Patents Assigned to Prysmian S.p.A.
  • Patent number: 10718917
    Abstract: An optical fiber cable includes a plurality of flexible ribbons, a plurality of first bonding regions and a second bonding region. Each of the plurality of flexible ribbons includes a plurality of optical fibers. Adjacent ones of the plurality of optical fibers are attached to each other by one of the plurality of first bonding regions. The second bonding region joins a first one of the plurality of flexible ribbons with a second one of the plurality of flexible ribbons.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: July 21, 2020
    Assignee: Prysmian S.p.A.
    Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Brian G. Risch
  • Publication number: 20200211733
    Abstract: The present disclosure describes a downwell pump three-phase power cable containing three power conductors each provided with at least one extruded polymeric insulating layer made of an insulating polymer selected from an ethylene copolymer or a fiuoropolymer, a metal tube in radial external position with respect to the insulating layer, and an extruded encapsulating layer embedding the three power conductors and made of fiuoropolymer.
    Type: Application
    Filed: June 9, 2017
    Publication date: July 2, 2020
    Applicant: Prysmian S.p.A.
    Inventors: Toma MILOUCHEV, Bill FOE, Edward WIENCEK
  • Publication number: 20200211732
    Abstract: The present invention relates to an energy cable comprising a cable core comprising an electric conductor and a crosslinked electrically insulating layer, wherein the cable core further comprises a microporous material having a bimodal pore volume distribution with a first peak of the distribution having a maximum at a pore diameter value within the range 5.5-6.5 ? and a second peak of the distribution having a maximum at a pore diameter value within the range 7.5-8.5 ?, the maximum values of the first and the second peak corresponding to an incremental pore volume of at least 4×10?3 cm3/g. The present invention also relates to a method for extracting methane crosslinking by-products from a crosslinked electrically insulating layer of an energy cable.
    Type: Application
    Filed: September 4, 2017
    Publication date: July 2, 2020
    Applicants: Prysmian S.p.A., Politecnico Di Milano
    Inventors: Rodolfo SICA, Dario BARTOLINI, Attilio CITTERIO
  • Patent number: 10692626
    Abstract: An electric cable (10) is disclosed comprising a) at least one cable core (11) comprising at least one power transmissive insulated element (12); and b) a metallic outer armor (19) containing the cable core (11); wherein the outer armor (19) comprises a carbon steel tape (20) wound according to helical interlocked windings, the tape (20) being coated with an aluminum coating layer (22) having a thickness equal to or lower than 50 ?m. Furthermore, a process for manufacturing such an electric cable is disclosed.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: June 23, 2020
    Assignee: PRYSMIAN S.p.A.
    Inventors: Ehsan Fallahmohammadi, Flavio Casiraghi
  • Patent number: 10684433
    Abstract: An optical cable including a load bearing core includes a longitudinally and radially extending slot housing at least one optical fibre, wherein the slot has a width providing a low clearance for the optical fibre(s) housed therein and preventing two optical fibres being stuck to one another; and the slot has a depth equal to or lower than a radius of the core.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: June 16, 2020
    Assignee: PRYSMIAN S.p.A.
    Inventors: Lluis-Ramon Sales Casals, Jean-Pierre Bonicel
  • Publication number: 20200183112
    Abstract: An optical cable comprising an optical core and an external sheath surrounding the optical core, wherein the external sheath comprises an inner layer circumferentially enclosing the optical core and an outer layer circumferentially enclosing the inner layer and comprising at least one longitudinal cavity accessible from outside the external sheath and extending through at least a portion of the outer layer thickness. The inner and outer layers of the external sheath are made of a first material having a first tensile strength, while the cavities in the outer layer are filled with a second material having a second tensile strength lower than the first tensile strength.
    Type: Application
    Filed: July 11, 2017
    Publication date: June 11, 2020
    Applicant: Prysmian S.p.A.
    Inventors: Ralph SUTEHALL, Martin Vincent DAVIES, Ian Dewi LANG
  • Patent number: 10680420
    Abstract: A method for manufacturing an electric cable joint is described. The method includes: a step of providing two electric cables, each cable containing an electric conductor and a thermoplastic insulation system surrounding the electric conductor and containing an inner and an outer thermoplastic semiconducting layers and a thermoplastic insulating layer; a step of joining the terminal portions of the electric conductors of the first and second electric cables to form an electric conductor joint; a step of surrounding the electric conductor joint with a joint inner layer of a thermoplastic semiconducting material having a dynamic storage modulus E?1; a step of surrounding the joint inner layer with a joint insulating layer of a thermoplastic insulating material having a dynamic storage modulus E?2 smaller than E?1; and a step of surrounding the joint insulating layer with a joint outer layer of a thermoplastic semiconducting material having a dynamic storage modulus E?3.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: June 9, 2020
    Assignee: PRYSMIAN S.P.A.
