ClassID:

146276

F15B2211/3144 - CPC Classification

Classification description:

Circuits for servomotor systems; Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves

Recent Application in this class:
#1
20260049622
2026-02-19

OPEN AND CLOSED CIRCUIT PARALLEL DRIVE SYSTEM AND CONTROL METHOD BASED ON A FOUR-CHAMBER HYDRAULIC CYLINDER

#2
20250043805
2025-02-06

METHOD FOR CONTROLLING THE ROTATION SPEED OF A MOTOR

#3
20240392814
2024-11-28

Hydraulic arrangement

#4
20240240653
2024-07-18

Fan Drive Device with Proportional Valve

#5
20240200581
2024-06-20

Velocity and position compound control system for pump-valve dual-source driven hydraulic cylinder

#6
20240117601
2024-04-11

Hydraulic control system

#7
20240026908
2024-01-25

Arrangement for operating a hydraulic consumer

#8
20230332631
2023-10-19

Hydraulic system

#9
20230175536
2023-06-08

Control device and hydraulic system including the same

#10
20230139226
2023-05-04

Controller and method for hydraulic apparatus

#11
20230099778
2023-03-30

Control device and hydraulic system including the same

#12
20220275605
2022-09-01

Hydraulic control system

#13
20220242295
2022-08-04

Closed center hoist valve with snubbing

#14
20220128069
2022-04-28

Vehicle for a thick matter pump apparatus

#15
20220025914
2022-01-27

System, valve assembly, and methods for oscillation control of a hydraulic machine

#16
20210254637
2021-08-19

Hydraulic valve arrangement

#17
20210190095
2021-06-24

Hydraulic system with an energy recovery circuit

#18
20200208378
2020-07-02

Engineering machinery hydraulic system

#19
20200200169
2020-06-25

Linear actuator assembly and system

#20
20190285191
2019-09-19

Valve system in an injection molding system

#21
20190032682
2019-01-31

Proportional sequence valve with pressure amplification device

#22
20180320711
2018-11-08

Adaptive control of hydraulic tool on remote controlled demolition robot

#23
20180306211
2018-10-25

Hydraulic system and method for controlling a hydraulic system

#24
20180266415
2018-09-20

Linear actuator assembly and system

#25
20180202467
2018-07-19

Hydraulic drive device and method for controlling the same

#26
20180195254
2018-07-12

Apparatus and method for controlling construction machine

#27
20180044143
2018-02-15

Actuator control device and work vehicle

#28
20180043590
2018-02-15

Valve system in an injection molding system

#29
20170253468
2017-09-07

Hydraulic control circuit for crane slewing gear

#30
20170241555
2017-08-24

Load sensing valve device

#31
20170191506
2017-07-06

System for controlling the supply of hydraulic fluid to a work vehicle implement

#32
20170175779
2017-06-22

Hydraulic system of work machine

#33
20170159678
2017-06-08

System having combinable transmission and implement circuits

#34
20150298730
2015-10-22

Pressurized medium assembly

#35
20150082782
2015-03-26

INDEPENDENT FLOW RATE CONTROLLING HYDRAULIC SYSTEM FOR PRESSURE CONTROL OF EXCAVATOR AND INDEPENDENT HYDRAULIC PRESSURE CONTROLLING METHOD USING THE SAME

#36
20150081179
2015-03-19

Hydraulic system having dual tilt blade control

#37
20150075157
2015-03-19

Hydropneumatic device for pressure transmission and riveting device

#38
20150027113
2015-01-29

Method for operating a hydraulic system and brake system

#39
20140245732
2014-09-04

Proportional directional control valve, and hydraulic circuit and hydropneumatic suspension system having such a valve

#40
20140083538
2014-03-27

Electrohydraulic control valve

#41
20140060654
2014-03-06

Method for actuating a hydraulic valve arrangement, and hydraulic valve arrangement

#42
20130298541
2013-11-14

Load energy assist and horsepower management system

#43
20130255244
2013-10-03

Hydraulic system for construction machine including emergency control unit for electric hydraulic pump

#44
20130220425
2013-08-29

Flow sensing based variable pump control technique in a hydraulic system with open center control valves

