Abstract: A ribbon cable carrying ground and signal wires in a single plane includes, at predetermined intervals, separator materials inserted between the signal wires and the ground wires to facilitate separation upon termination. A method for manufacturing such a cable includes the steps of separately guiding the signal and ground wires to a lamination station, and means for inserting the separator material between the signal and ground wires at predetermined intervals prior to lamination.

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: A wiring layout for new home construction in which primarily two different cables distribute various electrical signals from a central location to different rooms in a home. The first cable, an AC power and internal communications cable, is a ribbon cable containing power conductors and digital data conductors. A predetermined number of lengths of this ribbon cable form that number of branches from the central location to different areas of the home. The second cable, the external communications cable, is a cable containing coaxial conductors and twisted wire pairs in one casing. This cable is run from the central location to a splitter. A predetermined number of lengths of the second cable are then run from the splitter to selected locations in some or all the rooms. The resulting layout from this combination branch-star layout allows efficient transmission of signals through a home and enables reduced installation costs.

Abstract: Multiple discrete coax cables 1 comprising: corresponding signal wires 2 and corresponding ground wires 5 within corresponding sheaths 4, the sheaths 4 having external profiles 56 extending along the lengths of corresponding cables 1 constructed for passage through corresponding eyes 64 conforming to the profiles 56, the cables 1 are flexible independently, and wires 2, 5 extend without skew along the corresponding axes of the independently flexible cables 1 for connection to a corresponding housing block 16 of a connector assembly 6.

Abstract: An electric fence line for use in confining livestock is formed of strands of a high strength and high visibility electrically insulative material, which have been woven, twisted, or braided, together with at least one highly electrically conductive low electrical resistance metal strand, such as copper wire, and at least one high-strength metal strand of higher electrical resistance, such as stainless steel. The metal strands are oriented in touching relation, either continuously or at positions spaced longitudinally of the metal strands, the high-strength metal strand providing an electrical bridge between ends of the highly electrically conductive strand or strands in the event of breakage of the highly electrically conductive strand, whereby to provide electrical continuity in the fence line with only a minimal increase in the total electrical resistance of the fence line.

Abstract: The disclosed accessory RF shield has unitized conductive and insulating barrier sheets, sized to correspond lengthwise to the axial length of a ribbon cable to be shielded and widthwise between opposite side edges to completely encircle the ribbon cable and present overlapped inner and outer side edge layers adapted to be connected together for forming a field connection.

Abstract: A flat electrical power-carrying pod for inclusion as a component in a ribbon cable comprising a multiplicity of parallel wires insulated as a unit by polytetrafluoroethylene and having on each side of the plane of wires a layer of hard cut-through resistant film not contacting the other hard polymer layer. Polyimide is the preferred hard polymer.

Abstract: A miniature controlled-impedance transmission line consists of a flexible cable having side-by-side conductors transmitting high frequency signals. The cable is preferably in the form of a pair of conductors, each surrounded by respective inner and outer dielectric layers of different compositions. The inner and outer dielectric layers are applied to each conductor independently of the other conductor, after which the respective outer dielectric layers of the two conductors are bonded together in side-by-side relationship without altering the inner dielectric layers. The result is a conductor pair having minimum cross-section for high-density applications and uniform capacitance which is also stable in that it will not change with subsequent bending or handling.

Abstract: The method of making a flat wiring harness consists of a pre-shaping process, a shaping process, and a wire bonding process. In the pre-shaping process, the intertwined wires are combed to be smoothed and straightened out and are pushed by a press block into parallelly arranged grooves in a series of longitudinally lined jigs and kept therein by a cover. In the shaping process, the group of wires thus laid in parallel lines in a series of the grooved jigs are shaped into a desired pattern of the flat wiring harness by moving any desired grooved jigs horizontally along guide slots formed in a holder plate, on which the grooved jigs and associated components are mounted. In the bonding process, the shaped flat wire group is applied with adhesive on one side through a screen which is patterned according to the shape of a final flat wiring harness. As the adhesive hardens, the wires are bonded together and a flat wiring harness of a desired two-dimensional shape is obtained.

