Abstract: Device protecting a coaxial cable against high-powered low-frequency spurious pulses. A lightweight, compact device comprising a microstrip T-junction (5) folded back in the shape of an E on a substrate (6) integral to a single ground plate (7), with the branches of the E between the center point A and the coaxial plugs (1, 2) forming a quarter wavelength, as does the center horizontal branch of the E between points A and B. According to one of the variants, two microstrips arranged in parallel and separated by a dielectric substrate establish a quarter-wave trap. Application to microstrip resonant circuits.

Abstract: A device for reinforcing the butt weld (5) of two optical fibres (1,2) in a telecommunications cable. The ends of the fibres are stripped. Said device comprises a metal capillary tube (6) which extends on either side of these ends along some length of the sheaths of the fibres. The capillary tube is made of a metal of high mechanical strength and surrounds the sheaths with little clearance. The remaining space (7,8) between the capillary tube and the stripped ends of the fibres and between the capillary tube and the sheaths of the fibres is filled with a slow-setting adhesive which is very fluid when in the liquid state and which sets in the absence of air.

Abstract: A system for transporting heavy cylindrical objects such as cable drums or spools on a carriage guided along a pit dug in the floor includes a channel rail (2) lining the bottom and sides of the pit, a central upstanding rail (3) leaving a longitudinal gap between itself and the channel rail and having a plane top surface (3A) level with the ground. Two longitudinal girders (4A, 4B) integral with the carriage fit into the longitudinal gaps, and the carriage is raised and lowered the longitudinal girders so that they have a high position above floor level for holding a cylindrical object.

Abstract: A coiling-down tank (1) comprises a circular outer wall (3) delimiting a coiling-down zone, and cable (4) to be coiled down (e.g. heavy electric cable) is delivered to the machine (10) from a point (80) vertically above the center of the tank. The machine comprises an upper support bracket (70) mounted to rotate about the vertical axis of the tank, a sloping coiling-down arm (20) connected at its upper end to said bracket and supported at its lower end by running means disposed to run along the said wall (3) of the tank (1). The arm is fitted with a carriage (30) that is longitudinally displaceable along the arm, and an inlet chute (60) receives cable from the point (80). The inlet chute guides the cable into the carriage, and the lower end of the carriage serves to dispense the cable into the tank for coiling down.

Abstract: A sealed connection between an undersea coaxial line cable and a length of coaxial access cable connected to a repeater; the line cable comprising an axial conductor (11), insulation (12), a return path (13) and an outer sheath (14A); the access cable comprising an axial conductor (15), insulation, metal braiding (20A, B) forming a return path, and an outer sheath (14B); and the connection comprising a conical conductive metal connection part (16) for inter-connecting the axial conductors, a surface moulded layer of insulating thermoplastic material (17), a conductive connector (18) for interconnecting the return paths of the line cable and the access cable, and a reconstituted sheathing between the line cable and the access cable, wherein said conductive connector for inter-connecting the return paths comprises an aluminum flared tube fitted tightly over the surface-moulded insulation, with a layer of graft polyolefin or adhesive ionomer tape wound helically around the surface moulding being sandwiched in be

Abstract: A junction for joining the ends of two under water optical fiber cables, each cable comprising an optical core (1, 1') inside a protective arch of helically wound steel wires (2, 2'), with a copper tube (3, 3') swaged down on the arch, and an insulating outer sheath (4, 4') covering the copper tube, then a return conductor (14, 14') of aluminum, and an outer insulating protective covering (16, 16'). The junction comprises two cable-receiving end portions (8, 8') for receiving respective ends of the two cables to be joined, and a central portion (5, 6) for interconnecting said end portions. The end portions provide mechanical connection to their respective cable ends and are themselves mechanically interconnected by an outer metal tube (6). The optical fibers (22) are stripped to leave a considerable amount of slack. They are inserted into the ends of a mandrel (5) and then threaded out through holes near its ends for end to end joining with corresponding fibers in the other cable.

