Abstract: An optical fiber cable production method includes: feeding a core including optical fibers; winding a reinforcing wrap around the core and forming an overlapping portion in which end portions of the reinforcing wrap overlap each other at a portion of the reinforcing wrap in a circumferential direction; and performing extrusion molding of a sheath on an outside of the reinforcing wrap. The overlapping portion extends in a longitudinal direction of the optical fibers. In the performing extrusion molding, a resin that forms the sheath is inserted into a portion of the overlapping portion.

Abstract: An electrically insulated cable that is excellent in in adhesion with a resin used for resin sealing is provided. According to the present invention, an electrically insulated cable (10) includes: a plurality of coated electric wires (11) and a sheath (12) covering outer peripheries of the plurality of coated electric wires, wherein an average value of surface roughness Rz of an outer surface of the sheath is 15 ?m or more and 75 ?m or less.

Abstract: A communications cable has a plurality of twisted pairs of insulated conductors, metal foil tape between the twisted pairs, and a cable jacket are disclosed. The metal foil tape can include a substrate, a metal layer on the substrate, and a triboelectric coating on at least the metal layer of the metal foil tape. The triboelectric coating has a charge affinity closer to a charge affinity of the insulated conductors than a charge affinity of the metal layer to prevent charge build up between the conductors and the metal foil tape.

Abstract: A cable for operating a gradient coil of a magnetic resonance apparatus, a magnetic resonance apparatus, and a method for manufacturing a cable for operating a gradient coil of a magnetic resonance apparatus are provided. The cable includes at least one electric conductor and a stabilizing sheathing that surrounds the at least one electric conductor at least partially.

Abstract: An electrical cable includes a conductor assembly having a first conductor, a second conductor and an insulator surrounding the first conductor and the second conductor. The insulator has an outer surface and extends along a longitudinal axis for a length of the electrical cable. The conductor assembly has a coating layer on the outer surface of the insulator being conductive defining an inner electrical shield of the electrical cable. A cable shield is wrapped around the conductor assembly and has an inner edge and an outer edge. The outer edge is wrapped over the inner edge to form a flap covering the inner edge and extending along the longitudinal axis. The cable shield engages the inner electrical shield and forms an outer electrical shield exterior of the inner electrical shield.

Abstract: A cable intended for use in a nuclear environment includes one or more conductors, a longitudinally applied corrugated shield surrounding the one or more conductors, and a cross-linked polyolefin jacket layer surrounding the longitudinally applied corrugated shield. The cable conducts about 5,000 volts to about 68,000 volts in use and is radiation resistant and heat resistant. The cable comprises a life span of about 40 years or more when measured in accordance with IEEE 323. Methods for making a cable and a nuclear reactor utilizing such a cable are also provided.

Abstract: A coaxial cable is configured so that adhesion between an insulating layer and a shield layer can be improved without addition of an adhesive component and roughening of an adhesive surface. The coaxial cable includes a center conductor, the insulating layer covering the outer periphery of the center conductor, the shield layer covering the outer periphery of the insulating layer, and a sheath covering the outer periphery of the shield layer. An anchor layer containing resin whose glass-transition point is equal to or lower than 15° C. is provided between the insulating layer and the shield layer.

Abstract: The present disclosure relates to a composite cable, which comprises a first wire assembly and a second wire assembly, and each wire of the second wire assembly is surrounded by an insulating layer. The composite cable further comprises: a sheath made of insulating material and configured to enclose the first wire assembly and the second wire assembly; and a shield comprising different kinds of metal wires and configured to surround the first wire assembly, wherein the first wire assembly is capable of transmitting signals, and the second wire assembly is capable of transmitting power supply. The composite cable according to the present disclosure is excellent in shielding performance for different requirements.

