Abstract: A cable splice enclosure made up of: (1) a splice enclosure tube having two compressible ends with annular ledges inside the compressible ends; (2) first and second compressible grommets adapted to be inserted into the compressible ends; and (3) two outer shells adapted to be fastened to said first and second compressible ends of the cable splice enclosure tube. The outer shells have an inclined outer end portion that: (1) holds the compressible grommets in abutted relation to the annular ledges; and (2) compresses the compressible ends, which, in turn, radially compresses the grommets to form a watertight seal around the cables to be spliced. In a different embodiment, which is suitable for enclosing butt-splices, the splice enclosure tube has an open compressible end and a closed end. The open compressible end of the butt-splice enclosure tube uses the same parts and works the same as both ends of the splice tube extender.

Abstract: A wiring system by which a high voltage AC current is transported from a transformer to a neon light in a manner to reduce arcing and therefore fire potential, employing a flexible cable having a central current carrying electrical conductor, a symmetrical layer of insulation concentrically surrounding the central conductor, and a symmetrical circumferential layer of shielding conductor surrounding the layer of insulation, and at least one connector for connecting the flexible cable to another piece of equipment, the connector providing a central electrical conductor and a concentric shield grounded to the piece of equipment so that a symmetrical relationship of a central current carrying conductor within a concentric conductive shield providing a concentric and substantially uniform electrostatic field and continuity of ground is maintained throughout the system.

Abstract: An enclosure for protecting cable splices having a pair of outer shells, a pair of inner shells, an extender between the pairs of inner and outer shells, and clips inside the inner shells for resisting forces applied to the spliced cables that would tend to separate the spliced cables. The cables to be spliced are passed through a hole in the outer shell, inner shell, and compressible grommets in the inner shells, and space for the cable splices is provided by the extender tube. As the outer shells are threaded onto the extender tube, a seal is formed around the splice by the compression of the grommets and the joining of the inner ends of the inner shells with the ends of the extender tube.

Abstract: A coupling apparatus and method for joining together lengths of electrical conduit in a conduit system. The coupling apparatus includes a resealable port that permits lubricant to be introduced into the coupling apparatus to facilitate wire pulling through a conduit system and to reduce strain on the insulation material of the wire. The coupling apparatus is a generally T-shaped tubular structure and includes a pair of axially-aligned conduit receiving openings which define an inlet and an outlet, respectively. The inlet and outlet openings are spaced a distance apart from one another by a central chamber. The central chamber has an inner tubular diameter substantially equal to the inner tubular diameter of the conduit to be joined in order to provide a smooth transition for wire being pulled through the coupling apparatus. The resealable lubrication port is defined by a vertically oriented tubular leg portion and removable threaded plug which are joined to a middle section of the central chamber.

Abstract: A flexible pipe coupling is constructed for flexibly interconnecting pipe sections especially in a vacuum toilet system on board an aircraft. For this purpose each coupling member of a pair forming the coupling has a bushing for connection to a pipe end by a hose clamp, a flange integrally connected to the bushing, and a support ring for backing the respective flange but permitting the flange to retain a certain flexibility. Each support ring has a conical circumferential rim. The coupling also includes a clamp member encircling with radially inwardly facing conical surfaces the radially outwardly facing conical rim of both support rings to clamp the coupling members together. The clamp member has a threaded or snap device for applying the clamping force.

Abstract: An arrangement for multiple cable introductions into cable sleeves composed of a seal or end member having a plurality of cable introduction nipples characterized by the introduced cables being received in the introduction nipples and being sealed thereto with shrink hose sections. The cable introduction nipples are fixed pressure-tight in admission bores of the seal member or at admission nipples which are provided at the admission bores of the seal members by utilizing nuts engaging threads on one of the nipples and entrapping a sealing insert.

Abstract: The wire splice enclosure of the preferred embodiment provides a two-piece sealable cylindrical enclosure having a tension plate at each end formed parallel to the axis of the enclosure. Each tension plate is formed with a serpentine concave track of a size adapted to snugly receive a wire for splicing, with a hole adjacent the track inner end sized to allow the wire to snugly pass through into a chamber area. A pair of hooks within the chamber area provides support for the wire ends after splicing. The two pieces of the chamber are adapted to seal together with a quarter turn locking motion.

