EP 1588057 A1 20051026 - HYDRAULIC SYSTEM FOR LINEAR DRIVES CONTROLLED BY A DISPLACER ELEMENT
Title (en)
HYDRAULIC SYSTEM FOR LINEAR DRIVES CONTROLLED BY A DISPLACER ELEMENT
Title (de)
HYDRAULIKSYSTEM FÜR VERDRÄNGERGESTEUERTE LINEARANTRIEBE
Title (fr)
SYSTEME HYDRAULIQUE POUR ENTRAINEMENTS LINEAIRES COMMANDES PAR DES ELEMENTS DEPLACEURS
Publication
Application
Priority
- DE 2004000032 W 20040114
- DE 10303360 A 20030129
Abstract (en)
[origin: WO2004067969A1] The invention relates to a hydraulic system for linear drives controlled by displacer elements, especially for mobile working machines. Said hydraulic system comprises at least one differential cylinder, at least one high pressure circuit comprising at least one pump with adjustable conveying capacity and a reversal of the direction of conveyance and which is connected to a low pressure system by means of at least two unlockable non-return valves. The aim of the invention is produce a hydraulic system which avoids numerous disadvantages related to prior art, enables the linear cylinders to be controlled in a precise and energy efficient manner, can be maintained in a simple and economic manner and can be easily integrated into the overall hydraulic system of said type of machines. The non-return valves (7, 8) are thus connected to an electronic control device enabling switchingless transfer between an inlet or an outlet of the differential cylinders and a floating position.
IPC 1-7
IPC 8 full level
F15B 7/00 (2006.01); F15B 21/08 (2006.01)
CPC (source: EP US)
F15B 7/006 (2013.01 - EP US); F15B 21/082 (2013.01 - EP US)
Citation (search report)
See references of WO 2004067969A1
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 RO SE SI SK TR
DOCDB simple family (publication)
WO 2004067969 A1 20040812; AT E358777 T1 20070415; DE 10303360 A1 20040819; DE 112004000521 D2 20051215; DE 502004003395 D1 20070516; EP 1588057 A1 20051026; EP 1588057 B1 20070404; ES 2285408 T3 20071116; US 2006218913 A1 20061005; US 7543449 B2 20090609
DOCDB simple family (application)
DE 2004000032 W 20040114; AT 04701896 T 20040114; DE 10303360 A 20030129; DE 112004000521 T 20040114; DE 502004003395 T 20040114; EP 04701896 A 20040114; ES 04701896 T 20040114; US 54400004 A 20040114