EP 2557239 A1 20130213 - Combined closed loop hydraulic circuit and hydraulic energy storage system
Title (en)
Combined closed loop hydraulic circuit and hydraulic energy storage system
Title (de)
Kombinierter hydraulischer Kreislauf mit geschlossenem Regelkreis und hydraulisches Energiespeichersystem
Title (fr)
Circuit hydraulique combiné en boucle fermée et système de stockage d'énergie hydraulique
Publication
Application
Priority
GB 201113884 A 20110811
Abstract (en)
This disclosure is directed towards a hydraulic control system (10, 47, 54) comprising a combined closed loop hydraulic circuit (14) for controlling two or more hydraulic actuators (21, 22) and a hydraulic energy storage system comprising one or more accumulators (19, 20). The hydraulic control system (10, 47, 54) further comprises a power unit (11). The closed loop hydraulic circuit (14) comprises a hydraulic machine (16) operably connected to the power unit (11), first and second accumulators (19, 20) for storing hydraulic fluid, first and second hydraulic actuators (21, 22), a first valve (17) for selectively directing hydraulic fluid between the hydraulic machine (16) and either the first accumulator (19) or the first hydraulic actuator (21) and a second valve (18) for selectively directing hydraulic fluid between the hydraulic machine (16) and either the second accumulator (20) or the second hydraulic actuator (22). The first hydraulic actuator (21) is fluidly connected to the second hydraulic actuator (22) by one or more conduits (29).
IPC 8 full level
E02F 9/22 (2006.01); F15B 1/02 (2006.01); F15B 11/024 (2006.01)
CPC (source: EP GB RU)
E02F 3/431 (2013.01 - GB); E02F 3/435 (2013.01 - GB); E02F 9/2217 (2013.01 - EP); E02F 9/2289 (2013.01 - EP); E02F 9/2296 (2013.01 - EP); F15B 1/027 (2013.01 - EP); F15B 9/08 (2013.01 - GB); F15B 15/1409 (2013.01 - GB); F15B 21/14 (2013.01 - EP RU); F15B 1/024 (2013.01 - RU); F15B 11/163 (2013.01 - RU); F15B 2211/20546 (2013.01 - EP); F15B 2211/20561 (2013.01 - EP); F15B 2211/20569 (2013.01 - RU); F15B 2211/212 (2013.01 - EP); F15B 2211/27 (2013.01 - EP); F15B 2211/7121 (2013.01 - EP); F15B 2211/88 (2013.01 - EP)
Citation (applicant)
US 6520731 B2 20030218 - MACLEOD IAN J C [US]
Citation (search report)
- [I] DE 202007011783 U1 20081224 - LIEBHERR FRANCE SAS COLMAR [FR]
- [I] DE 9218087 U1 19931021 - MANNESMANN AG [DE]
- [YD] US 6520731 B2 20030218 - MACLEOD IAN J C [US]
- [Y] US 7896125 B2 20110301 - IVANTYSYNOVA MONIKA [IN], et al
- [A] DE 2106292 A1 19720907
- [A] DE 202009004071 U1 20100812 - LIEBHERR FRANCE SAS [FR]
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2557239 A1 20130213; CN 102927069 A 20130213; GB 201113884 D0 20110928; GB 2493706 A 20130220; GB 2493706 B 20131106; RU 2012134393 A 20140220; RU 2605514 C2 20161220
DOCDB simple family (application)
EP 12179392 A 20120806; CN 201210282724 A 20120809; GB 201113884 A 20110811; RU 2012134393 A 20120810