Abstract: An insulator (100) wherein a funnel portion (120) has a conical inner peripheral surface (121) of an inner diameter increasing in a direction away from a body (101). A male terminal (second terminal) (161) is inserted into the insulator (100) from the funnel portion (120) to mate with a female terminal (first terminal) (151) housed in the insulator (100), and a jig (170) is prevented from interfering with an edge of the funnel portion (120) of the insulator (100) as the male terminal (161) is securely pushed into the female terminal (151), thereby preventing connection failure between the first and second terminals. If the path of insertion of the male terminal (161) is shifted so that the male terminal (161) abuts against the inner peripheral surface (121), the path is corrected along the slope of the inner peripheral surface (121), facilitating the insertion of the male terminal (161).

Abstract: An improved cable splice of the type in which first and second ends of a casing taper conically toward the casing's longitudinal axis. First and second cable-receiving apertures are provided in the respective first and second ends of the casing. A first set of cable-gripping jaws is disposed within the first end of the casing; and, a second set of cable-gripping jaws is disposed within the second end of the casing. At least one spring is provided within the casing, between the jaws, to urge the first and second jaws toward the first and second apertures respectively. A first plug is positioned within the inner end of the first set of jaws to bias the first set of jaws against the spring by forcing the jaws radially outwardly. A second plug is positioned within the inner end of the second set of jaws to bias the second set of jaws against the spring by forcing the jaws radially outwardly. The plugs are free of connection to the jaws.

Abstract: An assembly for forming a semi-permanent electrical connection between a pair of wires (1,2) comprises a male push-fit connector (3) and a female push-fit connector (4).Each connector (3,4) has a connection part to enable it to be connected to the wire, e.g. in the form of a crimp (5,6) and a mating part for engagement to the other connector. Each of the connectors has a sealing jacket (8,10) for sealing the connection to the associated wire, and one of the connectors has a heat-recoverable skirt (11) which, when the connectors are engaged, extends over part of the sealing jacket of the other connector to seal the connection against moisture ingress. The skirt (11) is provided with a layer of adhesive for forming the seal.

Abstract: An electrical connector having a wire-holding plug for holding a plurality of insulated wires with their bare ends protruding inwardly or rearwardly, a conducting coupler made of electrical conductive material squeezably enclosing the bare wire ends protruding from the plug, and a protective cap embedded with the conductive coupler and engageable with the plug, so that upon an insertion of the wire-holding plug containing the wires to be connected into the protective cap, the bare wire ends protruding from the plug will be squeezably surrounded by the conductive coupler within the protective cap for a convenient electrical connector.

Abstract: A system for electrically connecting a first power cable end to a second power cable end, the system including a first probe adapted to be electrically connected to the first power cable end, a second probe adapted to be electrically connected to the second power cable end, and a cable splice including a first female contact assembly adapted to engage, in electrically connection therewith, the first probe, and a second female contact assembly electrically connected to the first female contact assembly and adapted to engage, in electrical connection therewith, the second probe.

Abstract: A wire splicer device for connecting electrical conductors includes a flexible sleeve formed of a non-conductive material and having a pair of openings therein. A pair of elongate arms are integrally connected with the exterior surface of the sleeve adjacent one end thereof and extend longitudinally towards the other end of the sleeve. The free end of each arm has a pressure element extending therefrom towards one of the openings in the sleeve. An elongate rigid electrically conductive splicing member is positioned within the sleeve and includes end elements, each having penetrating teeth struck therefrom. The teeth on the splicing member penetrate the insulation on the conductors to thereby electrically connect the conductors together and lock the conductors in the sleeve.

Abstract: A splicing device to join the free ends of two cables. The present invention provides a non-conductive housing assembly around a possibility of three inner conductive connector means. The inner conductive connector means joins the free ends of a conductive cables such that there is an uninterrupted electrical flow path between the ends of the cables. The connector housing provides a protective outer housing around the assembly and holds the spliced ends of the cables together. The splicing device can be readily installed to provide a safe and reliable splicing of free cable ends.

