EP 0684388 A2 19951129 - Load-sensing active hydraulic control device.
Title (en)
Load-sensing active hydraulic control device.
Title (de)
Lastdruckkompensierte hydraulische Steuereinrichtung.
Title (fr)
Système de commande hydraulique de détection de la charge.
Publication
Application
Priority
- EP 92311770 A 19921223
- JP 35712891 A 19911225
- JP 21224492 A 19920716
- JP 25051792 A 19920826
Abstract (en)
A load-sensing active hydraulic control device which includes a service port connected to a breaker or scissors in a power shovel of the like and is capable of preventing an excessive increase in pressure on the side of the service port from affecting other actuators. An on-off valve (34) is connected to a load detecting passage (33) of a change-over valve (3) connected to the side of a service port and is closed to prevent a pressure on the side of the service port from being fed back to a regulator when a load pressure on the side of a main actuator (2) is equal to or exceeds a set pressure.
IPC 1-7
IPC 8 full level
E02F 9/22 (2006.01); F15B 11/16 (2006.01)
CPC (source: EP)
E02F 9/2225 (2013.01); E02F 9/2232 (2013.01); E02F 9/2296 (2013.01); F15B 11/162 (2013.01); F15B 11/163 (2013.01); F15B 11/166 (2013.01); F15B 2211/20553 (2013.01); F15B 2211/25 (2013.01); F15B 2211/30555 (2013.01); F15B 2211/329 (2013.01); F15B 2211/40584 (2013.01); F15B 2211/46 (2013.01); F15B 2211/473 (2013.01); F15B 2211/50518 (2013.01); F15B 2211/5153 (2013.01); F15B 2211/55 (2013.01); F15B 2211/575 (2013.01); F15B 2211/6054 (2013.01); F15B 2211/6355 (2013.01); F15B 2211/654 (2013.01); F15B 2211/71 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0550257 A1 19930707; EP 0550257 B1 19980506; DE 69225392 D1 19980610; DE 69225392 T2 19980903; DE 69228489 D1 19990401; DE 69228489 T2 19990930; DE 69229966 D1 19991014; DE 69229966 T2 20000309; DE 69229968 D1 19991014; DE 69229968 T2 20000309; EP 0684387 A2 19951129; EP 0684387 A3 19961030; EP 0684387 B1 19990908; EP 0684388 A2 19951129; EP 0684388 A3 19961106; EP 0684388 B1 19990224; EP 0684389 A2 19951129; EP 0684389 A3 19961030; EP 0684389 B1 19990908
DOCDB simple family (application)
EP 92311770 A 19921223; DE 69225392 T 19921223; DE 69228489 T 19921223; DE 69229966 T 19921223; DE 69229968 T 19921223; EP 95202286 A 19921223; EP 95202287 A 19921223; EP 95202288 A 19921223