sherock