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. 24, 2011
Filed:
Jul. 12, 2004
Heinrich Diekmeyer, Barsinghausen, DE;
Hans-ulrich Bornhof, Burgwedel, DE;
Frank-dietmar Lippelt, Barsinghausen, DE;
Heinrich Diekmeyer, Barsinghausen, DE;
Hans-Ulrich Bornhof, Burgwedel, DE;
Frank-Dietmar Lippelt, Barsinghausen, DE;
WABCO GmbH, Hannover, DE;
Abstract
An electronic compressed-air system includes a compressed-air supply part having a compressor and a consumer part having load circuits. The load circuits are supplied with compressed-air via solenoid valves. At least one load circuit is provided with a pressure reservoir. The pressure in the load circuits is monitored by pressure sensors, whose signals are evaluated by an ECU that controls the solenoid valves. The load circuits include service-brake circuits having a compressed-air reservoir, secondary load circuits and a high-pressure circuit, wherein the solenoid valves of the service-brake circuits and the solenoid valves of the secondary load circuits are open in a de-energized normal state and the solenoid valve of the high-pressure circuit is closed in the de-energized normal state.