Abstract: A superconducting element comprising a high temperature superconducting film deposited on a stainless steel substrate that includes a composition of nickel; chromium; silicon; manganese; and iron. Optionally, carbon; phosphorous; sulfur; nitrogen; and unavoidable impurities will be present.

Abstract: A superconducting element comprising a high temperature superconducting film deposited on a stainless steel substrate that includes a composition of nickel; chromium; silicon; manganese; and iron. Optionally, carbon; phosphorous; sulfur; nitrogen; and unavoidable impurities will be present.

Abstract: In a method and apparatus for manufacturing an optical fiber cable, a metal band is gradually shaped into a lengthwise slotted tube, the optical fibers are introduced into the still open slotted tube, the lengthwise slot of the tube is welded and the outside diameter of the welded tube is reduced. The welded tube with the reduced outside diameter is wound at least once around a take-up reel. A force provided on the reduced outside diameter welded tube as it is wound on the take-up reel causes an elastic strain of 0.1 to 0.6% on the tube. The strain is released on the take-up reel to produce an overlength of the optical fibers relative to the reduced outside diameter welded tube.

Abstract: During the fire-polishing of a lengthwise extended glass body (3), for example a preform for drawing optical fibers, the glass body (3) is held by a holding device (5, 7), and is heated by a burner (23) moving at a variable advancing speed parallel to the lengthwise axis (19). The surface temperature of the glass body (3) is determined with a temperature measuring device (25). The mechanical stress condition of the glass body (3) is detected with an optical device (29) and can be controlled by varying the burner temperature and/or the advancing speed of the burner. The invention makes it possible to counteract the occurrence of high mechanical stresses in the glass body (3).

Abstract: A high frequency coaxial cable (1) contains a concentric internal conductor (3), a cylindrical insulating layer (7) surrounding the internal conductor (3) and made of a foamed plastic containing more than 50% by volume of air, a tubular external conductor (9) placed over the insulating layer (7), and an outer sheath (11). Cutouts (15, 15') are made in the insulating layer (7) by removing insulation material starting at the periphery (13) of the insulating layer and extending radially inward. These cutouts (15, 15') make it possible to increase the dielectric properties of the insulating layer between internal conductor (3) and external conductor (9).

Abstract: In a method and apparatus for manufacturing an optical fiber cable, a metal band is gradually shaped into a lengthwise slotted tube, the optical fibers are introduced into the still open slotted tube, the lengthwise slot of the tube is welded and the outside diameter of the welded tube is reduced. The welded tube with the reduced outside diameter is wound at least once around a take-up reel. A force provided on the reduced outside diameter welded tube as it is wound on the take-up reel causes an elastic strain of 0.1 to 0.6% on the tube. The strain is released on the take-up reel to produce an overlength of the optical fibers relative to the reduced outside diameter welded tube.

Abstract: A metallic sheath for an electric cable with a ratio of inner diameter Di to outer diameter Do of at least 0.9, comprises a lengthwise welded, annularly or helically shaped corrugated tube whose wall thickness is in a range between 0.005 and 0.009 of the outer diameter, and where the distance p between two neighboring corrugation crests is in a range between 0.08 and 0.12 of the outer diameter. In addition, a method of making the above described electric cable is described.

Abstract: An arrangement for sealing the inlet area of a substrate extending lengthwise in a housing, preferably a communications cable in a sleeve, has the following features:a) a tube (3) in the form of an elastomer hyperboloid is placed on a cable and has plastic moldings (4,5) at each of its ends firmly attached to the tube (3);b) the elastomer tube (3) is under lengthwise-axial pressure, so that the central portion of the tube (3) is firmly pressed against the substrate (2) surface,c) the tube (3) with its attached moldings (4,5) is located in a hollow body (9), which maintains the lengthwise-axial pressure; andd) the hollow body (9) is attached to the inlet area of the housing (1) and is sealed with respect to the inlet opening.

Abstract: An arrangement for tightly enclosing a substrate with a heat-shrinking plastic sleeve (1), which has thickened sections (2, 3) along its longitudinal edges, has at least two rails (4, 5) pushed on the sleeve (1) after it has been placed around the substrate. The rails hold the longitudinal edges of the sleeve (1) together before, during and after the heat-shrinking. The two rails (4, 5) form a junction area and S-shaped profiles (6, 7) are placed in the junction area on both sides of the thickened edge sections (2, 3) and are enclosed by both of the rails (4, 5).

Abstract: A method for producing a sector conductor for electric power cables is introduced, whereby a number of metal wires are joined closely together into a core (8) with a sector-shaped cross section. A lengthwise running metal strip is formed around the core (8) and its longitudinally abutting edges are welded into a tube (9), whose dimensions are reduced so that it lies closely against the core (8) and surrounds it.

Abstract: A device is described for connecting two electric aerial cables. Each aerial cable has tube, containing optical fibers, which is cabled with electric conductors and strength member. Means are provided for the mechanical and electrically conductive joining of the electric conductors and strength members of the two cables. A sealed splice carrier for receiving the spliced connections of the optical fibers comprises two concentric tubes (7, 9) with a annular gap between them. The annular gap is sealed at both ends. The optical fibers are inserted into the annular gap through apertures in the end seals (8). The spliced connections and a length of optical fibers are stored in the annular gap. The splice carrier (5) surrounds the means (21, 3) for the mechanical and electrically conductive joining and is attached to the electrically conductive joining means (3) or to the aerial cables (1).

