Abstract: A multiple conductor electric cable (10) having a plurality of conductors (12), each formed of a multi-filament tensile core (14) of unbonded aramid fibers (16). The conductors (12) further have at least a pair of tinsel conductor ribbons (18, 20), spirally wrapped in the same direction about tensile core (14). Further, conductors (12) are arranged in an orientation wherein the spiral wraps of conductor tinsel in each conductor (12) are in alternating directions from one conductor (12) to the next within a thermoplastic insulating jacket (22), which is further encased within polyester jacket (26).

Abstract: Armored cable sheath is coded for easy visual identification by applying patterns, e.g., colored patterns, along the length of the cable.

Abstract: Electrical conductor comprising a metallic bar (1) jacketed with a sheath (2) made from a metal different from that of the bar, in which the bar (1) exhibits at least one longitudinal groove (3, 3') containing a bead (4, 4') made from the same metal as the sheath (2), welded to the bar (1), and the sheath (2) exhibits an opening opposite the bead (4, 4'), the said opening containing a metallic mass (9, 9') welded to the bead (4, 4') and to the sheath (2). The conductor finds one application in electrodes comprising a metallic plate longitudinally fixed to an electrical conductor.

Abstract: An electrical overhead transmission conductor cable having a steel reinforcing core which exhibits improved characteristics and unexpected conductivity above about 64% IACS is manufactured of a steel core covered by at least one stranding layer which is formed of round or trapezoidal shaped wire strands subjected to annealing before heat treatment and drawn and stress-relieved/annealed after stranding is completed, to provide a finished cable which includes an aluminum conductive portion which is dead soft, or "O" temper. The steel core of the cable carries substantially the entire tension load of both the core and conductors when suspended between vertical towers. The overhead transmission cable may be formed of trapezoidal cross section conductors wires for improved vibration performance characteristics.

Abstract: An improved method for making a flexible coaxial cable having an inner conductor (36) to which a dielectric material is secured to form a dielectric core (30) for the coaxial cable (38), and a flexible outer conductor (50) such as one formed from a strip helically wound conductor (58), employs a solid dielectric starting material (32), such as a spline dielectric or a cylindrical dieletric or an expanded dielectric, which is ccntrollably cut, such as by saw blades (34), using a desired cutting angle (.theta.) and blade width (.alpha.), in order to cut away a predetermined amount of the solid dielectric starting material (32) to provide a shaped dielectric core (30), such as a spiral or helix (30a, 30b), from the solid dielectric starting material (32).

Abstract: Disclosed herein is a wire conductor for a harness, comprising a central portion which is formed of aramid fiber and a conductor portion formed by circularly compressing a stranded wire which is prepared by arranging copper strands around the central portion and braiding the same. The conductor portion has a conductor sectional area of 0.03 to 0.3 mm.sup.2.

Abstract: A flexible shielded cable (20). The cable includes an elongate flexible metal conductor (24) and a layer of a flexible dielectric material (26) disposed about the conductor. The cable has a flexible metallic shield (28) positioned about the dielectric material with the shield including a copper foil (30) having overlapping edges (36) and a copper, spirally served shield (32) about the foil. A layer of metal bonds together the overlapping edges, bonds the spirally served shield and the foil and closes the openings of the spirally served shield. A method of forming a metallic shield is also disclosed.

Abstract: An electrical cable has a single yarn polyamide fiber strength member with a plurality of copper strands positioned adjacent thereto. An insulator jacket is extruded over the copper strands and the strength member to provide a insulated lead of high strength. A foam filler layer is extruded over a plurality of such leads, and a non-porous jacket is extruded over the foam filler layer, providing a light weight, flexible, high-strength, multi-lead cable, which is easily stripped by automated equipment.

