Prysmian S.p.a.

Prysmian Cavi E Sistemi Energia S.r.l.

Enrico Maria Consonni

Alessandro Ginocchio

Massimo Pizzorno

Luca Giorgio Maria De Rai

Davide Ceschiat

Davide Sarchi

Paolo Veggetti

Mauro Maritano

Marco Ruzzier

Gianni Miramonti

Paolo Arturo Presa

Franco Cocchini

Giovanni Pozzati

Luigi Caimi

Antonio Adigrat

Arnaud Le Dissez

Antonio Collaro

Silvio Frigerio

Francesco Sartori

Luca Giorgio De Rai

Martino Travagnin

Roberto Gaspari

Bernd Knuepfer

Luigi De Martino

Thomas Kittel

Alexis Debut

Carsten Kemnitz

Reiner Ewald

Arnd-Guenther Carl

Daniele Cuomo

Dario Bazzoli

Federico Cordo′

Fabio D'esposito

Alessandro Trolli

Florent Etienne Philippe Pelle

Fulvio Loro

Flavio Tridello

Florent Etienne Pelle

Agusti Valls Prats

Joint assembly for a first and a second power cables each comprising at least one optical fiber cable at a radial position different in the first and second power cables, the joint assembly comprising a two-halved inner shell and a two-halved outer shell extending along a longitudinal axis, wherein the two-halved inner shell is adapted to be arranged around a metallic layer of one of the first and second power cables, and the two-halved outer shell is adapted to be arranged around the two-halved inner shell.

Joint assembly for power cables having an optical fiber cable embedded at different radial positions, joint system and method for installing such a joint assembly

The present disclosure relates to a cable comprising a cable core and an armor, the armor being formed by a plurality of consecutive sections of non-metallic tensile elements wound around the cable core, each section including a first non-metallic tensile element connected to a second non-metallic tensile element of the consecutive sections by a joint comprising a first socket and a second socket, each of said sockets comprising a flat body extending longitudinally along a longitudinal axis (S) between a proximal end and a distal end and comprising an inner through bore between a proximal aperture at the proximal end and a distal aperture at the distal end, the first and second non-metallic tensile elements having an end portion being housed in the inner through bore of respectively the first and second socket by the proximal aperture and secured therein by a bonding material, and each inner through bore being shaped to translationally and rotationally lock the bonding material; an interconnecting device translationally and rotationally locked in the distal apertures of the first and the second sockets and allowing the sockets to relatively rotate exclusively around at least one rotation axis (R) perpendicular to a plane where the socket body longitudinal axes (S) of the first and the second sockets lie.

Cable with joints for the connection of cable armour non-metallic elements

A cable has a tensile armor having a number of elongated polymeric tensile elements. At least one of the elongated polymeric tensile elements includes a bundle of high tensile fibers and a jacket tightly retaining the bundle of fibers. The elongated polymeric tensile elements are arranged with a lay loss of 1.5% at most. A method of manufacturing such a cable is also disclosed.

Cable with lightweight tensile elements

In one example, an apparatus for jointing power cables includes a mold extending along a longitudinal axis, and having a feeding inlet and being made of two halves forming a longitudinal pass-through seat for receiving the cables. An extruder is connected to the feeding inlet. A heating system and a cooling system is associated with the mold. A measuring system for detecting temperature or pressure includes a plurality of probes for detecting temperature or pressure.

Process for jointing cables

An optical cable for communication includes at least one retaining element blocked with respect to the water propagation as well as a process for manufacturing such an optical cable. The optical cable includes, in addition to the retaining element, at least two transmission elements housed within the retaining element and a water swellable yarn housed within the retaining element. The water swellable yarn is selected according to the following equation:  in which Vis the volume of the water swellable yarn after swelling upon contact with water; Vis the total free volume in the retaining element; k is a constant&#x2267;180; R is a constant&#x2267;1.4; and Vis the free volume per each transmission element. Advantageously, the optical cable is water-blocked and the water swellable yarn does not induce microbending effects on the transmission elements.

Water-blocked optical cable and process for the production thereof

It is disclosed an optical cable for communications including at least one micromodule, the micromodule including a retaining element and number N of optical fibers housed in said retaining element. The diameter of a circumference encircling the number N of optical fibers is typically 90% to 95% of an inner diameter of the retaining element. The retaining element consists essentially of a film grade polymeric material having an elongation at break equal to or higher than 500%, a melt flow index (MFI) lower than 3 g/10 min, and a density lower than 1 g/cm.

