ClassID:

146313

F15B2211/40515 - CPC Classification

Classification description:

Circuits for servomotor systems; Flow control characterised by the type of flow control means or valve with variable throttles or orifices

Recent Application in this class:
#1
20260022713
2026-01-22

HYDRAULIC DRIVE APPARATUS

#2
20250180043
2025-06-05

FLUID PRESSURE CIRCUIT

#3
20250122893
2025-04-17

Two-stage speed controller

#4
20240369078
2024-11-07

PUMP CONTROL SHOCK ABSORBER

#5
20240360849
2024-10-31

Hydraulic system for rotary implement

#6
20240301661
2024-09-12

Work Machine

#7
20240287763
2024-08-29

Work Machine

#8
20240271526
2024-08-15

PNEUMATIC DEVICE WITH A MOVABLY MOUNTED PISTON

#9
20240209874
2024-06-27

OIL DRAIN VALVE, ENERGY ACCUMULATION DEVICE, HYDRAULIC SYSTEM AND WORKING MACHINE

#10
20240191727
2024-06-13

Flow self-compensating load sensing pump/valve coordinated electro-hydraulic system and control method

#11
20240159255
2024-05-16

Fluid circuit

#12
20240117822
2024-04-11

FLUID CIRCUIT FOR INTERMITTENT AIR DISCHARGE

#13
20240051806
2024-02-15

Hydraulic system for an industrial truck

#14
20240026905
2024-01-25

Discretized valve state control for multi-level hydraulic systems

#15
20230193931
2023-06-22

Hydraulic machine

#16
20230174353
2023-06-08

Lifting mechanism

#17
20230099778
2023-03-30

Control device and hydraulic system including the same

#18
20220349426
2022-11-03

Air cylinder, head cover, and rod cover

#19
20220333622
2022-10-20

Air cylinder, head cover, and rod cover

#20
20220333619
2022-10-20

Flow rate controller and drive device

#21
20220333349
2022-10-20

Hydraulic unit

#22
20220316501
2022-10-06

Flow rate controller and drive device equipped with same

#23
20220268298
2022-08-25

Fluid circuit for air cylinder

#24
20220056931
2022-02-24

Agricultural implements and hydraulic circuits therefor incorporating one or more priority valves

#25
20220049720
2022-02-17

Flow controller and driving apparatus including the same

#26
20210404486
2021-12-30

Flow rate controller and drive device comprising same

#27
20210381654
2021-12-09

GAS NETWORK AND METHOD FOR THE SIMULTANEOUS DETECTION OF LEAKS AND OBSTRUCTIONS IN A GAS NETWORK UNDER PRESSURE OR VACUUM

#28
20210317829
2021-10-14

System to pump fluid and control thereof

#29
20210239137
2021-08-05

System to pump fluid and control thereof

#30
20210180619
2021-06-17

Discretized valve state control for multi-level hydraulic systems

#31
20210128325
2021-05-06

Linear actuator for asymmetric power generation and dissipation

#32
20210108657
2021-04-15

FLUID CIRCUIT FOR AIR CYLINDERS

#33
20210102558
2021-04-08

Pressure booster and cylinder apparatus provided with same

#34
20200378408
2020-12-03

Hydraulic damper with valve block

#35
20200355203
2020-11-12

AIR CYLINDER FLUID CIRCUIT AND METHOD FOR DESIGNING SAME

#36
20200318755
2020-10-08

VEHICLE MOUNTABLE ARM FOR VALVE OPERATING MACHINE

#37
20200232577
2020-07-23

PRESSURE REGULATING STARTER VALVE

#38
20200200193
2020-06-25

FLUID PRESSURE CONTROL DEVICE

#39
20200096012
2020-03-26

VALVE

#40
20200095820
2020-03-26

Pneumatic pressure control device and pneumatic pressure control method for automatic door

#41
20200063761
2020-02-27

Hydraulic drive device for cargo vehicle

#42
20190336309
2019-11-07

Linear actuator for asymmetric power generation and dissipation

#43
20190285097
2019-09-19

Electropneumatic control system and position controller for such a system

#44
20190277310
2019-09-12

Driving method and driving device of fluid pressure cylinder

#45
20190249693
2019-08-15

Discharge pressure scale and lifting-lowering device having a discharge pressure scale of this type

#46
20190226503
2019-07-25

Discretized valve state control for multi-level hydraulic systems

#47
20190210704
2019-07-11

Unmanned underwater vehicle and method for controlling hydraulic system

#48
20190093677
2019-03-28

Vehicle hydraulic system

#49
20190078702
2019-03-14

Vehicle mountable arm for valve operating machine

#50
20190063466
2019-02-28

Fluid control valve

#51
20190063039
2019-02-28

Hydraulic energy regeneration system for work machine

#52
20190032681
2019-01-31

Hydraulic apparatus, in particular hydraulic valve or hydraulic regulator

#53
20190024507
2019-01-24

Hydraulically operated splitting device

#54
20190010964
2019-01-10

System to pump fluid and control thereof

#55
20180372126
2018-12-27

Hydraulic valve device with multiple working sections with pump control system with by-pass line