Abstract: A cable conduit for textile machines houses the supply cables, ground plates and motor bars which are connected to the ground plates, for the drive and control of an individual drive of the textile machine. The cable conduit has a housing, a detachable cover provided on the housing, and an intermediate cover connected to the housing. The intermediate cover divides the housing into a partial conduit which is not accessible to the outside adapted to receive the supply cables, and a portion which is covered by the detachable cover and adapted to receive the ground plates and motor bars. Grooves formed in the housing securely receive the ground plates in the portion of housing covered by the detachable cover.

Abstract: Jointing clamp (1) intended for electrical conductors and comprising an insulating, conical outer housing (2) having arranged therein a similarly conical inner sleeve (3). The narrow end of the outer sleeve (2) has located internally therein a seat (7) against which a metal ball (6) is locked by the inner sleeve (3) in a manner to fully close the narrow end of the inner sleeve. The outer sleeve (2) is extended with a tubular part (9) which surrounds a through-passing hole (10) in the seat (7) and thus forms a protective tubular device through which access can be had to the metal ball (6) with the aid of a test probe but which will prevent unintentional finger contacts with the ball. This enables electrical measurements to be made safely at joint locations without the need to remove the jointing clamps therefrom.

Abstract: An explosion-proof electrical conduit sealing fitting for threadedly engaging at least two threaded conduits and surrounding at least one conductor running through two threaded conduits includes a first element having a portion threadedly engaging at least one of at least two threaded conduits; a second element having a portion threadedly engaging at least one of the at least two threaded conduits, and connections for the first element and the second element. When properly connected and screwed into place, the sealing fitting of the present invention completely surrounds the at least one conductor and threadedly engages all of at least two threaded conduits.

Abstract: Splices in multi-wire cables are orderly when wires of the same length, each affixed to a pluggable connector, are joined and the connectors are rotated 180 degrees to maintain the wire pairs orderly and are bundled.

Abstract: A current-carrying screw connection between two tubular conductors located in a high-voltage switching installation having a metal encapsulation and insulated with compressed gas comprises radially oriented screws and a tubular shield, the screw heads being disposed inside the wall of the shield. The shield extends in a longitudinal direction over the ends of the two conductors and covers the butt joint between them. The shield is connected to each conductor via screws which are disposed within a region having a maximum circumferential extent of 180.degree..

Abstract: An improved wire terminal is provided in which an internal coiled spring wire clamping member is opened with the usual clockwise twist of the wire terminal when wires are inserted into the wire terminal, with an intermediate portion of the spring initially contacting the wires as they are inserted into the wire terminal such that the clockwise rotation opens an upper spring portion anchored at its end to the wire terminal. In one embodiment, the portion of the spring contacting the inserted wires is open at the top and has a parallel running portion, such that with the wires held in position manually, the rotation in the clockwise direction permits further insertion of the wires up through the parallel portion of the spring and into a cavity at the top of the wire terminal. Release of the wire terminal causes the spring to collapse on itself to squeeze the wires together, thereby preventing dislodging of the wire terminal as by vibration.

Abstract: To provide an electrically conductive path between metal pipes, e.g. soil or drain pipes, connected at butting ends by means of an annular gasket of electrically insulating material which fits around and spans the butting ends and is secured in sealing engagement with the butting ends by clamp, a bridge element of electrically conductive material retained to the gasket extends between and engages with the pipes. The bridge element is conveniently an attachment to the gasket having portions disposed at internal and external circumferential surfaces of the gasket. Teeth or like formations on the bridge element dig into the surfaces of the pipes to enhance the engagement. Electrically conductive engagement may also be made with the clamp at a portion of the bridge element at the exterior of the gasket.

Abstract: A conductive flange is set forth for a fitting such as a conduit. The flange is non-conductive including at least one strand of conductive yarn in conductive contact with the conduit and extending to the flange rim where it intersects one or several bolt holes.The flange is conductively attached to the conduit such that any static electrical charges are conducted by the yarn to the ounting bolt or bolts disposed in the bolt holes. The bolts are grounded to, in turn, ground the static charge and prevent sparking.

Abstract: A push-in electrical wire connector for interconnecting at least two electrical wires includes a housing and a wire-clamping member mounted therein. The clamping member has apertures through each of which a respective conductor is insertable, and a resilient clamping portion extending lengthwise of the housing in an overlying relationship with an interior support wall. Due to its resilience, the clamping portion deflects from an initial position to a deflected position in which the clamping portion electromechanically engages and constantly urges the inserted conductor against the support wall.