Abstract: The present invention relates to a method for the production of a cladding for elongated material (2), in particular a sheath for cable sets. In this method, an adhesive tape (3, 4) consisting of a carrier (4) and a first adhesive coating (3) which substantially fully covers the front side of the carrier (4) is combined with an adhesive-free carrier tape (5) such as to form a laminate (3, 4, 5). This is carried out such that the adhesive tape (3, 4) is applied to the carrier tape (5) with its first adhesive coating (3) in such a way that a first projection (Ü1) is defined along at least one of the two longitudinal edges of said adhesive tape. According to the invention, the carrier (4) of the adhesive tape (3, 4) is additionally provided with a further second adhesive coating (7) substantially in parts of its rear side.

Abstract: An electrical connector system having rubber molded single pin high power conductors, for both the male and female electrical connectors positioned on the ends of high power electric connection cables. Configuration of both the male and female connectors enhances shielding at the connection point of conductors at distal ends of the electric when mating in an electric connection. The shielded connections limit electronic noise from RF or EMF which may be transmitted to equipment proximate to a shielded connection.

Abstract: A horizontal automatic tension taping machine comprises a swing rod buffering tension pay-off rack (1), and the swing rod buffering tension pay-off rack (1), a tension balancing wheel (2), a taping machine (3), a ground wire pay-off machine (4), a next taping machine (5), an oven (6), a next ground wire pay-off machine (7), a next taping machine (8), a next oven (9), a crawler take-up machine (10) and an axial row type wire-winding machine (11) are orderly butted. All the parts (1-11) are connected with, a control cabinet (12).

Abstract: A fiber optic cable which comprises at least one subassembly. Each subassembly comprises 1 to 12 optical fibers, a plurality of yarn strength members free halogens, and a first jacket free of any halogens and having a thickness of between about 0.254 to about 0.305 mm. The first jacket surrounds and completely encases the 1 to 12 optical fibers and the plurality of yarn strength members to form the subassembly. The first jacket is manufactured from a material which has a limiting oxygen index (LOI) of at least 40 and a shrinkage of the first jacket being no greater than about 3.5%. The fiber optic cable has a crush resistance of at least 35N/cm, allows less than a 0.4 db/km increase of optical attenuation from ?20 to 70 C and meets requirements according to each of IEC 60332-3-24 (Flame Spread), IEC 61034-2 (Low smoke), and IEC 60754-1&2 (non-Halogen); and the fiber optic cable has a flexural modulus of about 40,000 psi.

Abstract: A microwave cable (10), intended for a frequency range from 0 Hz up to at least a few 10 GHz, comprises a central inner conductor (11), a dielectric (12) concentrically surrounding the inner conductor, an outer conductor (13, 14) concentrically enclosing the dielectric (12), and a sheathing concentrically enclosing the microwave cable (10) externally. Stable electrical and mechanical properties, particularly when making up cables, are achieved in that the outer conductor has two electrically conducting bands (13, 14) wound over each other, in that the bands (13, 14) are each wound in an overlapping manner and in that the bands (13, 14) are wound progressively in opposite directions.

Abstract: A noise suppression cable includes an insulated wire, an internal magnetic tape layer including a resin layer and a magnetic material layer formed on one surface of the resin layer, the internal magnetic tape layer being spirally wound on a periphery of the insulated wire in a first direction along a longitudinal direction of the cable so as to allow the magnetic material layer of the internal magnetic tape layer to face outside, and an external magnetic tape layer including a resin layer and a magnetic material layer formed on one surface of the resin layer, the external magnetic tape layer being spirally wound on a periphery of the internal magnetic tape layer in a second direction different from the first direction along the longitudinal direction of the cable so as to allow the magnetic material layer of the external magnetic tape layer to face inside.

Abstract: A composite cable includes an electric cable consisting of two unshielded power wires, each of which includes a center conductor covered with an insulation, the electric cable being configured to be connected to an electric parking brake mechanism for preventing rotation of wheels after stopping a vehicle, a sensor cable consisting of two unshielded signal wires, each of which includes a center conductor covered with an insulation, the sensor cable being configured to be connected to an ABS sensor for measuring a rotation speed of the wheels during running of the vehicle, and a common outer sheath collectively covering the electric cable and the sensor cable. The two unshielded signal wires contact with each other.