Abstract: The invention relates to a haulage machine for hauling an elongate cylindrical unit (e.g. a cable) along a conduit or duct (3), said machine having a winch (11) on which a haulage rope (9) is wound, said haulage rope being hitched to the cylindrical unit (7) by a haulage head (8); one or more independant auxiliary haulage devices (1) are disposed at points (2) of access to the duct, each auxiliary device having drive rollers (6, 6'). The haulage head (8) is connected to signal to a regulator device (15) (e.g. via conductor wires contained in the haulage rope (9), to indicate the haulage force it is applying and each auxiliary haulage device (1) has a variable discharge rate pump (4) which controls a hydraulic motor (5) whose output shaft rotates the drive rollers via clutches.

Abstract: A method of sequentially annealing and then hardening long metal components (1,2,3,4) made of fine or special steel with an austenitic structure, said method including at least one annealing operation by supplying heat from the outside in a reducing or neutral atmosphere and one quenching operation by contact with a flow of cooling fluid and an apparatus for putting said method into practice.The flow rate and the temperature of the cooling fluid are adjusted so that the components undergo no transformation of their austenitic structure during hardening.Application to annealing and hardening armoured electric components with conductor cores, inorganic insulant coatings and outer sheaths made of austenitic steel.

Abstract: A splice for splicing together the steel armor wires (3, 3') of two armored electric cable ends (1, 1') after the remainder of the cable has been spliced, and in which the end of each armor wire of one of the cable ends is joined to the end of a corresponding armor wire of the other cable end by means of a sleeve (4). Each sleeve comprises a right-and-left screw link into which correspondingly right hand and left hand threaded armor wires ends are screwed. The cable may be a submarine cable for transporting electrical power.

Abstract: A method of manufacturing electric cable having compressed mineral insulation and a titanium sheath and at least one titanium inner conductor, said method including preparing a titanium sheath preform whose diameter is very much greater than that of the cable, then lengtening the preform by successive hammering and/or laminating operations between which the preform is annealed, wherein the titanium used contains not more than: 0.03% nitrogen; 0.25% oxygen; 0.015% hydrogen; 0.10% carbon and 0.30% iron; wherein its tensile strength is not more than 5.40 N/mm.sup.2 wherein its breaking strain is at least 22%, and wherein annealing operations are performed in a rare gas atmosphere at a temperature lying between 600.degree. C. and 640.degree. C.

Abstract: A device for connecting together the outer conductors of two coaxial pairs with coaxial conductors (3) and outer conductors (4), said device including two metal half-shells (11) with chamfered ends (10) which are provided with longitudinal slots, said half-shells being disposed between the ends of the outer conductors, a sleeve (6) which covers said half-shells and one of whose ends is provided with a tapping (7), and a clamping screw 8 which is screwed onto the end of the sleeve so that by means of a conical ring (9), it clamps one end of each half-shell. The inside of the other end of the sleeve is machined to give it a frusto-conical profile (19) whose conical shape matches that of the corresponding ends (20) of the half-shells. Application to connecting two lengths of coaxial cable or one coaxial cable to the coaxial lead of a repeater.

Abstract: A housing for a coaxial directional coupler has a channel-section body (20), each of the flanges of said channel-section body having two openings (2) with the opening in each flange being opposite to the corresponding opening in the other flange. A cover (5) is capable of closing the open space between the rims of said housing body flanges, as well as two end pieces (8) for closing the ends of the assembly formed by the channel-section body of the housing (20) and the cover (5). The invention is used in strip lines, insertion boxes, attenuators, housings for micro-electronic equipement, hybrid circuits and the like.

Abstract: A device for preventing damage to a submarine cable at the point where it leaves an equipment casing during passage round the cable drum and over the davit, and consisting of a chocking member (5) on each side of the casing (2) surrounding the cable (1) from its outlet from the casing to a point of contact of the cable with the drum (3), said chocking member being in the form of a body of revolution about the cable axis of generally pear-shaped configuration when unstressed and having a swollen part (6) at the casing end, said chocking member occupying all the space between the cable (1) and the drum (3) when the cable is wound on the drum, the swollen part of the chocking member when unstressed having a radius at least equal to the distance (d) between the cable and the drum at the outlet from the casing. The chocking member may be a sleeve of a strong and flexible material; it may also consist of a stack of elementary chocking members.

