EP 0816689 B1 20001206 - Hydraulic control system
Title (en)
Hydraulic control system
Title (de)
Hydraulische Steuervorrichtung
Title (fr)
Dispositif de commande hydraulique
Publication
Application
Priority
DE 29611525 U 19960702
Abstract (en)
[origin: EP0816689A1] Upstream of each proportional path control valve in a connecting conduit (7) to the pump conduit (P) is arranged a feed regulator (Z), which is controllable from the load pressure of the corresponding user and the feed pressure of the proportional path control valve. A three-way regulator (D) common to all users (V) is fitted between the pump conduit and the return flow conduit (R) and is controllable by the pump pressure and the highest load pressure. In the pump conduit between the three-way regulator and at least one proportional path control valve (P1,P2,P3) of the group of users, a quantity limiting throttle (25) is selectively by-passable by a pressure limiting device (29,30,31).
IPC 1-7
IPC 8 full level
B66C 13/18 (2006.01); F15B 11/04 (2006.01); F15B 11/16 (2006.01)
CPC (source: EP)
B66C 13/18 (2013.01); F15B 11/162 (2013.01); F15B 2211/20538 (2013.01); F15B 2211/30535 (2013.01); F15B 2211/30595 (2013.01); F15B 2211/3111 (2013.01); F15B 2211/353 (2013.01); F15B 2211/40507 (2013.01); F15B 2211/40515 (2013.01); F15B 2211/426 (2013.01); F15B 2211/45 (2013.01); F15B 2211/473 (2013.01); F15B 2211/6054 (2013.01); F15B 2211/6055 (2013.01); F15B 2211/7142 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0816689 A1 19980107; EP 0816689 B1 20001206; AT E197984 T1 20001215; DE 29611525 U1 19960905; DE 59702707 D1 20010111; DK 0816689 T3 20010122; ES 2153623 T3 20010301
DOCDB simple family (application)
EP 97110053 A 19970619; AT 97110053 T 19970619; DE 29611525 U 19960702; DE 59702707 T 19970619; DK 97110053 T 19970619; ES 97110053 T 19970619