Danfoss Power Solutions Gmbh & Co Ohg

Sauer-danfoss Inc.

Markus Reimer

Bernd Hames

Momme Boldt

Howe Gripp

Reinhardt Thoms

The invention relates to a signal inducing device (), comprising a first material () and a second material (). The first material () and the second material () show a different magnetic behaviour. The first material () and the second material () are arranged in a way that the resulting magnetic behaviour of the signal inducing device () varies over a magnetic interaction surface () of the signal inducing device (). The signal inducing device () is designed in a way that the magnetic interaction surface () shows an essentially smooth surface, in particular with respect to the standard moving direction of the magnetic interaction surface ().

Speed sensor ring

The invention relates to a signal inducing device (), comprising a first material () and a second material (). The first material () and the second material () show a different magnetic behavior. The first material () and the second material () are arranged in a way that the resulting magnetic behavior of the signal inducing device () varies over a magnetic interaction surface () of the signal inducing device (). The signal inducing device () is designed in a way that the magnetic interaction surface () shows an essentially smooth surface, in particular with respect to the standard moving direction of the magnetic interaction surface ().

In the housingof a hydraulic machine, the pressure Pi acts in the chamber. For this purpose, a passage openingis provided, which is formed as a valve seat. A valve bodycan be displaced longitudinally in the housingand forms a pressure-tight spring chamber for an inner valve spring. The spring chamber is connected to the chambervia a pressure equalizing hole. The prestress of the inner valve springcan be set by means of a setting screw. In addition, there is an outer valve spring. Both the valve springs load the valve bodywith the effect of closing it. The pressure equalizing valve described combines a compact design with an advantageous flow characteristic. When a maximum value of pis reached, the valve bodylifts off the valve seatand hydraulic fluid from the chamberflows away via the valve chamber

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Klein Nordende, Germany

Markus Reimer