Patent · US Active

Piezoelectric actuator with a sheath, for disposition in a piezoelectric injector

US7728489B2 · kind B2 · utility

41Cited by

6References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rudolf Heinz · Renningen, DE
Dieter Kienzler · Leonberg, DE
Udo Schaich · Stuttgart, DE

Key dates

Filing date	Aug 29, 2007
Grant date	Jun 1, 2010
Priority date	—
Expiry date	Oct 18, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/703
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piezoelectric actuator with piezoelectric elements, fastened between an actuator head and an actuator foot, and with a plastic sleeve surrounding at least the piezoelectric elements is proposed, which is set in a clamping ring on the actuator head and/or the actuator foot of the piezoelectric actuator. The respective clamping ring may be a metal part or a plastic part, which is equipped with clamping lugs suitable for setting the plastic sleeve and is thrust, pressed, or shrunk onto the respective actuator head and/or actuator foot of the steel piezoelectric actuator.

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