Abstract: An electrical cable is provided wherein a conducting member is surrounded by an insulator. Around the insulator is a shielding element which is configured such that a pressure sensitive or heat fusible adhesive is placed on a top surface of the shielding tape in a parallel, nested serpentine pattern. The shielding tape is positioned so that it surrounds the insulator and has an overlap of its top surface with its bottom surface. Due to the parallel serpentine adhesive pattern between the top surface and the bottom surface in the overlap, an effective seal against moisture is achieved, independent of the width of the individual adhesive strips. Similarly, contact between the metallic portion of the top surface and the metallic bottom surface achieves a barrier to electrical and electromagnetic interference within the electrical cable. The serpentine adhesive layer also functions to securely connect the shielding tape to the insulator.

Abstract: A strippable, shielded electrical cable comprises a plurality of elongate, parallel-spaced electrical conductors encased in a casing of electrical insulation. At least one of the conductors, preferably located at a position other than at the marginal ends of the cable has an exposed portion free of casing material. An electrically conductive wire mesh shield overlies the casing and is in electrical contact with the exposed conductor portions. A top layer of electrical insulation overlies the wire mesh shield. A release sheet of electrical insulation is disposed between the conductive shield and the cover layer. A first adhesive is on the lower surface of the sheet facing the shield, the first adhesive being removably adhered to the metallic wire mesh shield. The first adhesive and a portion of the casing material are removably adhered to each other through the interstitial openings of the wire mesh.

Abstract: An apparatus for separating and orienting conductors from a bundled array into a planar array includes a grooved template and means for fixedly uniting the conductors when disposed in the groove. A cable adapted for connection to a flat ribbon cable connector includes a portion of bundled connectors, and a portion including conductors separated by hand into the grooves on a template and fixedly retained in position by a laminate material connected thereto. The method involving use of the apparatus to produce the product described above is also disclosed and claimed.

Abstract: A shielded flat transmission cable for use in wiring electronic appliances having consistent low resistance and a high shielding effect. The cable comprises a plurality of insulated parallel conductors including a grounding conductor and signal transmitting conductors. The conductors and insulating layer are surrounded by a thin metal shielding material. An insulating film surrounds the outer surface of the shielding material. The shielding material is directly and metallically connected to the grounding conductor providing a good electrical contact between the shielding material and the grounding conductor. The connecting means employed can be a spot weld or any other equivalent means directly connecting said grounding conductor and said shielding material. In a first embodiment of the invention the insulation layer, shielding material, and insulating film are formed through lamination. In a second embodiment of the invention they are formed through winding.

Abstract: A multi conductor cable with a sheath having improved mechanical flexibility is provided. The cable comprises a ribbon cable in which a plurality of core wires are connected parallel in same sections to each other and in other section, the plurality of the wires are separate. These sections are arranged alternately in the longitudinal direction of the ribbon cable. The transversely central portion of the ribbon cable is curved into about S-shape, which offers superior elastic properties. Side portions of the ribbon are wound around the central S-shaped portion to form the core of the cable according to the invention.

Abstract: A current bar arrangement includes a flat, two-wire, flexible cable (2) provided with a rubber-like insulation (2.3). The cable has a plurality of holes (2.4) stamped in the insulation at a mutual distance between the two wires (2.1, 2.2). The two wires are laid bare in each case for a short distance. The current bar arrangement also has a cable channel (1) substantially form-stable in the lengthwise direction and substantially U-shaped in profile for receiving and holding the cable. The current bar arrangement is very versatile and variable in use, but especially in low-voltage halogen lighting systems. It is distinguished by an especially simple technical construction and, associated with this, by a very low production cost.

