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US 7,398,796 B2Granted
Valve arrangement
AssigneeSauer-Danfoss ApS
InventorsHenrik Hjorth, Jens Vester
Life of this patent
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AssigneeSauer-Danfoss ApS
InventorsHenrik Hjorth, Jens Vester
Estimating the term…
The invention concerns a valve arrangement (1) with a high-pressure connection (P), a low-pressure connection (T), at least one control valve (2 to 5), which is accommodated in a control valve module and has at least one working connection (A, B) for a hydraulic consumer (7 to 10), and a safety valve (6), which is accommodated in a safety valve module, and which releases or blocks a passage between the high-pressure connection (P) and the control valves (2 to 5), the control valve module (2 to 5) and the safety valve module (6) being connected to one component group. It is endeavoured to provide a valve arrangement with a high safety level. For this purpose, it is ensured that each control valve (2 to 5, 2′ to 5′) has an error detection device (19), that the safety valve module (6) has a safety switch device (21) and that the component group has a connection (20) between the safety switch device (21) and the error detection device (19).
A valve arrangement with a high-pressure connection, a low-pressure connection, at least one control valve, which is accommodated in a control valve module and has at least one working connection for a hydraulic consumer, and a safety valve, which is accommodated in a safety valve module, and which releases or blocks a passage between the high-pressure connection and the control valves, the control valve module and the safety valve module being connected to one component group, wherein each control valve has an error detection device, that the safety valve module has a safety switch device and that the component group has a connection between the safety switch device and the error detection device.
Dependencies are inferred from the claim text.