Abstract: An electrical terminal (1) for connection to one or more electrical wires comprises a conventional terminal portion (2) having a lug portion (3) and a hollow shank (4), a jacket (11) of polymeric insulation that extends over the shank, and a tapering hollow connection piece (6) for example in the form of a coiled wire. The tapering connection piece has an internal and external screw thread and is arranged partly within the end of the shank. It is capable of receiving one or more electrical wires so that they can be secured within the connection piece (6), and the connection piece (6) can be secured within the shank (5) by twisting the terminal about the wires. The jacket (11) is preferably formed from a heat-shrinkable sleeve, and the terminal preferably includes a quantity of solder (9) for forming a permanent electrical connection.

Abstract: A structure such as a cable for carrying an electric current or voltage or signal, where one conductor employs a material of much higher resistivity than the other conductor. A method of carrying an electric current or signal that allows exploitation of the advantages of high resistivity materials while avoiding disadvantages.

Abstract: An effective grounding of electrical equipment, electrical cables, housings, and the like, is accomplished by connector lugs that are initially formed as an integral part, for example, of a connecting sleeve that surrounds a protective casing or an envelope of a cable in a crimping manner. The lugs are only bent out of the sleeve or housing portion or the like when needed. A grounding conductor is then secured to the lug, for example, by a screw connection or by a plug-in connection or the like. The present lugs may be incorporated in all systems that are provided for protection against surge currents or excessive voltages produced by a thunderstorm, especially in a vehicle or a craft, e.g. an aircraft.

Abstract: A method of manufacture and a resultant cable structure of elliptical stranded cable which optimizes the use of existing conventional stranding machines. In accordance with the present invention, one or more layers of shaped, non-circular, wires are interposed to provide support between the inner core of substantially round wires each having essentially the same diameter and the outer layer of round wires of different diameters, which outer layer includes round wires of different diameters which are arranged to provide the minor and major axes of the elliptical cable. The shaped wires are preferably trapezoidal in shape. Alternatively, the shaped wires may be arcuately shaped elliptical wires subtending an angle determined by dividing 360.degree. by the number of shaped wires (for example, 30.degree. for a twelve wire layer) and having an aspect ratio (ratio of major axis X dimension to minor axis Y dimension) sufficient to provide support between the inner core and outer layer of round wires.

Abstract: A insulation-shrinkage prevention device for preventing insulation from shrinking back on a power cable which has synthetic insulation and which is to receive connection equipment on a "prepared" end of said cable, the device including a shouldered ring mounted on said prepared end and secured to the bared conductor, which ring has a fixing shoulder for fixing to the periphery of the insulation, an abutment shoulder for abutting against the end of the insulation, and an integrated retaining device for securing the ring to the bared conductor.

Abstract: In a towed array breakout of the type deployed from or retrieved by naval ssels a junction is defined between a fixed portion of an electrically conductive wire and a movable portion of the wire portion. A relatively hard potting material is provided around and defines the fixed portion of the wire. A coiled helically shaped portion of the same wire or a second wire is integrally joined to the first portion and defines the movable portion. This movable second portion is encased in a relatively soft urethane material so as to provide freedom in both a bending and tension mode. A third portion of the wire is connected to the opposite end of the coiled second portion. This structure affords strain relief at the junction between the fixed portion of the flexible conductor and the movable second portion.

Abstract: An insulated cable which combines good roundness and good strippability includes one or more insulated conductors, an inner lining of polymeric tape wrapped around the conductors, and an outer jacket of polymeric insulation melt extruded around the inner lining. The level of adhesion between the inner lining and the conductors is less than the level of adhesion between the inner lining and the outer jacket. The insulated cable is particularly useful in anti-lock braking systems. A process for making the cable is also disclosed.

Abstract: The end flange (16) of the first encasing part (10) of the gas-insulated high-tension installation is an outer flange and includes through bores (34). A first securing ring (18) is provided on the end-face side of the end flange (16). The securing ring holds a first insulator (28). The first securing ring (18) includes through bores (36) which are in alignment with the through bores (34) and which have a stepped configuration. The step forms, in each instance, a counterabutment (42), which cooperates with the abutment (44) of the respective threaded bolt (38). To secure the first securing ring (18) on the first encasing part (10), the abutment (44) rests on the counterabutment (42) and, on the other side, the threaded bolt (38) is supported by the nut (48) on the end flange (16).

Abstract: A transmission cable for transmitting differential logic signals is disclosed having an improved shielding. The cable includes a pair of insulated signal conductors in side by side relation with a layer of electrically conductive material wrapped around the two signal conductors. A non-insulated drain wire is disposed axially along the outside of the wrap of shielding material adjacent one of the signal conductors. The layer of conductive material is continued around the outside of the drain wire thereby forming an additional wrap of the shielding about at least a part of the cable assembly. The drain wire is in electrical engagement with the shielding material.

Abstract: An electrically conductive cable is shielded from electromagnetic interference (EMI) with a mesh of aluminum wire that has been treated with a chromate conversion coating. The coating resists corrosion of the aluminum wire and galvanic reaction of the aluminum wire with dissimilar metals, thereby reducing degradation of shield effectiveness due to oxidation and allowing aluminum wire to be used to reduce shield weight in corrosive environments. The mesh may include a less compressible wire, such as tin plated copper, to alleviate cold flow problems.

