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. 02, 1996
Filed:
Jun. 08, 1994
Applicant:
Inventor:
Rainer Buschulte, Bad Schonborn, DE;
Assignee:
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310328 ; 310369 ;
Abstract
Piezoelectric actuator having at least one piezoelectric element assigned to an electrode for applying a control voltage includes a hollow body having a volume filled with an incompressible liquid, an elastic membrane closing an opening formed in the hollow body, and a device for controlling the piezoelectric element so as to vary the volume of the hollow body during a deformation of the elastic membrane caused by the incompressible liquid.