Abstract: A sheathing member mounting apparatus is provided with a support mechanism that supports a sheet member from the side of a protective layer, electric wire holding mechanisms that hold an electric wire portion in a state of being disposed along a bonding layer of the sheet member, and a folding mechanism that folds the sheet member in two. A second region supported by a second support portion is pivoted toward a first support portion, whereby the electric wire portion of a wire harness is sandwiched in the folded sheet member to be covered.

Abstract: An exterior member attaching device for attaching a sheet member to an electric wire of a wire harness, the sheet member being formed into a long sheet shape having an adhesive surface at one side and an exterior surface at the other side, includes a sheet member feeding portion that feeds the sheet member along a longitudinal direction of the sheet member while bending the sheet member so that the adhesive surface becomes inner side, a guiding portion that guides the sheet member fed from the sheet member feeding portion, an electric wire holding portion that holds the electric wire along the adhesive surface of the sheet member fed to the guiding portion, and a pressure applying portion that bends the sheet member into a folio and passes and pressurizes the sheet member which sandwiches the electric wire disposed along the adhesive surface.

Abstract: A method for producing a wire harness includes hot pressing a first portion including an edge portion of a nonwoven material, and curing the first portion of the nonwoven material, and thereafter partially overlapping the first portion and a second portion that is softer than the first portion and is the portion of the nonwoven material other than the first portion so that a wire bundle is covered by the first portion and the second portion.

Abstract: A wire harness has a wire bundle and a covering member formed of a hot-pressed nonwoven member and covering the wire bundle. The covering member has a plurality of first portions extending in an extending direction of the wire bundle and at least one second portion extending in the extending direction of the wire bundle and being softer than the plurality of first portions. The first portions and the second portion of the covering member are provided alternately in a circumferential direction of the wire bundle. The covering member is bent at the at least one second portion in the circumferential direction of the wire bundle.

Abstract: A method and apparatus for a tray, a folding section connected to the tray, and a tape application system. The tray has a channel for receiving an elongate insert for a composite material with a number of layers for a release system. The folding section is capable of folding a number of layers around the elongate insert to cover the elongate insert as the elongate insert is moved through the folding unit. The tape application system is capable of applying a tape to the number of layers for covering the elongate insert to form the release system.

Abstract: A method for thermally welding an adhesive tape to a polymeric substrate wherein the backing of the adhesive tape enters into a cured physical connection with the polymeric substrate is disclosed. The adhesive tape is comprises a spunbonded backing that is coated, at least partially, on one side with a pressure sensitive adhesive, preferably natural rubber or acrylate. The spunbonded backing can comprise polyester or polypropylene fibers that do not melt during the welding process, and may optionally include additives such as pigments, UV stabilizers and flame retardants.

Abstract: A method and apparatus for a tray, a folding section connected to the tray, and a tape application system. The tray has a channel for receiving an elongate insert for a composite material with a number of layers for a release system. The folding section is capable of folding a number of layers around the elongate insert to cover the elongate insert as the elongate insert is moved through the folding unit. The tape application system is capable of applying a tape to the number of layers for covering the elongate insert to form the release system.

Abstract: A device for making a shielded electrical wire comprising a first folding die that folds a first and second edge of a shield tape in an opposite direction from the central portion of the shield tape, a second folding die that wraps the shield tape around the insulated conductors and folds the first edge back over onto the central portion of the shield tape to form a receiving area, a third folding die that tightens the shield tape around the plurality of conductors while positioning the receiving area to receive a drain wire, a wire guide that installs a drain wire in the receiving area, and a closing die that closes the shield tape around the plurality of conductors and the drain wire to form an enclosure around the plurality of conductors with the second edge overlapping the receiving area at an outside surface of the enclosure, in order to better define the claimed invention.

