Patent · US Active

Electromagnetic pressure valve

US8205858B2 · kind B2 · utility

3Cited by

20References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Erwin Mueller · Munich, DE
Klaus Schudt · Leingarten, DE
Michael Duerr · Mannheim, DE
Rene Deponte · Sersheim, DE
Guido Daimer · Kornwestheim, DE

Key dates

Filing date	Sep 29, 2008
Grant date	Jun 26, 2012
Priority date	—
Expiry date	Dec 7, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG05D16/2022
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An electromagnetic pressure regulating valve has a valve portion for conducting and regulating the pressure of an operating medium, such as oil, a magnet portion for actuating the valve portion for regulating the pressure of the operating medium and having a magnet housing, in which a magnet core is located that as needed exerts magnetic force on an armature, located in the magnet housing, a spring with a spring force generating a pressure activation threshold to be overcome upon regulation and located between the armature and an adjusting ball that is located in a pole piece of the magnet housing, and the spring has regions of different diameter.

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