EP 1915538 B1 20120404 - CIRCUIT FOR CONTROLLING A DOUBLE-ACTION HYDRAULIC DRIVE CYLINDER
Title (en)
CIRCUIT FOR CONTROLLING A DOUBLE-ACTION HYDRAULIC DRIVE CYLINDER
Title (de)
SCHALTUNG ZUR ANSTEUERUNG EINES DOPPELTWIRKENDEN HYDRAULISCHEN ANTRIEBSZYLINDERS
Title (fr)
MONTAGE POUR COMMANDER UN CYLINDRE D'ENTRAINEMENT HYDRAULIQUE A DOUBLE EFFET
Publication
Application
Priority
- CH 2006000057 W 20060127
- CH 13662005 A 20050819
Abstract (en)
[origin: US7752842B2] Circuit for controlling a double-action hydraulic drive cylinder includes a directional control valve having working ports A and B, a pump port P, and a tank port T, wherein the directional control valve has a neutral position in which pump port P is blocked and working ports A, B are connected to tank port T. A pressure-limiting valve and a controllable load-holding valve are connected to the piston space in parallel, and a regeneration check valve is connected in series between a connection point for the parallel components and the rod space. A first precharge valve is connected between the working port A and the connection point, and a first bypass check valve is connected anti-parallel parallel with the first precharge valve and the load-holding valve. A second precharge valve is connected in series with the directional control valve between the tank port P and the rod space.
IPC 8 full level
F15B 11/044 (2006.01); F15B 11/024 (2006.01)
CPC (source: EP KR US)
B66F 9/22 (2013.01 - EP US); E02F 9/2203 (2013.01 - EP US); F15B 11/003 (2013.01 - EP US); F15B 11/024 (2013.01 - EP KR US); F15B 11/044 (2013.01 - KR); F15B 13/021 (2013.01 - EP US); F15B 2211/30505 (2013.01 - EP US); F15B 2211/3051 (2013.01 - EP US); F15B 2211/30515 (2013.01 - EP US); F15B 2211/30525 (2013.01 - EP US); F15B 2211/3058 (2013.01 - EP US); F15B 2211/3127 (2013.01 - EP US); F15B 2211/3144 (2013.01 - EP US); F15B 2211/31576 (2013.01 - EP US); F15B 2211/31588 (2013.01 - EP US); F15B 2211/329 (2013.01 - EP US); F15B 2211/351 (2013.01 - EP US); F15B 2211/353 (2013.01 - EP US); F15B 2211/50518 (2013.01 - EP US); F15B 2211/55 (2013.01 - EP US); F15B 2211/88 (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 LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007019712 A1 20070222; AT E552425 T1 20120415; CN 101253335 A 20080827; CN 101253335 B 20100616; EP 1915538 A1 20080430; EP 1915538 B1 20120404; JP 2009505013 A 20090205; KR 20080021779 A 20080307; US 2010083651 A1 20100408; US 7752842 B2 20100713
DOCDB simple family (application)
CH 2006000057 W 20060127; AT 06701053 T 20060127; CN 200680030265 A 20060127; EP 06701053 A 20060127; JP 2008526346 A 20060127; KR 20087000872 A 20080111; US 98890806 A 20060127