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:
Feb. 26, 2008
Filed:
Jul. 30, 2004
Matthias Goller, Bad Abbach, DE;
Stefan Kohn, Hohenburg, DE;
Wolfgang Reisinger, Regenstauf, DE;
Andreas Voigt, Regensburg, DE;
Claus Zumstrull, Regenstauf, DE;
Matthias Goller, Bad Abbach, DE;
Stefan Kohn, Hohenburg, DE;
Wolfgang Reisinger, Regenstauf, DE;
Andreas Voigt, Regensburg, DE;
Claus Zumstrull, Regenstauf, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In a method for pretreating a piezoelectric ceramic () and a method for adjusting an injection valve (), the piezoelectric ceramic () is exposed to environmental conditions, leading to a reduction of polarization and also a reduction of the length of the ceramic (). The obtained length exhibits a greater long-term stability due to said adjusting phase. Consequently, the injection valve () can be re-adjusted before use. As a result, renewed adjustment thereof is required only after a long period in service.