Abstract: A gas measurement probe has a casing (11) equipped with a closure shell (17) on its end away from the gas to be measured. At the other end of the casing, within its longitudinal bore, a sensor element (24) is held fast and tight in the casing. A rod-shaped part carrying a heater element fits within the sensor element and extends out of it at its end away from the gas to be measured to an extremity near which contact areas are provided on its periphery. On these contact areas, resilient connection wires lie under mechanical bias. These wires, between the loops bearing against the contact surface and their ends are bent in Z or sinuous shape so as to secure them against pulling, twisting and shaking forces. These connection elements and also another conductor running in the probe cooperate with an indexing feature of the rod-shaped element, such as a suitable groove to secure the rod-shaped component against twisting.

Abstract: A splice for splicing together the steel armor wires (3, 3') of two armored electric cable ends (1, 1') after the remainder of the cable has been spliced, and in which the end of each armor wire of one of the cable ends is joined to the end of a corresponding armor wire of the other cable end by means of a sleeve (4). Each sleeve comprises a right-and-left screw link into which correspondingly right hand and left hand threaded armor wires ends are screwed. The cable may be a submarine cable for transporting electrical power.

Abstract: A connector for in-line electrical wires of the same or differing gauges in which an insulating casing envelopes a continuous, wire thread which tapers from each end of the casing towards the middle of the casing and the direction of the thread is right-handed from one end of the casing to the center of the casing and left-handed from the remaining end of the casing towards the center of the casing thus providing an easily applied, low cost connector and one which has minimum insertion resistance and maximum reliability.

Abstract: A gas-insulated electric apparatus improved in the conductive, heat-releasing, waterproof and rustproof properties, which comprises a plurality of linearly arranged grounded metal cases; and wherein a flange is formed at both ends of all adjacent metal cases; the flanges provided at the mutually facing ends of said metal cases are tightly joined together by proper means for the electric and mechanical connection of said metal cases; and a compound prepared by mixing silicone oil with 20 to 40% by weight of zinc powder and 5 to 15% by weight of aluminum powder is applied to the surface of the junction of the flanges.

Abstract: A pipe coupling and gasket is provided in which electrical conductivity through the coupling is assured, said coupling consisting of a middle ring with conical ends receiving an annular resilient gasket having a conductive helix made from metal wire of triangular cross section with an apex on the periphery of the helix, end caps urging the gasket into the conical ends of the middle ring and compression means acting on the end rings to move them toward the middle ring to compress the gasket and engage the helix against the middle ring, the end caps and a pipe therein.

Abstract: A pipe fitting fabricated out of an electrically non-conductive material for use in the coupling of pipe sections, the fitting being provided with integral conductor means for bonding, grounding, or shunting purposes. In this design, the conductor is a metal strap or strip which extends across the fitting body to the coupling ends thereof. The bottom portion of the conductor strap is substantially embedded in the wall of the fitting and the exposed surface of the strap is provided with sharp edges or similar means which are used to scrape clean the faying surface in the bore of the pipe when a connection therewith is being made to insure a good electrical contact therebetween.

Abstract: A repair coupling for flexible electrical conduit comprised of helically wrapped loosely interlocked metallic strip, said coupling being characterized by its initially enlarged arcuate cross section adapted to be constricted into tube form, the interrupted perimeter of the initial cross section providing an opening longitudinally coextensive with the coupling body for the lateral reception of wires, the body being reformed to have a continuous circumference of predetermined diameter for threaded engagement into the conduit sections joined thereby.

Abstract: A pair of electrical cables to be interconnected, each have an outer layer of insulation and a central conductor terminating in a cable end. A generally funnel shaped conductor is attached to the conductors of each cable end forming a concave terminal on each cable end. A spherical conductor is interposed between the funnel shaped conductors of the cable ends. The cable ends and the spherical conductor are compressively engaged to provide assured electrical contact through the cables and are enclosed within a tubular dielectric housing. The cable ends extend through apertures in threaded end plugs and into the tubular housing. The housing includes a dielectric grease to displace all air within the housing. A seal and tubular sleeve are interposed between the end plugs and the funnel shaped conductors of the cable ends so that threaded engagement of the end plugs provide axial compressive forces on the funnel shaped conductors and also seal the connection.

