EP 1481168 A1 20041201 - MULTI-FUNCTION HYDRAULIC VALVE ASSEMBLY
Title (en)
MULTI-FUNCTION HYDRAULIC VALVE ASSEMBLY
Title (de)
HYDRAULISCHES VENTILAGGREGAT FÜR MEHRERE FUNKTIONEN
Title (fr)
ENSEMBLE SOUPAPE HYDRAULIQUE MULTIFONCTIONS
Publication
Application
Priority
- CA 0300212 W 20030214
- US 36107502 P 20020301
- US 12078902 A 20020412
Abstract (en)
[origin: CA2476759A1] A hydraulic valve assembly (10) for selectably delivering hydraulic fluid fr om a supply of hydraulic fluid to one of a first hydraulic operator (80) and a second hydraulic operator (82) is disclosed. The assembly includes first (32 ) and second (34) supply ports which communicate with the supply (18) and four operator ports (44,46,48,50). First (44) and third (48) ports communicate wi th the first hydraulic operator (80). Second (46) and fourth (50) ports communicate with the fourth hydraulic operator (82). First (36) and second (38) chambers are provided. The first chamber communicates with the first supply port and first and second operator ports. The second chamber communicates with the second supply port and third and fourth operator ports . Two selection valves (60,61) operating in unison are each located in each chamber. The selection valves operate between a first position at a first hydraulic fluid pressure and a second position at a second hydraulic fluid pressure. In a first position, the valves permit fluid communication of the first and second supply ports with the first and third operator ports, respectively. In a second position, the valves permit fluid communication wi th the second and fourth operator ports.
IPC 1-7
IPC 8 full level
B66F 9/14 (2006.01); B66F 9/22 (2006.01); F15B 11/20 (2006.01); F15B 13/07 (2006.01)
CPC (source: EP US)
B66F 9/143 (2013.01 - EP US); B66F 9/148 (2013.01 - EP); B66F 9/22 (2013.01 - EP); F15B 11/20 (2013.01 - EP); F15B 13/07 (2013.01 - EP); Y10T 137/2554 (2015.04 - EP US); Y10T 137/8667 (2015.04 - EP US); Y10T 137/8671 (2015.04 - EP US)
Citation (search report)
See references of WO 03074884A1
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 PT SE SI SK TR
DOCDB simple family (publication)
AT E444449 T1 20091015; AU 2003203106 A1 20030916; CA 2476759 A1 20030912; CA 2476759 C 20110726; CN 100404882 C 20080723; CN 1639467 A 20050713; DE 60329471 D1 20091112; EP 1481168 A1 20041201; EP 1481168 B1 20090930; JP 2005519244 A 20050630
DOCDB simple family (application)
AT 03701411 T 20030214; AU 2003203106 A 20030214; CA 2476759 A 20030214; CN 03804959 A 20030214; DE 60329471 T 20030214; EP 03701411 A 20030214; JP 2003573302 A 20030214