Abstract: Coaxial cable shielding. In one example embodiment, a coaxial cable includes a center conductor, a dielectric, a tape, and a jacket. The tape defines first and second edge portions that each borders an interior portion. The thickness of the first edge portion is less than the thickness of the interior portion. The dielectric surrounds the center conductor. The tape is wrapped around the dielectric such that the first edge portion overlaps with the second edge portion. The jacket surrounds the tape.

Abstract: A tray 15 for a dry etching apparatus 1 has substrate accommodation holes 19A to 19D penetrating thickness direction and a substrate support portion 21 supporting an outer peripheral edge portion of a lower surface 2a of a substrate 2. A dielectric plate 23 has a tray support surface 28 supporting a lower surface of the tray 15, substrate placement portions 29A through 29D inserted from a lower surface side of the tray 15 into the substrate accommodation holes 19A through 19D and having a substrate placement surface 31 at its upper end surface for placing the substrate 2. A dc voltage applying mechanism 43 applies a dc voltage to an electrostatic attraction electrode 40. A heat conduction gas supply mechanism 45 supplies a heat conduction gas between the substrate 2 and substrate placement surface 31. The substrate 2 can be retained on the substrate placement surface 31 with high degree of adhesion.

Abstract: A cable is installed in coiled tubing for use in. downhole wells; the cable having an expandable jacket (22) extruded around it. After being installed in the coiled tubing, and the expandable jacket is caused to expand, securing the cable in the coiled tubing. The expandable jacket is caused to expand by the application of heat or by the application of a liquid hydrocarbon. The expandable jacket may be discontinuous along the length of the power cable, discontinuous portions being provided by interspersing the expandable jacket with sections non-expandable material.

Abstract: A shielded electrical wire and device and method for making the same is disclosed.

Abstract: A method of continuously forming heated conduit includes performing a tape for winding onto a spiral pipeline former. At least one conductor is positioned adjacent to the centreline of and parallel with a thin polymer ribbon. The ribbon is folded in half to encapsulate the conductors. The folded ribbon is thermally welded to itself. The folded, welded, ribbon is passed through a creaser, which forms a crease midway across the folded ribbon. The creased pre-formed ribbon is formed into a conduit in a continuous process on a spiral pipeline former.

Abstract: A process for manufacturing a cable includes the steps of conveying at least one conductor to an extruder apparatus; extruding an insulating coating layer radially external to the at least one conductor; longitudinally folding a metal tape around the extruded insulating coating layer, the metal tape bearing at least one adhesive coating layer in a radially external position; and extruding at least one continuous coating layer of at least one polyamide or a copolymer thereof around and in contact with the folded metal tape. The step of extruding the at least continuous coating layer is carried out at a draw down ratio not higher than 2.5, preferably, 1.2 to 2.0.

Abstract: The invention relates to a method of continuously fabricating a coaxial cable in which ring-shaped corrugations are imparted to a conductor of the cable in a corrugator. The corrugator is made to operate at constant speed.

Abstract: The printed web of paper, from which label booklets are formed, is provided in a punching unit with punch cuts, which form at least one row of punched areas and non-punched areas, wherein the punched areas remain joined to the non-punched areas respectively along a line running in the transverse direction of the web of paper. In the folding unit each punched area is deflected out of the plane of the web of paper by a blast of compressed air, is folded over contrary to the running direction by means of a pressure roller and pressed onto the associated non-punched area. In the laminating unit a transparent web of plastic provided with a self-adhesive coating on its underside is laminated over the folded web of paper and pressed so that a multilayered web is formed, which on its underside lies on a support web, which is provided with an anti-adhesive coating on its side facing the web of paper.

