Abstract: A cardiac pacing lead having a plurality of individually insulated conductors arranged as a multifilar coil. The lead includes a connector assembly and a ring electrode assembly, each of which are optimized for use in conjunction with conductors arranged in the form of a multifilar coil. The connector assembly takes the form of an in-line connector having a plurality of linearly arranged connecting surfaces, each coupled to one of the conductors in the multifilar coil. The ring electrode assembly is constructed such that it displays the same outer diameter as the pacing lead. In both assemblies, conductors are coupled by means of welds, rather than by crimping or swaging.

Abstract: A conductive polymer interconnect structure (10) is comprised of an insulative polymer (18), a silicone or an epoxy, having a plurality of particles (20) arranged therein to provide conductive paths which extend in the z direction. At least a portion of those particles (20) proximate a separate one of the major surfaces of the matrix has at least a portion thereof coated with a solder 24 whose composition is tailored to melt below the cure temperature of the matrix (18). In this way, when the matrix (18) is sandwiched between a pair of conductive members (12 and 14) and the matrix is cured, a metallurgical bond, rather than a mechanical bond, will be formed between the members.

Abstract: The ends of two composite superconductors (10a and 10b) having many filaments (12) are joined together to form a joint that is durable, superconducting under proper conditions, and has good shunting capacity. The filaments (12) are exposed by removal of the normal conducting matrices (14a and 14b) from the ends of the composite conductors (10a and 10b) to be joined. The superconductive filaments (12) from each of the composite conductors are inserted together into a sleeve (16) of bimetal construction. The inner surface (18) of the sleeve is made of superconducting material and is metallically bonded to the outer surface (20) of the sleeve which is made of normal conducting material. The bimetal sleeve (16) abuts the matrices (14a and 14b) of the composite conductors (10a and 10b) on one end, and the filaments (12) extend beyond the opposing end of the bimetal sleeve (16). The bimetal sleeve (16) is crimped to form a cold weld joint, and then severed in the region of the crimp to form another cold weld joint.

Abstract: An apparatus and method of manufacturing bundles of electrical cables. The bundles include a plurality of main conductors and a plurality of secondary conductors. The main and secondary conductors both include a conductor core and an insulating sheath. The ends of the main conductors include box-like connection elements which are either male plugs or female sockets. The method includes the steps of: stripping an intermediate portion of the main conductors; stripping the ends of the secondary conductor; positioning the stripped portions of the main and secondary conductors tightly against one another; mounting a thimble on the two stripped portions; and mounting a band of cold-deformable insulating material on the thimble. The apparatus includes devices which perform each of these functions.

Abstract: A wire harness is produced by attaching terminals to one of the respective ends of a plurality of wires and gathering the other ends and attaching a single terminal thereto. The plurality of insulated wires are intermittently fed by respective predetermined lengths along predetermined feed paths, and then cut to respective predetermined lengths to provide remaining wires and cut wire sections. The insulation on the forward ends of the remaining wires and on the rear ends of the cut wire sections, next to the cut just made, are stripped. Terminals are crimped to insulation-stripped ends of the remaining wires. The cut wire sections are transferred so that their insulation-stripped ends are gathered in one place and then the insulation-stripped ends of the cut wire sections are trued-up and a single terminal is crimped thereto to form a single terminal for the plurality of cut wire sections.

Abstract: Apparatus for ultrasonic welding of wires including a hand-held housing with an ultrasonic wave generator, a welding tip connected to said generator, an anvil for clamping the wires to be welded to said welding tip, and a tool for gathering wires disposed between said anvil and welding tips to prevent the wires from splaying during weldment.

Abstract: A method of electrically connecting a flat-conductor ribbon line (1) to a flexible connecting line (6) having stranded conductors. The wires (8, 9) of the connecting line (6) are of different length, with a difference in length which corresponds to the distance of the flat conductors (2, 3) from each other. The one flat conductor (3) can be bent back until it rests against the insulation of the flat-conductor ribbon line (1). The two lines (1, 6) are connected to each other at a right angle and the line ends are embedded in the protective body (10) which is formed by injection.

