Abstract: So as to eliminate wind dependent displacements in control cables such as are used in container loading facilities, the weight of the cable itself is increased. To this end, braided-over lead cords are arranged in the central elements of each conductor bundle and in the corner spaces of the core. The load-carrying capacity of the carrier member is ensured by high tensile strength plastic filaments in the form of a braid and optionally in the form of corner fillings.

Abstract: A flexible power cable includes three current carrying conductors and three further stranding elements arranged in the corner spaces twisted about a profiled core which contains a steel cable as the support member of the cable. The profiled core includes a round strand containing a steel cable and of three profiled strands radially adjacent thereto, each of which can contain a support member and/or an electric conductor.

Abstract: An electrical transmission line is provided comprising at least one elongate signal conductor, one or more other conductors placed away from and substantially parallel to said signal conductor, all conductors encased in an outer insulating resin covering having a rectangular cross-section, the signal conductor(s) being further encased in an inner insulating porous resin covering, the porous resin covering having an electrical shielding layer thereover.

Abstract: A high speed electrical transmission line is provided comprising a plurality of elongate conductor wires arranged in parallel relationship and encased in an outer insulating covering jacket having generally a rectangular cross-section and wherein each conductor is further encased within the outer jacket in an insulating covering of a porous resin material.

Abstract: An undercarpet cable comprises a signal-carrying core surrounded by a jacket having a rectangular cross section. Adjoining the jacket on opposite sides are two tapered side members that are easily peeled from the jacket to facilitate attaching a connector to the jacketed core.

Abstract: A reinforced cable having hauling, electrical and hydraulic lines. The cable has a substantially rectangular cross section and includes at least one internal support to protect these lines by resisting external compressive forces, and yet is bendable about one of its transverse axes for easy storage on and deployment from a drum. The internal support also protects the hauling lines from compressive forces applied longitudinally thereof by resisting radial displacement of the hauling lines. In one embodiment, the cable comprises an armor layer, a pair of engaged channels inside the armor layer, and a pair of corrugated supports inside the channels and fixedly spaced apart. The hauling lines, in the form of wire ropes, are located inside the corrugated supports, while the electrical lines are located inside the channels between the corrugated supports. The hydraulic lines can alternatively be located inside the channels between the corrugated supports, or inside the wire ropes.

Abstract: Disclosed is an electric service entrance cable comprising parallel insulated conductors, helically covered by evenly distributed uninsulated conductors, covered by longitudinally wrapped polyester glassed-backed reinforcement tape bound by helically wrapped fiberglass strand and an outer covering.

Abstract: An electrical cable, for communication purposes, having spaced-apart, insulated electrical conductors, between each two of which is disposed a portion having a block-shaped cross section, with a plurality of tension-absorbing elements of high-strength fibers being disposed in this portion. The problem in the past has been that the flexibility of the cable is limited by the specific breaking elongation of the fibers. To resolve this problem, and to improve the flexibility primarily for termination and connection purposes, the cable has an arbitrary number of tension-absorbing elements which are arbitrarily distributed, even in an unsymmetrical manner, in the tension-absorbing block of the cable. The electrical conductors are placed on the bending axis of the cable, which is determined by the tension-absorbing elements, the effect of the conductors on the bending properties, and the casing material.

Abstract: Optimum signal/power transmission characteristics are realized in a cable containing a plurality of individually insulated conductors which vary in size one to another wherein the ratio of the size of one conductor to the next larger conductor is about 0.62. Normally, at least three different sizes of conductors will be employed in a cable wherein each size classification differs from the next larger or smaller size classification by the specified ratio. This particular ratio is often called the golden section and is the ratio between the two sizes in which the lesser of the two is to the greater as the greater is to the sum of both.

Abstract: Flexible wire cable and the flexible wire cable by the steps of the process for manufacturing the flexible wire cable. The flexible wire cable interconnects between two spaced plurality of terminals. The terminals can be equally centered at opposing ends or can be spaced on different centers at opposing ends. A plurality of wire conductors are laminated between two sheets of insulation, each sheet having a thermosetting polyester adhesive coating, which partially and fully cures as a function of time-temperature-pressure. Each of the plurality of wire conductors are substantially surrounded internally one hundred and eighty degrees by each sheet of the insulation. The insulation is offset to provide an overlap at opposing ends or at only one end to provide a solder stop and controlled flexings of the wire conductors.

