Abstract: A flexible stranded body, such as an electric conductor of an overhead electric transmission or distribution system, comprises at least one stranded layer of elongate elements of metal or metal alloy, at least one elongate compartment within and extending throughout the length of the stranded body and, loosely housed in the elongate compartment, at least one separate optical fibre and/or at least one optical bundle. Preferably, the elongate compartment extends within a circumferentially rigid central core which is surrounded by the stranded layer or layers but it may be a bore in an elongate element of a stranded layer or an elongate space bounded by two adjacent elongate elements.

Abstract: There is provided a hybrid cable comprised of a plurality of optical fibers and metal conductors wound at a common lay angle. At least the metal conductors are sheathed by a fiber-reinforced resin and are prevented thereby from hockling.

Abstract: A flexible stranded body, such as an electric conductor of an overhead electric transmission or distribution system, comprises at least one stranded layer of elongate elements of metal or metal alloy, at least one elongate compartment within and extending throughout the length of the stranded body and, loosely housed in the elongate compartment, at least one separate optical fibre and/or at least one optical bundle. Preferably, the elongate compartment extends within a circumferentially rigid central core which is surrounded by the stranded layer or layers but it may be a bore in an elongate element of a stranded layer or an elongate space bounded by two adjacent elongate elements.

Abstract: An optical fiber submarine cable comprising at least one optical fiber. A pipe-like pressure resisting layer is produced by forming a tape-like pressure resisting material into a pipe-like configuration with the optical fiber inserted therein. The pressure resisting layer has butt ends in its cross section, and a waterproof insulator layer is disposed closely around the pipe-like pressure resisting layer for maintaining the pipe-like configuration of the pipe-like pressure resisting layer and for preventing seawater from entering into a gap between the butt ends.

Abstract: A liquid detection device for energizing a warning signal. An electronic switch, of the non-latching type, is provided for coupling a source of electrical energy to a warning device responsive to a first signal at the inputs thereof. An elongated probe is provided having at least two generally parallel conductors enclosed in an insulative sheath having a plurality of apertures therein for exposing adjacent sections of the conductor. The conductors are coupled to the inputs of the electronic switching device for generating the first signal responsive to moisture being operatively coupled over the apertures between the conductors. The probe is of sufficient length in order to form a perimeter about the area in which the liquid is to be detected.

Abstract: A torque balanced cable for towing or suspending oceanographic instrumenton includes a data transmission core about which is wound a helically laid inner layer of load bearing strands formed of high tensile strength, low stretch aramid fiber and having a selected pitch angle, pitch diameter and strand thickness. An outer composite layer is contrahelically wound about the inner layer and an interposed, abrasion resisting barrier film layer, and includes alternating load bearing strands and non-load bearing filler strands, the other load bearing strands having the same degree of pitch angle and thickness as the inner strands and of a number that bears substantially the same ratio to the number of inner strands as the pitch diameter of the inner layer bears to the pitch diameter of the outer layer.

Abstract: A conductive cable having a conductive core and a protective jacket of plastic material moulded around the core, also contains a guide member, in particular a guide tube, below the jacket and into which a jacket slitting tool can be inserted.By pushing the slitting tool along the tube, the jacket can easily be slit, the tool cutting through the side of the tube adjacent the jacket whereas the side of the tube adjacent the core guides the tool along the cable and protects the core from damage by the tool.If the cable contains metal screening, the guide tube is located between the screening and the jacket.

Abstract: A seismic type electrical multiconductor cable. It is made up with a predetermined length of cable, and has a number of geophone takeout connectors spaced along that length of cable. These takeouts are electrically connected to individual geophone circuits. Half go to pig-tail connected plugs at each end, and there are program circuits that may be plugged into the pig-tail plugs.By arranging the takeouts in pairs, physically on the same conductor but electrically isolated, only half the number of conductors are needed. There are additional conductors in the cable with multi-circuit connectors at each end. The cables are symmetrical and may be laid out end-to-end. A spread of cables would be made with connection to a recording station centrally of the spread.