Abstract: A plurality of precision cables simultaneously constructed on an assembly device having wire retainers arranged in a corresponding plurality of cable patterns. Each assembly step is successively performed on the plurality of substantially identical cable patterns before the next step is commenced to facilitate assembler efficiency. The precision electrical cables are assembled in a generally linear form with individual wire terminals intermediate their ends and with a selected amount of slack provided in at least some of the individual wires which is retained between cable bindings to permit subsequent bending of the cable between the bindings without substantial relative displacement of the individual wire terminals. The linear form facilitates both use of a tie gun for binding the wires of the cable together and compact mounting of a plurality of cable patterns on a single cable assembly apparatus.

Abstract: This invention relates to heat-shrinkable devices for forming solder connections between electrical conductors. The devices each comprise of a hollow, heat-shrinkable sleeve having first and second ends, and contain a quantity of solder. Both ends contain heat-softenable sealing material which seal the ends upon recovery of the article, the sealing material at the second end being less responsive to heat than the sealing material at the first end. The conductors to be connected are inserted into the first end of the sleeve and the sleeve recovered. Because the sealing material at the second end does not seal the second end until after the sealing material at the first end has recovered about the inserted conductors at the first end, any hot gases evolved within the article can exit the article via the second end. The invention enables a reliable connection to be made between electrical conductors that are provided with heat-sensitive insulation.

Abstract: A connection zone location and selection device is provided for application to first and second flat multiconductor cables secured to one another in overlapped relation. In such arrangement, the secured cables define a matrix of connection zones each having in registry therewith a distinct pair of conductors of the cables. The device is adapted for movement with respect to the cables and includes a punch for making perforations through the cables and locator indices for registration with a preselected location on the cables or with perforations made by the punch for disposing the punch in registry with selected ones of the connection zones. Methods and a kit of components for making undercarpet power installations are also provided.

Abstract: Superconductive conductors, having as many as thousands of filaments, are joined together to form a true superconductive joint. The method is particularly applicable in the situation in which superconductive filaments are embedded in an overlying or surrounding matrix of resistive material such as copper or aluminum. The resistive material is removed by chemical dissolution to expose a length of superconductive filaments. The filaments are juxtaposed within a sleeve of superconductive material which is crimped about the exposed filaments. The connection may be completed by thermally fusing the exposed ends of the filaments.

Abstract: A bonded ASP cable includes a multiconductor core which is filled with a waterproofing material. The core is enclosed by a plastic layer (28) which is flooded with a waterproofing material. Wrapped longitudinally about the plastic layer is a corrugated inner shield (31) having a longitudinal seam (35) and having an outer surface covered with a waterproofing material. The inner shield is enclosed by a corrugated outer shield (36) which has an overlapped longitudinal seam (38) and which has an outer surface coated with a layer of an adhesive material. As the outer shield is being formed, a sealant material is introduced into engagement with the inner shield in the vicinity of the longitudinal edge portions of the outer shield. Then as the longitudinal edge portions of the outer shield are overlapped and engaged with each other, the sealant material is caused to flow into cavities between the two shields adjacent to the seam of the outer shield to form a gasket (66).

Abstract: A method for manufacturing high capacitive multilayer conductive bars is described. It comprises at least two conductive elements (14,16), one capacitive element (12) between them, and further inner and/or outer dielectric elements (13,113,18,20). The electrical connection between the capacitive element (12) and the conductive element (14,16) is realized by a solder alloy material (30), preferably in the form of a soldering alloy material.The mechanical connection between the outer (18,20) respectively the inner dielectric elements (13,113) and the conductive elements (14,16) is established by a non-conductive bonding material (13',113',22,24). Mechanical as well as electrical connection is made in the same operation step. The multilayer conductive bar has a great reliability. It is used for power and/or signal distribution in electronics, for example printed circuits and other high density components.

Abstract: Forming a core unit from telecommunications conductor units of twisted together conductors in which the units are first changed in relative positions laterally of their passline and then are passed between two rollers to form them into a curved array. The positions of the units in the array influence their final positions in the core unit as they move towards a core unit closure device. Hence as the positions in the array change because of the positional change in relative positions of the units upstream from the array, then the units change in relative positions in the core unit by extending backwards and forwards around the core unit axis.

