Global Patent Index - EP 0816690 B1

EP 0816690 B1 2000-09-27 - Hydraulic control system

Title (en)

Hydraulic control system

Title (de)

Hydraulische Steuervorrichtung

Title (fr)

Dispositif de commande hydraulique

Publication

EP 0816690 B1 (DE)

Application

EP 97110054 A

Priority

DE 29611526 U

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 (main, further and additional classification)

F15B 11/04; B66C 13/18

IPC 8 full level (invention and additional information)

B66C 13/18 (2006.01); F15B 11/16 (2006.01)

CPC (invention and additional information)

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

EPO simple patent family

DE 29611526 U1 19960905; AT 196672 T 20001015; DK 0816690 T3 20010108; EP 0816690 A1 19980107; EP 0816690 B1 20000927; ES 2152597 T3 20010201

INPADOC legal status


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