Abstract: An electrical cable of conductive wire having an insulating layer of expanded, microporous sintered polytetrafluoroethylene around it, followed by a coating of a vinylidene fluoride-hexafluoropropylene copolymer surrounding the insulating layer, and an outer coating of polyvinylidene fluoride.

Abstract: An electrical cable of conductive wire having an insulating layer of expanded, microporous sintered polytetrafluoroethylene around it, followed by a coating of a polyesterpolyurethane surrounding the insulating layer, and an outer film of thermoplastic polyester elastomer surrounding the coating.

Abstract: A cable assembly for an electrical signal transmission system comprises a plurality of elongated conductors, a conductive shield surrounding each conductor, and a dielectric layer between each shield and its respective conductor. The shielded conductors are embedded in a dielectric material and the dielectric material is wrapped in a double conductive shield. Adhesive layers are located between the double shield and the dielectric material and between the two shields making up the double shield. This cable assembly results in a signal transmission apparatus which has increased immunity to the effects of external electromagnetic fields, electrostatic charge, and mechanical vibration. It is particularly useful in transmitting low level signals produced by ionization detectors used in x-ray inspection apparatus.

Abstract: A multi-conductor flat ribbon cable for transmission of data signals having firmly-held accurately spaced apart drain wires wrapped with spaced-apart coils of polymer fibers.

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: The cable is made up of a series of pairs stranded alternately in one direction and the other. At the locations of the reversal of the stranding direction, the individual conductors are kept in the form of a web and welded together side by side. Between two thus bonded segments, the adjacent pairs are twisted in opposite directions. A ground wire is provided with lengths of sheathing which come to be placed in the bonded segments. These segments are marked by deposition of a radioactive substance or other indicator material detectable during a subsequent stage of manufacture and actuating marking. Once overall stranding and jacketing have taken place, or during those stages, the bonded segments are spotted owing to the indicator substance and are marked visibly.

Abstract: An apparatus comprising an insulated flexible circuit having conductors therein for electrically interconnecting vibrating structures having a half-loop shaped section between the structures so that the vibration does not cause fatigue and breaking of the conductors or insulation and which also minimizes coupling of mechanical forces between the structures that can alter vibrating motion of the structures. The flexible circuit apparatus is particularly useful for Coriolis type mass flow metering devices.

Abstract: A ribbon coaxial cable having precisely spaced conductors and drain wires separated by a dielectric spacer, conductor and spacer shielded together, and units jacketed to give cable having wires exactly positioned for termination.

Abstract: A high density electrical connector assembly, and method of manufacturing same. More particularly, the invention covers an essentially flat, woven screen formed of a plurality of substantially parallel, electrically conductive wires forming the warp wires thereof, where such wires may be as small as 2 mils in diameter. Arranged essentially perpendicular thereto are plural, spaced apart, insulative woof filaments. To one major face of said flat, woven screen is applied a hot laminating film to encapsulate said wires, while to such other major face a comparable film is applied. However, for such other face, the encapsulating film is not coextensive with the screen length, but rather is spaced from the ends thereof so as to provide for connector contacts on each such wire. If desirable, the contacts may be plated.The invention also contemplates means for electrically interconnecting the assembly hereof to a high density circuit pattern, such as found on a PC board.

Abstract: A cable assembly formed by a plurality of bundles of twisted wire strands with the wire strands forming at least one bundle being of a different gauge than the wire strands forming at least one other bundle. Insulation means extend around the bundles of wire strands. A pair of cables configured in the above manner are provided to carry the positive and negative signals between a power source and a load.

Abstract: A conductor assembly formed by a pair of cables each formed by two conductors in a side-by-side relationship. One conductor of each cable includes at least one wire and the other conductor of each cable is formed by a plurality of bundles of wires. The diameters of a portion of the wires are of a different gauge. The conductors are surrounded by insulation which is configured to permit the assembly to be installed around a corner and to permit one cable to be bent back upon the other. The two conductors of each cable can be mechanically connected together so that they together carry the positive or negative portion of the signal or can be separately connected so that they each carry different frequency components of the signal.

