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. 05, 2013
Filed:
Jul. 15, 2008
Applicants:
Jürgen Dick, Laaber, DE;
Hellmut Freudenberg, Grossberg, DE;
Richard Pirkl, Regensburg, DE;
Inventors:
Assignee:
Continental Automotive GmbH, Hannover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/083 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an actuator unit for an injection system of an internal combustion engine, the difference in the longitudinal extension when a change of temperature of the piezoelectric actuator element occurs affecting the actuator unit is equalized compared to the actuator housing due to different thermal expansion coefficient values in that a fastening element is arranged on the actuator housing. The fastening element is made of a different material than the actuator housing and thus affects a force acting counter to the change of length of the actuator housing.