Abstract: A device for housing the active and passive junction assemblies of underground-located telecommunications installations, with a removable holding fixture for the assemblies placed inside the container, has the following characteristics:a) the container (6) has a hollow main body portion (6a) and a shoulder portion (6b) which extends conically towards one end,b) a hollow neck portion (6c) is adjacent to the conical portion (6b),c) the container (6) is closed by a cover (7), which simultaneously serves as a sidewalk cover,d) the container (6) rests on a pipe (2) cast into a foundation (1), which protrudes from the foundation (1), while the hollow neck portion (6c) extends into the pipe (2).

Abstract: A device (24) is provided for the electromagnetic braking and clutching of at least one storage spool (7). Each storage spool is located on a hollow shaft (5) and can rotate around its longitudinal axis (25). Each storage spool permits strand-shaped materials to be drawn therefrom and strand-shaped materials to be wound thereon when the storage spool (7) is driveably connected to the hollow shaft (5). The electromagnetic braking and clutching device includes a star-shaped support unit (31) that is securely affixed to the hollow shaft (5) and has a number of radially extending holding devices (37) distributed around its periphery. The support unit (31) holds at least one electrically excitable magnet coil (45) radially by using of a holding device (37), at a distance from the hollow shaft (5). The device is particularly suited for braking and clutching storage spools (7) with large outside diameters, which are located on a hollow shaft (5).

Abstract: An antenna includes a parabolic reflector and a supply line attached thereto. The supply line includes two rectangular electromagnetic (waveguides) that are essentially parallel to each other. A tube-shaped exciter is common to the (waveguides) and is located at open ends of the waveguides. A back side of the reflector has a mechanically stable receptacle, which is used to attach the reflector to a support. The receptacle includes a metal ring with an L-shaped cross section in an opening that corresponds to a central opening in the reflector. The ring has a cylindrical area and, at a right angle to the cylindrical area, a base area that extends toward the inside of the ring. In the installed position, the cylindrical area of the ring penetrates and is centered in the opening of the reflector. A holding plate, which firmly surrounds and supports both waveguides, fits precisely into the ring and is attached to the ring in removable form when mounted.

Abstract: A method is indicated for igniting a welding arc between a fixed electrode and a metal workpiece to be welded, whereby a covering protective gas is supplied by a nozzle that extends into the welding area. Before a welding power source is switched on for the welding arc, an auxiliary arc supplied by an auxiliary power source is ignited, which ignites the welding arc after the welding power source is switched on. To better ionize the welding area and ensure the ignition of the auxiliary welding arc, a high-frequency electric arc is produced in the welding area between the nozzle and the workpiece by means of a pulse generator which produces high-frequency high-voltage pulses.

Abstract: In a device for the transmission of signals between two terminals (6, 8), at least one of the terminals is movable relative to the other. The terminals (6, 8) are connected by at least one line (10) forming windings. The line is stored in an essentially circular cartridge (K) which comprises a stator supporting one of the terminals, and a rotor supporting the other terminal, which can rotate around its axis and in relation to the stator. The line windings (10) are divided into an internal winding area (12) and an external winding area (11) with different winding directions, between which an approximately U-shaped reversing area (13) is located. A one-piece ring-shaped guide (14) is located between the two winding areas (11, 12) and encompasses the reversing area (13) of the windings; it has reciprocally offset protrusions (15) located at least on the side facing the internal winding area (12), which protrude radially outward around the entire periphery.

Abstract: A coaxial connector (1) is adapted for use with a coaxial high frequency cable having an external conductor which concentrically surrounds and is spaced from a tube-shaped internal conductor with at least one optical wave guiding element therein. The coaxial connector has an internal contact part (5), which can be electrically connected with the internal conductor of the high frequency cable, and is positioned concentric with a longitudinal axis of the connector. A plug-in element (15), which is electrically connected to the internal contact part (5), is angled with respect to the longitudinal axis of the connector. The plug-in element (15) is surrounded by a ferrule terminal (21), with a space between them, which can be electrically connected to the external conductor of the high frequency cable.

Abstract: In a method for producing lengthwise welded metal tubes, a metal tape is drawn from a supply reel and is gradually formed into a slotted tube, and the slotted tube is welded by a laser beam, the tape edges are heated by a separate laser beam. The laser beams for the heating and welding strike the lengthwise seam at an angle that is less than 15.degree. from the vertical, the distance between the burn spots produced by the laser beams is between 1 and 5 mm, and the power applied to the tape edges by the first laser beam is sufficient to raise the temperature of the tape edges to at least one half of the T.sub.F -T.sub.R difference, where T.sub.F is the fusing temperature of the metal and T.sub.R is the room temperature.

Abstract: A device or transmitting signals between two terminals is indicated, where at least one of them is moveable with respect to the other. The terminals are connected by at least one line wound in turns, which is stored in an essentially circular cassette. The turns of the line are divided into an inner winding area and an outer winding area running in different directions, between which an approximately U-shaped reversing area is located. A one-piece ring-shaped guide (14) is located between the two winding areas and surrounds the reversing area of the turns. At least on the inside facing the inner winding area, the guide (14) has protrusions (15) that are distributed around the entire periphery and face radially out toward the center point (M), and which are offset with respect to each other in the peripheral direction.

Abstract: A device for transmitting signals between two terminals is indicated, of which at least one is moveable with respect to the other. The terminals are connected by at least one line (10) which is wound in turns and stored in an essentially circular cassette (K) comprising a rotor (15) and a stator (16). The turns of the line (10) are subdivided into an inner winding area and an outer winding area with different winding directions, between which an approximately U-shaped reversing area is located. A one-piece ring-shaped guide (14) is positioned between the two winding areas, and encompasses the reversing area of the turns. At least one of the peripheral faces of the guide (14) has a rib-like collar (18) that extends radially around the entire circumference, with a bottom face that rests against a corresponding surface of the rotor (15) when the collar is in its operating position.