Patent · US Expired

Piezoelectric assembly

US6998761B1 · kind B1 · utility

11Cited by

32References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wilhelm Frank · Echterdingen, DE
Gunter Lewentz · Regensburg, DE
Andreas Voigt · Regensburg, DE

Key dates

Filing date	Aug 16, 2000
Grant date	Feb 14, 2006
Priority date	—
Expiry date	Sep 1, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49872
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A piezoelectric assembly, a method for producing a structural unit with a prestressed piezoelectric actuator and a method for producing a hollow body for prestressing the piezoelectric actuator include an actuator pushed into a spring sleeve and force-lockingly and/or form-lockingly connected under prestress to two ends of the spring sleeve. This provides a structural unit in which the prestressing force of the piezoelectric actuator is permanently fixed by the production process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.