Valve with unilaterally constrained piezoelectric bending element as actuating device

US6945276B2 · kind B2 · utility

Assignee

• Hygrama AG · CH

Inventors

• Erich Dörfler · Treuchtlingen, DE
• Bernhard Russ · Peiting, DE
• Günther Strasser · Rottenbuch, DE
• Rainer Teltscher · Tegernsee, DE

Key dates

• Filing date: Jun 16, 2003
• Grant date: Sep 20, 2005
• Expiry date: Nov 5, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/87772
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Valve with a displaceable actuating device that controls the movements of at least one actual sealing element for opening and closing, and the actuating device is loaded with an elastic element essentially in a perpendicular direction relative to the direction of displacement, and the longitudinal axis of the actuating device and the force exercised by the elastic element are aligned in one position of the actuating device between its two extreme positions. In order to realize a valve that can be electrically switched using minimal currents and that is characterized, in particular, by its small construction size but that is still able to achieve large regulating distances, the actuating device is a unilaterally constrained piezoelectric bending element.