EP 0816690 B1 20000927 - Hydraulic control system
Title (en)
Hydraulic control system
Title (de)
Hydraulische Steuervorrichtung
Title (fr)
Dispositif de commande hydraulique
Publication
Application
Priority
DE 29611526 U 19960702
Abstract (en)
[origin: EP0816690A1] A feed regulator (Z) is arranged upstream of each proportional path control valve (P1,P2,P3) in a connecting conduit (7) to the pump conduit (P). It is controllable by 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. A damping system (C) for pressure fluctuations is arranged on the closed side of the three-way regulator in a load pressure control conduit (14). A selectively by-passable, quantity-limiting throttle (25) is installed in the pump conduit between the three-way regulator and at least one proportional path control valve of the group of users.
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 0816690 A1 19980107; EP 0816690 B1 20000927; AT E196672 T1 20001015; DE 29611526 U1 19960905; DE 59702396 D1 20001102; DK 0816690 T3 20010108; ES 2152597 T3 20010201
DOCDB simple family (application)
EP 97110054 A 19970619; AT 97110054 T 19970619; DE 29611526 U 19960702; DE 59702396 T 19970619; DK 97110054 T 19970619; ES 97110054 T 19970619