#45
20130098018
2013-04-25

Hydraulic system

#46
20130098014
2013-04-25

Closed-loop hydraulic system having force modulation

#47
20130098013
2013-04-25

CLOSED-LOOP SYSTEM HAVING MULTI-CIRCUIT FLOW SHARING

#48
20130098010
2013-04-25

Closed-loop hydraulic system having priority-based sharing

#49
20120152629
2012-06-21

HYDRAULIC SYSTEM HAVING LOAD LOCK VALVE

#50
20120152575
2012-06-21

Hydraulic system having dual tilt blade control

#51
20110315234
2011-12-29

Fluid control system for steerable agricultural implement

#52
20110284311
2011-11-24

Control valve assembly for electro-hydraulic steering system

#53
20110253239
2011-10-20

Active implement down force system with automatic latching of tractor power beyond pressure

#54
20110202232
2011-08-18

Hydraulic Lift System And Control Method

#55
20110120297
2011-05-26

Hydraulic Circuit

#56
20110072809
2011-03-31

Hydraulic system and method for control

#57
20110060508
2011-03-10

Method for controlling a hydraulic system

#58
20110039646
2011-02-17

Hydraulic system for actuating at least two valves

#59
20110030816
2011-02-10

CONTROL SYSTEM FOR CONTROLLING A DIRECTIONAL CONTROL VALVE

#60
20110017310
2011-01-27

FLUID VALVE ARRANGEMENT

#61
20110017308
2011-01-27

Apparatus, a control circuit and a method for producing pressure and volume flow

#62
20100300086
2010-12-02

HYDRAULIC CONTROL ARRANGEMENT AND DISTRIBUTION VALVE SECTION

#63
20100269935
2010-10-28

Valve system

#64
20100268410
2010-10-21

System, working machine comprising the system, and method of springing an implement of a working machine during transport

#65
20100242464
2010-09-30

Load sensing system, working machine comprising the system, and method for controlling a hydraulic function

#66
20100154399
2010-06-24

Method for recuperating potential energy during a lowering operation of a load

#67
20100132349
2010-06-03

Hydraulic drive, in particular for machine tools, and method for controlling the hydraulic drive

#68
20100126339
2010-05-27

ACTUATOR CONTROL DEVICE

#69
20100115938
2010-05-13

SPEED CONTROL DEVICE FOR HYDRAULIC ACTUATOR

#70
20100107623
2010-05-06

Hydraulic system having an external pressure compensator

#71
20100083651
2010-04-08

Circuit for controlling a double-action hydraulic drive cylinder

#72
20100083650
2010-04-08

Hydraulic circuit for operating a tool

#73
20100043418
2010-02-25

HYDRAULIC SYSTEM AND METHOD FOR CONTROL

#74
20100011757
2010-01-21

Safety device for hydraulic working machine

#75
20090266070
2009-10-29

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

#76
20090218161
2009-09-03

Control valve assembly for electro-hydraulic steering system

#77
20090217653
2009-09-03

Control system for recovering swing motor kinetic energy

#78
20090173067
2009-07-09

Hydraulic control valve system with isolated pressure compensation

#79
20090165457
2009-07-02

Double redundancy electro hydrostatic actuator system

#80
20090165450
2009-07-02

Hydraulic system

#81
20090145120
2009-06-11

METHOD AND CIRCUIT ARRANGEMENT OF THE SUPPLY OF PRESSUE MEDIUM TO AT LEAST TWO HYDRAULIC CONSUMERS

#82
20090142201
2009-06-04

Hydraulic flow control system and method

#83
20090133761
2009-05-28

Control valve unit with alternating stop

#84
20090094972
2009-04-16

Hydraulic control assembly

#85
20090025947
2009-01-29

Method, arrangement and valve for controlling rock drilling

#86
20090025378
2009-01-29

Hydraulic actuator control system for refuse collection vehicle

#87
20090000290
2009-01-01

Energy recovery system

#88
20080295681
2008-12-04

Hydraulic system having an external pressure compensator

#89
20080295508
2008-12-04

Force feedback poppet valve having an integrated pressure compensator

#90
20080282692
2008-11-20

Hydraulic controller arrangement

#91
20080282691
2008-11-20

Pressure-compensating directional control valve

#92
20080256940
2008-10-23

Hydraulic control device

#93
20080202110
2008-08-28

Hydraulic control arrangement

#94
20080155977
2008-07-03

Apparatus for easing impact on boom of excavator and method of controlling the same

