Patents by Inventor Mario Ravasio

Mario Ravasio 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).

  • Joints for high voltage cables insulated with impregnated paper or paper-polypropylene laminate (PPL)
    Patent number: 9306382
    Abstract: A method of jointing two high voltage impregnated cables may include exposing an impregnated cable insulation layer of cable ends by removing at least one protecting layer and an outer semiconducting layer; exposing a terminal length of conductors of the cable ends by cutting a portion of the impregnated cable insulation layer and by removing an inner semiconducting layer; mechanically and electrically connecting the conductors; filling at least in part a space left by the removed impregnated cable insulation layer with a conductive insert; providing an intermediate semiconducting layer to surround the conductive insert and abutting on portions of cable insulation layers adjacent to the conductive insert; applying a stratified insulation, impregnated with a second viscous compound, overlapping the exposed impregnated cable insulation layer of the cable ends and covering the intermediate semiconducting layer; electrically screening the conductors; and tightly containing the first and/or second viscous compound
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: April 5, 2016
    Assignee: PRYSMIAN S.P.A.
    Inventors: Pierluigi Ladié, Mario Ravasio
  • JOINT FOR HV CABLES INSULATED WITH IMPREGNATED PAPER OR PAPER-POLYPROPYLENE LAMINATE (PPL)
    Publication number: 20140124263
    Abstract: A method of jointing two high voltage impregnated cables may include exposing an impregnated cable insulation layer of cable ends by removing at least one protecting layer and an outer semiconducting layer; exposing a terminal length of conductors of the cable ends by cutting a portion of the impregnated cable insulation layer and by removing an inner semiconducting layer; mechanically and electrically connecting the conductors; filling at least in part a space left by the removed impregnated cable insulation layer with a conductive insert; providing an intermediate semiconducting layer to surround the conductive insert and abutting on portions of cable insulation layers adjacent to the conductive insert; applying a stratified insulation, impregnated with a second viscous compound, overlapping the exposed impregnated cable insulation layer of the cable ends and covering the intermediate semiconducting layer; electrically screening the conductors; and tightly containing the first and/or second viscous compound
    Type: Application
    Filed: March 1, 2011
    Publication date: May 8, 2014
    Applicant: PRYSMIAN S.P.A.
    Inventors: Pierluigi Ladié, Mario Ravasio