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:
Aug. 01, 2017
Filed:
Apr. 09, 2014
Ttcontrol Gmbh, Vienna, AT;
Marcus Specks, St. Ingbert, DE;
Marcus Pfeiffer, Ramstein-Miesenbach, DE;
Stephan Grün, Püttlingen, DE;
Reiner Vierkotten, Oberhausen, DE;
Joseph Schnittker, Dortmund, DE;
Andreas Lehmann, Moers, DE;
Wolfgang Tebeek, Marl, DE;
Wolfgang Kemmetmüller, Vienna, AT;
Johannes Henikl, Vienna, AT;
Andreas Kugi, Vienna, AT;
TTControl GmbH, Vienna, AT;
Abstract
An electrohydraulic control circuit for driving a hydraulically actuated actuating element (), by means of which a segment () of a manipulator, in particular of a large manipulator for truck-mounted concrete pumps, can be adjusted in terms of its orientation, wherein there are provided an electrically driven first valve (), which is connected to hydraulic working lines of the actuating element () for the drive thereof, and leak-free check valves () provided in the working lines of the actuating element (), which valves are arranged on the actuating element () or on the segment () associated with this actuating element () and can be released for the normal operation of the actuating element (), wherein the release of the check valves () is driven by an electronic control unit (ECU) separate from the first valve () and the check valves ().