Patents by Inventor Cristiana Scelza
Cristiana Scelza 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: 8765035Abstract: A process for manufacturing a self-extinguishing cable including at least one transmissive element and at least one flame-retardant coating in a position radially external to the at least one transmissive element, wherein the at least one coating includes an expanded flame-retardant polymeric material having (a) at least one expandable polymer; (b) at least one expanding agent; (c) at least one flame-retardant inorganic filler, in an amount of 100 parts by weight of 250 parts by weight with respect to 100 parts by weight of the at least one expandable polymer. The process includes the following steps: (i) feeding the flame-retardant polymeric material to an extruding apparatus, therein melting and mixing it; (ii) passing the flame-retardant polymeric material obtained in step (i) through at least one static mixer; and (iii) depositing by extrusion the flame-retardant polymeric material obtained in step (ii) onto the at least one transmissive element conveyed to the extruding apparatus.Type: GrantFiled: December 24, 2003Date of Patent: July 1, 2014Assignee: Prysmian Cavi E Sistemi Energia S.R.L.Inventors: Gianbattista Grasselli, Alberto Bareggi, Cristiana Scelza, Marco Frigerio, Paolo Veggetti, Sergio Belli
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Patent number: 7744950Abstract: A process for producing a cable, such as, for medium-tension or high-tension power transmission or distribution, having at least one coating layer made of a thermoplastic polymer material. The process includes at least the following steps: (a) extruding a thermoplastic material of at least one thermoplastic polymer and at least one dielectric liquid; (b) passing the thermoplastic material through at least one static mixer; and (c) depositing and shaping the thermoplastic material around a conductor belonging to the cable so as to obtain a layer of thermoplastic coating on the conductor.Type: GrantFiled: November 23, 2001Date of Patent: June 29, 2010Assignee: Prysmian Cavi E Sistemi Energia S.R.L.Inventors: Sergio Belli, Alberto Bareggi, Gaia Dell'Anna, Pier Luigi Folcini, Cristiana Scelza
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Patent number: 7514633Abstract: A cable for use in a predetermined voltage class includes at least one conductor; at least one extruded insulating layer surrounding the conductor, the insulating layer being made from a non-crosslinked insulating material having at least one thermoplastic polymer and at least one dielectric liquid, the insulating layer having a thickness such as to provide a voltage gradient on the outer surface of the cable insulating layer not smaller than 1.0 kV/mm; and a protective element around the extruded insulating layer having a thickness and mechanical properties selected to provide a predetermined impact resistance capability, the protective element having at least one expanded polymeric layer, the thickness being sufficient to prevent detectable insulating layer damage upon impact of at least 25 J energy.Type: GrantFiled: December 3, 2003Date of Patent: April 7, 2009Assignee: Prysmian Cavi e Sistemi Energia S.R.L.Inventors: Gaia Dell'Anna, Cristiana Scelza, Sergio Belli, Alberto Bareggi
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Patent number: 7459635Abstract: A process for manufacturing an electric cable. In particular, the process includes the steps of: a) feeding a conductor at a predetermined feeding speed; b) extruding a thermoplastic insulating layer in a position radially external to the conductor; c) cooling the extruded insulating layer; and d) forming a circumferentially closed metal shield around the extruded insulating layer. The process may be carried out continuously, i.e., the time occurring between the end of the cooling step and the beginning of the shield forming step is inversely proportional to the feeding speed of the conductor.Type: GrantFiled: July 25, 2003Date of Patent: December 2, 2008Assignee: Prysmian Cavi E Sistemi Energia S.R.L.Inventors: Sergio Belli, Alberto Bareggi, Gaia Dell'Anna, Cristiana Scelza, Fabrizio Donazzi
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Publication number: 20070272426Abstract: A cable for use in a predetermined voltage class includes at least one conductor; at least one extruded insulating layer surrounding the conductor, the insulating layer being made from a non-crosslinked insulating material having at least one thermoplastic polymer and at least one dielectric liquid, the insulating layer having a thickness such as to provide a voltage gradient on the outer surface of the cable insulating layer not smaller than 1.0 kV/mm; and a protective element around the extruded insulating layer having a thickness and mechanical properties selected to provide a predetermined impact resistance capability, the protective element having at least one expanded polymeric layer, the thickness being sufficient to prevent detectable insulating layer damage upon impact of at least 25 J energy.Type: ApplicationFiled: December 3, 2003Publication date: November 29, 2007Inventors: Gaia Dell'Anna, Cristiana Scelza, Sergio Belli, Alberto Bareggi
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Publication number: 20070262483Abstract: A process for manufacturing a self-extinguishing cable including at least one transmissive element and at least one flame-retardant coating in a position radially external to the at least one transmissive element, wherein the at least one coating includes an expanded flame-retardant polymeric material having (a) at least one expandable polymer; (b) at least one expanding agent; (c) at least one flame-retardant inorganic filler, in an amount of 100 parts by weight of 250 parts by weight with respect to 100 parts by weight of the at least one expandable polymer.Type: ApplicationFiled: December 24, 2003Publication date: November 15, 2007Inventors: Gianbattista Grasselli, Alberto Bareggi, Cristiana Scelza, Marco Frigerio, Paolo Veggetti, Sergio Belli
