Patents by Inventor Pierluigi Ladie?
Pierluigi Ladie? 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).
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Patent number: 9306382Abstract: 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 compoundType: GrantFiled: March 1, 2011Date of Patent: April 5, 2016Assignee: PRYSMIAN S.P.A.Inventors: Pierluigi Ladié, Mario Ravasio
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Publication number: 20140124263Abstract: 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 compoundType: ApplicationFiled: March 1, 2011Publication date: May 8, 2014Applicant: PRYSMIAN S.P.A.Inventors: Pierluigi Ladié, Mario Ravasio
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Patent number: 7358435Abstract: Electric power transport system having a cold dielectric superconducting cable, a cryostat and a cryogenic fluid. The cryostat has modules including an inner tube, an outer tube, a couple of gaskets, and a duct connected to the coupling surface between the gaskets of at least one flange with the environment external to the cryostat.Type: GrantFiled: December 17, 2001Date of Patent: April 15, 2008Assignee: Prysmian Cavi e Sistemi Energia S.r.l.Inventors: Pierluigi Ladie′, Valter Castiglioni, Marco Nassi
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Patent number: 7040002Abstract: A method of terminating at least one conductor of a superconducting cable comprising a plurality of superconducting tapes, comprising the steps of associating an electrically conductive connector radially at the at least one conductor, embedding and end of the superconducting tapes in a thermosetting resin, embedding an end portion of the superconducting tapes in a solder and achieving an electric contact by the solder. Moreover, the invention relates to a terminated conductor of a superconducting cable, a superconducting cable, a joint between conductors of two superconducting cables, a current transmission/distribution network, and a terminator for at least one conductor of a superconducting cable that embody the above method.Type: GrantFiled: August 15, 2002Date of Patent: May 9, 2006Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Walter Castiglioni, Gianangelo Cavalleri, Giacomo Coletta, Pietro Corsaro, Dirk Kunze, Pierluigi Ladie′, Marco Nassi, Sergio Spreafico
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Publication number: 20050056456Abstract: Electric power transport system having a cold dielectric superconducting cable, a cryostat and a cryogenic fluid. The cryostat has modules including an inner tube, an outer tube, a couple of gaskets, and a duct connected to the coupling surface between the gaskets of at least one flange with the environment external to the cryostat.Type: ApplicationFiled: December 17, 2001Publication date: March 17, 2005Inventors: Pierluigi Ladie', Valter Castiglioni, Marco Nassi
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Patent number: 6844490Abstract: A superconducting cable having at least one phase and having: a) a layer of tapes of superconducting material; b) a tubular element of superconducting material for supporting said layer of tapes, said tubular element having at least one portion made of metallic material, and being in electrical contact with the layer of tapes of superconducting material; c) a cooling circuit adapted to cool the superconducting material to a working temperature not higher than its critical temperature, having a fluid at a predetermined working pressure ranging between a minimum value and a maximum value; wherein the deformation of said tapes of superconducting material, consequent to a temperature variation between the room temperature and the working temperature of the cable is lower than the critical deformation of the same tapes.Type: GrantFiled: June 22, 2001Date of Patent: January 18, 2005Assignee: Pirelli Cavi E Sistemi S.p.A.Inventors: Marco Nassi, Pierluigi Ladie′
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Patent number: 6835892Abstract: Superconducting cable (1) comprising: a) a layer (20) of tapes comprising superconducting material, b) a tubular element (6) for supporting said layer (20) of tapes comprising superconducting material, c) a cooling circuit, adapted to cool the superconducting material to a working temperature not higher than its critical temperature, characterized in that said tubular element (6) is composite and comprises a predetermined amount of a first material having a first thermal expansion coefficient and a second material having a thermal expansion coefficient higher than that of said first material, said thermal expansion coefficients and said amounts of said first and second material being predetermined in such a way that said tubular element has an overall thermal shrinkage between the room temperature and said working temperature of the cable such as to cause a deformation of said tapes comprising superconducting material lower than the critical deformation of the same tapes.Type: GrantFiled: February 13, 2003Date of Patent: December 28, 2004Assignee: Pirelli Cavi e Sistemi S.p.AInventors: Marco Nassi, Pierluigi Ladie′
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Patent number: 6743984Abstract: The present invention relates to an electrical power transmission system using superconductors which is compatible with conventional transmission systems. In a first aspect, a method for installing in an electrical power transmission system a connection using a coaxial superconducting cable, includes determining a reactance of a conventional cable suitable for the connection; installing the coaxial superconducting cable, and increasing a reactance of the coaxial superconducting cable, in such a way that the reactance of the superconducting cable is substantially equal to the reactance of the conventional cable. In particular, increasing the reactance of the coaxial superconducting cable includes connecting in series with the coaxial superconducting cable an inductive element, preferably made from a superconducting material.Type: GrantFiled: June 22, 2001Date of Patent: June 1, 2004Assignee: Pirelli Cavi E Sistemi S.P.A.Inventors: Marco Nassi, Pierluigi Ladie′
