EP 2325390 B2 20190626 - Screed and road finisher
Title (en)
Screed and road finisher
Title (de)
Einbaubohle und Straßenfertiger
Title (fr)
Poutre lisseuse et finisseuse de route
Publication
Application
Priority
EP 09013219 A 20091020
Abstract (en)
[origin: US2011091278A1] In a screed with a basic screed and at least one extendable screed movable relative to the basic screed with a hydraulic cylinder and an electro-hydraulic control comprising a magnet-actuated directional control valve for at least controlling the direction of the hydraulic cylinder, the directional control valve for changing the rate of motion of the hydraulic cylinder is guided by an operator or automatically and is a proportional directional control valve (W) with proportional-electric direct actuation or proportional-electric-hydraulic pilot control. The proportional directional control valve for the hydraulic cylinder is connected on the actuation side with an electro-hydraulic control of a hydraulic system of the road finishing machine.
IPC 8 full level
E01C 19/40 (2006.01)
CPC (source: EP US)
E01C 19/40 (2013.01 - EP US); E01C 2301/16 (2013.01 - EP US); E01C 2301/20 (2013.01 - EP US)
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
DOCDB simple family (publication)
US 2011091278 A1 20110421; US 8353642 B2 20130115; CN 102041770 A 20110504; CN 102041770 B 20141119; EP 2325390 A1 20110525; EP 2325390 B1 20120530; EP 2325390 B2 20190626; JP 2011089387 A 20110506; JP 5751793 B2 20150722; PL 2325390 T3 20121231; PL 2325390 T5 20191231
DOCDB simple family (application)
US 90734110 A 20101019; CN 201010512860 A 20101020; EP 09013219 A 20091020; JP 2010228263 A 20101008; PL 09013219 T 20091020