Abstract: A submarine communications cable comprising a plurality of optical fibres extending longitudinally, an electrically conductive tube surrounding the plurality of fibres with radial clearance, the electrically conductive tube allowing the transmission of electrical power between repeaters and being rigid so that when incorporated in the cable it resists hydrostatic pressure at the sea bed.

Abstract: An optical fiber cable, particularly for submarine cable use, has its fibers enclosed within a tubular electrical conductor which is itself overlayed by a dielectric layer. This layer is itself overlayed by a strength member formed of closely adjacent wires.

Abstract: A cable having an outer protective covering or sheath enclosing one or more insulated conductors and a cutting wire or rip cord intended for slitting the sheath, the cutting wire being attached to the sheath's inner surface and/or the core in order to prevent the cutting wire from slipping out of the cable.

Abstract: A fiber optic cable has a central strength member formed by a wire with helical grooves in each of which is laid an insulated optical fiber. Steel wires are wound over the strength member plus fibers with the direction of lay of the wires opposite to that of the helical grooves so as not to crush the fibers. Also described is a jointing technique for a pair of such cables.

Abstract: A unitized marine umbilical cable carrying any number or combination of conventional elements such as hoses and electrical cables. A center stress member disposed along the axis of the marine umbilical cable is capable of supporting an underwater device such as a diving bell should the primary down line break. Cylindrically surrounding the stress member is a compression extrusion of a high strength highly resilient elastomer around which are helically cabled various conventional elements. Within the interstices between the high strength elastomer and the helically cabled elements is a resilient fill material. The resilient fill material and high strength highly resilient, low durometer elastomer serve as a radial shock absorber against tensional impact upon the umbilical or radial forces thereupon.

Abstract: An electrical cable of the self-floating type for use in marine environments is provided with elements for taking up mechanical tractive forces. The electrical conductors of the cable are surrounded by an inner friction layer with a low friction coefficient. Around this layer a force equalizing layer of metallic material is provided and this layer is surrounded by a tube of plastic material showing a number of circumferentially situated grooves. An outer friction layer of the same material as the inner friction layer surrounds the hollow strands and the whole system together with the elements for taking up the tractive forces is embedded by a cable mantle of rubber-like plastic material.

Abstract: This invention provides a coaxial cable of the type comprising a central electric conductor and a peripheral electrically conducting screen separated from one another by a solid dielectric, this cable further comprising optical fibres embedded in the dielectric and symmetrically distributed between the central conductor and the peripheral screen.

Abstract: A repeatered submarine cable has a composite inner conductor for accommodating a system of optical fibers therein. The cable strength members include a central elongated filament and plural layers of stranded steel wires separated from the central filament by an annular insulating core member, in which the optical fibers are embedded. A metallic tubular jacket surrounds the stranded steel layers to provide both a DC path for powering the optical repeaters and a hermetic moisture barrier for the fibers.

Abstract: An improved seismic array and method of seismic exploration are provided which have the capability to supply data to separate recording stations simultaneously. The seismic array has a plurality of seismic detector connection points, and a seismic detector is located at each seismic detector connection point. The outputs of the seismic detectors are electrically isolated from each other, and weighting may be applied to the output of each seismic detector in the array. Two signal-carrying media are also provided in the array, and the weighted outputs of the seismic detectors are conveyed to the first end of the array over one signal-carrying medium and to the second end of the array over the second signal-carrying medium. A Chebychev weighted array is achieved by a proper selection of weighting.

