Global Patent Index - EP 1178219 B1

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

EP 1178219 B1 20050427 (EN)

Application

EP 00830561 A 20000804

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

F15B 11/00; F15B 21/04

IPC 8 full level

F15B 11/00 (2006.01); F15B 21/04 (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 294332 T 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