    Inventors: Luigi Caimi, Luigi De Martino
  • Publication number: 20200169074
    Abstract: The present invention relates to a cable termination system comprising: —a power cable sequentially comprising a first length of exposed outer semiconductive layer, a length of exposed insulating layer and a length of exposed electric conductor, —an electric field control element adapted to be arranged around a portion of said power cable, said electric field control element comprising: —first and second longitudinally spaced semiconducting electrodes; —a field grading layer longitudinally extending between the first and second semiconducting electrodes and in electric contact therewith; —an insulating layer surrounding the semiconducting electrodes and the field grading layer, —wherein the first semiconducting electrode is positioned across a first boundary between the first length of exposed outer semiconductive layer and the length of exposed insulating layer, —wherein said second semiconducting electrode (160) is electrically connected with said length of exposed electric conductor (20), —a tubular insula
    Type: Application
    Filed: May 11, 2017
    Publication date: May 28, 2020
    Applicant: PRYSMIAN S.p.A.
    Inventors: Paolo BOFFI, Stefano POGLIANI
  • Publication number: 20200126690
    Abstract: A flame retardant cable for low-voltage applications is disclosed which comprises at least one conductor individually electrically insulated by a layer of polymeric material, a fire-resistant tape containing an inorganic material wrapped around said at least one individually electrically insulated conductor and an multilayered outer sheath having flame-retardant properties which encloses said at least one individually electrically insulated conductor and said fire-resistant tape, wherein said multilayered outer sheath comprises an inner layer and an outer layer, the inner layer being made of a flame-retardant polymeric material having a limiting oxygen index (LOI) higher than the LOI of the flame-retardant polymeric material forming the outer layer of said sheath.
    Type: Application
    Filed: June 29, 2017
    Publication date: April 23, 2020
    Applicant: Prysmian S.p.A.
    Inventors: Zekeriya Sirin, Serdar Buyuk
  • Patent number: 10627589
    Abstract: An optical cable includes an optical module which includes a strength member, a plurality of optical fibers arranged about the strength member, the optical fibers being arranged substantially on a circumference concentric with the strength member, and a retaining element arranged about the plurality of optical fibers.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: April 21, 2020
    Assignee: PRYSMIAN S.p.A.
    Inventors: Ian Dewi Lang, Lee Anthony Spicer, Martin Vincent Davies
  • Publication number: 20200118710
    Abstract: The present invention concerns an electric cable (10; 20) comprising: —an electric conductor (11, 21) surrounded with an electrically insulating layer (12, 22) made from a first polymer composition comprising: (a) polyvinyl chloride as a first polymer matrix, (b) an amount up to 45 phr of a plasticizing system consisting of a phthalate plasticizer and a second plasticizer selected from: dialkyl-adipate, dialkyl-sebacate or dialkyl-azelate, wherein the alkyl group contains from 4 to 10 carbon atoms; the first polymer composition having a limiting oxygen index (LOI) up to 30%; and—an outer sheath (13, 24), surrounding the insulating layer (12, 22), made from a second polymer composition comprising: (i) a halogen-free second polymer matrix; and (ii) a halogen-free inorganic flame-retardant filler in amount suitable to impart flame retardant properties to the outer sheath (13, 24).
    Type: Application
    Filed: June 29, 2017
    Publication date: April 16, 2020
    Applicant: PRYSMIAN S.P.A.
    Inventors: Zekeriya SIRIN, Alaettin SENKAYA, Serdar BUYUK, Ozlem ALBAYRAK
  • Patent number: 10611682
    Abstract: A process for manufacturing an optical fibre unit for air-blown installations includes: providing a deposition chamber for applying particulate material, the deposition chamber having an inlet end and an outlet end and a longitudinal axis; passing through the deposition chamber an optical fibre assembly including at least one optical fibre embedded in an inner layer of cured resin material, and having an outer layer around the inner layer, the outer layer including uncured resin material; injecting a flow of fluid and particle material in the chamber in a direction substantially parallel to the chamber longitudinal axis, at an injection speed of 5 m/s at most; perturbing the flow when in the chamber, thus causing the particle material to impact and partially embed into the outer layer of the optical fibre assembly; and curing the outer layer.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: April 7, 2020
    Assignee: PRYSMIAN S.P.A.
    Inventors: Mark Richard Mason, Ian Dewi Lang
  • Patent number: 10606005
    Abstract: An optical cable includes a plurality of optical fibers sealed within a metal tube, a polymer inner sheath surrounding the metal tube and operatively connected to the metal tube, and an outer sheath disposed over the polymer inner sheath.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: March 31, 2020
    Assignee: Prysmian S.p.A.
