EP 1178219 B1 20050427 - A hydraulic device for controlling a piloting pressure
Title (en)
A hydraulic device for controlling a piloting pressure
Title (de)
Hydraulische Vorrichtung zum Steuern eines Vorsteuerdrucks
Title (fr)
Dispositif hydraulique pour le réglage d'une pression de pilotage
Publication
Application
Priority
EP 00830561 A 20000804
Abstract (en)
[origin: EP1178219A1] The hydraulic device for controlling a piloting pressure (18) comprises a two-way valve (2) located on a hydraulic piloting conduit (17) which provides a piloting pressure to a controlling overcentre valve (16). The piloting pressure is taken from a delivery branch (15) of a hydraulic actuator (9) during a load lowering phase (12). The two-way valve (2) is normally open and is closed by effect of a predetermined pressure on the delivery branch (15). An adjustable choke (19) is arranged in parallel to the two-way valve (2) on an auxiliary by-pass conduit (20). The device enables a rapid and progressive activation of the hydraulic actuator (9) during the load lowering phase. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 21/045 (2019.01); F15B 11/00 (2006.01)
CPC (source: EP)
F15B 11/003 (2013.01); F15B 21/045 (2013.01); F15B 2211/30525 (2013.01); F15B 2211/329 (2013.01); F15B 2211/355 (2013.01); F15B 2211/40515 (2013.01); F15B 2211/40584 (2013.01); F15B 2211/413 (2013.01); F15B 2211/41527 (2013.01); F15B 2211/428 (2013.01); F15B 2211/46 (2013.01); F15B 2211/473 (2013.01); F15B 2211/50545 (2013.01); F15B 2211/6355 (2013.01); F15B 2211/67 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1178219 A1 20020206; EP 1178219 B1 20050427; AT E294332 T1 20050515; DE 60019743 D1 20050602; DE 60019743 T2 20060302
DOCDB simple family (application)
EP 00830561 A 20000804; AT 00830561 T 20000804; DE 60019743 T 20000804