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:
Aug. 23, 2005
Filed:
Aug. 10, 2000
Ulrich Eisele, Stuttgart, DE;
Ulrich Eisele, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for producing a piezoelectric actuator () with a multilayer structure of layers of a piezoelectric sheet (), and with inner electrodes disposed between them, is proposed, in which the individual layers are formed of two continuous strands () of the piezoelectric sheet, and the two strands () are wound over one another in the form of a double helix to form a hollow-cylindrical stack, thereby enclosing the inner electrode between them. The two strands () are preferably guided over deflection rollers () in such a way that the overlays of the two strands () on the already-wound stack are offset from one another by a predetermined angular amount.