Abstract: An electrostatographic reproduction machine wherein at least a portion of the wiring is formed from partially carbonized polyacrylonitrile filaments having a resistivity of between 1.times.10.sup.2 and 1.times.10.sup.10 ohm-cm. Preferably, the interconnects from the power source to the corona generating means are partially carbonized polyarylonitrile wires.

Abstract: A shielded electric cable having a core including an insulated conductor. A first shielding member formed of an elongated ribbon of insulating material and a pair of elongated metal foil strips arranged in a parallel relationship with the ribbon and bonded to the opposite sides of the ribbon is applied longitudinally to the core and wrapped circumferentially therearound forming two concentric substantially closed shielded layers. A layer of plastic material, preferably foamed, surrounds the first shielding member and a second shielding member surrounds the plastic layer, the second shielding member being formed of non-braided metallic material. The layer of plastic material is bonded to the shielding members. The shielded electric cable is provided with an outer jacket of non-conducting material and having an appropriate O.D. for receiving a standard connector.

Abstract: The present invention relates to a cable used to supply electric power to a pump for pumping crude oil from an oil well. It is consisted of an insulating layer, a resin sheath and a metallic sheath sequentially layered onto the surface of a conductor. A protective layer comprised by a wrapping of thermal resistant tape is formed at the surface of at least one of the insulating layer and the resin sheath. Due to the provision of this protective layer, it is possible to prevent the breakdown of the insulating layer and the formation of holes in the cable caused by pressure changes occurring when the cable is removed from an oil well within the high pressure environment.

Abstract: A method for waterproofing a junction of branch wires with a main wire by enclosing the junction in a plastic cover containing a putty sealant and filling the inside of the cover with the sealant and a cover therefore are disclosed, the method comprising providing projections n and m on the inner side of cover l by which parallel wires b enfolded in the cover are vertically shifted or the parallel wires are not only vertically shifted but laterally spread by the projections to make enough space between adjacent wires b for letting the putty sealant in.

Abstract: A pressure-welding type electric terminal according to the present invention is constructed such that it comprises an electrically contacting section and an electric wire connecting section which is composed of an electric wire pressure-welding section and an electric wire retaining section, wherein the electric wire pressure-welding section further comprises: a sub-plate section provided at one part of a longitudinal side of the base plate by way of a connecting portion and superposed on the base plate, which sub-plate section being integrally provided with a sub section having two consecutive elongate holes; an upright section formed with a slot therein for receiving an electric wire, which upright section being formed by vertically folding the sub section; and a pair of fixing pieces for firmly fixing the superposed sub-plate section at the front and rear sides of the upright section respectively.

Abstract: Disclosed is a flat cable having a plurality of parallel-arranged flexible conductor wires and two pieces of insulating tape applied to the opposite center areas of the parallel arrangement of conductor wires leaving their opposite ends exposed, thereby permitting the exposed ends to be used as terminal contacts, each of said conductor wires having an intermediate length of reduced width for increasing the flexibility of the conductor wire. An elongated strip of electrically conductive, flexible metal foil is unrolled and fed to be punched to provide at one time, conductor wires of the same number and parallel arrangement as a flat cable to be made; two pieces of adhesive, insulating tape are applied to the center areas of the parallel conductor wire arrangement; and finally the opposite perforation edges are cut and removed.

Abstract: An electrical system comprises an inverter, a three-phase electric motor and a cable to transfer energy from the inverter to the motor. The cable further comprises a center conductor and two additional conductors disposed about the center conductor. Insulators physically and electrically separate the conductors from one another. Electromagnetic emissions from the cable are substantially prevented due to the construction of the cable.

Abstract: A communication cable (10) comprises optical fibres (24) and/or metal conductors (20) for the transmission of information, and a tensile member, the tensile member comprising a steel strand and synthetic material. The steel strand has a modulus of elasticity of at least 140 000 N/mm.sup.2. The steel strand comprises a core wire (12) and one layer of layer wires (14) surrounding the core wire. A contact is provided between the layer wires and the core wire. The interstices between the layer wires and the core wire are filled with a first synthetic material (13) having a melting-point above 150.degree. C. The steel strand is covered by a layer of a second synthetic material (16). The filling with the first synthetic material and the covering by a layer of a second synthetic material is such that watertightness is obtained in the longitudinal direction of the tensile member.

Abstract: An electrical component has a body (1) and a plurality of leads extending from the body, and is enclosed in an insulating plastics sleeve (4) that extends over the body and leads. The sleeve (4) has a number of heat-recoverable end portions (6, 7) that extend over the leads and enclose a quantity of solder (8, 9), so that the leads can be permanently connected to further terminals by heating the end portions of the sleeves to cause them to recover and the solder to fuse.

Abstract: A protective heat sinking device for an electronic circuit card having upper and lower layers of an air-impermeable polymer material forming an air-impermeable bag. A metallic foil having high thermal conductivity is inserted between the upper layer of air-impermeable polymer material and the top surface of the electronic circuit card. The air-impermeable bag has an open side into which the circuit card is inserted. The bag is evacuated to produce a conformal vacuum seal in which the upper and lower layers of air-impermeable polymer material and the metallic foil are drawn down onto the surface of the circuit card and form a conformal protective cover about its contours. A layer of electrically insulating material may be added between the metallic foil and an upper face of the circuit card to electronically insulate the metallic foil from the circuit components mounted on the upper face of the circuit card contained within the protective heat sinking device.