Abstract: An improvement in the method for preparing diffusion resistant clad thermocouple cable by placing the thermocouple wires in MgO powder or pellets on a strip of metal cladding material and longitudinally bending the strip of cladding material around the thermocouple wire and the MgO and welding the resulting seam closed is achieved when the resulting composite cable is placed on a second metal cladding strip such that when the second strip is bent longitudinally around the composite cable the resulting seam is displaced from the welded seam of the first cladding strip.

Abstract: A method of forming an electrical cable assembly includes providing a plurality of round electrical conductors. One of the conductors is flattened along a longitudinal surface portion. The conductors are arranged in side-by-side transversely spaced position with the flattened portion of the one conductor facing an adjacent conductor. An insulative casing is extruded about the conductors and includes a major planar surface permitting mass termination to a connector. The one conductor includes a curved surface portion which faces the major planar surface.

Abstract: Braided fine wire cable is prepared for termination by electrical terminals by a coating of dielectric material such as curable varnish which coats and embeds the myriad of fine wires. The coating upon hardening imparts structural integrity to the otherwise very flexible cable, enabling handling. The coating also retains the wire portions many of which may be severed during application of electrical terminals thereto to obtain electrical connection of portions of the terminals with ends or surfaces of many of the wires, thus preventing disintegration of the cable's termination region when the terminals are applied. The hardened coating also enables the cable region to be shaped and formed to some extent, even including cutting or notching the cable, to adapt the cable region to the structure of the terminals, enabling use of existing terminals used for terminating solid flat conductor cable, for example.

Abstract: Methods and apparatus for manufacturing an improved ribbon cable comprising a plurality of insulated wires juxtaposed in fixed relationship to each other and an improved transposed cable in which each conductor of the cable of the invention is in the form of a continuous helix. The electromagnetic device of the invention has the ribbon cable of the invention as its magnetic windings.

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: During the heating of a moving wire (21) such as when the wire is being aaled, the wire is heated in such a manner that the energy applied to each successive increment of length of the wire is substantially constant. This is accomplished by causing an integral number of half cycles of alternating curent to be applied to each successive increment of length of the wire as the increments are moved from one sheave to another in an annealer (20). In one embodiment, the integral number of half cycles is achieved by adjusting the speed at which the wire is being advanced between two sheaves of the annealer in a manufacturing line. This also may be accomlished by adjusting the distance between the sheaves in an annealing leg of the annealer, or by adjusting the frequency of the applied power source.

Abstract: A coaxial cable is provided having a ribbon inner conductor surrounded by a dielectric and a circumferential conductor. The coaxial cable may be microminiature comprising a very thin ribbon strip conductor from between 5 to 15 .mu.m thick and from 150 to 200 .mu.m wide, having a surrounding foamed dielectric or parylene applied thereon by a vapor plasma process and an outer conductor of an adhering high conductivity metal vacuum deposited on the dielectric. Alternately, the foam dielectric embodiment may have a contiguous parylene coating applied adjacent the inner conductor or the outer conductor or both. Also, the cable may be fabricated by forming a thin ribbon of strip conductive material into an inner conductor, applying thereabout a dielectric by spraying on a solution of polystyrene and polyethylene and then vacuum depositing and adhering high conductivity metal about the dielectric.

Abstract: An electrical cable with a core comprising an electrical conductor surrounded by insulation and with both a screen of wires in open helix configuration on the core and at least one other wire extending longitudinally of the core and electrically contacting the wires of the screen. An insulating sheath surrounds the screen and may itself embed the wires or it may surround a layer of extruded material which at least partially embeds the wires. The material of the layer may be insulating or semi-conductive. Also, a process for manufacturing such cable.

Abstract: A support strand is formed of a non-extensible thread wound around an elastic thread in order to restrain the extension of the non-extensible thread within such a limit that the coil of the wound, non-extensible thread can follow movement of the elastic thread. A signal transmitting strand is further wound around the outer surface of the support strand to form the composite strand.

