Siemens Aktiengesellschaft

Klaus Oberndorfer

Jorg Kusserow

Roman Renz

Axel Knauff

Klemens Fieberg

Burkhard Mick

Klaus Recker

Wolfgang Schwarze

Guenther Bialkowski

Wolfgang Lienke

Elmar Schaeffers

Mike Fokken

An injection unit for an injection-molding machine for processing thermoplastic material is designed in such a way that a direct drive (EM) which meets high dynamic requirements is used for the injection operation and that a standard motor (DM), the rotational speed of which is optimized to the material preparation process by a gear mechanism (R, RS , RS ), is used for the material preparation, in which such dynamic requirements do not exist.

Injection unit for an injection-molding machine

Vacuum interrupter

Vacuum-type interrupter having an annular insulator

A vacuum switching tube comprises a simply-constructed housing which is established in that cap-like metal portions are soldered blunt to the end faces of a ceramic portion, in that the metal parts comprise a cylindrical region of reduced wall thickness in the region of the ceramic parts, in that a step is formed in the inner wall at the transition to the thick-wall region to the thin-wall region, in that a vapor shield comprises an expanded edge region, and in that the edge region lies against the thin-wall cylindrical region and against the step and is soldered thereto. The tube is suitable for vacuum switching tubes in which the temperature coefficient of the metal portions is not matched to the temperature coefficient of the ceramic portion.

Vacuum switching tube

Growing community of inventors

Berlin, Germany

Klaus Oberndorfer