Abstract: A strain sensitive coaxial cable is disclosed as comprising a centrally dosed conductor about which is disposed a first insulating layer, and a second conductor disposed coaxially about the center conductor, configured as a helix and dimensioned to loosely fit with respect to the first dielectric layer and to permit relative axial movement generally between the second conductor and the first dielectric layer, whereby more uniform signals, and elastic-inelastic strain discrimination are provided and spurious outputs eliminated. An outer protective sheath is disposed about the helical turns of the second conductor.

Abstract: An electrical shielding tape comprises a polyester backing layer, and a metallic layer having an adhesive on the exposed surface thereof, the adhesive being disposed in an interrupted layer which defines both exposed open patches, or contact pads, and coated bonding areas thereon. The tape is constructed for use in a shielded cable of the type having at least one conductor wire and an uninsulated drain wire, wherein the tape is wrapped around the conductor and drain wires with the metallic surface of the tape facing inwardly and with the tape adhesively secured to the conductor and drain wires by means of the adhesive on the metallic surface thereof. Effective electrical contact between the tape and the drain wire is achieved in the open patches, or contact pads, which contact the drain wire, and therefore the tape can be grounded to achieve the desired shielding effects simply by connecting the drain wire to a ground terminal.

Abstract: A ribbon coax cable comprises a plurality of parallel and coplanar center conductors each surrounded by a dielectric sheath, a conductive member surrounding each dielectric sheath, a plurality of coplanar drain conductors each of which extends parallel to a respective center conductor and in electrical engagement with the conductive member, an elastomeric material surrounding the conductive members and the drain conductors which maintains the drain conductors and the conductive members in electrical engagement along the entire length of the cable.

Abstract: A liquid leak detecting sensor in cable form is provided wherein an element of the cable is a material which is easily deformable and which, on deformation, maintains the cable in the deformed configuration.

Abstract: A shielded ribbon cable is formed either by trimming a conventional ribbon cable to expose one or both edge conductors, and coating the cable by painting it with a conductive paint or covering it with an extruded conductive plastic layer, or by forming a ribbon cable of individually-coated wires, one or both edge conductors having a conductive coating, and subsequently painting it with a conductive paint or covering it with an extruded conductive plastic layer. One or both edge conductors thus serve as drain wires for the shield formed by the external covering of conductive paint or conductive extruded plastic.

Abstract: A litz wire comprises three or more insulated strands consisting essentially of an inner conductor and an outer insulating layer on said conductor. The strands are twisted symmetrically with respect to the center line of the wire, so that a current density distribution in the litz wire becomes uniform. Three or more such litz wires are twisted to form a composite litz wire. The composite litz wires are suitable for use in a high-frequency coil.

Abstract: An electric cord set having a plurality of stranded conductors and a connection plug with an identifying connection element, such as a grounding pin, the identified connection element being connected to a conductor identified by having a higher magnetic permeability than the other conductors. Preferably, the ground wire is made of wire strands similar to the other conductors, but contains 1 to 3 auxiliary steel wire strands. In a method and device for manufacturing such a cord set, the cord is arranged next to a magnetic sensing element and rotated about the cord axis automatically while the permeability is sensed. The cord is then fixed in a position of highest or lowest detected permeability, so as to identify the location of the unique conductor, and the plug is then connected.

Abstract: An audio cable in which a plurality of outer conductors surround one or more inner conductors. The outer conductors provide a path for the relatively high frequency components of the signal and the inner conductors provide a path for the relatively low frequency components of the signal. The length of each outer conductor is greater than the length of the inner conductors and the outer conductors are wound around the inner conductors so that the frequency components of the signal arrive at the end of the end of the cable at the same time.

Abstract: A flexible free-stripping composite cable assembly having a plurality of groups of electrical conductors including power supply, telephone and CATV/DATA conductors. Each group of conductors is contained within a distinct portion of a common insulation jacket. The jacket portions are connected by integral webs for hinged flexure relative to each other to facilitate alteration of the cross-sectional configuration of the cable assembly. The power supply conductors are separated by a dielectric spacer and surrounded by a flexible metallic shield which is in electrical contact with an uninsulated one of the power supply conductor throughout a substantial portion of its length.