Abstract: A piezoelectric coaxial cable comprises a central stretchable electrical conductor (1), preferably formed from a low melting point metal alloy, a piezoelectric intermediate layer (2), preferably formed from a vinylidene fluoride polymer which has been stretched and radially polarized to render it piezoelectric, and an outer electrical conductor (3).The intermediate layer has a ratio R of its internal radius to its external radius which is preferably not more than 0.5 and more preferably not more than 0.4. This construction enables coaxial cables to be formed without voiding or breaking of the internal conductor during stretching.

Abstract: A method and apparatus are disclosed in which an elongate strip of multi-conductor flat flexible cable is fed by feeding means along a predetermined path of travel where it intersects with a pair of spaced apart, elongate strips of terminals. The strips of terminals are arranged with the terminals facing in opposite directions and predetermined lengths thereof are fed by feeding means such that the predetermined lengths of the stripes and the flexible cable are in a superposed relation. Rows of terminals are separated from the strips of terminals and fastened by terminal applicator means to the flexible cable in electrical conductive relation to the conductors therein. This procedure is repeated at predetermined, spaced apart locations along the length of the elongate strip of flexible cable to form interconnected cable harnesses of the cable and terminals.

Abstract: Forming a core unit from telecommunications conductor units of twisted together conductors in which the units are first changed in relative positions laterally of their passline and then are passed between two rollers to form them into a curved array. The positions of the units in the array influence their final positions in the core unit as they move towards a core unit closure device. Hence as the positions in the array change because of the positional change in relative positions of the units upstream from the array, then the units change in relative positions in the core unit by extending backwards and forwards around the core unit axis.

Abstract: A process for producing an insulated rectangular wire adapted for edgewise winding. A round wire of copper, copper alloy, aluminum or aluminum alloy is drawn through a die in a tandem-extrusion apparatus. The drawn wire is then electrolytically cleaned, following which an insulating coating is applied to the cleaned surface. The insulating coating is baked, and finally the insulated wire is subjected to at least one cycle of rolling. Preferably, the drawing is done with a single die and capstan to thereby remove any surface defects in the conductor having a size of 3 .mu.m or greater. The capstan should be made of a material softer than the material of the conductor. Further, it is preferred that fresh lubricating oil containing no metal dust be applied to the surface of the conductor during the drawing process.

Abstract: Improved multistrand Rutherford-type superconductor cable is produced by using strands which are preformed, prior to being wound into the cable, so that each strand has a variable cross section, with successive portions having a substantially round cross section, a transitional oval cross section, a rectangular cross section, a transitional oval cross section, a round cross section and so forth, in repetitive cycles along the length of the strand. The cable is wound and flattened so that the portions of rectangular cross section extend across the two flat sides of the cable at the strand angle. The portions of round cross section are bent at the edges of the flattened cable, so as to extend between the two flat sides. The rectangular portions of the strands slide easily over one another, so as to facilitate flexing and bending of the cable, while also minimizing the possibility of causing damage to the strands by such flexing or bending.

Abstract: The method of the invention enables the manufacture of flat, rectangular cable from fine-gauge, self-bondable magnet wire. The cable is capable of efficiently transmitting electrical currents at high frequencies.

Abstract: A flexible lightweight short pulse power cable assembly for electrical power transmission, e.g., for transmission of electrical power at 20,000 volts at short pulse D.C. halfwave currents of 30,000 amperes. The cable for electrical transmission utilizes an inner conductor and an outer concentrically disposed conductor, the inner and outer conductors having substantially equal cross-sectional areas and consequent resistances to equal and opposite current flows in the respective conductors thereby placing the cable current forces in compressive balance and further reducing electro-magnetic interference from transmission of power through the cable.

Abstract: Telecommunications cable formed by locating a plurality of conductors in a group in an open array, which is preferably planar, and shaping the group into arcuate configuration around a longitudinal axis with the conductors extending generally in the direction of the axis. A layer of insulation is then provided around the group to hold it in its planar configuration.