Abstract: The invention provides a sheet material adapted to make bonded electrical connection to an array of closely spaced conductive terminal pads. The material may be provided as a roll of an elongated flexible connector tape. The sheet material of the invention comprises a thin, flexible insulating substrate and a plurality of longitudinally-extending, regularly-spaced, metal conductive members. The sheet may also include an adhesive layer that may cover the conductive members or at least a portion of the conductive members may extend above the adhesive layer. The conductive members may be supported and held on the substrate or may be suspended in the adhesive, out of contact with the substrate.

Abstract: An electrical cable of conductive wire having an insulating layer of microporous polymeric material around it, followed by a coating of a polyesterpolyurethane surrounding the insulating layer, and an outer film of polyetherpolyurethane surrounding the coating.

Abstract: A cable structure in round or flat form is characterized by a corrugated septum disposed intermediate an inner and an outer sheath. The septum contacts the sheaths to define tubular envelopes extending axially along the length of the cable. Each of the envelopes is able to receive a predetermined number of conductors. The sheaths and the septum are electrically connectable to a ground potential so as to totally electromagnetically isolate the conductors entirely along their axial lengths.

Abstract: Cordage (17) which may be used for any of the commonly marketed lengths of etractile cords comprises an array of a plurality of conductors (11--11) each insulated with a suitable plastic material. The array of conductors is enclosed in inner and outer jackets (52, 54). The inner jacket comprises a polyvinyl chloride (PVC) plastic material, for example, and has a thickness of about 0.015 inch. Covering the inner jacket is an outer jacket comprising a polyvinyl chloride plastic material having a thickness of about 0.005 inch and having a colorant constituent. The PVC composition of the inner jacket is such that it is a less expensive composition than that of the outer jacket. Enclosing the outer jacket is a layer (56) which comprises a top coating material. The top coating material provides the cordage with enhanced retractibility and prevents discoloration as well as plasticizer migration from the outer jacket.

Abstract: A cable assembly in which a pair of cables are provided to carry the positive and negative signals between a power source and a load. Each cable consists of a conductor wrapped around a dielectric core, and a plurality of bundles of wire strands are twisted around the wrapped dielectric core. The wire strands forming each bundle are twisted in a first direction and the bundles are twisted around the solid conductor in a direction opposite the first direction. Insulation extends around the bundles of wire strands.

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: Conductor strip (1) for electrical and telecommunication conductors with one or several through metallic conductors (9), which are arranged to be connected up at any selected position, and which are arranged on or in an electrically non-conductive strip base (5). The metallic conductor or conductors (9) is or are embedded in a through electrically conductive string or cord (8) of plastic material. Because of the inherent resiliency of the material and/or the springiness of the strip structure, the conductor strip (1) is automatically lockable by expansion or outward springing of the strip, whereat the free ends of the strip (1) are caused to engage behind projections (4) of an installation channel (3).

Abstract: A communication or control cable having one or more supporting elements made of(a) high-molecular weight reinforcing fibers or filaments having a modulus of elasticity>100 GPa, which are firmly joined to one another by means of(b) a high-molecular weight, crosslinked resin.

Abstract: A reinforced porous dielectric sheet of expanded polytetrafluoroethylene is provided wherein solid plastic reinforcement elements in the form of circular columns or wall-like partitions extending through the dielectric sheet from one surface to the other are distributed within the sheet. The reinforced sheet is useful as a substrate for printed circuit boards. The reinforcement elements are preferably of a tetrafluoroethylene/ethylene copolymer or an epoxy resin.

Abstract: A transmission line cable formed from a plurality of generally flat transmission line segments stacked together in interlocking relation is disclosed. The cable maintains consistent electrical characteristics in its individual conductors while permitting configuration into a round cable that can be mass terminated.