    Inventors: Josep Maria Martin Regalado, Josep Oriol Vidal Casanas, Matias Campillo Sanchez, Ester Castillo Lopez
  • Patent number: 10598881
    Abstract: An optical fibre comprising: an optical waveguide comprising a core surrounded by a cladding; a primary coating surrounding the optical waveguide; and a coating, surrounding the primary coating, comprising a polymer material obtained by radiation curing a polymerizable composition, the polymer material having a degree of crystallinity of at most 12. The coating of the optical fiber according to the present invention exhibits enhanced resistance upon exposure to high temperature, preferably a temperature over 250° C., while endowed with required features such as protective capability, elasticity, adhesion to underlying layer and simple manufacturing.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: March 24, 2020
    Assignees: PRYSMIAN S.p.A, POLITECNICO DI MILANO
    Inventors: Lidia Terruzzi, Pamela De Martino, Attilio Citterio
  • Publication number: 20200090834
    Abstract: Armoured cable (10) comprising: —a plurality of cores (12) stranded together according to a core stranding direction; —an armour (16) surrounding the plurality of cores (12) and comprising a layer of metal wires (16a) helically wound around the cores (12) according to an armour winding direction; wherein the at least one of core stranding direction (21) and the armour winding direction (22) is recurrently reversed along the cable length L so that the armoured cable (10) comprises unilay sections (102) along the cable length where the core stranding direction (21) and the armour winding direction (22) are the same. The invention also relates to a method for improving the performances of the armoured cable (10) and to a method for manufacturing the armoured cable (10).
    Type: Application
    Filed: April 21, 2017
    Publication date: March 19, 2020
    Applicant: Prysmian S.p.A.
    Inventors: Paolo MAIOLI, Massimo BECHIS
  • Publication number: 20200088937
    Abstract: An optical fibre comprising: an optical waveguide comprising a glass core surrounded by a glass cladding; a primary coating surrounding the optical waveguide; a secondary coating, surrounding the primary coating, comprising a cured polymer material obtained by curing a curable coating composition comprising: (a) a polyester obtained by esterification of a reactant A selected from carboxylic acids, triglycerides, and mixtures thereof, having a C16-C24 aliphatic chain comprising at least two double bonds spaced by one carbon atom at most, with a reactant B selected from polyols having at least 3 hydroxyl groups, the polyols being thermally stable up to 300° C.; (b) an aromatic glycidyl epoxy resin; (c) an aliphatic polyether hardener containing from 8 to 64 hydroxy groups and/or from 2 to 4 epoxy groups; and (d) a secondary amine compound as curing agent. Preferably, the step of curing is a thermal curing, preferably up to 300° C.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 19, 2020
    Applicants: PRYSMIAN S.p.A., POLITECNICO DI MILANO
    Inventors: Lidia TERRUZZI, Pamela DE MARTINO, Attilio CITTERIO, Massimo GOLA
  • Patent number: 10571510
    Abstract: A partial discharge detecting device includes an electric field sensor including: a first electrode configured to detect by capacitive coupling a partial discharge signal generated by an electrical object and to provide a corresponding first electrical signal, and a second electrode isolated from the first electrode and structured to detect an environmental noise and to provide a corresponding second electrical signal. The detecting device further includes a transmission line structured to propagate an output signal obtained from the electric field sensor toward an external analysis apparatus and an electronic module connected to the first and second electrodes and structured to process the first and second electrical signals and to provide the output signal to the transmission line. The electronic module is structured to decouple the electric field sensor from the transmission line and avoid resonance of the electric field sensor with the transmission line.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: February 25, 2020
    Assignee: PRYSMIAN S.p.A.
    Inventors: Antonio Di Stefano, Roberto Candela, Giuseppe Fiscelli
  • Patent number: 10564368
    Abstract: Optical fiber connector assembly for a fiber optic cable comprising an optical fiber having an end portion terminated with a ferrule and rod members (4). The optical fiber connector assembly comprises: a ferrule holder (110) configured to hold the end portion of the optical fiber (10), the ferrule (30) and the rod members (4); a connector (190) having an internal passageway for housing the ferrule holder (110); a locking member (180) extending lengthwise and having an internal passageway for the end portion of the fiber optic cable (1). There is also disclosed a pre-connectorized fiber optic cable comprising a fiber optic cable and the optical fiber connector assembly mounted upon an end portion of the fiber optic cable.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: February 18, 2020
    Assignee: PRYSMIAN S.p.A.
    Inventors: Ian Griffiths, Matt Kerry, Stephen Pike
  • Patent number: 10559404
    Abstract: It is disclosed a power cable comprising at least one conductor and a hollow tube at least partially filled with a traceable material. The traceable material comprises a tracer associated with a uniquely identifiable code and is in a liquid or gel form. The tracer may comprise one or more of: coded synthetic DNA particles, a fingerprint of one or more trace materials, microdots containing a code written thereon. The tracer may also comprise radio-frequency identification, RFID, tags.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: February 11, 2020
    Assignee: PRYSMIAN S.p.A.
    Inventors: Andreas Neumann, Frank Lübbe
  • Patent number: 10544057
    Abstract: A method of manufacturing a glass core preform for an optical fibre comprising: providing a porous soot core preform having an outer surface) and a central hole extending axially therethrough; dehydrating the porous soot core preform at a first temperature by exposing the outer surface of the preform to an atmosphere containing chlorine, and simultaneously consolidating the soot core preform and closing the central hole at a second temperature higher than the first temperature to form a glass core preform, wherein consolidating and closing comprises sequentially alternating flowing chlorine containing gas into the central hole and reducing the internal pressure of the central hole.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: January 28, 2020
    Assignee: PRYSMIAN S.p.A.
    Inventors: Franco Cocchini, Antonio Adigrat, Valeria Caronna, Marco Antonio Caiata, Antonio Collaro, Antonio Schiaffo