Abstract: A heat-resistant insulated electric wire and cable which comprises an electric conduction; the first coating layer thereon consists of a mixture of a binder and a finely ground and unmelted inorganic substance; and the second organic insulating coating layer formed on the first coating layer. Said heat-resistant insulated electric wire can advantageously be used for a coil of a magnet or a motor.

Abstract: A cable comprised of coated conductors, wound together and compacted, has an insulating strip interposed between the two layers in which the conductors are disposed, to ensure good insulation therebetween. Apparatus for producing the cable includes a stranding machine, with which a hollow mandrel is used for the purpose of introducing the insulating strip between the layers of conductors, and a method for producing the cable is also provided.

Abstract: Elongated, flexible printed circuit board coaxial cable which is made using a pattern on a flexible PCB substrate on which coaxial cables are formed is described. A series of slits and folds allows one or more elongated cables to be formed in each pattern. Such cables are particularly useful for connecting multi-connector apparatus of the type which requires coaxial cables interconnected in very close spaces, such as the type used in ultrasound transducers.The method for manufacturing such elongated, flexible printed circuit board coaxial cable is also described. The method includes forming a pattern on a flexible PCB substrate on which coaxial cables are formed. Thereafter, a series of slits and folds allows one or more elongated cables to be formed in each pattern.Such cables are particularly useful for connecting multi-connector apparatus of the type which requires coaxial cables interconnected in very close spaces, such as the type used in ultrasound transducers.

Abstract: An improved multiwire conductor of the type which is mechanically stabilized by a solder filler. A solder filled conductor is heated to a temperature sufficient to make the solder brittle, but below the melting point of the solder. While still hot, the conductor is flexed, causing the solder to separate from the wires comprising the conductor, thereby increasing the interwire resistance. In one embodiment the conductor may be heated to a temperature above the eutectic temperature of the solder so that a controlled amount of solder is removed. The subject invention is particularly suited for use with braided, ribbon-type, solder filled superconductors.

Abstract: A tinned conductor is advanced through each of a plurality of successively smaller die openings in a drawing apparatus to reduce the diameter of the tinned conductor after which it is annealed. After the tinned conductor has been annealed, it is moved through the opening of a die which is slightly smaller than the final die opening in the drawing apparatus. This reconfigures any of the tin coating that may have reflowed during annealing and formed protrusions to remove any such protrusions and form an essentially smooth surface. As a result, the adhesion of a subsequently extruded plastic covering to the tinned conductor is controlled to be within a predetermined range and to be substantially uniform along the length of the conductor.

Abstract: An improved multiwire conductor of the type which is mechanically stabilized by a tin based solder filler. A solder filled conductor is heated to a temperature above its melting point for a period long enough to allow a substantial amount of copper to be dissolved from the wires comprising the conductor. The copper forms the brittle intermetallic compound Cu.sub.5 Sn.sub.6 with tin in the solder. After cooling the conductor is flexed causing a random cracking of the solder, and thereby increasing the interwire resistance of the conductor. The subject invention is particularly adapted for use with braided, ribbon-type solder filled superconductors.

Abstract: A conductor and method of making the conductor are provided for use in winding electrical coils which are cooled by a fluid communicating with the conductor. The conductor is cold worked through twisting and reshaping steps to form a generally rectangular cross section conductor having a plurality of helical cooling grooves extending axially of the conductor. The conductor configuration makes it suitable for a wide variety of winding applications and permits the use of simple strip insulation between turns and perforated sheet insulation between layers of the winding.

