ClassID:

146259

F15B2211/30555 - CPC Classification

Classification description:

Circuits for servomotor systems; Directional control characterised by the type of valves; Directional control valves, e.g. 4/3-directional control valve; In combination with a pressure compensating valve Inlet and outlet of the pressure compensating valve being connected to the directional control valve

Recent Application in this class:
#1
20240360850
2024-10-31

ACTUATOR DEADHEAD/STALL DETECTION IN A LOAD SENSE HYDRAULIC SYSTEM

#2
20240060273
2024-02-22

Hydraulic system for working machine

#3
20240052597
2024-02-15

Hydraulic system for working machine

#4
20230160179
2023-05-25

Hydraulic system for working machine

#5
20230021137
2023-01-19

WORKING MACHINE

#6
20220373000
2022-11-24

HYDRAULIC DISTRIBUTOR WITH PRESSURE COMPENSATOR FOR DIRECTIONAL VALVES

#7
20220298754
2022-09-22

Control valve of hydraulic system for working machine

#8
20220098833
2022-03-31

Hydraulic system for working machine

#9
20220003249
2022-01-06

Fluid control device

#10
20210270015
2021-09-02

Hydraulic circuit of construction machine

#11
20210207622
2021-07-08

Flow control valve and hydraulic machine including the same

#12
20200208378
2020-07-02

Engineering machinery hydraulic system

#13
20190194006
2019-06-27

Hydraulic driving system

#14
20190136490
2019-05-09

Hydraulic power control circuit and construction vehicle comprising such circuit

#15
20180372127
2018-12-27

Modular directional valve with two or more elements of mixed type

#16
20180347153
2018-12-06

Pressure compensation unit

#17
20180334784
2018-11-22

Hydraulic system for working machine and control valve

#18
20180142445
2018-05-24

Electro-hydraulic feed delivery system

#19
20170370382
2017-12-28

Hydraulic drive system

#20
20170350421
2017-12-07

MANIFOLD FOR A DIRECTIONAL CONTROL VALVE FOR A VALVE ACTUATOR

#21
20170350096
2017-12-07

HYDRAULIC PUMP CONTROL APPARATUS FOR CONSTRUCTION EQUIPMENT AND CONTROL METHOD THEREOF

#22
20170241555
2017-08-24

Load sensing valve device

#23
20170089038
2017-03-30

Hydraulic drive system for electrically-operated hydraulic work machine

#24
20160333897
2016-11-17

Independent metering valve priority in open center hydraulic system

#25
20160312807
2016-10-27

Hydraulic system including independent metering valve with flowsharing

#26
20150275468
2015-10-01

Hydraulic system for working machine

#27
20150136251
2015-05-21

Hydraulic control assembly

#28
20150059568
2015-03-05

Hydraulic control circuit with regeneration valve

#29
20140208734
2014-07-31

Work machine

#30
20130213024
2013-08-22

Hydraulic drive and method for controlling such a hydraulic drive

#31
20130153043
2013-06-20

FLOW FORCE-COMPENSATING VALVE ELEMENT WITH LOAD CHECK

#32
20130146162
2013-06-13

Pressure compensated hydraulic system having differential pressure control

#33
20130139918
2013-06-06

Hydraulic system and hydraulic distributor for the actuating working machines

#34
20120285158
2012-11-15

Pressure limiting in hydraulic systems

#35
20120067443
2012-03-22

Hydraulic system for working machine

#36
20110265467
2011-11-03

Control device for hybrid construction machine

#37
20110204267
2011-08-25

Hydraulic valve arrangement

#38
20110083762
2011-04-14

Hydraulic system having a backpressure control valve

#39
20100269935
2010-10-28

Valve system

#40
20100252354
2010-10-07

Differential pressure control

#41
20100176324
2010-07-15

Load sensing directional control valve with an element having priority under saturation conditions

#42
20100139476
2010-06-10

Valve arrangement having individual pressure scale and load-lowering valve

#43
20090266070
2009-10-29

Post-pressure compensated hydraulic control valve with load sense pressure limiting

#44
20090173067
2009-07-09

Hydraulic control valve system with isolated pressure compensation

#45
20090094972
2009-04-16

Hydraulic control assembly

#46
20090077839
2009-03-26

Backhoe hydraulic system

#47
20090031891
2009-02-05

Hydraulic circuit for rapid bucket shake out

#48
20080307783
2008-12-18

Load sense boost device

#49
20080282691
2008-11-20

Pressure-compensating directional control valve

#50
20080245222
2008-10-09

Hydraulic valve arrangement

#51
20080224073
2008-09-18

Hydraulic valve arrangement

#52
20080202111
2008-08-28

Load sense boost device

#53
20080078174
2008-04-03

Backhoe hydraulic system

#54
20080072749
2008-03-27

Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve

#55
20080047423
2008-02-28

Fluid system with signal-mimicking device and associated method

#56
20080000535
2008-01-03

Control valve with load sense signal conditioning

#57
20070253840
2007-11-01

Control system using a single proportional valve

#58
20070245889
2007-10-25

Hydraulic Control Arrangement

#59
20060218914
2006-10-05

Hydraulic control arrangement

#60
20050287017
2005-12-29

Saturation-proof hydraulic control device that is composed of two or more elements

#61
17443836
2022-07-05

Flow management of a hydraulic system