The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2006
Filed:
Apr. 26, 2002
Friedbert Roether, Cleebronn, DE;
Siegmund Deja, Freiberg, DE;
Eberhard Schaffert, Leonberg, DE;
Knorr-Bremse Systeme Fuer Nutzfahrzeuge GmbH, Munich, DE;
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.