Abstract: The cable includes a flat cable including a plurality of elongate conductors enclosed in an insulative casing and a drain wire supported thereon. A wire mesh ground shield overlies the casing in contact with the drain wire along its length. An upper layer of insulation overlies the ground shield and includes at one of its marginal edges a strip of insulative material extending longitudinally in registry with the drain wire. The strip provides a barrier against bonding of the insulative layer to the drain wire and to the casing material adjacent the drain wire thereby preventing pullout of the drain wire during separation of the cable core, wire mesh and layer for termination purposes. Strippability of the cable is facilitated by the non-adhesion to the strip whereby a marginal access region is provided for grasping the mesh, cable core and layer.

Abstract: A cable which provides suitable shielding over a relatively wide range of frequencies includes a core (22), and inner shield (32), an outer shield (34) which engages electrically the inner shield, and a jacket (60). Each shield is a laminate which includes a metallic layer comprising a suitable metallic shielding material and a plastic layer. The inner shield has its plastic layer (38) disposed toward the core whereas the plastic layer (52) of the outer shield is oriented toward the jacket. Also, each shield is formed with an unjoined, longitudinal overlapped seam. In order to insure continued shielding when the cable is flexed, the longitudinal seams of the cable are displaced from each other as measured in a direction circumferentially of the core.

Abstract: An improved high electrical current conductive marine sweep cable. The cable includes an elongated flotation core having electrical conductors juxtaposed to the outer surface thereof with thin insulation about each of the conductors, providing high thermal conductivity therethrough. An outer jacket surrounds the associated insulated conductors and core. Structure is arranged to conduct seawater radially through the jacket for effecting heat transfer between the conductors and the ambient seawater suitable to prevent the temperature increase in the conductors resulting from the desired current flow therethrough from rising above a preselected maximum value preventing degradation of the cable.

Abstract: The combination of a metallic grounding clip and a shielded, jacketed flat cable of the type including a main portion having a plurality of spaced signal conductors, an offset portion including a drain wire, and a metallic shield which encompasses the signal conductors and extends into the offset portion in contact with the drain wire. The clip has a first leg, a second leg, and a web joining the legs and defining therewith a channel for receiving the offset portion. At least one of the legs has a termination member for piercing the offset portion to contact the drain wire. Thus the clip can be attached to the cable remote from the signal conductors at any desired location along the length of the cable and the shield of the cable can extend to the cable ends.

Abstract: A combined power and sensing cable for inter-connecting an EDM power supply and machine tool including a pair of power conducting leads (14,16), each having a non-conducting sleeve (18a, 20a) and a plurality of individual conductors (20) inside each such sleeve. A braided shield sleeve (22) encloses both the power leads. An external insulating jacket (12) encloses the braided shield sleeve (22). A plurality of sensing and control leads (28) are enclosed by a second braided shield (26) which in turn is enclosed by its insulating sleeve (24). The sensing and control leads (28) are aligned substantially parallel to the power conductor leads (14,16) intermediate their respective braided shield (22) and the external insulating jacket (12).

Abstract: According to the present invention, a shielded electrical cable comprises an outer layer of insulating material surrounding a signal conductor and an associated ground conductor and a common shielding layer in electrical contact with the ground conductor but separated from the signal conductor by an inner layer of insulating material surrounding the signal conductor, the signal and ground conductors extend in spaced parallel relationship in a common plane, each surrounded by an individual outer layer of insulating material, the two outer layers of insulating material being integrally formed with a web extending between the two outer layers of insulating material, the shielding layer extending about the inner layer of insulating material on the signal conductor, through the web, and about the ground conductor.

Abstract: In an electrical cable comprising a plurality of conductors extending in a spaced parallel relationship in a common plane surrounded by outer layers of insulating material joined by web portions, certain conductors are surrounded by inner layers of insulating material which are in turn surrounded by individual foil shielding layers, the shielding layers being interconnected and connected to at least one other conductor by a shielding connection member in the form of a foil which extends through the web portions of the cable.

Abstract: Novel discrete coaxial cable and coaxial cable assembly constructions are disclosed. One preferred embodiment of the invention is a flat coaxial cable assembly. The invention also provides a novel method for manufacturing the coaxial elements which are the primary structural components of the coaxial cables and assemblies. In this method a signal wire and at least one drain wire are embedded in a minor matrix of dielectric material. A portion of the minor matrix material is peeled or skived away to expose the drain wire or wires. The resulting product is then wrapped in metal foil so that the foil makes electrical contact with the exposed drain wires. This step yields a completed coaxial element. A single element may be embedded in a major matrix of dielectric to yield a coaxial cable or several elements may be so embedded to yield a coaxial cable assembly.

