Piezoelectric valve

US6811136B2 · kind B2 · utility

Assignee

• FESTO AG & CO. · US

Inventors

• Wolfgang Eberhardt · Stuttgart, DE
• Heinz Kück · Stuttgart, DE
• Carsten Pein · Marbach am Neckar, DE
• Frank Pöhlau · Fürth, DE
• Andreas Schmid · Kleinmachnow, DE
• Stefan Klump · Lichtenfels, DE
• Michael Riedel · Buchbach, DE
• Jürgen Sestak · Lichtenfels, DE
• Udo Töpfer · Aichach, DE
• Hubert Kramer · Bocholt, DE
• Martin Maichl · Salach, DE
• Markus Hoffman · Wolfschlugen, DE
• Gebhard Munz · Schorndorf, DE
• Michael Weinmann · Schorndorf, DE

Key dates

• Filing date: May 19, 2003
• Grant date: Nov 2, 2004
• Expiry date: May 22, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K31/006
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

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.