Abstract: A multiple pair cable with individually shielded pairs and that is easy to connect has a circular cross-section and includes a plurality of individually insulated conductor pairs and an electrical shield around each pair. The electrical shields of the various pairs include a central rod with radial fins separating the pairs from each other and partially shielding each pair and a peripheral shield around the rod and all of the pairs between the fins and completing the shielding of each pair.

Abstract: A method of manufacturing an insulative material cellular insulator around a conductor, the insulator having a longitudinal passage in which the conductor is housed and closed cells extending longitudinally and separated from each other by radial walls, includes the following operations: the insulative material in the viscous state is extruded to impart the required shape to it to form the cells, the insulative material shaped in this way is applied to the conductor, and the insulative material is cooled to obtain the insulator. The insulative material is applied to the conductor at a distance from the exit of the shaping device such that the material is drawn down sufficiently for the walls of the cells not to be thinned without pressurizing the cells.

Abstract: The high frequency transmission cable comprises insulated conductors assembled together in bundles which are themselves assembled together in at least one unit, and also comprising an outer sheath for overall protection. It further comprises a dielectric rod that is grooved lengthwise for assembling together the bundles in each unit, the grooves of the rod being open via respective slots and serving to hold individual bundles while keeping them apart from one another. The cable is particularly suitable for use as a computer cable.

Abstract: An asymmetric contact having a first end part for connection to an external conductor and a second end part for elastic coupling with another similar contact. The second end part (4) is offset to one side of the axis of the first end part (1, 2, 3) and to the coupling part (8) between them, and is substantially half the width of the first end part. A terminal strip includes two parallel rows of the contacts facing each other. The contacts are arranged in successive pairs, each pair including first and second type contacts in opposite rows and having their second end parts to the right and left sides, respectively, of a central axis of the first end part and the coupling part. A distance (d1) between the second end parts of each contact in a pair is less than a distance (d2) between the second end parts of adjacent contacts of two different pairs.

Abstract: An easy-strip cable includes individually insulated electrical conductors assembled into sets and a continuous insulative sheath around said sets and separating them into two groups. The sheath is divided into two tubular portions substantially partly open at facing locations along the cable and joined together by two peripheral continuity tongues allowing the sheath to be opened as required. The cable can be used as a high-frequency signal transmission cable.

Abstract: The herringbone harness has multiple branches leading off from a trunk divided into segments by the forks at which the branches start. The harness is exclusively shielded firstly by first braids made over the individual branches, each first braid having a first enlarged tab over at least one of the segments on either side of the branch in question, and secondly by second braids made over the individual segments, each second braid having a second enlarged tab over that adjacent segment which is of smaller diameter than the segment in question. The application is a shielded harness serving multiple points from a common point of origin.

Abstract: A high frequency electric cable including at least one inner electrical conductor comprising a twisted strand of conductive wires, wherein a metal tape is taped with overlap around said strand. The overlapping metal tape is used to provide a low linear attenuation and to provide good mechanical strength.

Abstract: The cable includes a conductive coating layer disposed on an internal dielectric and surrounded by a conductive screen. The cable is characterized in that said conductive coating is a conductive silicone coating and in that the dielectric is treated and therefore has an adapted surface tension value greater than a value typically in current use, therefore directly giving said silicone coating layer a small level of adherence to said treated dielectric and thereby rendering it peelable.Applicable to cables having operating temperatures of the order of 250.degree. C. and high noise immunity.

Abstract: The shielded harness has multiple branches and at least one fork, and has shielding braids over the various branches. The harness includes shielding continuity means over each fork, which means are constituted exclusively by enlarged tabs in the individual shielding braids of the various branches, each enlarged tab extending over the fork and beyond over another branch, and being covered by the shielding braid of said other branch.

Abstract: A pre-equipped shielded harness has at least one end portion formed of a bundle of twisted-together conductors covered by a shielding braid. The harness includes an expander having cross-sectional dimensions substantially identical to those of a rear of a connector to be connected to the end portion. The expander is positioned at the location at which the connector is to be connected, and is covered by the shielding braid by preforming the shielding braid over the expander. The shielded harness has high magnetic protection.

