Wieder Gmbh

Bernd Reyer

Klaus A Wieder

In a flow meter, especially for liquid cooling media in injection molds, comprising a housing with an inlet and outlet conduit and inside the housing a piston that is slidable against the force of an axially acting spring by the pressure of the fluid flowing through the housing in such a way that the displacement of the piston takes place in dependence upon the flow rate and is indicated through a window, provision is made, to attain a high measuring accuracy with a simple construction, for a helical spring ( ) that is guided in extension of the inlet conduit ( ) in an axial direction to be disposed in such a way that the entering fluid is transported around the centrically disposed helical spring ( ).

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Munich, Georgia

Bernd Reyer