EP 0176381 B1 19880511 - HIGH-PRESSURE HYDRAULIC DIRECTIONAL CONTROL VALVE WITH A PILOT PRESSURE GENERATOR
Title (en)
HIGH-PRESSURE HYDRAULIC DIRECTIONAL CONTROL VALVE WITH A PILOT PRESSURE GENERATOR
Publication
Application
Priority
FR 8413505 A 19840831
Abstract (en)
[origin: US4610271A] A high pressure hydraulic distributor with a pilot pressure generator, in which a device for reducing pressure is integrated into a distribution section of a compound high pressure hydraulic distributor. The displacement of the slide of the distributor of the section concerned modifies automatically the calibration of the pressure reducer and permits obtaining a reduced pressure which is a function of the displacement of the slide. This reduced pressure is utilized as the pilot pressure for the control means of the source of hydraulic fluid pressure which feeds the distributor.
IPC 1-7
IPC 8 full level
B66F 9/22 (2006.01); F15B 11/16 (2006.01); F15B 13/04 (2006.01); F15B 13/06 (2006.01); F16K 11/07 (2006.01)
CPC (source: EP US)
B66F 9/22 (2013.01 - EP US); F15B 13/0403 (2013.01 - EP US); F15B 13/0418 (2013.01 - EP US); Y10T 137/86702 (2015.04 - EP US); Y10T 137/87185 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0176381 A1 19860402; EP 0176381 B1 19880511; DE 3562653 D1 19880616; FR 2569786 A1 19860307; FR 2569786 B1 19870320; JP S6165902 A 19860404; US 4610271 A 19860909
DOCDB simple family (application)
EP 85401579 A 19850801; DE 3562653 T 19850801; FR 8413505 A 19840831; JP 19003785 A 19850830; US 76380985 A 19850808