Abstract: In accordance with one embodiment of the invention, a process for interconnecting the circuitry of two substrates comprises the step of terminating the circuitry on bonding pads that are arranged in parallel rows with the first row of each substrate being nearest an edge of the substrate. The bonding pads of the two first rows of the two substrates are joined by conductors of a dielectric tape that bridges the two substrates. The conductors overlap the edges of the dielectric tape and are organized to permit them to be bonded to corresponding bonding pads of the two substrates, for example, by soldering. The two second rows of bonding pads are joined by conductors on a second dielectric tape which is wide enough to cover two first rows of bonding pads and thereby provide electrical insulation.

Abstract: The cable is made up of a series of pairs stranded alternately in one direction and the other. At the locations of the reversal of the stranding direction, the individual conductors are kept in the form of a web and welded together side by side. Between two thus bonded segments, the adjacent pairs are twisted in opposite directions. A ground wire is provided with lengths of sheathing which come to be placed in the bonded segments. These segments are marked by deposition of a radioactive substance or other indicator material detectable during a subsequent stage of manufacture and actuating marking. Once overall stranding and jacketing have taken place, or during those stages, the bonded segments are spotted owing to the indicator substance and are marked visibly.

Abstract: A cable assembly for an electrical signal transmission system comprises a plurality of elongated conductors, a conductive shield surrounding each conductor, and a dielectric layer between each shield and its respective conductor. The shielded conductors are embedded in a dielectric material and the dielectric material is wrapped in a double conductive shield. Adhesive layers are located between the double shield and the dielectric material and between the two shields making up the double shield. This cable assembly results in a signal transmission apparatus which has increased immunity to the effects of external electromagnetic fields, electrostatic charge, and mechanical vibration. It is particularly useful in transmitting low level signals produced by ionization detectors used in X-ray inspection apparatus.

Abstract: A cable termination assembly for in line emulation function includes plural pairs of electrical IDC (insulation displacement connection) contacts that face opposite directions on opposite sides of a multiconductor cable and a strain relief for holding together the cable and the contacts for use such that electrical connection is provided among each pair of contacts and a respective conductor of the cable. Desirably the IDC connections of contacts to the cable conductors are made simultaneously by contacts on both sides of the cable. A method and a machine for making the assembly provide for such simultaneous IDC connections and subsequent direct molding of the strain relief.

Abstract: The tapping or splicing apparatus for electrically connecting cables of the type having plural insulated conductors and drain wires comprises a base having an upper surface and a lower, substantially flat surface for juxtaposition with a floor surface. A plurality of insulation displacement contacts are supported on the base upper surface, each contact being configured to receive and electrically connect insulated conductors from at least two electrical cables. A detachable cover is secured to the base, the cover having an extent covering the contacts and including an upper surface that tapers downwardly toward the cover periphery. At the cover periphery there are plurality of cutouts extending through the upper surface of the cover, each cutout configured to accommodate a cable therein in a manner to present a gradual taper of the apparatus beneath carpets in an undercarpet wiring system to minimize its height effect in use.

Abstract: Making a branch connection with a flat cable and affording shielding is afforded by removing insulation at three longitudinally spaced locations transversely of the cable, folding the cable at the intermediate location, making connection to the signal leads at the intermediate location, cutting ground leads, folding ground leads at other two locations, and joining a portion of a conductive member to the ground leads on each side of the cable and by straps at the fold joining the portions of the conductive member affording ground contacts.

Abstract: An audio cable formed of a mass of wires which are wound together into a first group and a second group, the wires of the first group are electrically connected together by the wires being coated with an electrically conductive material such as a tin alloy. The wires of the first group are to facilitate the conducting of low frequency audio signals. The wires of the second group are electrically insulated relative to each other with each wire being coated with an electrically insulating material such as enamel. It is function of the wires of the second group to facilitate the conducting of the higher frequency audio signals. The second group is wound in a twisted manner about the wires of the first group.