Abstract: A simplified cable system for use in gathering S analog signals into each of T array terminals (AT), spaced apart a distance D, where the analog signals are amplified, digitized, stored and, on command, transmitted as trains of digital bits along a digital conductor pair in the cable system, to successive ATs downline, to a recording unit. In the optimum embodiment, the cables are all identical, are plugged into each of 2 ports, or receptacles, in each AT. The cables are D/2 long, have S/2 conductor pairs, and S/2 takeouts spaced D/S apart, each takeout connected to a different conductor pair. Each cable contains at least one digital conductor pair. Two cables in series connect between adjacent ATs. The plugs joining one cable to the next, connect only the digital conductor through from cable to cable, while the analog conductor pairs are dead ended at the joining plugs.

Abstract: The method and apparatus of the present invention are described in which connection (and disconnection) of a plurality of geophones associated with a digital seismic data acquisition system is greatly simplified without sacrificing flexibility as to the number of geophone flyers per station or the interval spacing per station and also without the addition of separate subcabling in the internal linkage of the flyers to the field digitizing equipment. The apparatus includes a multiple-phone flyer-jumper connected to each channel of a remote data acquisition and telemetering circuit (RDATC). Each RDATC acts in combination with a group of geophone flyers, say four, to store, amplify, filter, gain control and digitize analog data from the flyers and then telemeter the data to recording circuitry in the field truck. In accordance with the present invention, each jumper-flyer includes a central multi-conductor cable segment terminating at each of its ends in the central leg of a multi-armed connector.

Abstract: A single composite cable is deployed between adjacent monitoring stations r sensing an intruder. A number of piezoelectric elements disposed in the cable provide electrical intrusion signals when they are disturbed. Power and triggering pulses for the stations are fed through the cable by a pair of electrical conductors and optical signals representative of the intrusion signals are fed through at least one optical fiber. As a result, the composite cable is relatively lightweight and compact to simplify deployment and it avoids the problems normally associated with crosstalk.

Abstract: A multiple optical fibre cable in which the fibres can be used separately for long distance signal transmission comprises a central core round which the optical conductors are concentically disposed. Each optical conductor is constituted by an optical fibre protected by a first layer or covering of polyamide and a second layer or sheath of polyethylene. In order to avoid distortion of the optical fibre, the second layer or sheath is stretched. Application: Optical telecommunications cables.

Abstract: The method and apparatus of the present invention are described in which connection (and disconnection) of a plurality of geophones associated with a series of stations of a digital seismic data acquisition system is greatly simplified without sacrificing flexibility as to the number of geophone flyers per station or the interval spacing per station and also without the addition of separate subcabling in the internal linkage of the flyer to the field digitizing equipment. The method utilizes a multiple-phone flyer-jumper connected to one channel of a series of channels of a remote data acquisition and telemetering circuit (RDATC). Each RDATC acts in combination with a group of geophone flyers, say 1, 2, 3, etc., to store, amplify, filter, gain control and digitize analog data from each group of flyers and then telemeter the data to recording circuitry in the field truck.

Abstract: A gas feeder pipe assembly includes a central duct capable of functioning as a gas feeder pipe and a plurality of pairs of electrical conductors in a unitary structure. The gas feeder pipe is located at the center of the structure, and the conductors surround the pipe in an oscillating lay. The pipe and the conductors are wrapped in a polyester film and enclosed in a coated aluminum sheath. A polyethylene jacket bonded to the aluminum sheath provides the outermost protection for the assembly.

Abstract: Electrical conducting devices are provided which are composed of a flexible core member, such as a plastic or glass filament, having bonded to its outer surface a plurality of conducting strips which extend longitudinally along the core member for substantially the entire length thereof. In one form, one or more transducers are deposited or otherwise secured to the core member, such as at the end thereof, and are electrically connected or coupled to the conducting strips to form part of a circuit composed of said strips.

Abstract: A yarn or fiber is incorporated into the jacket of a long suspended small ameter cable for reducing low velocity current cable strumming in water. The yarn or fiber comprises at least one-quarter of the strands of a braided cable. A nap or mossy cable effect is produced when the jacket is brushed.