Abstract: One embodiment comprises:two bare parallel conductors made of bronze;two insulating rods that are substantially helically wound with non-touching turns around the conductors respectively so that the rods interfit and maintain a predetermined distance between the two conductors; andan insulating protective sheath.The helical pitch of the rods is much greater than the cross-section of the rods so the volume between the two conductors is mostly full of air, thereby obtaining reduced permittivity and thus increased propagation velocity. The invention is applicable to data transmission cables for computer machines.

Abstract: An electrical cable comprises a central conductor core protected by an intermediate sealing sheath of insulating material. The intermediate sheath is surrounded by armoring and the armoring by an outer sealing sheath of insulating material. The cable includes an electrical joint in its central core. The outer and intermediate sheaths and the armoring are cut and removed over the joint. The cable further comprises an over-molding forming a sleeve around the joint and extending over the outer sheath on either side of the joint. The armoring and the outer sheath are cut and removed over a portion of length greater than the portion over which the intermediate sheath is removed, thereby defining, on either side of the joint, a shoulder and a step between the intermediate sheath and the outer sheath. The over-molding engages snugly over the shoulders and the steps to form a watertight seal therewith.

Abstract: A low loss coaxial cable has a central supporting rod of plastic, covered in metal and forming the inner conductor or core of the coaxial cable. An intermediate insulation made of a dielectric material surrounds the inner conductor and an outer metal conductor surrounds the intermediate insulation. The central rod is made of polytetrafluoroethylene (PTFE) having a relative density greater than or equal to 1.6. The intermediate insulation has a relative density less than 1.2 and the ratio of the density of the dielectric constituting the intermediate insulation divided by the density of the PTFE constituting the rod lies in the range of 0.15 to 0.75.

Abstract: A cable which is easily strippable by a transversely-acting pincer. Its sheath has a cross-section including at least two pairs of ribs delimiting longitudinal grooves which face one another in planes intersecting the inside surface of the sheath, but outside the conductors and the earthing leads of the cable.

Abstract: A laser-markable cable, in particular an optical fiber cable, having an outer protective layer of varnish comprising an outer layer (14) provided with a pigment and sublimable by means of a first type of laser, and an inner underlayer (13) of a contrasting color relative to that of the outer layer. The cable is characterized by the fact that said outer layer (14) is also modifiable in color by a second type of laser without being destroyed in thickness, thereby providing a second possible method of marking.

Abstract: A cable which is easily strippable by a transversely-acting pincer. Its sheath has a cross-section including at least two pairs of ribs delimiting longitudinal grooves which face one another in planes intersecting the inside surface of the sheath, but outside the conductors and the earthing leads of the cable.

Abstract: A flat electric cable having a plurality of parallel conductors spaced apart inside insulation, and provided with screening, wherein at least one of the outer conductors projects partially from the insulation and makes contact with the screening, and the projecting outer conductor is wider than the other conductors.

Abstract: A multi-conductor screened electric cable in which each conductor may be connected in parallel to an elelctrical contact without having to break the cable. Such connections are made in predetermined zones of the cable. All of the conductors of the predetermined zones are parallel and lie in a plane. In addition to its insulated conductors, the cable includes an uninsulated conductor element (5) providing electrical continuity for its screening (6), and also making it possible to make an electrical contact with the screening. The insulated conductors (3, 4) and the uninsulated conductor element (8) are disposed at predetermined accurate distances relative to one another. The cable is particularly suitable for computer networks.

Abstract: A method of manufacturing a flexible electric cable constituted by a polymer-coated stranded conductor made up of fine strands of aluminum or aluminum alloy having a diameter of less than 0.5 mm, or constituted by one or more insulated conductors surrounded by an electric screen itself constituted by fine strands of aluminum or aluminum alloy having a diameter of less than 0.5 mm and wrapped or braided about the conductor(s). The screen is surrounded by at least one insulating layer of polymer material, wherein the operation of stranding together the fine strands forming the conductor or of wrapping or braiding the strands surrounding the insulated conductor(s) and forming the electric screen is performed by using fine strands which are not annealed or which are only partially annealed, with the stranded conductor or the wrapped or braided electric screen then being covered with insulation and subjected to at least one final annealing operation.

Abstract: A laser beam markable electric cable comprising an outer layer (13) enabling such marking to be performed, wherein said outer layer (13) is of a contrasting color relative to the color of an underlayer (14) which is absorbent at the laser beam wavelength. Said outer layer (13) is a thin layer which, during marking, is destroyed through its entire thickness by the laser beam (10) so as to reveal the underlayer (14).