The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2012
Filed:
Nov. 13, 2008
Stefan Denneler, München, DE;
Axel Ganster, Schwindegg, DE;
Susanne Kornely, München, DE;
Carsten Schuh, Baldham, DE;
Andreas Wolff, München, DE;
Jörg Zapf, München, DE;
Stefan Denneler, München, DE;
Axel Ganster, Schwindegg, DE;
Susanne Kornely, München, DE;
Carsten Schuh, Baldham, DE;
Andreas Wolff, München, DE;
Jörg Zapf, München, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A piezoelectric component with at least one fully active piezoelement has electrode layers and interposed piezoelectric layers guided to a lateral edge of the piezoelement and contacted there. An insulating layer applied for electric contacting has an electric through-plating. An electrically conductive gas-phase deposition layer is applied directly to the electrode layer guided up to the lateral surface of the piezoelement by way of deposition from the gas phase in order to improve electric contacting. An external electrode is applied to the gas-phase deposition layer. In the case of several superposed stacked piezoelements (piezoactuator in multi-layer design), the external electrode functions as a collector electrode which connects the electrode layers to each other. The structure enables secure contacting of the electrode layers. A fully active piezoceramic multi-layer actuator with the described contacting may be used in automobile technology for activating fuel-injection valves.