Abstract: An apparatus for protecting a low-tension electric line (31) against disturbances with very steep slopes, said apparatus having a box (9) with a plurality of compartments (10, 15, 22, 26) in series which is equipped with limiter units such as dischargers and is disposed upstream from the line which is to be protected.It includes upstream from the box an electric conductor (3) of appreciable length surrounded by a metal tube (4) which is closed at its ends by insulating windows (5, 6) and separated from said metal tube by a solid or gaseous insulant (7).Application to the protection of electric power lines against disturbances due to powerful nuclear explosions.

Abstract: A method of sequentially annealing and then hardening long metal components (1,2,3,4) made of fine or special steel with an austenitic structure, said method including at least one annealing operation by supplying heat from the outside in a reducing or neutral atmosphere and one quenching operation by contact with a flow of cooling fluid and an apparatus for putting said method into practice.The flow rate and the temperature of the cooling fluid are adjusted so that the components undergo no transformation of their austenitic structure during hardening.Application to annealing and hardening armoured electric components with conductor cores, inorganic insulant coatings and outer sheaths made of austenitic steel.

Abstract: The quad guide device (18) receives quads (11) made on a first stranding assembly and guides them into a laying former (8) placed a head of a second stranding assembly. The guide device includes a distributor die (6) for distributing quads (11) at the output of the first stranding assembly and intermediate guide means (7) placed between the strand distributor die and the laying former. In said device, said guide means separate outer quads (11A) from inner quads (11B).

Abstract: Conventional attenuators and matched loads for dissipating power at hyperfrequencies are uniform structures giving constant attenuation per unit length. This results in most power being dissipated at an input end. The present invention increases the maximum total power that such a resistance can dissipate by providing a non-uniform structure in which dissipation per unit length increases when going away from an input end, in such a manner that power is dissipated in a substantially uniform manner throughout the structure. A series resistance (3) between two parallel resistances (4 and 5) are in the shape of a sector of a circle.

Abstract: A multiple connection for connecting a plurality of armored cables (1, 2) to the housing of electrical apparatus in an undersea system having a cable interconnection point where a plurality of cables serving different destinations are brought together, each of said cables comprising a core surrounded by armor and being terminated by a length of bared core extending beyond a severed end of the armor, and said housing having a hollow cable-fixing part through which the bared cable cores pass, characterized in that said connection comprises:a steel binding ring (12) through which the armored portion of each of said cables (1, 2), is threaded, said ring serving to bind said armored portions of cable together;a steel tube (13) threaded over said bared cores (7, 8) of said cables, having one end abutting against severed end portions of the armor (9, 10) of said cables and having its other end fixed mechanically to said hollow cable-fixing part (5) of the electrical apparatus housing;and auxiliary armor (14) wound a

Abstract: An electromechanical cable capable of withstanding high pressures and temperatures of at least 200.degree. C., the cable comprising a core having a plurality of insulated conductors (3,5) covered with a conductive filler (7) which fills the voids between the conductors, the core being surrounded by a layer of conductive textile material (8) and by at least one layer of helically wound metal armor wire (9,10). The filler is a composite material comprising a silicone polymer with a semiconductor charge of carbon black.

Abstract: A semiconductor packing substance for an undersea cable transporting electrical power, said cable having a core made of conductors 1 disposed axially, surrounded by a polyethylene layer 3 which is made semiconductive, then by a layer of insulating polyethylene (4). The packing substance is obtained by reticulating liquid nitrile rubber with carboxylic bonds and an epoxy resin to both of which is added a carbon black with a specific surface area at least equal to 100 m.sup.2 /g, an anti-oxidizing agent and a reticulation accelerator.