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:
Apr. 08, 2014
Filed:
Nov. 07, 2008
Thilo Jene, Spiesen-Versberg, DE;
Achim Schutz, Nunschweiler, DE;
Thilo Jene, Spiesen-Versberg, DE;
Achim Schutz, Nunschweiler, DE;
Terex Demag GmbH, , DE;
Abstract
A hydraulic control circuit for the overcontrol of a hydraulic system which controls a drive, in particular for controlling a hydraulic motor () for driving a slewing gear of a crane superstructure, wherein the pressure lines () for the hydraulic motor () are connected by means of a supply piston () to a hydraulic pump () or a tank (), and the pressure lines () are each assigned pilot valves (), shuttle valves () and directional control valves (). The shuttle valves () are connected by means of control lines () to an activatable proportional pilot valve (), such that the separately activatable directional control valves () can thus be activated by means of said pressure, which is built up by the pilot valve ().