Siemens Aktiengesellschaft

Festo Ag & Co

Karl Mayer Textilmaschinenfabrik Gmbh

Johnson Matthey Catalysts (Germany) Gmbh

Argillon Gmbh

Stefan Klump

Michael Riedel

Martin Maichl

Michael Weinmann

Gebhard Munz

Andreas Joseph Schmid

Heinz K&uuml;ck

Frank P&ouml;hlau

Udo T&ouml;pfer

Reinhard Fischbach

J&uuml;rgen G&uuml;nther

Markus Hoffman

Hubert Kr&auml;mer

J&uuml;rgen Sestak

Wolfgang Eberhardt

Carsten Pein

Martin Rüttel

Matthias Zimmermann

Rüdiger Ballas

Jürgen Günther

Hubertus Kremer

Hubert Kremer

Jürgen Schleicher

A piezoelectric valve whose housing defines a valve chamber wherein at least one piezoelectric flexural transducer is located. The piezoelectric flexural transducer possesses a contact face, which faces a first outer wall of the valve housing. This first outer wall is in the form of a wiring support which possesses a support body consisting of plastic material, which at the outer side opposite to the valve chamber bears a wiring arrangement. The wiring arrangement is in electrical contact by way of a via extending through a cutout in the support body with the piezoelectric flexural transducer, since the via consists of an electrically conductive elastic plug, against which the at least one contact face is thrust at the inner face of the support body.

Piezoelectric valve

A piezoelectric bending transducer comprises a flat, electrically conductive supporting body having piezoceramic coatings on both sides. Each coating has an inner contact area facing the supporting body and an outer contact area facing away from the supporting body. The piezoceramic coatings are omitted from one end of the supporting body, which is fixed in a connector base. Each of the two coatings and the supporting body are electrically connected to a plug-in contact that includes an electrically conductive elastomer in a cavity in the connecting body. The elastomer is partially elastically deformed by a contact pin inserted thereinto. As a result of the ease with which electrical connections can thus be made to the transducers, this arrangement is particulary adapted for incorporation into a transducer module with plural transducers secured adjacent to each other in a common connector base. The transducer module in turn is particularly adapted for use in a control module because of the easy interchangeability of the transducer modules.

Piezoelectric transducer for incorporation into a module

An apparatus for producing extrusions, such as optical waveguide plug prongs or sheaths with a central opening, from a deformable composition, includes a receiving body having an outlet opening and having an interior tapering conically at a predetermined first angle of conicity toward the outlet opening. A flow body is to be inserted into the interior of the receiving body. The flow body has an end portion tapering conically at a predetermined second angle of conicity. The second angle of conicity is smaller than the first angle of conicity. A retainer retains the flow body in the interior of the receiving body. The retainer is resilient in radial direction of the interior of the receiving body.

Apparatus for producing an extrusion of material with a central opening

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Lichtenfels, Germany

Stefan Klump