Patents by Inventor Paul K. dePratter

Paul K. dePratter 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).

  • Patent number: 5281757
    Abstract: An electrical power cable with a stranded conductor, a semi-conductive stress control layer around the conductor, a layer of insulation around the stress control layer, a semi-conductive insulation shield layer around the layer of insulation, an imperforate metal strip with overlapping edge portions around the shield layer and a polymeric jacket around the metal strip. The strip is free to move with respect to the jacket and the shield layer with expansion and contraction of the cable elements with temperature changes, and the overlapping edge portions of the strip are bonded together by an adhesive which permits the edge portions to move relative to each other with such temperature changes without creating fluid passageways between the edge portions. A cushioning layer can be between the shield layer and the strip and preferably, the cable is water sealed.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: January 25, 1994
    Assignee: Pirelli Cable Corporation
    Inventors: Carlo Marin, Fabrizio Marciano-Agostinelli, Paul K. dePratter, Frank L. Kuchta
  • Patent number: RE36307
    Abstract: An electrical power cable with a stranded conductor, a semi-conductive stress control layer around the conductor, a layer of insulation around the stress control layer, a semi-conductive insulation shield laser around the layer of insulation, an imperforate metal strip with overlapping edge portions around the shield layer and a polymeric jacket around the metal strip. The strip is free to move with respect to the jacket and the shield layer with expansion and contraction of the cable elements with temperature changes, and the overlapping edge portions of the strip are bonded together by an adhesive which permits the edge portions to move relative to each other with such temperature changes without creating fluid passageways between the edge portions. A cushioning layer can be between the shield layer and the strip and preferably, the cable is water sealed.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: September 21, 1999
    Assignee: Pirelli Cable Corporation
    Inventors: Carlo Marin, Fabrizio Marciano-Agostinelli, Paul K. dePratter, Frank L. Kuchta