Component for piezoelectric force or pressure sensors, held together by an electrically insulating film

US7994690B2 · kind B2 · utility

Assignee

• Kistler Holding AG · CH

Inventors

• Peter Wolfer · Neuhausen, CH
• Claudio Cavalloni · Regensdorf, CH
• Reinhold Hess · Winterthur, CH
• Michael Mueller · Nagold, DE
• Andrea Bertola · Zürich, CH
• Christoph Kern · Aspach, DE
• Steffen Schott · Schwieberdingen, DE
• Pavlo Saltikov · Waiblingen, DE
• Michael Kleindl · Schwieberdingen, DE
• Reiko Zach · Waiblingen, DE

Key dates

• Filing date: Feb 22, 2006
• Grant date: Aug 9, 2011
• Expiry date: Feb 28, 2028

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23Q2007/002
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a component for installation in force or pressure sensors, in particular in a glow plug. The component comprises a disc-type or punched-disc type measuring element consisting of a piezoelectric material, punched-disc type or disc-type electrodes that lie on either side of the measuring element. The electrodes have contact points for contacting conductors. The component comprises in addition a respective transmission body or several transmission bodies that are located outside the electrodes, on either side of the latter. The measuring element, electrodes and transmission bodies are held together mechanically by an external, electrically insulating film.