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:
Jan. 13, 2015
Filed:
Jul. 25, 2008
Ralf Woerner, Tiefenbronn, DE;
Siegmund Deja, Freiberg, DE;
Ralf Woerner, Tiefenbronn, DE;
Siegmund Deja, Freiberg, DE;
Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH, Munich, DE;
Abstract
A pilot-controlled valve having a valve system switches a pressure medium flow between at least one working connection, a supply pressure connection and a ventilation connection, and includes at least one valve member of ceramic material operated rotationally/linearly by pilot control, at least one connecting channel is bringable into flow connection to the working connection, which, based on the valve member's position, produces a flow connection of the working connection to a first flow channel connected to the ventilation connection or to a second flow channel that is connected to the supply pressure connection, at least one section of the first and second flow channels being in at least one static valve body of ceramic material, at least the first flow channel is sealed from the second flow channel by at least one seal that is in a region outside a direct inflow by the pressure medium.