Global Patent Index - EP 2761190 B1

EP 2761190 B1 20170308 - HYDRAULIC SYSTEM WITH RETURN LINE SUCTION AND BOOST FILTER

Title (en)

HYDRAULIC SYSTEM WITH RETURN LINE SUCTION AND BOOST FILTER

Title (de)

HYDRAULIKSYSTEM MIT SAUG-RÜCKLAUFFILTER

Title (fr)

SYSTÈME HYDRAULIQUE À FILTRE DE RETOUR ET ASPIRATION

Publication

EP 2761190 B1 20170308 (DE)

Application

EP 12746359 A 20120815

Priority

  • DE 102011083874 A 20110930
  • EP 2012065931 W 20120815

Abstract (en)

[origin: WO2013045167A2] The invention relates to a hydraulic system, preferably for piloting and actuating a two-cylinder thick matter pump. The hydraulic system comprises a tank (68) for receiving hydraulic oil, a primary circuit having at least one hydraulic consumer (AH, MH) which has at least one primary pump (36, 38, 61, 70), which is loaded with hydraulic oil via a first suction line (42), and is connected on the outlet side to at least one first return line, and which has a suction/return filter (40) which communicates with the first suction line (42) on the outlet side and is loaded on the inlet side with return oil from the at least one return line. A special feature of the invention consists in that the first suction line (42) communicates with the tank (68) via a separate replenishing suction line (86) and a suction filter (66), wherein a replenishing suction valve (88) which is preloaded in the direction of the suction filter (66) is arranged in the replenishing suction line (86).

IPC 8 full level

F15B 21/04 (2006.01)

CPC (source: EP US)

E01C 19/475 (2013.01 - US); F15B 1/027 (2013.01 - US); F15B 13/07 (2013.01 - US); F15B 21/041 (2013.01 - EP US)

Designated contracting state (EPC)

AL 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 RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2013045167 A2 20130404; WO 2013045167 A3 20130627; BR 112014007470 A2 20170404; CN 103890411 A 20140625; CN 103890411 B 20161102; DE 102011083874 A1 20130404; EP 2761190 A2 20140806; EP 2761190 B1 20170308; JP 2014530330 A 20141117; JP 6082745 B2 20170215; KR 101968787 B1 20190412; KR 20140078635 A 20140625; US 2014230424 A1 20140821; US 9551362 B2 20170124

DOCDB simple family (application)

EP 2012065931 W 20120815; BR 112014007470 A 20120815; CN 201280047631 A 20120815; DE 102011083874 A 20110930; EP 12746359 A 20120815; JP 2014532291 A 20120815; KR 20147007916 A 20120815; US 201214346024 A 20120815