Patents by Inventor Marco Nassi
Marco Nassi 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: 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: 6864417Abstract: A system (100) for transporting electric energy in superconductivity conditions includes a superconducting cable (13) including superconducting material, and a cryogenic plant (1) for cooling said superconducting cable (13) below the critical temperature of the material, comprising: a) a circuit (2) for circulating a first refrigerating fluid having a first predetermined temperature lower than the critical temperature of the superconducting material, from and to the superconducting cable (13); b) a refrigerating circuit (3) for cooling a second refrigerating fluid to a second predetermined temperature lower than the temperature of the first refrigerating fluid; c) a heat exchange unit (31) for effecting a heat exchange between the first and second refrigerating fluids, which is characterized in that the heat exchange unit (31) is provided with a storage unit (4) of a third refrigerating fluid having a third predetermined temperature lower than the temperature of the first refrigerating fluid and being in heatType: GrantFiled: January 28, 2002Date of Patent: March 8, 2005Assignee: Pirelli Cavi E Sistemi S.p.A.Inventors: Massimo Bechis, 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: 6794579Abstract: A high temperature superconducting cable includes a tubular support and a plurality of superconducting tapes. The superconducting tapes include a superconducting material enclosed in a metal covering, spirally wound onto the tubular support to form at least an electroinsulated, thermally-insulated, and refrigerated superconducting layer. The superconducting tapes also include at least a metal strip coupled to the metal covering. A process for manufacturing high temperature superconducting cables is also disclosed.Type: GrantFiled: February 4, 2000Date of Patent: September 21, 2004Assignee: Pirelli Cavi E Sistemi S.p.A.Inventors: Paola Caracino, Laura Gherardi, Piero Metra, Marco Nassi
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Patent number: 6784362Abstract: The invention features a superconducting ceramic conductor for use in a preselected fluid cryogen. The conductor includes a composite ceramic superconducting wire having an outer surface along its length and a sealing structure hermetically surrounding the outer surface to prevent the cryogen from infiltrating into the wire and degrading its superconducting properties. The sealing. structure includes a cured polymer layer encircling the outside surface of the wire.Type: GrantFiled: September 8, 2000Date of Patent: August 31, 2004Assignee: American Superconductor CorporationInventors: David M. Buczek, Marco Nassi
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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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Patent number: 6512311Abstract: A superconducting cable (1) for high power with at least one phase comprises a superconducting core (2) wherein a plurality of elements (3) are housed, which are structurally independent and magnetically uncoupled, each of which includes—for each phase—a couple of phase and neutral coaxial conductors, each formed by at least a layer of superconducting material, electrically insulated from one another by interposition of a dielectric material (8). Thanks to the distribution of the superconducting material into several coaxial conductive elements (3), the cable (1) allows to transmit high current amounts in conditions of superconductivity, while using a high-temperature superconducting material sensitive to the magnetic field.Type: GrantFiled: December 4, 2000Date of Patent: January 28, 2003Assignee: Pirelli Cavi S.p.A.Inventors: Piero Metra, Marco Nassi
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Publication number: 20030010527Abstract: A superconducting cable (1) for high power with at least one phase comprises a superconducting core (2) wherein a plurality of elements (3) are housed, which are structurally independent and magnetically uncoupled, each of which includes—for each phase—a couple of phase and neutral coaxial conductors, each formed by at least a layer of superconducting material, electrically insulated from one another by interposition of a dielectric material (8).Type: ApplicationFiled: December 4, 2000Publication date: January 16, 2003Inventors: Piero Metra, Marco Nassi
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Publication number: 20020134533Abstract: A system (100) for transporting electric energy in superconductivity conditions is described, which comprisesType: ApplicationFiled: January 28, 2002Publication date: September 26, 2002Inventors: Massimo Bechis, Marco Nassi
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Patent number: 6444917Abstract: The invention features a superconducting conductor for use in a preselected fluid cryogen including a composite ceramic superconducting wire having an outer surface along its length; and a sealing structure hermetically surrounding the outer surface to prevent the cryogen from infiltrating into the wire and degrading its superconducting properties, even under pressurized conditions. The superconducting conductor can be used in superconducting cabling and coil applications. The sealing structure can be formed by laminating metallic tapes to the wire, encircling at least one metallic sheet around the outer surface of the wire, welding a plurality of metallic sheets to one another to encircle the outer surface of the wire, or forming a polymer coating completely covering the outer surface of the wire.Type: GrantFiled: July 23, 1999Date of Patent: September 3, 2002Assignees: American Superconductor Corporation, Pirelli Cavi e Sistemi S.p.A.Inventors: John D. Scudiere, David M. Buczek, Steven Fleshler, Derek Patrick Daly, Richard E. Harnois, Stephen R. Norman, Paola Caracino, 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'