Abstract: In a hollow section of oxygen-free copper deoxidized with boron or lithium, which is to be pressed over a bridge tool, the percentage of the deoxidizing agent, boron or lithium, in the finished product is 0.01% to 0.05%. The electrical conductivity of the finished section is at least 95% IACS.

Abstract: An age-hardening copper alloy is used, alloy components being zirconium, nickel, chromium, cobalt, phosphorus, and beryllium, to make a tubular blank and solution heat-treating same; after a cold-working step, the pre-sized blank is age-hardened at from 400.degree. C. to 600.degree. C. for at least 15 minutes and explosion-formed in order to obtain the desired size, shape, and dimensions.

Abstract: Several lengths of tubing are interconnected either in advance by welding or brazing, or on-line by hollow plugs, and fed through an annealing furnace, a jacketing station, and a cutter, whereby flushing gas such as air, oxygen-enriched air, or an inert gas are sucked through the respective trailing end. The on-line, end-to-end connection can also be additionally used for tubings as prepared in advance and permits continuous processing, particularly combining process annealing with removal of oil residues.

Abstract: Two water tanks, one behind the other, are disposed adjacent to the rolling gap for a piercing mill; the rolled seamless tube on a mandrel rod passes through both tanks during rolling. The tank closest to the gap contains also a mandrel holder, and following rolling the mandrel is retracted into that tank; this tank, but not the other one, is emptied and the mandrel on the rod is exchanged. The tank is refilled and the next billet can be rolled. Nozzles are provided to prevent water from escaping through openings in tank walls for the tube.

Abstract: The stator of a linear motor is comprised of a core having many parallel grooves; three cables are preassembled so that rungs of a ladder-like configuration can be laid into the grooves. The cables have, individually, a meandering configuration, and overlapping loops are tied together. The cables each have a semiconductive layer for shielding, i.e., insulation sheathings that include conductive additives. Bare wires are strung along the assembly and clamped onto the cables to electrically interconnect the shields as well as different points of the same shield for grounding.

Abstract: The cable is made by cascaded SZ pattern stranding of elements (individual conductors, or bundles) in a first stranding level by means of multiple units each having a stationary aperture disk, a reversably revolving aperture disk, a tube between them, and a stranding head downstream from the revolving disk, with a wrapping station between them, resulting in plural, stranded bundles serving as stranding elements in a further unit for second-level stranding and being basically similarly constructed as each of the first-mentioned units.

Abstract: An insulated cable core is provided with a shield made of individual wires which are embedded in a first plastically deformable jacket which carries a water vapor impermeable sleeve made of wrapped or folded metal or metallized foil or ribbon whose adjoining edges are sealed. This sleeve carries a second plastically deformable jacket to be embedded in-between two such jackets. The usual protective covering is provided around the outer deformable jacket.

Abstract: Extruded, drawn and coiled copper tubing with wall thickness of 0.7 to 2 mm is soft annealed, straightened and jacketed in an extruder with a blend of polyvinyl chloride, chalk, a plasticizer and other additives for lubrication and stabilization. The jacket has inwardly extending ribs defining channels inbetween to enhance heat insulation.

Abstract: A long stator for a linear motor is assembled from many individual core elements provided with transverse grooves into which one places cable to be retained in the grooves so that they physically interconnect the stator elements and establish a chain-like assembly which can be, e.g., wound on drums and hauled to an installation site where the assembly is affixed to carriers along or on the track on which the movable part of the motor runs.

Abstract: Granulated polyethylene is agitated and mixed with a solution of silane with peroxide, activators and anti-oxidants and at a temperature between 80.degree. to 100.degree. C. to obtain diffusion of these additives into the polyethylene particles which is followed by grafting through extrusion or radiation which in turn is followed by exposure to and/or development of water to obtain cross-linking. A catalyst is added preferably by mixing polyethylene powder with the catalyst and adding that powder to the powder with diffused silane, after that diffusion has been completed.

Abstract: A plug for female contacts is comprised of a control carrier member with hinged interlocking parts for sealingly gripping the inserted conductor ends of a cable. The interlocked parts and adjacent conductor portions are molded in a plastic body.

Abstract: A strip is folded longitudinally around a tube to, thereby, establish an assembly of an inner and a concentric outer tube; individual slotted foam strips are placed in transverse orientation onto the strip just prior to folding; they will become spacers with V-shaped notches. Just prior to closing the outer split tube, foam is introduced into the ring space between the tubes which will spread freely through the notches.

Abstract: The corrugation is removed from an end portion of a helically corrugated tube, and an internally threaded sleeve is threaded onto the tube. The sleeve has an unthreaded extension which is being drawn by a suitable tool to engage the smooth wall portion of the tube and is subsequently welded thereto.

Abstract: The filter is constructed as a cylindrical or tapered body preferably having longitudinal grooves and ridges as flow channels, the body being made of thin metal, preferably gold plated nickel, to be self-supporting and having perforations to obtain a perviousness from 40 to 200 mesh (metric-DIN). A collar is affixed to suspend the filter in an opening. The filter material is preferably be made by electroplating.

Abstract: A plastic coating is provided on a heated wire in that powder is poured around the heated wire for adhesion thereto; the wire is then passed through a funnel shaped heating chamber, wherein the wire encounters chamber space narrowing radially progressively in direction of passing, for heating and melting the powder completely, the melted plastic is uniformly distributed thereby about the wire when leaving the chamber in special cases, foam can be deposited on the still warm and sticky coating.

Abstract: A cross-linking polyolefine, preferably a polyethylene powder is mixed with a silane solution (containing additives, such as a graft initiator, activator and anti-oxidant) and heated while worked, so that the wetted powder melts. The silane solution can also be blended into the melting powder. Grafting occurs in the melt and the stream of molten material is then degassed, while still warm in the final work shaping device, e.g. an extruder jacketing a conductor. The resulting product (to the extent it consists of the said material) will then cross-link.

Abstract: A revolving feed through connection has a socket member to which are connected mechanically the electrical conductors; a pair of coaxial conductors are mounted on the socket member and electrically to the said cable conductors while being insulated from each other; a sleeve made of strong material is mounted on the socket member and is firmly connected thereto. Means in the housing define a bearing for the sleeve and receiving the sleeve for permitting turning of the socket with the sleeve about an axis, which is coaxial to the conductors of the pair. The sleeve and bearing are constructed for axially retaining the sleeve in the bearing.

Abstract: A corrugation head includes a holder for a two segment, helical corrugating edge with adjustable pitch of the helix as well as of working spiral. The edge extends from two annular segments which have grooves and are held for bending. One of the segments can be pivoted inwardly for adjusting the depth of the corrugation to be made.

Abstract: There is disclosed a process and apparatus for manufacturing flexible, shielded coaxial cable exhibiting improved magnetical screening capabilities wherein a tubular outer conductor is concentrically formed about an inner conductor with spacer means being disposed in the annulus between conductors. Accordingly, about the inner conductor including spacer means therefore, there is formed an inner component tube of a conductive material by the continuous forming in a lengthwise direction of a metal band into a tube having longitudinal edges welded together in a continuous, longitudinal welded joint. Concurrently, at least one further component tube is formed concentrically about the inner component tube by the lengthwise deformation of a second metal band of a ferromagnetic material into a second tube having opposed longitudinal edges which are also welded in a longitudinal direction in a continuous, longitudinal welded joint.

Abstract: The fitting has a main part which has two axially spaced corrugations, one for engaging the corrugations of the tube, the other engaging the hose projecting from the tube. A sleeve with outer corrugations engages the hose from the inside. Armoring is clamped separately onto the outside of the main part.