Optical cable for communication and process for the manufacturing thereof

A microbundle optical cable such as, a riser cable, includes an outer jacket and a plurality of microbundles housed in the outer jacket. At least one of the microbundles includes an optical fiber ribbon enclosed in a microbundle coating. The at least one microbundle includes a longitudinal axis and a cross-section taken on a plane substantially perpendicular to the longitudinal axis. The cross-section may include a first dimension and a second dimension. The first dimension is higher than the second dimension. Therefore, the cross-section shape is an elongated cross shape.

Microbundle optical cable

A fire resistant optical cable includes: a plurality of optical fibers; at least one tubular layer of a ceramifiable material surrounding the plurality of optical fibers; and at least one flame shielding layer surrounding the tubular layer. The tubular layer of the ceramifiable material is able to mechanically protect the optical fibers not only during heating but also when the fire is extinguished, since it forms a sufficiently robust layer to withstand the mechanical stresses caused by the collapsing of the materials still surrounding the cable, especially in the transition portions between hot and cold zones. The tubular layer of the ceramifiable material is protected by means of at least one flame shielding layer which prevents the flames from directly acting on the ceramifiable material.

Fire resistant optical cable

An electric cable includes a strain sensor longitudinally extending along the cable and including a strain optical fiber arranged within a bending neutral region surrounding and including a bending neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements, at least one of the at least two longitudinal structural elements being a core including an electrical conductor, wherein the strain sensor is embedded in a strain-transferring filler mechanically coupling at least one of the at least two longitudinal structural elements with the strain sensor. With the disclosed cable construction, the strain experienced by the at least one of the at least two longitudinal structural elements is transferred to the strain sensor at least in a strained condition. In the preferred embodiments, the electric cable is a heavy-duty cable.

Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable

A telecommunication cable is equipped with at least one optical fiber coated by a tight buffer layer made from a polymeric material having an ultimate elongation equal to or lower than 100% and an ultimate tensile strength equal to or lower than 10 MPa. The above combination of features of the polymeric material forming the buffer layer provides an optical fiber which is effectively protected during installation operations and during use, and at the same time can be easily stripped by an installer without using any stripping tools, simply by applying a small pressure with his fingertips and a moderate tearing force along the fiber axis.

Telecommunication cable equipped with tight-buffered optical fibers

A bend-insensitive optical cable for transmitting optical signals includes an optical cable having a length, extending from an input end adapted to receive the optical signals, to an output end and including at least one single-mode optical fiber having a cable cut-off wavelength, of 1290 nm to 1650 nm. The at least one optical fiber is helically twisted around a longitudinal axis with a twisting pitch, for a twisted length, extending along at least a portion of the length, of the optical cable, wherein the twisted length and the twisting pitch are selected such that the optical cable exhibits a measured cut-off wavelength equal to or lower than 1260 nm. Preferably, the at least one fiber has a mode-field diameter of 8.6 &#x3bc;m to 9.5 &#x3bc;m. According to a preferred embodiment, the optical cable includes two optical fibers twisted together along the longitudinal axis, each of the two optical fibers having a cable cut-off wavelength of 1290 nm to 1650 nm.

Bend-insensitive optical cable

Telecommunication cable comprising at least one microstructured optical fiber comprising a core region and a cladding region surrounding the core region, the cladding region comprising an annular void-containing region comprised of randomly arranged voids, the core region including doped silica to provide a positive refractive index relative to pure silica; and at least one protecting layer provided around said optical fiber, the protecting layer being made of a polymeric material having a low ultimate elongation.

Telecommunication cable equipped with microstructured optical fibres

A buffered optical fiber includes an optical waveguide, at least one exterior coating surrounding the optical waveguide and a buffer coating surrounding the at least one exterior coating, wherein the buffer coating is a tight buffer coating made of a material having a density of at least about 1.2 Kg/dm, a thermal conductivity of at least about 0.4 W/m&#xb7;K and includes a polymeric matrix and an inorganic filler.

Buffered optical fibre and method for improving the lifetime thereof

An optical cable for communication includes at least one retaining element blocked with respect to the water propagation as well as a process for manufacturing such an optical cable. The optical cable includes, in addition to the retaining element, at least two transmission elements housed within the retaining element and a water swellable yarn housed within the retaining element. The water swellable yarn is selected according to the following equation: in which Vis the volume of the water swellable yarn after swelling upon contact with water; Vis the total free volume in the retaining element; k is a constant &#x2267;180; R is a constant &#x2267;1.4; and Vis the free volume per each transmission element. Advantageously, the optical cable is water-blocked and the water swellable yarn does not induce microbending effects on the transmission elements.

Growing community of inventors

Milan, Italy

Enrico Maria Consonni