Abstract: Flexible electrical connectors are employed to connect rigid members, such as plugs and printed circuit boards. Such connectors have a tendency to tear, especially in the region near the rigid member, and this can prove expensive to remedy. The invention provides reinforcing thread members, for example, along the connector which prevent any tear which may develop from growing further.

Abstract: A thin, relatively flat cable assembly for laying under carpet. The cable assembly includes an insulative central region and at least one conductor held in the central region. The conductor is of the type able to undergo only limited bending without damage, such as an optical fiber or a coaxial cable. The cable assembly also includes a pair of insulative side portions connected to the central region and extending therefrom in opposite directions with the side portions and the central region forming a substantially flat bottom surface of the cable assembly. Each of the side portions has components for permitting only limited bending of the cable assembly in the plane of the bottom surface.

Abstract: A cable structure in round or flat form is characterized by a corrugated septum disposed intermediate an inner and an outer sheath. The septum contacts the sheaths to define tubular envelopes extending axially along the length of the cable. Each of the envelopes is able to receive a predetermined number of conductors. The sheaths and the septum are electrically connectable to a ground potential so as to totally electromagnetically isolate the conductors entirely along their axial lengths.

Abstract: A self-supporting power cable which is especially useful in seismic testing. The cable includes an outer armor layer, a pair of tensile elements located inside the armor layer, a power conveying assembly located inside the armor layer and between the tensile elements, and filler material filling the otherwise empty spaces within the armor layer. The tensile elements are advantageously formed of several concentric layers of spirally-wrapped wire strands with at least the outer layer having less than a full contingent of strands. This improves the cable's strength-to-weight ratio while providing self support. To provide transverse force resistance against the cleats of a feeding device, the outer layer of the wire ropes contact the walls of the outer armor layer.

Abstract: A flat, multi-cable assembly is provided by laminating a multiplicity of flat tinned-copper strip conductors between a pair of organic plastic insulating sheets, both of which adhere tightly to each other but at least one of which is not adhered to the copper strip conductors. The copper strip conductors are typically parallel to and spaced-apart (not less than about 1/8 inch) from each other, and the distance between adjacent conductors is typically about equal to (or a major fraction of) the width of the conductors. One of the conductors includes a plurality of electrically isolated portions each of which is electrically connected to a respective one of the other conductors. The latter connections are provided by a plurality of conductor connecting patterns carried on one of the plastic insulating sheets (typically printed thereon using a conductive graphite, nickel or silver ink).

Abstract: A series-parallel lighting string having a cord with three wires separated by insulation and a series of cutouts severing the center wire of the cord, and lampholders positioned at each of the cutouts to hold a miniature push-in type light bulb. Each of the lampholders has a pair of contact plates between which a bulb is inserted with its lead wires in contact with the plates. The contact plates are positioned within the housing of the lampholder, and the housing has a snap-fitting cap hingedly attached thereto to define a wireway. Each of the contact plates has an insulation-piercing contact finger positioned to engage one of the end portions of the severed wire to each side of the cutout in the cord. The first and last lampholders in each series set has a second cord-piercing contact finger which contacts one or the other of the outer non-severed wires. The cap or lampholder housing has an insulating divider which projects through the cutout to keep the severed end portions of the central wire separated.

Abstract: A twisted pair flat cable suitable for use in undercarpet environments is disclosed. A plurality of twisted pairs are positioned side-by-side, each in separate compartments formed within a hollow envelope of an extruded outer sheath. Separator ribs which do not extend across the entire height of the sheath prevent lateral movement of twisted pairs out of their respective compartments. By cutting the outer sheath at only one location, the outer sheath can be folded back to deploy the twisted pairs for termination. Laterally adjacent solid members suitable for withstanding compressive loads can be employed with a centrally disposed sheath.