Abstract: A readily strippable electric wiring cable comprises two electrically insulated line conductors arranged substantially parallel to one another and transversely spaced apart within a surrounding extruded insulating sheath and a bare earth conductor which is loosely housed in a bore extending lengthwise within the sheath between and parallel to the insulated line conductors. Preferably, each line conductor is itself loosely housed in a separate bore in the sheath. Double insulation is provided between the earth conductor and each line conductor.

Abstract: An improved multilayer electric cable is disclosed having a conductive core, an extruded strand shield (ESS) layer, an insulating layer of polymeric insulation material surrounding the core and coaxial therewith, a semiconductive insulation shield (EIS) layer strippably bonded to the insulation layer surrounding it and coaxial therewith and, preferably, a plurality of axially extending drain wires disposed within the semiconductive EIS layer. The semiconductive EIS layer is formed of a copolymer of an ethylene/acrylate/monoalkyl ester of 1,4-butenedioic acid copolymer, conductive carbon black, a peroxide curing agent and polyethylene or polyethylene copolymer. The semiconductive EIS layer is applied by extrusion at elevated temperature in a dry gas atmosphere.

Abstract: An improved multilayer electric cable is disclosed having a conductive core, an extruded strand shield (ESS) layer, an insulating layer of polymeric insulation material surrounding the core and coaxial therewith, a semi-conductive insulation shield (EIS) layer strippably bonded to the insulation layer surrounding it and coaxial therewith and, preferably, a plurality of axially extending drain wires disposed within the semiconductive EIS layer. The semi-conductive EIS layer is formed of a copolymer of an ethylene/alkylacrylate/monoalkyl ester of 1,4-butenedioic acid copolymer, conductive carbon black, and a peroxide curing agent and preferably also a copolymer of ethylene and propylene or a copolymer of ethylene, propylene and an unconjugated diene. The semi-conductive EIS layer is applied by extrusion at elevated temperature in a dry gas atmosphere.

Abstract: A communication wire of flat construction has two or more pairs of communication gage polyolefin insulated wires, twisted along their length, disposed in groups on opposite sides and parallel to a conductive steel wire. The steel wire may be galvanized or copper clad. All of the foregoing are embedded in a PVC jacket with the PVC material bonded to the steel wire but unbonded to the insulated communication gage wires. Weakening lines permit separation into central and side parts with an intact PVC jacket on each part. When used as telephone drop wire the steel wire provides both physical support and electrical conductivity for supplemental or primary grounding. The wire shape and size permits use of existing hardware for installation. Alternatively, a group of wires on at least one side is replaced either by a coaxial cable or by one or more polyolefin jacketed optical fiber conductors.

Abstract: The cable comprises one or more layers of insulated conductors disposed in circumferentially spaced relation. At least one layer is surrounded by a flexible shield formed from a inner layer of metallic foil bonded to a layer of flexible plastic. A ground conductor in the form of an uninsulated metal wire or a semi-conductive wire is disposed in the conductor layer directly adjacent to the shield. The ground conductor and the insulated conductors all have approximately the same outside diameter. This promotes intimate contact between the ground conductor and the shield.The cable is used in modular conjunction with a connector which holds the cable in pressurized engagement within a cable receiving opening. The pressure produced by the connector insures that intimate contact between the ground conductor and the shield will be maintained. The connector is designed such that the pressure applied to the cable can be varied.

Abstract: A woven shielded cable assembly includes a woven cable (A) having a base weave pattern defined by warp and weft elements (14) and (16). A plurality of drain wires (B) are interwoven with and floated out of the base weave pattern at locations along the cable on both sides thereof to provide instantaneous and continuous draining of a conductive shield (C).

Abstract: An electrode and a lead wire therefor used with a device for measuring the electrical signals emanating from a living body, such as a cardiograph or electroenecephalograph employed for examination and diagnostic purposes. The electrode consists of two layers of finely divided electrically conductive material, that are printed in laminated fashion on the opposite surfaces of an insulating film. The lead wire comprises plural laminated layers of finely divided electrically conductive material on the opposite sides of an insulating film, the laminated layers being interspersed with or encased by carbon layers and insulating layers. Since X-rays penetrate the electrode and the lead wire, an X-ray photograph may be taken during visual inspection of the biosignals without the image of the electrode and the lead wire appearing on the film to hinder diagnosis.

