EP 2233641 A3 20120328 - Hydraulic control assembly for the screed of a road finisher
Title (en)
Hydraulic control assembly for the screed of a road finisher
Title (de)
Hydraulische Steueranordnung für die Bohle eines Strassenfertigers
Title (fr)
Agencement de commande hydraulique pour la poutre lisseuse d'une finisseuse de route
Publication
Application
Priority
- DE 102009012384 A 20090309
- DE 102009019839 A 20090504
Abstract (en)
[origin: EP2233641A2] The arrangement (1) has consumer connections (7, 8) for pressurizing a piston (2a) of a double-acting actuation cylinder (2) with load pressure or relief pressure. A pressure regulating valve (15) i.e. proportional valve, regulates the relief pressure, which is applied to the actuation cylinder. The load- or relief pressure is controllable based on a traveling speed of a road finisher. Hydraulic oil is pushing out from a piston side of the actuation cylinder and is supplied to a tank connection (6) through directional valves (11, 13).
IPC 8 full level
E01C 19/48 (2006.01)
CPC (source: EP US)
E01C 19/48 (2013.01 - EP US); E01C 2301/14 (2013.01 - EP US)
Citation (search report)
- [XI] JP 2006161290 A 20060622 - SUMITOMO CONSTR MACHINERY MFG
- [XA] JP 2006161421 A 20060622 - SUMITOMO CONSTR MACHINERY MFG
- [X] JP 2002285513 A 20021003 - CATERPILLAR MITSUBISHI LTD
- [A] FR 2666104 A1 19920228 - COCHERY BOURDIN CHAUSSE [FR]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA ME RS
DOCDB simple family (publication)
EP 2233641 A2 20100929; EP 2233641 A3 20120328; EP 2233641 B1 20130710; EP 2233641 B2 20170301; CN 101831860 A 20100915; CN 101831860 B 20130828; DE 102009019839 A1 20100916; US 2010284742 A1 20101111; US 9267248 B2 20160223
DOCDB simple family (application)
EP 10002445 A 20100309; CN 201010129982 A 20100309; DE 102009019839 A 20090504; US 72058010 A 20100309