Abstract: The present invention is a corrosion-protected cable, a method of making a corrosion-inhibiting cable, and a corrosion-inhibiting composition. The corrosion-inhibiting composition includes a water-insoluble corrosion-inhibiting compound dispersed in an oil, and a stabilizer selected from the group consisting of propylene based glycol ethers, propylene based glycol ether acetates, ethylene based glycol ethers and ethylene based glycol ether acetates. The corrosion-inhibiting composition is preferably applied to the outer conductor of the coaxial cable, e.g., by wiping or by immersion, and heated to provide a corrosion-inhibiting coating that is not tacky or greasy.

Abstract: A tape-sheathing device is provided to eliminate peeling of a tape adhered to an electric wire, in which a first die, a second die and a third die having tapered holes are serially arranged. An electric wire fed by a feed roller and a tape are inserted together into respective dies, and the tape is installed incrementally on the electric wire by the respective dies. Opening portions are provided in the first die and the second die by notching a portion in the range of about 90° of the downstream end portions of the first and second dies, in a condition in which the opening in the first die and the opening in the second die are shifted by about 90° relative to each other. When the tape passes through the first die, it is adhered to a partial peripheral portion of the electric wire, adhered to about three quarters of the wire by passage through the second die, and adhered completely around the periphery by passage through the third die.

Abstract: Triboelectric sensors which generate electrical signals in response to mechanical disturbances creating relative motion of conducting and dielectric components of the sensor are fabricated from thin metal foil which is plastic-coated on one side and which can be formed into elongated, cable-like sensors having a variety of other shapes and sizes. The foil encloses one or more wire-like inner electrical conductors which, may be sealed within the envelope formed by the outer foil by heat-sealing the plastic-coated foil. A technique similar to welding may be used in which electrodes are placed in contact with opposing faces of the metal foil and an electrical current is passed though the foil. Local heating of the foil and of the plastic coating near the point of contact of one or both electrodes can cause the plastic to melt and the opposing plastic faces to bond together.

Abstract: Conductors are placed in insulator which acts as a spacer/centralizer for the conductors, which are in turn mounted within tubing. The void spaces between the insulator and the tubing inside wall can be filled with a sealing material. Alternatively, the voids around the substantially centralized conductors can be used as flow channels for the transmission of fluid pressure to a remote location, such as downhole. The conductors are protected because they are kept away from the tubing wall and can be further protected by the addition of the sealing material.

Abstract: In a method and apparatus for manufacturing an optical fiber cable, a metal band is gradually shaped into a lengthwise slotted tube, the optical fibers are introduced into the still open slotted tube, the lengthwise slot of the tube is welded and the outside diameter of the welded tube is reduced. The welded tube with the reduced outside diameter is wound at least once around a take-up reel. A force provided on the reduced outside diameter welded tube as it is wound on the take-up reel causes an elastic strain of 0.1 to 0.6% on the tube. The strain is released on the take-up reel to produce an overlength of the optical fibers relative to the reduced outside diameter welded tube.

Abstract: A method of manufacturing a downhole electrical cable is described. The method comprises arranging an elongate member adjacent to a flat elongate sheet of material, where the length of the elongate member is greater than the length of the flat elongate sheet. The elongate sheet is then formed into a cylindrical shape around the elongate member, and the adjacent longitudinal edges of the cylindrical shape are joined, preferably by seam welding, to form the elongate sheet into a tube with an end of the elongate member adjacent each end of the -tube. Thereafter, an elongate conductor is connected to one end of the elongate member, and the other end of the elongate member is pulled to draw the elongate conductor through the tube until the elongate member is removed from the tube and the elongate conductor is located within the tube. At this final point in the method, an end of the elongate conductor is adjacent each end of the tube.

