EP 1781952 B1 20110907 - HYDRAULIC CONTROL ARRANGEMENT
Title (en)
HYDRAULIC CONTROL ARRANGEMENT
Title (de)
HYDRAULISCHE STEUERANORDNUNG
Title (fr)
ENSEMBLE DE COMMANDE HYDRAULIQUE
Publication
Application
Priority
- EP 2005006826 W 20050623
- DE 102004035632 A 20040722
- DE 102005022275 A 20050510
Abstract (en)
[origin: US2007245889A1] The invention relates to a hydraulic control arrangement and a pilot-operated pressure relief valve therefor. Said hydraulic control arrangement comprises a differential cylinder provided with a pressure chamber on the piston rod side thereof and another pressure chamber at the bottom thereof which can be connected to a pump or a tank by means of a control valve arrangement in order to actuate the differential cylinder. The pressure in a pressure chamber is defined by a pilot-operated pressure relief valve provided with a pressure switching stage by which means the pressure regulated by the pressure relief valve can be lowered according to the pressure in the other pressure chamber.
IPC 8 full level
F15B 11/024 (2006.01); F15B 11/028 (2006.01); F15B 11/042 (2006.01); F16K 17/06 (2006.01); F16K 17/10 (2006.01)
CPC (source: EP US)
F15B 11/024 (2013.01 - EP US); F15B 11/028 (2013.01 - EP US); F15B 11/0423 (2013.01 - EP US); F15B 13/024 (2013.01 - EP US); F15B 2211/30505 (2013.01 - EP US); F15B 2211/30555 (2013.01 - EP US); F15B 2211/3111 (2013.01 - EP US); F15B 2211/3133 (2013.01 - EP US); F15B 2211/3144 (2013.01 - EP US); F15B 2211/31576 (2013.01 - EP US); F15B 2211/329 (2013.01 - EP US); F15B 2211/50518 (2013.01 - EP US); F15B 2211/5159 (2013.01 - EP US); F15B 2211/528 (2013.01 - EP US); F15B 2211/6051 (2013.01 - EP US); F15B 2211/75 (2013.01 - EP US); F15B 2211/8609 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2007245889 A1 20071025; AT E523697 T1 20110915; DE 102005022275 A1 20060216; EP 1781952 A1 20070509; EP 1781952 B1 20110907; WO 2006010419 A1 20060202
DOCDB simple family (application)
US 63177905 A 20050623; AT 05755620 T 20050623; DE 102005022275 A 20050510; EP 05755620 A 20050623; EP 2005006826 W 20050623