EP 2229537 A1 20100922 - HYDRAULIC DRIVE DEVICE HAVING TWO PRESSURE CHAMBERS AND METHOD FOR OPERATING A HYDRAULIC DRIVE DEVICE HAVING TWO PRESSURE CHAMBERS
Title (en)
HYDRAULIC DRIVE DEVICE HAVING TWO PRESSURE CHAMBERS AND METHOD FOR OPERATING A HYDRAULIC DRIVE DEVICE HAVING TWO PRESSURE CHAMBERS
Title (de)
HYDRAULISCHE ANTRIEBSVORRICHTUNG MIT ZWEI DRUCKRÄUMEN UND VERFAHREN ZUM BETREIBEN EINER HYDRAULISCHEN ANTRIEBSVORRICHTUNG MIT ZWEI DRUCKRÄUMEN
Title (fr)
DISPOSITIF D'ENTRAÎNEMENT HYDRAULIQUE À DEUX CHAMBRES DE PRESSION, ET PROCÉDÉ PERMETTANT DE FAIRE FONCTIONNER UN DISPOSITIF D'ENTRAÎNEMENT HYDRAULIQUE À DEUX CHAMBRES DE PRESSION
Publication
Application
Priority
- EP 2010050199 W 20100111
- DE 102009005998 A 20090123
Abstract (en)
[origin: WO2010084043A1] The invention relates to a hydraulic drive device, comprising a piston which is guided displaceably in a cylinder chamber along a working axis and adjoins a working pressure chamber that can be pressurized by hydraulic fluid, and comprising a control means that is guided in the piston at least in some sections between different control states in order to control the flow of the hydraulic fluid from a high pressure supply into the working pressure chamber to move the piston in the working direction and from the working pressure chamber to a return flow chamber, wherein the region of the piston facing away from the working pressure chamber delimits a low pressure chamber that is pressurized by a low pressure supply for hydraulic fluid during the operation of the device such that the piston is moved back against the working direction when the control means connects the working pressure chamber to the return flow chamber. The invention furthermore relates to a method for operating a hydraulic drive device.
IPC 8 full level
F15B 9/09 (2006.01); F15B 13/04 (2006.01)
CPC (source: EP US)
F15B 9/09 (2013.01 - EP US); F15B 13/0403 (2013.01 - EP US); F15B 15/204 (2013.01 - EP US)
Citation (search report)
See references of WO 2010084043A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2010084043 A1 20100729; CN 102292554 A 20111221; CN 102292554 B 20140709; DE 102009005998 A1 20100805; DE 102009005998 B4 20121227; EP 2229537 A1 20100922; EP 2229537 B1 20130724; EP 2229537 B8 20131030; US 2011271667 A1 20111110; US 9121419 B2 20150901
DOCDB simple family (application)
EP 2010050199 W 20100111; CN 201080005327 A 20100111; DE 102009005998 A 20090123; EP 10701488 A 20100111; US 201013145930 A 20100111