Patent · US Expired

Sealing element for the piezo actuator of a fuel injection valve

US7097484B2 · kind B2 · utility

6Cited by

3References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Willibald Schurz · Pielenhofen, DE
Martin Simmet · Bad Abbach, DE
Marcus Unruh · Zeitlarn, DE

Key dates

Filing date	Aug 6, 2004
Grant date	Aug 29, 2006
Priority date	—
Expiry date	Oct 7, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH01R13/521
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The sealing element consisting entirely of elastomer is plugged onto the head plate of a piezo actuator for a fuel injection valve. Encircling sealing bulges (6) are formed on the first end of the sealing element and effect a sealing toward the injector body (2). The sealing element has passages for accommodating contact pins (7), whereby sealing lips (8) are formed around the passages in order to seal the contact pins (7). The sealing actions of the sealing bulges (6) and of the sealing lips (8) are separate from one another.

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