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US 7,243,591 B2Granted
Hydraulic valve arrangement
AssigneeSauer-Danfoss ApS
InventorsCarl Christian Dixen, Brian Nielsen
Life of this patent
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AssigneeSauer-Danfoss ApS
InventorsCarl Christian Dixen, Brian Nielsen
Estimating the term…
The invention concerns a hydraulic valve arrangement (1) with a working connection arrangement having a first working connection (A) and a second working connection (B), both working connections (A, B) being connectable with a hydraulic consumer (2), a supply connection arrangement having a pressure connection (P) and a tank connection (T), a first valve arrangement with a first valve (12), closing the pressure connection (P) or connecting it in a controlled manner with the first working connection (A) or the second working connection (B), a second valve arrangement with a second valve (16), closing the tank connection (T) or connecting it in a controlled manner with the first working connection (A) or the second working connection (B), and a control arrangement controlling the first valve arrangement and the second valve arrangement. In such a valve arrangement, it is endeavoured to achieve improved operation behaviour. For this purpose, at least with one of the two valves (12, 16) a working position can be set, in which the first and the second working connections (A, B) are connected with each other.
A hydraulic valve arrangement with a working connection arrangement having a first working connection and a second working connection, both working connections being connectable with a hydraulic consumer, a supply connection arrangement having a pressure connection and a tank connection, a first valve arrangement with a first valve, alternately closing the pressure connection, connecting it in a controlled manner with the first working connection, or connecting it in a controlled manner with the second working connection, a second valve arrangement with a second valve, alternately closing the tank connection, connecting it in a controlled manner with the first working connection, or connecting in a controlled manner with the second working connection, and a control arrangement controlling the first valve arrangement and the second valve arrangement, wherein, at least with one of the two valves a working position can be set, in which the first and the second working connections are connected with each other.
A hydraulic valve arrangement comprising:
Dependencies are inferred from the claim text.