Patents by Inventor William A. Berkan

William A. Berkan 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).

  • Heated laminating roll
    Patent number: 5885410
    Abstract: The heated laminating roll of the present invention comprises a cylindrical core having an exterior surface, an electrical resistance heating wire disposed on the exterior surface of the cylindrical core, and a silicone rubber cover disposed on the core. The silicone rubber cover provides the exterior surface of the roll. A metallic mesh is disposed within the silicone rubber cover. The metallic mesh is electrically insulated from the heating wire and is also electrically grounded. The metallic mesh layer is typically constructed of copper. The roll also may include temperature sensing devices disposed within the silicone rubber cover. The temperature sensing devices may also be disposed within the interior of the cylindrical core. The heated laminating roll provides the benefits of using an electrical resistance heater wire and additionally includes means to effectively conduct heat throughout the roll as well as providing means to safely shield the user from electrical shock.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: March 23, 1999
    Inventor: William A. Berkan
  • Can holder
    Patent number: D258408
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: March 3, 1981
    Inventor: William A. Berkan, Jr.
  • Cargo restraint for pickup truck
    Patent number: D306003
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: February 13, 1990
    Inventor: William A. Berkan, Jr.
  • Combined flexible web, buckles and mounting panel for immobilizing objects
    Patent number: D312770
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: December 11, 1990
    Inventor: William A. Berkan, Jr.