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Publication number: 20070181333Abstract: A process for manufacturing an electric cable. In particular, the process includes the steps of: a) feeding a conductor at a predetermined feeding speed; b) extruding a thermoplastic insulating layer in a position radially external to the conductor; c) cooling the extruded insulating layer; and d) forming a circumferentially closed metal shield around the extruded insulating layer. The process according to the invention is carried out continuously, i.e., the time occurring between the end of the cooling step and the beginning of the shield forming step is inversely proportional to the feeding speed of the conductor.Type: ApplicationFiled: July 25, 2003Publication date: August 9, 2007Applicant: PIRELLI & C. S.P.A.Inventors: Sergio Belli, Alberto Bareggi, Gaia Dell'Anna, Cristiana Scelza, Fabrizio Donazzi
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Patent number: 7208682Abstract: An electrical power cable with a foamed, compressible, semiconductive insulation shield which serves as both a cushioning layer and an electrical shield.Type: GrantFiled: December 11, 2002Date of Patent: April 24, 2007Assignee: Prysmian Cavi e Sistemi Energia SrLInventors: Frank L. Kuchta, Stephen H. Foulger, Jason Carden, Chengjun Liu, Andrew Maunder, Alberto Bareggi, Luca Balconi, Cristiana Scelza
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Patent number: 7196270Abstract: A cable having at least one electrical conductor and at least one extruded covering layer based on a thermoplastic polymer material in admixture with a dielectric liquid. The thermoplastic polymer material is selected from: (a) at least one propylene homopolymer or at least one copolymer of propylene with at least one olefin comonomer; (b) a mechanical mixture of at least one propylene homopolymer or copolymer (a) and (c) at least one elastomeric copolymer or ethylene with at least one aliphatic ?-olefin, and optionally a polyene.Type: GrantFiled: January 15, 2004Date of Patent: March 27, 2007Assignee: Prysmian Cavi E Sistemi Energia S.r.L.Inventors: Gabriele Perego, Cristiana Scelza, Gaia Dell'Anna, Sergio Belli
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Patent number: 7105749Abstract: An electric cable for power transmission at low voltage has at least one conductor and an insulating coating surrounding the at least one conductor. The insulating coating has at least two insulating layers. In a radial direction from the inside toward the outside of the electrical cable, the insulating coating has at least one insulating layer made of a non-expanded polymeric material and at least one insulating layer made of an expanded polymeric material.Type: GrantFiled: April 16, 2002Date of Patent: September 12, 2006Assignee: Pirelli & C. S.p.A.Inventors: Sergio Belli, Alberto Bareggi, Cristiana Scelza
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Publication number: 20060124341Abstract: A cable having at least one electrical conductor and at least one extruded covering layer based on a thermoplastic polymer material in admixture with a dielectric liquid. The thermoplastic polymer material is selected from: (a) at least one propylene homopolymer or at least one copolymer of propylene with at least one olefin comonomer; (b) a mechanical mixture of at least one propylene homopolymer or copolymer (a) and (c) at least one elastomeric copolymer or ethylene with at least one aliphatic ?-olefin, and optionally a polyene. The cable of the invention possesses good mechanical and electrical properties, including high dielectric strength, in particular enabling it to be used at high operating temperature.Type: ApplicationFiled: January 15, 2004Publication date: June 15, 2006Inventors: Gabriele Perego, Cristiana Scelza, Gaia Dell'Anna, Sergio Belli
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Publication number: 20060102376Abstract: An electrical power cable with a foamed, compressible, semiconductive insulation shield which serves as both a cushioning layer and an electrical shield.Type: ApplicationFiled: December 11, 2002Publication date: May 18, 2006Inventors: Frank Kuchita, Stephen Foulger, Jason Carden, Chengiun Liu, Alberto Bareggi, Balconi Luca, Cristiana Scelza
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Publication number: 20050217891Abstract: An electric cable for power transmission at low voltage has at least one conductor and an insulating coating surrounding the at least one conductor. The insulating coating has at least two insulating layers. In a radial direction from the inside toward the outside of the electrical cable, the insulating coating has at least one insulating layer made of a non-expanded polymeric material and at least one insulating layer made of an expanded polymeric material.Type: ApplicationFiled: April 16, 2002Publication date: October 6, 2005Inventors: Sergio Belli, Alberto Bareggi, Cristiana Scelza
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Patent number: 6908673Abstract: A cable with recyclable covering, particularly for transporting or distributing medium or high voltage energy, in which at least one covering layer is based on a thermoplastic polymer material of a propylene homopolymer or a copolymer of propylene with ethylene or an ?-olefin other than propylene in mixture with a dielectric liquid. The cable possesses superior mechanical and electrical properties, including high dielectric strength, in particular enabling it to be used at high operating temperature.Type: GrantFiled: June 15, 2001Date of Patent: June 21, 2005Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Luca Castellani, Luca Martinotto, Cristiana Scelza, Enrico Albizzati