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Patent number: 6730851Abstract: A superconducting cable includes a cryogenic fluid, a superconducting conductor, and a cryostat. A layer impervious to the cryogenic fluid is provided between the superconducting conductor and the cryogenic fluid. The superconducting conductor operates in a space substantially free from fluids liquefying at a temperature greater than or equal to an operative temperature of the superconducting cable. A method for protecting a superconducting cable from formation of balloons includes isolating the superconducting conductor from the cryogenic fluid using a layer impervious to the cryogenic fluid and operating the superconducting conductor in a space substantially free from fluids liquefying at a temperature greater than or equal to an operative temperature of the superconducting cable. A current transmission/distribution network including at least one of the superconducting cables is also disclosed.Type: GrantFiled: October 5, 2001Date of Patent: May 4, 2004Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Pierluigi Ladie', Paola Caracino, Marco Nassi
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Patent number: 6633003Abstract: Superconducting cable (1) comprising: a) a layer (20) of tapes comprising superconducting material, b) a tubular element (6) for supporting said layer (20) of tapes comprising superconducting material, c) a cooling circuit, adapted to cool the superconducting material to a working temperature not higher than its critical temperature, characterized in that said tubular element (6) is composite and comprises a predetermined amount of a first material having a first thermal expansion coefficient and a second material having a thermal expansion coefficient higher than that of said first material, said thermal expansion coefficients and said amounts of said first and second material being predetermined in such a way that said tubular element has an overall thermal shrinkage between the room temperature and said working temperature of the cable such as to cause a deformation of said tapes comprising superconducting material lower than the critical deformation of the same tapes.Type: GrantFiled: June 22, 2001Date of Patent: October 14, 2003Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Marco Nassi, Pierluigi Ladie′
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Publication number: 20030164246Abstract: Superconducting cable (1) comprising:Type: ApplicationFiled: February 13, 2003Publication date: September 4, 2003Applicant: Pirelli Cavi E Sistemi S.p.A.Inventors: Marco Nassi, Pierluigi Ladie'
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Publication number: 20030040439Abstract: The invention relates to a method of terminating at least one conductor (10) of a superconducting cable comprising a plurality of superconducting tapes (13), comprising the steps of associating an electrically conductive connector (11) radially at the at least one conductor (10), embedding and end of the superconducting tapes (13) in a thermosetting resin (14), embedding an end portion of the superconducting tapes (13) in a solder (16) and achieving an electric contact by the solder (16). Moreover, the invention relates to a terminated conductor of a superconducting cable, a superconducting cable, a joint between conductors of two superconducting cables, a current transmission/distribution network, and a terminator for at least one conductor of a superconducting cable that embody the above method.Type: ApplicationFiled: August 15, 2002Publication date: February 27, 2003Inventors: Walter Castiglioni, Gianangelo Cavalleri, Giacomo Coletta, Pietro Corsaro, Dirk Kunze, Pierluigi Ladie', Marco Nassi, Sergio Spreafico
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Publication number: 20020098985Abstract: Superconducting cable comprising a cryogenic fluid, a superconducting conductor and a cryostat has a layer impervious to the cryogenic fluid between the superconducting conductor and the cryogenic fluid, and the superconducting conductor operates in a space substantially free from fluids liquefying at a temperature equal or higher than the operative temperature.Type: ApplicationFiled: October 5, 2001Publication date: July 25, 2002Inventors: Pierluigi Ladie', Paola Caracino, Marco Nassi
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Publication number: 20020038719Abstract: Superconducting cable (1) comprising:Type: ApplicationFiled: June 22, 2001Publication date: April 4, 2002Inventors: Marco Nassi, Pierluigi Ladie
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Publication number: 20020035039Abstract: A superconducting cable having at least one phase and having: a) a layer of tapes of superconducting material; b) a tubular element of superconducting material for supporting said layer of tapes, said tubular element having at least one portion made of metallic material, and being in electrical contact with the layer of tapes of superconducting material; c) a cooling circuit adapted to cool the superconducting material to a working temperature not higher than its critical temperature, having a fluid at a predetermined working pressure ranging between a minimum value and a maximum value; wherein the deformation of said tapes of superconducting material, consequent to a temperature variation between the room temperature and the working temperature of the cable is lower than the critical deformation of the same tapes.Type: ApplicationFiled: June 22, 2001Publication date: March 21, 2002Inventors: Marco Nassi, Pierluigi Ladie'
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Publication number: 20020019315Abstract: In general terms, the present invention relates to an electrical power transmission system using superconductors which is compatible with conventional transmission systems. In a first aspect, the present invention relates to a method for installing in an electrical power transmission system a connection using a coaxial superconducting cable, comprising the following steps: determining the reactance of a conventional cable suitable for the said connection; installing the coaxial superconducting cable; increasing the reactance of the coaxial superconducting cable, in such a way that the reactance of the superconducting cable is substantially equal to the reactance of the conventional cable. In particular, the step of increasing the reactance of the coaxial superconducting cable comprises the step of connecting in series with the coaxial superconducting cable an inductive element, preferably made from a superconducting material.Type: ApplicationFiled: June 22, 2001Publication date: February 14, 2002Inventors: Marco Nassi, Pierluigi Ladie