Abstract: The invention provides an electric duct for locating insulated electric wires along a wall. A removable cover member has internal channels in which wires are located at junction positions adjacent blind holes in the member through which spikes or claws of connectors extend to pierce the insulation on the wires and contact their conductive cores. The wires are retained in their channels by protuberances on a co-operating element which is locked to the cover member.

Abstract: The invention relates to a bar for connecting optical fibres. It is characterized in that it comprises a cylindrical alinement support having a groove disposed along one of its generating lines to receive the ends of the respective fibres and a ring installed round the support, split longitudinally for the insertion of the fibres and moving in rotation to maintain them in the groove. This bar enables a data transmission link to be formed by optical fibres.

Abstract: A recoverable tubular article comprising an elastomeric sleeve held in a radially expanded or extended condition and capable of recovering to its pre-expanded condition of smaller diameter upon the removal of an outer restraint, an outer restraint, essentially tubular in configuration, bonded to said elastomeric sleeve, said bond between the sleeve and the restraint being sufficiently strong to retain the elastomeric sleeve in its expanded condition under ordinary conditions of storage and susceptible to attack by solvents weakening the bond sufficiently to allow the elastomeric sleeve to peel away from the restraint and recover to its original state.

Abstract: A fitting for the end of a plastic pipe segment includes a body having an open-ended bore in which the pipe segment is received. A wedge-shaped grip ring and annular gasket are fitted over the pipe segment and compresses against an annular shoulder provided in the sidewall of the bore by a compression nut threaded into the open end of the bore. Abutting complimentarily inclined surfaces on the compression nut and the grip ring provide simultaneous radial compression of the grip ring and axial compression of the gasket when the compression nut is tightened. A sleeve-shaped stiffener within the pipe segment prevents deformation of the pipe wall. A plurality of radially extending serrations on the inside surface of the grip ring and on the outside surface of the stiffener engage the inner and outer surfaces of the pipe wall to secure the pipe segment to the fitting. An electrically conductive collar may be provided within the bore to establish electrical continuity between adjacent pipe segments.

Abstract: A sleeve having first and second interior surface portions. The first surface portion is threaded and communicates with one open end of the sleeve, and the second surface portion is smooth and communicates with the opposite open end of the sleeve. A bore is formed through the sleeve and the second surface portion thereof, and a set screw is threaded into the bore. The sleeve is first slipped, and then threaded, onto a first conduit, the conduit being first received by the smooth interior surface and then by the threaded interior surface. The end of a second conduit is then disposed adjacent the sleeve, and the sleeve is screwed back off the first conduit onto the second conduit until the first conduit is received by the smooth interior surface and the second conduit by the threaded interior surface. The set screw is threaded against the first conduit.

Abstract: A pipe coupling affording electrical continuity between all coupling components despite dielectric pre-coating of the individual components. For rendering the coupling components electrically conductive as where required for cathodic protection in a buried underground installation, conductive elements extending through and about the gasket effect electrical continuity between the follower, middle ring and contained pipe. At the same time, selectively located protuberances on each bolt are bared and reliably penetrate the coating on one follower while the bolt nut on makeup penetrates the bolt thread coating and the opposite follower to respectively insure their conductive continuity in the assembly.

Abstract: A conducting plastic pipe system comprising a male plastic pipe part and a female plastic pipe part with conducting covering layers which are interconnected by means of a conducting sealing ring between the male and female part. In case of outer covering layers on the pipe part the covering layer extends onto the inner side of the muff end of the female pipe part.

Abstract: To permit efficient heat welding of pipe fittings, and the like, of thermpolastic material to thermoplastic pipes, by electrically heating of the fitting, the fitting is made in two concentric portions, the inner portion having a heating wire applied to the outside thereof, the heating wire and inner portion being covered by the outer portion, for example injected thereover.

Abstract: For connecting together two wires which are to be placed under tension in series connection, a connector has a rigid body pierced by two substantially parallel bores. The wires are passed through the bores and anchored against the tension at opposite ends of the body by suitable anchoring means. The lengths which are to be tensioned extend through the bores. Where a wire has ruptured under tension, the broken ends can be respectively connected to two such connectors, which are themselves joined by a supplementary length of wire. Tension can then be re-applied.