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:
May. 02, 1978
Filed:
Aug. 31, 1976
Applicant:
Inventor:
Walter Heywang, Neukeferloh, DT;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310332 ; 310359 ;
Abstract
A multi-layer element consisting of piezoelectric ceramic laminations possesses partially overlapping metal layers which are electrically connected to one another. Adjacent metal layers can each be connected to different poles of a voltage source, the laminations within the overlap zone of the metal layers being polarized in the thickness direction of the ceramic layers in such a manner that the polarization directions of adjacent laminations are opposite one another. All of the laminations of the multi-layer element exhibit a polarization outboard of the overlap zone in which the polarization is in the same direction.