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:
Jun. 07, 2011
Filed:
Jul. 09, 2008
Martin Raadkjaer Joergensen, Soenderborg, DK;
Ken Petersen, Soenderborg, DK;
Martin Raadkjaer Joergensen, Soenderborg, DK;
Ken Petersen, Soenderborg, DK;
Sauer-Danfoss Aps, Nordborg, DK;
Abstract
The invention concerns a hydraulic valve arrangement () having at least two working connections (A, B), a check valve () being allocated to each working connection (A, B), and a pressure relief valve () being allocated to each check valve (), each pressure relief valve () being connected to a control pressure passage (). The valve arrangement shall ensure a reliable, pressure-less lowering, also in connection with single-actuated consumers, and further enable a pressure-less float position. For this purpose, the check valves () can be opened by means of tappets (), whose sides facing away from the check valves () are ending in a pressure chamber (), which is connected to the control pressure passage () of one of the pressure relief valves ().