Abstract: A self-supporting aerial cable includes an undulated core enclosed in an aluminum, inner shield, a plastic inner jacket enclosed in a steel, outer shield having an unjoined longitudinal overlapped seam, and a plastic outer jacket. The outer plastic jacket includes a first portion which encloses the steel shield and a second portion which encloses a steel support strand that extends longitudinally but which is spaced from the first portion, said first and second portions of the outer jacket being connected by a web. The unjoined seam of the outer shield allows forces which are imparted to the steel shield by its formation to be transferred to the inner jacket and the inner shield which causes the inner shield to engage portions of the core to maintain the core coextensive with the inner and the outer jackets.

Abstract: This invention relates to a continuous method for making electrical heating mats suitable for installation on room floors, walls and ceilings, which method includes the steps of cutting transverse cuts in a longitudinal composite metal/plastic foil material (2) and stretching the foil in a controlled way in order to provide a meander pattern of electrical resistance strip material, the method also including steps of making unit length mats with predetermined ohmic resistance and steps of providing terminations.

Abstract: A method of end-to-end connection single- or multi-conductor electric cables having compressed mineral insulation and apparatus for end-to-end connection. The conductive metal sheath and the mineral insulation which covers the conductor(s) are removed along a short length at each cable end, a metal sleeve is fitted on the ends of the conductors, opposite each other, the sleeve is crimped on the ends of the conductors, a ring made of the same metal is fitted on each cable end, then a cylindrical connection sleeve with thin ends is fitted over the rings, then the ends of the cylindrical connection sleeve are crimped on the rings and on the ends of the cables.

Abstract: A process for manufacturing a coaxial cable which exhibits a substantially uniform electrostatic capacity with respect to length. The improvement includes the steps of reheating the insulated layer and then recooling and resolidifying the reheated insulated layer. The improvement also includes the steps of feeding and then reducing the outer diameter of the inner conductor prior to the winding of the rib onto the outer peripheral surface of the inner conductor.

Abstract: Method of producing a continuous flexible tubular conduit having a plurality of helically wound reinforcing-electrical wires is provided wherein the apparatus has means for forming a plurality of wires into a corresponding plurality of substantially identical continuous non-rotating helical coils without entanglement of such wires and an extruder head for extruding a polymeric tube around the coils with the coil turns coaxially aligned and alternately arranged to complete the tubular conduit.

Abstract: Disclosed is an electrical conductor formed from a plurality of elongate filaments, at least a portion of which have a non-circular cross section, the filaments arranged such that the conductor has a substantially smooth exterior surface and high density of material of the filaments in a cross section through the conductor perpendicular to its axis. A preferred method for forming such an electrical conductor involves the continuous electroforming of a plurality of elongate conductive filaments. After such filaments are stripped from a cathode track upon which they are deposited, a number of them are bunched and/or twisted together to form an electrically conductive strand. Finally, that strand is compacted to reduce its cross sectional area to provide it with a smooth exterior surface.

Abstract: This invention provides an improved structure of a floor cable used, for example, for a telephone cord in an office room, and also a method of producing such floor cable. The floor cable comprises a plurality of insulated core wires within a plastic cable sheath.Each of the insulated core wires has a plurality of folded portions along the wire length, and the cable sheath for the core wires has such cross section that a plurality of radial fins are provided on the thin circumference. Thus, the ripping out of the sheath for drawing out the desired wire to connect or branch the floor cable can be easily carried out.

Abstract: This disclosure relates to a luminescent device having a uniformly coalesced, transparent, luminescent silica glass target containing an activating amount of at least one selected rare earth oxide. This disclosure further relates to a luminescent process, a composition, and an article of manufacture.

Abstract: Manufacturing of a soft metal sheath formed of aluminum or copper, for example, is improved by suitably selecting the apparatus composing the shaping means employed therein and arranging the capstan and the sinking die in a novel manner. The apparatus selected is made from a wear-resistant synthetic resin such as a molybdenum bisulfide-included nylon. The sheath is manufactured from a metal tape of aluminum or copper through the working stages of applying a cylindrical tube shaped from the tape onto a cable core, butt welding the seam, and then reducing the diameter of the metal tube to connect it to the core.