Robert Boschgmbh

Hermann Lehnertz

Holger Scholzen

Holger Haussmann

Thomas Bilsing

Herbert Labitzke

Henning Stilke

Hans-Joachim Lutz

Henning Fasterding

Johann Kunz

Karl-Otto Heinz

Martin Haupt

Klaus-Uwe Mittelstaedt

Oswald Antl

Walter Csiscer

Hans-Heinrich Winkel

Martin Leins

Johann Koeppel

The invention concerns a semiconductor power element (diode ) having a lead ( ) and a safety fuse ( ) situated in the main current path that blows when overheated, particularly for use in the electrical system of motor vehicles. In order to achieve a previously determined, purposeful disconnection of the endangered element in order to avoid consequential damages when semiconductor power elements become overloaded, it is proposed that a segment ( ) of the lead ( ) and/or its points of contact in the main current path of the semiconductor be designed as a safety fuse ( ) that blows when a specified, current-dependent temperature value is reached.

Semiconductor power component comprising a safety fuse

A pulley, in particular a free-running pulley, comprises a pulley body having an throughgoing opening for mounting on a shaft end of a machine and provided with an inner thread cooperating with a counter-thread of the shaft end. The throughgoing opening has a portion which is arranged forwardly of the inner thread and being provided on its periphery with a contour repeating at regular distances from one another and adapted for a form-locking engagement of a tool for tightening or loosening the pulley body on the shaft.

Pulley, in particular free-running pulley

A belt drive of an electrical machine has a belt pulley arranged on a driving end of a machine shaft, a coupling connecting the drive pulley with the machine shaft, the coupling having at least one elastic coupling part provided between a driving side and a driven side of the coupling, a mounting part having a bearing pin and mountable on a machine aggregate which is connected with the electrical machine, a drive belt connecting the mounting part with the machine aggregate, and an inner bearing. The belt pulley in order to take up belt pull forces, is mounted through the inner bearing on the bearing pin of the mounting part which is mountable on the machine aggregate through the drive belt.

Belt drive for electrical machines

Growing community of inventors

Fellbach, Germany

Hermann Lehnertz