Abstract: In a process for making a connection between superconductive wires constituted by one or more strands or filaments of superconductive material embedded in a metallic matrix, the metal constituting the matrix is previously eliminated over a certain length of wire, corresponding to the desired zone of contact between the wires, so as to expose the or each strand of these wires. Thereafter the linkage is established between the strands by exerting thereon a strong pressure, cold.The visible superconductive strands of the two wires are applied, near one another, on a support. A strip of superconductive material is then applied on the visible strands and a sheath made of a material which is a good conductor of electricity is placed around the assembly constituted by the support, the strands of the superconductive wires and the superconductive strip.

Abstract: An apparatus for peeling and twisting an electric wire having an insulating coating comprises a machine frame, a shaft rotatably mounted on said frame and being adapted to be driven by a motor, a machine body movably mounted on the shaft and an elastic member for urging the machine body to an end position on the shaft. The shaft includes wire clamping cam, insulating coating cutting cam, twisting cam and cut insulating coating disengaging cam. A wire clamping means is mounted on the frame and is following the clamping cam. The machine body includes an insulating coating cutting means which follows the insulating coating cutting cam for cutting the insulating coating of the wire, a conductor twisting means which follows the twisting cam for twisting the conductors of the wire and a cut insulating coating disengaging means which follows the disengaging cam for disengaging the insulating coating which has been cut.

Abstract: A hand held splicing gun for splicing together exposed portions of a number of wires. The gun includes a frame and a trigger actuated valve that routes compressed air to two drive cylinders mounted to the frame. A first cylinder drives a pair of forming bars against a strip of splicing material. Working in conjunction with a shear block and a forming post, the bars first shear a band from the splicing material and then bend the band into a U-shape about the wires. The second drive cylinder drives a crimping bar against the band, causing the band to bend around the wires, securing them together.

Abstract: A method and apparatus for producing a stranded cable. The wire stretching step and annealing steps which have been performed independently prior to the twisting step in the field of stranded cable production are combined in the invented apparatus. The rotary element defines an annular space in cooperation with a shoe member such that the cross sectional area of the annular space decreases progressively. The roughened wire guided into the annular space via the shoe member is press molten and subjected to extrusion moulding to obtain a plurality of wires, which in turn are twisted together. Since the stretching and annealing are performed by a single apparatus, shop space conventionally required for device installation is reduced.

Abstract: The method of the present invention is used to make a multiconductor coil having an outer diameter equal to the diameter of a winding mandrel plus the diameter of wires being coiled while preserving homogeneity of the insulating coating and of the insulation between the wires. The method includes the steps of: winding a first uninsulated wire conductor on a winding mandrel with a predetermined spacing between adjacent turns of the coil of wire conductor; coating the uninsulated coil of wire conductor with an insulating coating; repeating the above two steps for each additional wire conductor to be included in the multiconductor coil; and, after the insulating coating on each wire conductor coil has dried and/or solidified, screwing each additional coil into the first coil to form a multiconductor coil having a desired homogeneity of the insulating coating and of the insulation between adjacent turns in the multiconductor coil.

Abstract: A steel-cored aluminum cable for electric power conduction comprises a steel core including a plurality of steel wires and an aluminum coating disposed therearound in direct contact therewith and formed from an aluminum sheet and a plurality of aluminum staples disposed around the aluminum coating in direct contact with the aluminum coating along the entire innermost circumferential surface of the aluminum staples.

Abstract: An apparatus and method are described for preconnectorization of the ends of a cable for pulling through a standard diameter duct. The apparatus utilizes a connector consisting of three major parts: first and second wire organizers and a contact element means. The wire organizers are of a form factor sufficiently small and are organized such as to fit around the cable core without increasing the outside composite diameter of the cable. The apparatus further includes two forms of cable pulling devices.

Abstract: Means and method are provided for conveniently breaking out wires from a wire bundle in a wiring harness during the fabrication or layout stage, there being a wrapper having two parallel rows of holes punched therein and a specially designed comb having teeth with detent ends which are inserted through the first row of holes in the wrapper. The wire bundle is then passed alongside these teeth with the desired strands being broken out between the teeth, and subsequent to the breakout process the wrapper is folded over the wire bundle and the second row of holes engaged securely over the detent ends of the comb teeth.