Abstract: A method of making a flexible coaxial cable is provided. The method comprises advancing a cable core comprising a conductor and an expanded foam dielectric surrounding the conductor along a predetermined path of travel, directing an elongate strip of copper onto the advancing cable core and bending the copper strip into a generally cylindrical form so as to loosely encircle the core. Opposing longitudinal edges of the thus formed copper strip are then moved into abutting relation and a longitudinal weld is formed joining the abutting edges to thereby form an electrically and mechanically continuous tubular copper sheath loosely surrounding the cable core. The cable core and the surrounding sheath are simultaneously advanced while the tubular sheath is deformed into an oval configuration loosely surrounding the core. The longitudinal weld of the advancing sheath is then directed against a scarfing blade and weld flash from the sheath is scarfed from the sheath.

Abstract: A method of forming electrically insulated magnet wire and a coil formed therefrom. The method involves feeding a flexible electrical insulation tape along a path which converges with a path along which the wire to be wrapped is conveyed. Along the tape travel path at a location upstream of the point where the tape and wire converge, a quantity of heat activated adhesive that has been heated to a sticky state is applied to the passing tape. Then, before the adhesive coating sets, the adhesive coated tape reaches the point of convergence with the wire and is adhered to the wire to provide an electrical insulating wire wrap. The method of the invention provides for a longitudinal, partial wrapping of a conductor wire that furnishes suitable turn-to-turn insulation in coils formed with the wrapped wire.

Abstract: A method and apparatus provides for the sealing of an elongate splice of an electrical cable. A central extent of the splice is enclosed in a cylindrical enclosure tube so as to define exposed lateral splice extents on each side thereof. Sealing dams are constructed about the cable adjacent each end of the cable splice and adjacent each end of the tube. The exposed lateral splice extents are covered with a pair of elongate generally cylindrical splice enclosing shells each having open ends. The open ends of the shells are sealably attached to the sealing dams to sealably enclose the cable splice. The shells and the tube are filled with a curable encapsulant to fully encapsulate the cable splice.

Abstract: In the method and the machine for manufacturing a bundle (33) of thread-like elements such as tubes or electric cables of finite length and including at least one junction point for a branch, and in which the elements of the bundle are covered by a tape (31) of thermofusible insulating material wrapped transversely about the bundle with the longitudinal edges (31a, 31b) of the tape being united by welding, two rows each comprising a plurality of wheels (9 to 14) for driving the bundle (33) and the tape (31) are provided, the wheels pressing against the tape, a V-shape being previously imparted to the tape by a guide situated upstream from the wheels, said rows of wheels defining between them a through path (18) for the bundle, the path being upwardly open and passing successively beneath a first horizontal guide (23) for folding down one of the sides of the V-shape against the bundle, beneath a nozzle (36) for blowing hot air into the angle formed between the folded-down side (31a) and the non-folded-down sid

Abstract: A composite shield jacket and woven electrical transmission cable assembly is disclosed wherein the shield jacket comprises an outer elastomeric cover and a metalized backing on the interior side of the cover which advantageously may comprise a thin flexible fibrous web formed either by weaving metallic coated fibers or forming a non-woven web from the metallic coated fibers, or by applying a thin metallic layer to the backside of the cover. In any case, a highly durable, flexible shield jacket is provided. When the jacket is applied to a flat transmission cable according to the invention, the side edges of the shield are on opposite sides of the cable so as to overlap the sides of the shield and cover so that exits from the shield are defined on opposing sides of the cable reducing the unwanted escape of interference noises.

Abstract: A shielded electric cable having a core including an insulated conductor. A first shielding member formed of an elongated ribbon of insulating material and a pair of elongated metal foil strips arranged in a parallel relationship with the ribbon and bonded to the opposite sides of the ribbon is applied longitudinally to the core and wrapped circumferentially therearound forming two concentric substantially closed shielded layers. A layer of plastic material, preferably foamed, surrounds the first shielding member and a second shielding member surrounds the plastic layer, the second shielding member being formed of non-braided metallic material. The layer of plastic material is bonded to the shielding members. The shielded electric cable is provided with an outer jacket of non-conducting material and having an appropriate O.D. for receiving a standard connector.

