Invention Grant
- Patent Title: Hydraulic valve arrangement
- Patent Title (中): 液压阀装置
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Application No.: US12170056Application Date: 2008-07-09
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Publication No.: US07954420B2Publication Date: 2011-06-07
- Inventor: Martin Raadkjaer Joergensen , Ken Petersen
- Applicant: Martin Raadkjaer Joergensen , Ken Petersen
- Applicant Address: DK Nordborg
- Assignee: Sauer-Danfoss Aps
- Current Assignee: Sauer-Danfoss Aps
- Current Assignee Address: DK Nordborg
- Agency: McCormick, Paulding & Huber LLP
- Priority: DE102007032415 20070712
- Main IPC: F15B13/042
- IPC: F15B13/042

Abstract:
The invention concerns a hydraulic valve arrangement (1) having at least two working connections (A, B), a check valve (5, 6) being allocated to each working connection (A, B), and a pressure relief valve (7, 8) being allocated to each check valve (5, 6), each pressure relief valve (7, 8) being connected to a control pressure passage (17, 18). 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 (5, 6) can be opened by means of tappets (20, 21), whose sides facing away from the check valves (5, 6) are ending in a pressure chamber (22), which is connected to the control pressure passage (17, 18) of one of the pressure relief valves (7, 8).
Public/Granted literature
- US20090014074A1 HYDRAULIC VALVE ARRANGEMENT Public/Granted day:2009-01-15
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