Abstract: The invention relates to the formation of a substantially circular metallic shield (37) about a cable core (32) by wrapping a metallic tape (64) longitudinally about the core with longitudinal edge portions of the tape being overlapped by a forming key (100) to provide a closed seam (38). As the seam is formed, an underlying longitudinal edge portion (48) of the shield is supported while an overlying longitudinal edge portion (45) at the overlap is directed inwardly toward the cable core to preclude its protrusion into a jacket (39) which is subsequently extruded over the shielded cable core. A relatively thin strip (145) of metal attached to an inner surface of the forming key assures formation of the seam before juxtaposing the longitudinal edge portions and the core, and avoids penetration of a priorly formed inner shield by the longitudinal edge of the outer shield to prevent rotation of the inner shield and undesirable alignment of the shield seams.

Abstract: In the method, lengths of wire are drawn from wire supplies and cut, each end of each cut wire being stripped of insulation and terminated, and the cut wire then being laid along a predetermined path defined by guide pins on a loom board. The wire lengths are then bound together and removed from the board. The wire is handled by a mechanical gripper which moves and is actuated under preprogrammed electronic control.The apparatus comprises a loom board or the means by which such a loom board can be made, an automatic manipulator having a controlled gripper to draw wire from a preselected supply, a cutter to cut the wire, a wire stripper and insulative sleeve applicator and a terminal supply and crimper, both accessible to the gripper which can then lay the terminated wire lengths along predetermined paths on the loom board, and a tape binder which binds the laid wires together to form the required wiring loom.

Abstract: A first cable is spliced to an intermediate portion of a second cable by inserting an end of the first cable and a stripped intermediate portion of the second into a metallic tube, then forging the tube and cable portions together, then bending the first cable at a desired angle relative to the second cable, then soldering the cables and tube together, and then molding a plastic cover over the tube and exposed conductive portions of the cables.

Abstract: An electrical connector comprising a heat-shrinkable sleeve, solder, a solder wettable insert and optionally a pre-installed electrical conductor, in fixed locations in the sleeve, the insert assisting in control of solder flow when the connector is heated to join the conductor to a terminal pin.

Abstract: The disclosure is of a grooved drum carrying an insulating strip, to which is secured a plurality of turns of an insulated wire wound helically on the drum. Inside the drum is mounted a longitudinal shaft which carries a series of spaced-apart cutting blades, and means are provided for moving the shaft by increments longitudinally to position the cutting blades behind different groups of wires. At each position, the knife assembly is rotated and the blades cut a group of spaced-apart wires which are joined together to provide a plurality of groups of wires.

Abstract: A flexible connector cable for providing high density and reliable electrical interconnections between printed circuit boards or any other surfaces having conductive paths that need connection to conductive paths on adjacent surfaces. The connector cable comprises a flat flexible laminar structure including an electrically-insulative layer and an electrically-conductive layer. The insulative layer is typically formed on a bonded plastic such as Polyimide and the conductive layer is typically formed of copper. Openings are formed in the insulative layer to expose the conductive layer and raised contacts or buttons are deposited on the conductive layer on both surfaces of the cable. The raised contacts are formed of ductile conductive material which exhibits plastic deformation under pressure to form good electrical connections.

Abstract: A method of making electrical brushes from thousands of hair-like fibers comprises wetting the fibers to hold them together in a bundle, placing the bundle in a tube and reducing the opening in the tube to hold the fibers therein.

Abstract: A method of connecting electric cables includes providing perforations in overlapping portions of the cables and then connecting the cables through the perforations. The cables may be preperforated or they may be perforated at the job site.

Abstract: A laminated tubular connector for splicing or terminating electric conductors, comprising an outer layer of a heat shrinkable dielectric material, e.g., polyethylene terephthalate, and an inner layer of a relatively soft, self-adhesive, low temperature flowable thermoplastic material, preferably a polyvinyl acetate composition. When heat is applied to the connector, the outer layer shrinks and the inner layer functions as a sealant and a cushioning agent. The adhesiveness of the inner layer may be used to hold the connector in place during subsequent operations by pinching the connector so that the depressed portions of the tube adhere to each other prior to heating the connector to shrink the outer layer.