Abstract: A non-metallic, high strength, high temperature resistant external or internal strengthening for fiber optics cables is provided. The strengthening may be in various forms such as internally deployed filaments, outer woven mesh fibers, segmented cylinders, helical wrap ribbon, etc., and is made from single high-strength crystal fibers preferably of sapphire, i.e. .alpha.-Al.sub.2 O.sub.3. The non-conductive strengthening crystals have a low density, are highly crush resistant and meet severe environmental fiber optic sensor and data transmission requirements.

Abstract: A self-supporting cable, more particularly a vertical riser, borehole, dredger and mine shaft cable is disclosed. The self-supporting cable comprises a cable core, a jacket surrounding the cable core and having one or two diametrically opposed sections of increased thickness, and at least one supporting member totally embedded in each jacket section of increased thickness and disposed parallel to the longitudinal axis of the cable. The supporting member preferably consists of wire ropes made of plural elementary strands wound around a central strand, each strand comprising plural individual wires twisted together.

Abstract: An elevator system including an elevator car mounted for vertical movement in the hoistway of a building, and a plurality of traveling cables which interconnect the elevator car and a junction box in the hoistway. The plurality of traveling cables are bundled to track as a single cable by a plurality of spaced retainer devices. Each retainer device includes a first portion which is tightly secured to one of the traveling cables, and a second portion which loosely encircles all of the traveling cables.

Abstract: The method and apparatus of the present invention are described in which connection (and disconnection) of a plurality of geophones associated with a digital seismic data acquisition system is greatly simplified without sacrificing flexibility as to the number of geophone flyers per station or the interval spacing per station and also without the addition of separate subcabling in the internal linkage of the flyers to the field digitizing equipment. The apparatus includes a multiple-phone flyer-jumper connected to each channel of a remote data acquisition and telemetering circuit (RDATC). The latter in turn is linked to a central control and recording station usually located in a truck. In accordance with the present invention, each jumper-flyer includes a central multi-conductor cable segment of say N+1 conductors where N is an even positive number greater than two, such as 4, 6, etc., terminating at each of its ends in the central leg of a multi-armed connector.

Abstract: The method utilizes a multiple-phone flyer-jumper connected to one channel of a series of channels of a remote data acquisition and telemetering circuit (RDATC). Each RDATC acts in combination with a group of geophone flyers, say 1, 2, 3, etc., to store, amplify, filter, gain control and digitize analog data from each group of flyers and then telemeter the data to recording circuitry in the field truck. Each flyer group can be flexibly made up of two, three, four or more flyer-jumpers; each flyer-jumper includes a central multi-conductor cable segment of say N+1 conductors, where N is an even positive number greater than two, terminating at each of its ends in the central leg of multi-armed connector. A plurality of series/parallel connected geophones, say nine in number are used in combination with the central segment.

Abstract: A cable for dielectric optical waveguides has the dielectric optical waveguides arranged in segmented compartments. Tensile members are provided in the core of the cable and/or externally of the segmented compartments. This particular cable construction prevents the dielectric optical waveguides being subjected to excessive tensile stress.

Abstract: An improved seismic array is provided which has the capability to supply data to adjacent recording stations simultaneously. The seismic array has a plurality of seismic detector connection points, and a seismic detector is located at each seismic detector connection point. Dual weighting of the output of each seismic detector in thearray is achieved by connecting dual resistors to the output of each seismic detector. Two pairs of wires are also provided in the array, and one pair of wires interconnects one weighted output of each seismic detector to the first end of the array. The second pair of wires interconnects the second weighted output to the second end of the array. An amplifier is provided for use at either or both ends of the array, and a feedback network, including a resistor, is associated with the amplifier.