Abstract: Welding cable and equipment wherein welding cable is color-coded and comprises respective composite cables that individually have as components a power cable and, attached thereto, a control cable. Color coding may be provided by paint, dye or other means at cable areas remote from natural wear areas. Preferably at least one of the cable elements of the composite welding cable will be provided with a durable rubber or other sheath that can accommodate heavy wear areas and abrasive conditions. Welding equipment is provided such that a maze of composite welding cables can be individually identified and manipulated, used and routed accordingly.

Abstract: A thin-profile electrical cable is rendered capable of enduring compressive and tensile loading encountered in under-carpet usage by encasing separately in the same flat pliable jacket the conductor to be protected and parallel to it one or more hard cable-like stress-carrying elements which are afforded free slippage within the jacket in the direction of their lengths. The jacket surface is scored by parallel grooves in the vicinity of the embedded conductor to cause compressive loads to be borne by the stress-carrying elements.

Abstract: A cable assembly for detecting the ingress of water inside a cable is disclosed. The cable assembly comprises a moisture detecting tape constructed of two parallel bare conductors laminated to an insulating substrate. The tape thus constructed is applied in an open helix around the conductor core of a cable. A suitable plastic jacket is extruded over the cable core and the moisture detecting tape. A shielding tape may also be applied over the cable core and the moisture detecting tape prior to extrusion of the overall plastic jacket. The cable thus constructed with the integral moisture detecting tape is adapted for connection to a suitable sensing apparatus at one end, and should moisture enter the cable as a result of damage to same, the electrical characteristics of the detecting tape would change and such change will result in a measurable conductance between the conductors of the moisture detecting tape. The ingressing water is thus sensed prior to penetrating and compromising the cable core.

Abstract: A cable for prospecting, said cable including a core of conductor wires (3) surrounded by insulating material (4) and by armour (7, 8) formed by at least one layer of helically wound steel wires. It includes, from its center to its periphery, inside the armour, an axial monofilament (2) made of a polymer that withstands high temperatures, said monofilament forming the insulation of an inner conductor (1), an outer conductor (5) and a sheath (6) made of a thermoplastic substance that withstands high temperatures, said inner conductor serving a different electrical function than said core of conductor wires.

Abstract: Two embodiments of a triboelectric transducer cable for generating a signal in response to movement or deformation of the cable each include multiple insulated central conductors, a semi-conductive wrapping separately surrounding each of the insulated central conductors with an additional conductor arranged in electrically conductive contact with the semi-conductive wrapping and a protective jacket surrounding the cable assembly.

Abstract: A shielded wire in which an insulation layer covered wire and a ground wire are both covered with a conductive material layer. The ground wire is covered, furthermore, with a conductive high molecular material layer. The latter and the conductive material layer are in mutual contact so that they are mechanically separable from each other and are, at the same time, electrically connected to each other. The conductive high molecular material layer may be made of conductive synthetic resin such as conductive polyvinyl chloride and the like, or of conductive rubber. The conductive material layer may also be made of the latter materials, as well as of metal.

Abstract: An electrical connecting cable having a central coaxial unit around whose outer conductor a layer of conducting wire is placed. Several coaxial units identical to the central unit are wound around the layer of wires, the whole being surrounded by a sheath having an outer cover of an insulating material. Preferably, seven units are wound around the central unit.

Abstract: Improved shielding members and electric cable constructions which utilize these shielding members are described. Various configurations of the shielding members can be used to enclose a single cable circuit consisting of one or more conductors in two concentric metallic shielding layers fabricated from a single shielding member which provides excellent electrical isolation for the cable circuit. Generally, the shielding members comprise an elongated ribbon of insulating material and a pair of elongated foil strips arranged in parallel relationship with the ribbon. The foil strips are bonded to opposite sides of the ribbon and each has an elongated edge generally in alignment with opposite elongated edges of the ribbon. The selective use of layers of heat sensitive sealing material for sealing the shielding layers protects the cable circuits from moisture.

