EP 1626183 A1 20060215 - Inlet section for load sensing directional control valves
Title (en)
Inlet section for load sensing directional control valves
Title (de)
Einlassbereich für ein von Last ausgeglichenes gerichtetes Regelventil
Title (fr)
Section d'admmission pour soupapes de commande directionelle à compensation de charge
Publication
Application
Priority
EP 04018890 A 20040810
Abstract (en)
The invention falls within the field of load sensing directional control valves and in particular it refers to an inlet section for load sensing directional control valves operating with open centre and closed centre circuit, with or without a pressure reducer valve for internal pilot pressure supply, a load-sensing signal unloader valve, a load-sensing signal pressure relief valve, while always present is a three way flow compensator (C) and the internal pilot lines; said inlet section comprises in combination a variable area damper (4), a check valve (5), a copy-spool (2) and a calibrated check valve (6).
IPC 8 full level
F15B 13/04 (2006.01)
CPC (source: EP)
F15B 13/0417 (2013.01)
Citation (search report)
- [X] DE 19800721 A1 19990715 - DANFOSS AS [DK]
- [X] US 4118149 A 19781003 - HAGBERG LARS
- [X] US 5182909 A 19930202 - STELLWAGEN ARMIN [DE]
- [A] DE 4328283 A1 19940310 - REXROTH SIGMA [FR]
- [A] US 4011721 A 19770315 - YIP JAMES KWOK-FUN
- [A] FR 2745337 A1 19970829 - REXROTH SIGMA [FR]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1626183 A1 20060215; EP 1626183 B1 20070103; AT E350585 T1 20070115; DE 602004004109 D1 20070215; DE 602004004109 T2 20070712; ES 2279998 T3 20070901
DOCDB simple family (application)
EP 04018890 A 20040810; AT 04018890 T 20040810; DE 602004004109 T 20040810; ES 04018890 T 20040810