Abstract: A rectangular loading coil case has front, back, side and end panels, with cable entry and exit provided in one end panel, and with a support structure attached to, for example, the front panel and comprising rods extending across the case with a series of beams extending in opposed pairs and supported on the rods by spacer members positioned on the rods. Assembled magazines of loading coils are supported on the beams, each magazine supported at one end by one of a pair of beams and supported at the other end by the other of the pair of beams. A plurality of magazines are carried by each pair of beams, to form a layer. The number of layers can vary.

Abstract: Loading coils for communications cables are preloaded into magazines and prewired to terminal strips carried on the magazines. A magazine comprises a length of material, typically extruded or molded plastic material, of a channel shaped cross-section to accommodate the coils flat and side-by-side. End caps fit on each end of the magazine to retain the coils in position and also serve as mounting means in a casing. The terminal strips are mounted on an extension of one wall of the channel shaped cross-section. The preassembled magazines are then assembled in the casing a higher packing density is obtained, and the prewiring of the coils to the terminal strips provides effective orientation of the coils relative to each other to give good electrical and electronic separation and reduced cross-talk.

Abstract: Receiver of continuous structure adapted to be laid on the ground surface or underground, for seismic prospecting on land, comprising at least one support member for geophones, made of a flexible material having an elongated central portion and two lateral portions defining therewith at least one recess, said geophones being fastened to the central portion of the support member and coupled to the earth therethrough and said lateral portions being provided with longitudinal channels housing conductor cables.

Abstract: A turn-back protector securable within the return bend of a multi-conductor sheathed cable to limit the minimum radius of a return bend in the cable thereby protecting the cable from too severe bending. The protector is particularly useful in connection with butt cable splices and cable dead ends, whether under ground or above ground.

Abstract: An electric cable comprising a reinforcing member including a roving of strands of reinforcing elongated fibers and synthetic resin having the weight of 15 to 50 percent as against that of the strands and bonding the strands of the roving. The reinforcing member may be in the form of an armoring member, a tensioning member and an insulation.

Abstract: A cable end connection to a loading coil case has a lead sleeve crimped over the cable end, with a layer of sealing compound between the lead sleeve and the outer protective sheathing of the cable. The metal sheath of the cable is exposed at the cable end by removal of the protective sheathing for a short distance and the end of the lead sleeve is soldered to the metal sheathing. A tube extending from the end of the loading coil case is a close fit over the lead sheath, the outer end of the tube soldered to the lead sheath.

Abstract: A loading coil assembly comprises a casing having discs at each end. At the inlet end a support disc is mounted on and spaced from the end disc and a plurality of assembled magazines holding loading coils is attached at one end of each magazine to the periphery of the support disc. A similar support disc interconnects the other ends of the magazines, the magazines extending in a circle about the casing axis. Further circles of magazines can be added by providing one or more annular rings attached to the end disc carrying the support disc, for attachment of the magazines at one end, and also interconnecting the other ends of the additional circles of magazines by annular rings. The conductors can be fed along spaces between adjacent magazines. The casings vary in size according to the number of circles of magazines.

Abstract: This invention carries a power cable from a floating power plant to a fixed connection from which the power cable can transmit to a distributing system on shore. The cable support distributes the bending of the cable over a length of cable so that no deterioration of the cable occurs as the result of successive bending and unbending with the tidal motion of the floating power plant. A jointed cover protects the cable support from exposure to the weather and from icing.

Abstract: Apparatus and method for terminating flat flexible telephone lines laid flat on the surface of a floor to be covered by flexible floor covering such as carpeting are disclosed, wherein a bracket having a peripheral flange and an opening surrounded on two sides by raised flanges and adapted to receive the telephone lines to be terminated is placed on the floor over the lines and is fastened to the floor. Female telephone connectors are mounted across the raised flanges over the opening, and the telephone lines are brought up through the opening and are connected thereto. A shallow temporary cover is mounted on the bracket to cover the opening, the telephone lines extending therethrough and the female telephone connectors but not the peripheral flange. The flexible floor covering is laid over the floor, the lines and the covered bracket.