Abstract: An improved shielding member and electric cable constructions which utilize this shielding member are described, the design of the shielding member allowing two cable circuits, each consisting of one or more conductors to be wrapped in and electrically isolated by a single shielding member. The shielding member comprises an elongated ribbon of insulating material and a pair of elongated foil strips arranged in a parallel relationship with the ribbon, the foil strips being bonded to opposite sides of the ribbon and each of the foil strips having an elongated edge generally in alignment with opposite elongated edges of the ribbon. The shielding member is wound in a generally S-shaped configuration forming two envelopes, each of the cable circuits being encased in, and electrically isolated by, one of the envelopes.

Abstract: A barbed wire construction. The construction includes an iron wire having a longitudinally extending groove therein. A copper wire, coated with insulation, is inserted into the groove and extends along the groove. The iron and copper wires are coated.

Abstract: A high-voltage electrical power cable comprises a substantially flat core (10) having a plurality of flexible power conductors (11), and insulating body (14) surrounding each power conductor, a ground wire (12), an insulated ground check wire (13); an outer jacket (20) surrounding the core; and a layer of semi-conducting material (30, 30a, 30b, and 30c) extruded about and in contact with the core. The ground wire is covered with a semi-conductive material in contact with the extruded layer to provide a current path to ground.

Abstract: A multi-conductor transmission cable which includes a plurality of parallel conductors each of which may be insulated with a relatively low loss, high velocity of propagation material. The insulations surrounding an adjacent conductor pair may be joined by a homogeneous integrally formed EMF window web formed of the same material as the insulations. The thickness and length of the window webs are selected to control the electromagnetic interference between the conductor pair, as well as the impedance and capacitance. Individual, uninsulated screen conductors may be positioned between adjacent conductor pairs to further minimize EMF interference. The insulated conductors, their EMF window webs, and the uninsulated screen conductors may be encapsulated by either upper and lower layers of laminated insulation or by an extruded outer layer formed of a material having a velocity of propagation different from the conductors' insulations.

Abstract: A cable assembly having a shielded conductor; the shielded conductor is formed by bonding a thin layer of conductive material to the outer surface of an insulated wire. The bonding may be achieved by coating the outside surface of the insulated wire with a metallic particle and solvent solution, and then heating the coated wire to flash off the solvent and achieve the desired bond. The outer conductive layer may be grounded by positioning grounding means adjacent thereto prior to encapsulation in an outer insulating jacket. The grounding means preferably takes the form of a center ground wire surrounded by a semi-conductive material whose outer diameter is substantially the same as that of the shielded conductor. The semi-conductor material contacts the outer conductive layer along its length, and physical and electrical contact is maintained by the outer jacket.

Abstract: A shielded wire having a central core and an insulation layer coated thereover. A shield layer separates the insulation layer from a ground wire and is formed by a composite tape having a metal surface and an adhesive surface. The metal surface is longitudinally folded to cover a portion of the adhesive surface and the tape is helically wound with the folded surface on the outside to form alternate helical patterns of the metal and adhesion layers. A sheath covers the shield layer and the ground wire and is bonded to the adhesive layer while the ground wire is in contact with the outside metal layer. The inside metal surface forms the shield.

Abstract: A construction for an electrical cable which carries an underwater transducer and is repeatedly reeled onto and from a hoist in a helicopter into the ocean to substantial depths. The cable includes a coaxial construction of copper conducting wires including a center conductor wound in a helix angle around a nylon center rod with the wires covered with a significant layer of polypropylene insulation and a tubular construction of fine copper wires wrapped around the polypropylene insulation in a helix angle and, in turn, wrapped with a copper-mylar tape with the copper layer adjacent the conducting wires. The tape is covered with a layer of polyvinylchloride insulation covered with an open-weave light Dacron braid bedding layer. The bedding layer serves to distribute forces from the armor layers which consist of a first layer of steel wires wound in a helix angle smaller than that of the conducting wires and in the opposite direction.

Abstract: A multi-signal transmission line is formed of a flat cable having a plurality of generally parallel conductors embedded in a dielectric core material, with an insulator jacket encasing the flat cable and being made of a dielectric material having a higher dielectric constant than the dielectric core material of the flat cable. The resulting composite transmission line cable insures that substantially all of the transverse electromagnetic propagation field created by the passage of a fast rise time pulse in a signal conductor is confined to the geometric area of the cable and the cable functions in a manner to greatly reduce the far end line-to-line interference (crosstalk) between the signal conductor and adjacent quiet lines.