Patent · US Expired

Pressure control valve

US5284317A · kind A · utility

10Cited by

4References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Werner Brehm · Hemmingen, DE
Reiner Kimmich · Bietigheim-Bissingen, DE

Key dates

Filing date	Sep 20, 1991
Grant date	Feb 8, 1994
Priority date	—
Expiry date	Sep 20, 2011

Classification

Technology area (CPC G)Physics
CPC primaryG05D16/2022
WIPO fieldControl
WIPO sectorInstruments

Abstract

A pressure control valve has a substantially closed housing, an armature provided with an integrated valve body, a valve seat with which the valve body cooperates, a spring acting on the valve body so that the valve body cooperates with the valve seat, an electromagnet arranged to adjust a control pressure. The magnet armature is somewhat bucket-shaped. A projection extends in an interior of the housing and operates for guiding a magnetic flux. The magnet armature surrounds the projection and is mounted on the valve body in a friction-transmitting manner. A second spring acts on the valve body so as to counteract an action of the first mentioned spring.

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