Kabel-und Metallwerke Gutehoffnungshuette Ag

Kabelmetal Electro Gesellschaft MIT Beschrankter Haftung

Kabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft

Kabelmetal Electro Gmbh

Peter Rohner

Gerhard B Ziemek

Friedrich Schatz

Karl-Heinz Marx

Michael Still

Klausdieter Schippl

Gunther Blumenberg

Werner Meyer

Wolfgang Obert

A light-wave conductor cable is described within the core of which there is at least one ribbon line (1) in which light-wave conductors (2) are arranged alongside of and parallel to each other. The light-wave conductors (2) are enclosed between two ribbons (3, 4) the material of which has the same coefficient of thermal expansion as the light-wave conductors (2). The ribbons (3, 4) consist preferably of fiberglass-reinforced plastic. The ribbon line (1) may be disposed within an outer jacket (20), and therein arranged straight or curved or, in the case of several ribbon lines (1), in ordered or random fashion and about a core of the light-wave conductor cable.

Optical communication cable with ribbon waveguide support

A ribbon cable (1) having optical waveguides (2) which are laminated between two ribbons (3, 4). The ribbons (3, 4) have an adhesive layer on one side. They are bonded to the optical waveguides (2) and to each other between them as well as at the edges. The ribbons (3, 4) have the same coefficient of thermal expansion as the optical waveguides (2), they preferably consist of fiberglass-reinforced plastic.

Ribbon cable with optical waveguides

There is disclosed a communication cable with wave guides which are combined in ribbon lines. The optical wave guides are fixed in the ribbon lines only at fastening places which lie one behind the other in axial direction and are spaced apart from each other. The ribbon lines are marked at the fastening places, for instance by color. The marking is identical for a ribbon line over its entire length. All ribbon lines arranged in the cable are marked differently.

Communication cable with optical wave guides

The interior of a tube provided for low temperature operation is shielded from the exterior through a plurality of metal ribbons helically looping around the tube in an intertwined relationship and each carrying a welded on conduit for low temperature liquid whereby one of these conduits serves as a primary or outgoing conductor, and the two others serve as return paths; suitable spacers are provided to position the system in a concentric relation; inner and outermost tubes are preferably corrugated and the immediate interior of the outermost tube is filled with superinsulation.

Flexible cryogenic conduit

An improved insulated transmission line for the transfer of cryogenic media is disclosed comprising: a tubular heat shield, including at least three concentric, radially separated, corrugated metallic tubular members, that provides a first annular space between two of the tubular members wherein a multiple layer, fibrous insulating material is disposed under vacuum conditions; a second annular space between two of the tubular members, including the innermost of the tubular members, containing a liquid or gaseous cooling media; and a vacuum sealed, inner tubular space formed by the innermost tubular member; the improvement comprising: a plurality of corrugated metal pipes extending through such vacuum sealed inner tubular space and being spacially separated from each other and from the tubular heat shield for providing minimum heat conductance between the metal pipes, and between the metal pipes and the tubular heat shield, throughout their respective axial lengths.

Insulated transmission line for cryogenic media

A spacer for concentric tubes is constructed as a helical braid; the braid elements have smooth or contoured surfaces, are of a solid configuration, or are made from stranded filaments. The elements or filaments are made from synthetic (polymer) material or metal, or one uses both kinds of materials in the same braid or element.

Spacer in concentric tube systems

A heat exchange apparatus is disclosed comprising a heat transfer conduit wherein a heat transfer fluid flows in a corrugated sealed evacuated tube between hot and cold zones with the fluid being evaporated in the hot zone and condensed in the cold zone, said tube being wound to provide a plurality of windings, with a first portion of each winding being in the hot zone and a second portion of each winding being in the cold zone. The heat transfer conduit so wound is axially positioned within a tubular container comprised of a metal of high heat transfer conductivity and having a polygonal cross section. Each first portion of such windings is attached to an interior surface of the tubular container by means of a connector member also of a metal of high heat transfer conductivity, thus providing an efficient heat conductance path from the outside surface of the tubular container to the inside surface of the plurality of windings in the hot zone. The outside surface configurations of the corrugated, wound evacuated tube in combination with the interior straight surfaces of the polygonal tubular container provide a high turbulence circumstance for the efficient transfer of heat for example between a heated liquid passing about the outside surfaces of the tubular container and a cooling gas passed axially through the interior of the tubular container.

Heat exchange apparatus

A method of fabricating a plurality of heat transfer conduits is disclosed wherein an elongated metal pipe is evacuated, a predetermined quantity of heat transfer fluid is placed within such evacuated pipe and the pipe ends sealed airtight. The elongated sealed pipe is wound in a helical or serpentine configuration, the lower vertical portions of the so configured pipe are heated so that the liquid phase of the heat transfer fluid is evaporated and redistributed in an even manner in the lower vertical portions of successive convolutions of such pipe, and is then flattened, for example, at each of its upper vertical portions to form vacuum-tight seals between adjacent convolutions. A cutting procedure across each of the flattened upper portions (or selected ones of such flattened upper portions) enables a separation of the elongated sealed pipe into a plurality of heat transfer conduits without the necessity of a further evacuation procedure.

Method of fabricating heat transfer conduits

A communications cable in which optical waveguides partially fill the inner cross section of a corrugated metallic tubular member and form therein an undulatory configuration extending in the axial direction; thus providing for any given section of cable a length associated with the optical wavesguides that is greater than the length of the corresponding section of the tubular member of such section of communications cable.

Communications cable with optical waveguides

A winding device comprised of parallel spaced supporting bodies on which an elongated flexible material is helically wound in a single layer. The bodies are interconnected by a folding mechanism, whereby the bodies can be axially displaced to reduce the distance therebetween and thereby reduce the length of one axis of the wound material while retaining the length of the other axis to permit transportation thereof in appropriately sized containers.

Winding device

A super conductor is made by first shaping a copper strip carrying a niobium layer into a corrugated tube; thereafter tin is deposited on the tube which is coiled, hung from a ceramic rod and placed into an annealing furnace being evacuated thereafter, the interior of the tube is sealed off from the interior of the furnace. After, e.g. two hours of heating for causing the tin to diffuse into the niobium, a sufficiently thick layer of Nb.sub.3 Sn has developed and a cold inert gas is flushed through the tube to rapidly cool the tube while retaining it in the evacuated but no longer heated furnace.

Growing community of inventors

Isernhagen, Germany

Peter Rohner