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:
Sep. 11, 2012
Filed:
Mar. 26, 2008
Michael Denzler, Regensburg, DE;
Christoph Hamann, Thalmassing, DE;
Harald Johannes Kastl, Fichtelberg, DE;
Stefan Kohn, Hohenburg, DE;
Maximilian Kronberger, Steyr, AT;
Christian Reichinger, Neutraubling, DE;
Carsten Schuh, Baldham, DE;
Claus Zumstrull, Regenstauf, DE;
Michael Denzler, Regensburg, DE;
Christoph Hamann, Thalmassing, DE;
Harald Johannes Kastl, Fichtelberg, DE;
Stefan Kohn, Hohenburg, DE;
Maximilian Kronberger, Steyr, AT;
Christian Reichinger, Neutraubling, DE;
Carsten Schuh, Baldham, DE;
Claus Zumstrull, Regenstauf, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A piezoelectric component with a monolithic stack, has electrode layers and piezoceramic layers arranged alternately one on top of the other, the piezoceramic layers have a piezoceramic, and having at least one porous security layer arranged in the stack for the formation of a crack if mechanical overload of the stack should occur. The piezoelectric component has an infiltration barrier arranged between the security layer and a lateral surface section of the stack for suppressing the penetration of a foreign substance into the security layer. The piezoelectric component can be as a piezoactuator for controlling a valve, particularly a valve of an internal combustion engine.