Abstract: A power cable for use in high moisture and chemically corrosive environments has a longitudinally-folded sheath for encapsulating one or more electrical conductors. A plurality of overlapping folds at the longitudinal edges of the sheathing material creates a labyrinth-type sealing joint for maintaining moisture and gas integrity of the cable. A sealant is provided within the circumferential and radial spaces defined by the overlapping folds of the joint.

Abstract: An electrical cable and a method for manufacturing the electrical cable are provided in which a plurality of insulated conductors have a protective jacket extruded thereabout, the protective jacket having an exterior ribbed surface which includes a plurality of longitudinally extending ribs between which extend a plurality of thermal expansion voids. The protective jacket is formed from a thermally set elastomeric material which is partially cured, and then a protective exterior armor is helically wrapped around the exteriorly ribbed surface of the elastomeric, protective jacket. Then, the electric cable is heated to an elevated temperature for a period of time which is sufficient for fully curing the elastomeric protective jacket formed therein.

Abstract: A shielded electric cable having a core including an insulated conductor. A first shielding member formed of an elongated ribbon of insulating material and a pair of elongated metal foil strips arranged in a parallel relationship with the ribbon and bonded to the opposite sides of the ribbon is applied longitudinally to the core and wrapped circumferentially therearound forming two concentric substantially closed shielded layers. A layer of plastic material, preferably foamed, surrounds the first shielding member and a second shielding member surrounds the plastic layer, the second shielding member being formed of non-braided metallic material. The layer of plastic material is bonded to the shielding members. The shielded electric cable is provided with an outer jacket of non-conducting material and having an appropriate O.D. for receiving a standard connector.

Abstract: Provided is a method and apparatus employing stepped overlap apertures disposed in adjacent overlap rings. The rings are arranged so that the diameters of the stepped apertures are sequentially decreasing. The apertures form a generally flat advancing metal tape into a cylindrical tube having overlapped edges. Typically, the cylindrical tube is used as a metal guard about a cable core. Each aperture is generally circular but one quadrant of the circle contains a step whereby the diameter of the aperture increases. The final tubular configuration of generally circular cross-section of the metal tape about the cable core is developed in the final smaller diameter overlap rings which bring together the two overlapped metal edges of the metal tape. Then, the metal tape passes to finishing rings which press the two engaged overlapped edges so that these edges now stay together as a longitudinal overlapped seam.

Abstract: In known cables, the cable core is surrounded by a metallic inner layer of a sheath, and the inner layer is enclosed by a corrugated metallic outer layer of the sheath. In these cables, a high resistance against corrosion and high temperatures at a good shielding of the electric conductors is not ensured.The new cable (1) including the inner sheath layer (19) which is made of at least one flexible copper band (11) and defined by an electromagnetic shielding with a shielding attenuation from 80 to 115 dB, with the shield attenuation in this range being dependent from the wall thickness of the inner layer and rising monotonously with increasing wall thickness, and the outer sheath layer (27) which is made of a steel band and increases the high temperature resistance of the cable 1, has the advantages of a good temperature resistance even at high ambient temperatures, like e.g. in case of fire, and a high resistance with regard to corrosion.

Abstract: A process for obtaining a twisted pair electrical signal cable having conductors of equal physical length and equal signal transmitting properties by passing a parallel pair of adhered insulated conductors of equal length through a closely-fitting die and twisting the conductors into a twisted pair cable. The process applies to thermopolymer insulated and ePTFE insulated conductors.

Abstract: A method and apparatus for manufacturing a continuous metal tube having a plurality of electrical conductors disposed therein, by using a spring member to depress the electrical conductors while a flat metal strip is formed into a tubular member and welded to enclose the electrical conductors. The spring member functions to protect the electrical conductors from heat damage. The welding occurs completely downstream of the spring member in order to avoid excessive heat buildup in the spring member.