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. 13, 2007
Filed:
Oct. 08, 2004
Klaus Plecher, Zeitlarn, DE;
Marcus Unruh, Zeitlarn, DE;
Klaus Plecher, Zeitlarn, DE;
Marcus Unruh, Zeitlarn, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In order to increase the lifetime for a piezoactuator of a fuel injector and to make possible a reliable seal of the piezoactor especially for comparatively thin head plates as well a gas exchange passage running through an actuator housing () is provided, where a sealing unit () placed on the head arrangement () is provided for sealing the piezoactor () which features a carrier () on which a sealing material () is arranged which forms a seal around the piezo contact pins () and the head arrangement () and on which a microporous gas exchanger () to create gas permeability of the sealing unit () is integrated such that any fluid which has penetrated through to the gas exchanger () can flow out of the gas exchanger () under the force of gravity.