#95
20080127642
2008-06-05

Hydraulic system with variable standby pressure

#96
20080104955
2008-05-08

Bidirectional hydraulic transformer

#97
20080066814
2008-03-20

Two-stage servo-valve

#98
20080053081
2008-03-06

Hydraulic control system

#99
20080042087
2008-02-21

Electrohydraulic valve control circuit with magnetic hysteresis compensation

#100
20080034957
2008-02-14

Hydraulic Actuator Control Circuit With Pressure Operated Counterbalancing Valves

#101
20080016861
2008-01-24

Hydraulic controller for working machine

#102
20070245889
2007-10-25

Hydraulic Control Arrangement

#103
20070209503
2007-09-13

Hydraulic system with mechanism for relieving pressure trapped in an actuator

#104
20070199440
2007-08-30

Hydraulic system for utility vehicles, in particular agricultural tractors

#105
20070169473
2007-07-26

HYDRAULIC CIRCUIT

#106
20070169471
2007-07-26

Vehicle steering mechanism

#107
20070130935
2007-06-14

Integrated valve assembly and computer controller for a distributed hydraulic control system

#108
20070101710
2007-05-10

Hydraulic system for utility vehicles, in particular agricultural tractors

#109
20070089408
2007-04-26

HYDRAULIC CONTROLLER FOR WORKING MACHINE

#110
20070074510
2007-04-05

Hydraulic system having augmented pressure compensation

#111
20070074509
2007-04-05

Hydraulic system for recovering potential energy

#112
20070059146
2007-03-15

Loading implement

#113
20070056439
2007-03-15

Robustly stable servo-controlled metering poppet valve

#114
20070056437
2007-03-15

Hydraulic control system for construction vehicle, particularly excavators

#115
20070033933
2007-02-15

Hydraulic arrangement

#116
20070022871
2007-02-01

Electro-hydraulic metering valve with integral flow control

#117
20070007039
2007-01-11

Arrangement for controlling rock drilling

#118
20060277905
2006-12-14

Hydraulic control device of industrial machinery

#119
20060266210
2006-11-30

Hydraulic system having a post-pressure compensator

#120
20060243128
2006-11-02

Hydraulic system having a pressure compensator

#121
20060202504
2006-09-14

Hydraulic drive system for vehicle roofs

#122
20060201004
2006-09-14

Device for controlling hydraulic power units

#123
20060144219
2006-07-06

Boom-holding control device for use in heavy construction equipments

#124
20060117942
2006-06-08

Hydraulic control circuit and method thereof

#125
20060090949
2006-05-04

Hydrostatic drive system

#126
20060081121
2006-04-20

Hydraulic valve arrangement

#127
20060081120
2006-04-20

Control device

#128
20060037467
2006-02-23

Servo-pneumatic actuator

#129
20050287017
2005-12-29

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

#130
20050265852
2005-12-01

Fluid pressure control device

#131
20050257519
2005-11-24

Hydraulic valve arrangement

#132
20050254933
2005-11-17

Apparatus driven by a pressurized medium

#133
20050249836
2005-11-10

Control mechanism for a rotary disk of a dual-color injection molding machine

#134
20050210871
2005-09-29

Work vehicle hydraulic system

#135
20050138924
2005-06-30

Hydraulic drive apparatus

#136
20050132876
2005-06-23

Position control device for a hydraulic actuator and interface plate for a servovalve implementing such a device

#137
20050098030
2005-05-12

Hydrostatic drive system with a safety device

#138
20050092169
2005-05-05

Control device for a hydraulic lifting arrangement

#139
20050051025
2005-03-10

Valve arrangement and hydraulic drive

#140
20050011190
2005-01-20

Hydraulic active boom suspension for a telehandler