Patent · US Expired

Electropneumatic control valve with a back-up valve

US7052095B2 · kind B2 · utility

3Cited by

1References

8Claims

0Family size

Assignee

KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH · DE

Inventors

Friedbert Roether · Cleebronn, DE
Siegmund Deja · Freiberg, DE
Eberhard Schaffert · Leonberg, DE

Key dates

Filing date	Apr 26, 2002
Grant date	May 30, 2006
Priority date	—
Expiry date	Apr 26, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T15/18
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

Electropneumatic control valve for a pneumatic brake system of a vehicle, having a divided valve housing consisting of a lower relay valve housing and an upper pilot valve housing which enclose a control chamber in which an axially adjustable control piston is guided. The piston can be acted upon by way of a pilot valve arrangement accommodated in the pilot valve housing in order to switch the compressed-air flow between at least one brake line connection arranged on the relay valve housing, a supply pressure connection and as a bleeder connection by way of an interior valve seat arrangement. A control connection of a back-up valve of the pilot valve arrangement is also arranged on the relay valve housing, and by way of a valve-internal pressure medium duct is connected with the back-up magnetic valve accommodated in the pilot valve housing. Internal pressure medium ducts are arranged and sealed in a manner that allows the pilot valve housing to be produced without machining.

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