Kabelmetal Electro Gmbh

Kabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft

Kabel-und Metallwerke Gutehoffnungshuette Ag

Hermann-Uwe Voigt

Horst Matzat

Michael Still

Georg Maltz

Ferdinand Hanisch

Joachim Klass

Frank Patzke

Cornelius Van Hove

Wolfgang Roenisch

A cable core, comprising conductors with insulation and carrying a conductive shield layer is protected and shielded by a corrugated metal tube cooperating either with individual, electrically conductive sealing rings, or a conductive helical sealing ribbon with foam filling any gaps. The construction ensures adequate space for thermal expansion of the insulation without undue tensioning of the tube. A method of making the assembly is described and examples for the ribbon and the foam are given.

Cable protected against moisture and method of making the same

A cable splice, tube joint, or the like, is covered by a fitting constructed as a split hose provided along one edge with a rail made of metal or a strong synthetic; a similar rail element or an integral fastening element is provided on the other edge and secured to the first rail by welding, adhesive bonding, or soldering in order to obtain a joint which resists tension and compression. The hose has been laterally slipped onto and over the cable splice or tube joint and, after the split joint has been sealed (or concurrently therewith), the hose is heat-shrunk. Various rail configurations are shown; a method of making the hose is explained.

Longitudinally divided hose-like filling

A spacer is coiled about a drawn, seamless copper tube, and a metal foil or metallized paper ribbon is folded around the coiled spacer. A blend for foaming is injected into the unoccupied space between the folded foil or ribbon and the inner tube, to generate a cyanurate-modified polyurethane foam network in which phosphorous or halogen molecules are embedded by chemical bond. A flame-resistant ribbon is folded about the metal tube. The resulting product and further details of the process are described.

Thermally insulated tubing

Growing community of inventors

Langenhagen, Germany

Hermann-Uwe Voigt