EP 0935714 A1 19990818 - VALVE ARRANGEMENT WITH PRESSURE BALANCE
Title (en)
VALVE ARRANGEMENT WITH PRESSURE BALANCE
Title (de)
VENTILANORDNUNG MIT DRUCKWAAGE
Title (fr)
SYSTEME DE SOUPAPES A BALANCE DE PRESSION
Publication
Application
Priority
- DE 9702425 W 19971020
- DE 19646445 A 19961111
Abstract (en)
[origin: DE19646445A1] The invention concerns a valve arrangement (1) for supplying, in a manner adapted to the pressure and volume flow, at least one consumer which, via two working connections (A1, B1, A2, B2) of a constantly adjustable directional control valve (4, 6), can be supplied with hydraulic fluid or connected to a tank (T). Associated with the two working connections (A1, B1, A2, B2) of the valve arrangement (1) is a common pressure balance (16, 18) whose piston (66) is guided in an axially displaceable manner in an axial bore (32) in the directional control valve slide (12) such that, when the directional control valve (4, 6) is suitably triggered, one of the two working connections (A1, B1, A2, B2) can be connected alternatively to the pump connection (P). A control pressure (25), which corresponds, for example, to the highest system load pressure, the individual load pressure or a pressure derived therefrom, acts on both end faces of the directional control valve slide (12) and on the spring side of the pressure balance piston (66).
IPC 1-7
IPC 8 full level
F15B 11/05 (2006.01); F15B 13/044 (2006.01)
CPC (source: EP US)
F15B 11/05 (2013.01 - EP US); F15B 13/044 (2013.01 - EP US); F15B 2211/30555 (2013.01 - EP US); F15B 2211/3144 (2013.01 - EP US); F15B 2211/327 (2013.01 - EP US); F15B 2211/329 (2013.01 - EP US); F15B 2211/35 (2013.01 - EP US); F15B 2211/605 (2013.01 - EP US); Y10T 137/86702 (2015.04 - EP US); Y10T 137/87169 (2015.04 - EP US)
Citation (search report)
See references of WO 9821485A1
Designated contracting state (EPC)
DE FI FR GB IT SE
DOCDB simple family (publication)
DE 19646445 A1 19980514; DE 59709115 D1 20030213; EP 0935714 A1 19990818; EP 0935714 B1 20030108; JP 2001504198 A 20010327; PL 333275 A1 19991122; US 6192928 B1 20010227; WO 9821485 A1 19980522
DOCDB simple family (application)
DE 19646445 A 19961111; DE 59709115 T 19971020; DE 9702425 W 19971020; EP 97945768 A 19971020; JP 52201898 A 19971020; PL 33327597 A 19971020; US 29783199 A 19990519