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Patent number: 6861143Abstract: A cable includes at least one conductor and at least one covering layer. The at least one covering layer includes a thermoplastic polymer material. The polymer material includes a propylene homopolymer or a copolymer of propylene with an olefin comonomer. The olefin comonomer is ethylene, one or more ?-olefins other than propylene, or ethylene and one or more ?-olefins other than propylene. The homopolymer or copolymer has a melting point between 140° C. and 165° C., a melting enthalpy between 30 J/g and 80 J/g, a boiling diethyl ether soluble fraction less than or equal to 12 wt % and melting enthalpy less than or equal to 4 J/g, a boiling n-heptane soluble fraction between 15 wt % and 60 wt % and melting enthalpy between 10 J/g and 40 J/g, and a boiling n-heptane insoluble fraction between 40 wt % and 8 wt % and melting enthalpy greater than or equal to 45 J/g.Type: GrantFiled: May 16, 2002Date of Patent: March 1, 2005Assignee: Pirelli Cavi e Sistemi S.p.A.Inventors: Luca Castellani, Cristiana Scelza, Gaia Dell'Anna, Enrico Albizzati
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Patent number: 6824870Abstract: A cable with recyclable covering, particularly for transporting or distributing medium or high voltage energy, in which at least one covering layer is based on thermoplastic polymer material comprising a propylene homopolymer or a copolymer of propylene with ethylene or an &agr;-olefin other than propylene in mixture with a dielectric liquid. The cable of the invention possesses superior mechanical and electrical properties, including high dielectric strength, in particular enabling it to be used at high operating temperature.Type: GrantFiled: August 19, 2003Date of Patent: November 30, 2004Assignee: Pirelli S.p.A.Inventors: Luca Castellani, Gaia Dell'Anna, Cristiana Scelza, Enrico Albizzati
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Patent number: 6797200Abstract: A fire-retardant composition includes a base polymer composition, including a polymer base material; melamine or a melamine derivative; red phosphorus; magnesium hydroxide or hydrated oxide, aluminum hydroxide or hydrated oxide, or magnesium hydroxide or hydrated oxide and aluminum hydroxide or hydrated oxide; and zeolite. The melamine or melamine derivative includes amounts between 5 and 50 parts-by-weight, inclusive. The red phosphorus includes amounts between 5 and 50 parts-by-weight, inclusive. The magnesium hydroxide or hydrated oxide, aluminum hydroxide or hydrated oxide, or magnesium hydroxide or hydrated oxide and aluminum hydroxide or hydrated oxide includes amounts between 10 and 150 parts-by-weight, inclusive. The zeolite includes amounts between 1 and 5 part-by-weight, inclusive. A self-extinguishing cable, including at least one conductor and at least one coating layer is also disclosed. The at least one coating layer includes the fire-retardant composition.Type: GrantFiled: January 7, 2003Date of Patent: September 28, 2004Assignee: Pirelli Cavi E Sistemi S.p.A.Inventors: Cristiana Scelza, Antonio Zaopo
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Publication number: 20040091631Abstract: A process for producing a cable, such as, for medium-tension or high-tension power transmission or distribution, having at least one coating layer made of a thermoplastic polymer material. The process includes at least the following steps: (a) extruding a thermoplastic material of at least one thermoplastic polymer and at least one dielectric liquid; (b) passing the thermoplastic material through at least one static mixer; and (c) depositing and shaping the thermoplastic material around a conductor belonging to the cable so as to obtain a layer of thermoplastic coating on the conductor.Type: ApplicationFiled: December 15, 2003Publication date: May 13, 2004Inventors: Sergio Belli, Alberto Bareggi, Gaia Dell'Anna, Pier Luigi Folcini, Cristiana Scelza
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Publication number: 20040038030Abstract: The invention describes a cable with recyclable covering, particularly for transporting or distributing medium or high voltage energy, in which at least one covering layer is based on thermoplastic polymer material comprising a propylene homopolymer or a copolymer of propylene with ethylene or an ∝-olefin other than propylene in mixture with a dielectric liquid. The cable of the invention possesses superior mechanical and electrical properties, including high dielectric strength, in particular enabling it to be used at high operating temperature.Type: ApplicationFiled: August 19, 2003Publication date: February 26, 2004Inventors: Luca Castellani, Gaia Dell'Anna, Cristiana Scelza, Enrico Albizzati
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Publication number: 20030173104Abstract: The present invention relates to a process for producing a cable, particularly for medium or high voltage electrical power transmission or distribution, said process comprising the step of making at least one coating of said cable from an oriented thermoplastic polymeric material, said thermoplastic polymeric material comprising a homopolymer of propylene or a copolymer of propylene and selected olefinic comonomer. In detail, this process comprises the steps of feeding at least one conductor of said cable to an extruding machine, extruding said at least one coating into a position radially external to said at least one conductor, orienting said at least one coating during said extrusion step. The present invention also relates to a cable, particularly for medium or high voltage electrical power transmission or distribution, provided with a coating of oriented thermoplastic polymeric material.Type: ApplicationFiled: May 1, 2003Publication date: September 18, 2003Inventors: Gaia Dell'Anna, Cristiana Scelza, Luca Catellani, Alberto Bareggi, Enrico Albizzati