#56
20180363682
2018-12-20

FLUID POWER CONTROL SYSTEM FOR MOBILE LOAD HANDLING EQUIPMENT

#57
20180305899
2018-10-25

Control system and work machine

#58
20180245312
2018-08-30

Work machine hydraulic drive device

#59
20180238027
2018-08-23

Hydraulic pump control system of hydraulic working machine

#60
20180216639
2018-08-02

Accumulator with secondary gas chamber

#61
20180172005
2018-06-21

Electronically-controlled compressed air system

#62
20180051720
2018-02-22

Hydraulic fluid energy regeneration apparatus of work machine

#63
20180051444
2018-02-22

Hydraulic control system of construction machine

#64
20170370382
2017-12-28

Hydraulic drive system

#65
20170343020
2017-11-30

Intermittent air discharge apparatus

#66
20170276155
2017-09-28

Hydraulic drive system for work machine

#67
20170275852
2017-09-28

Hydraulic control system for construction machine

#68
20170261123
2017-09-14

Systems and methods for electrohydraulic valve calibration

#69
20170261008
2017-09-14

Speed controller

#70
20170241447
2017-08-24

SYSTEM AND METHOD FOR HYDRAULIC FLOW CONTROL

#71
20170191505
2017-07-06

Discretized valve state control for multi-level hydraulic systems

#72
20170183842
2017-06-29

Hydraulic control system for construction machine

#73
20170175779
2017-06-22

Hydraulic system of work machine

#74
20170167083
2017-06-15

Vertical ride quality system for a rail vehicle

#75
20170107697
2017-04-20

Shovel and method of controlling shovel

#76
20170074293
2017-03-16

Metered fluid source connection to downstream functions in PCLS systems

#77
20170009753
2017-01-12

Radial piston pump assemblies and use thereof in hydraulic circuits

#78
20160376768
2016-12-29

Valve subassembly having at least two pump lines for a pump

#79
20160333901
2016-11-17

FAIL FIXED ACTUATOR

#80
20160333899
2016-11-17

Fluid pressure system

#81
20160312443
2016-10-27

CONTROL SYSTEM OF HYBRID CONSTRUCTION MACHINE

#82
20160208829
2016-07-21

Fluid flow regulator

#83
20160201823
2016-07-14

Vehicle mountable arm for valve operating machine

#84
20160160883
2016-06-09

Hydraulic circuit for construction machine

#85
20160138620
2016-05-19

Load sensing control circuit

#86
20160084274
2016-03-24

System to pump fluid and control thereof

#87
20160076558
2016-03-17

Method of increasing electro-hydrostatic actuator piston velocity

#88
20160002888
2016-01-07

Variable load sense open center hybrid system

#89
20150377264
2015-12-31

Hydraulic system for construction machinery

#90
20150330415
2015-11-19

Hydraulic drive system for construction machine

#91
20150323096
2015-11-12

Vehicle mountable arm for valve operating machine

#92
20150308625
2015-10-29

Hydraulic control arrangement for a plurality of actuators

#93
20150292526
2015-10-15

Hydraulic driving system

#94
20150275938
2015-10-01

Control system for hybrid construction machine

#95
20150252819
2015-09-10

Work machine

#96
20150252554
2015-09-10

Hydraulic drive system for construction machine

#97
20150218780
2015-08-06

Construction machine

#98
20150152900
2015-06-04

Control system for construction machine

#99
20150132426
2015-05-14

Hydraulic drive circuit with parallel architectured accumulator

#100
20150128583
2015-05-14

Travel control valve

#101
20150096291
2015-04-09

Fluid pressure control device

#102
20150082784
2015-03-26

Flushing circuit for hydraulic cylinder drive circuit

#103
20150068200
2015-03-12

Hydraulic circuit for construction machine and control device for same

#104
20150040548
2015-02-12

Hydraulic system having low speed operation

#105
20150033727
2015-02-05

Hybrid construction machine

#106
20150013323
2015-01-15

Circuit pressure control device, hydraulic control circuit using circuit pressure control unit, and hydraulic control circuit of construction machine

#107
20140331662
2014-11-13

Hydraulic control device for forklift

#108
20140264106
2014-09-18

Flow rate control device

#109
20140260222
2014-09-18

Hydraulic regeneration system and method for a material handling vehicle

#110
20140116038
2014-05-01

Hydraulic system with open loop electrohydraulic pressure compensation

#111
20140060017
2014-03-06

Multi-orifice bypass for a hydraulic motor assembly

#112
20140033690
2014-02-06

MACHINE HYDRAULIC SYSTEM HAVING FINE CONTROL MODE

#113
20140010688
2014-01-09

Hydraulic circuit for controlling booms of construction equipment

#114
20130318959
2013-12-05

Hydraulic Circuits with Energy Conservation Features for Overrunning Load Conditions

#115
20130299266
2013-11-14

Hydraulic Ride Control System with Manual Mode Safeguard

#116
20130298541
2013-11-14

Load energy assist and horsepower management system

#117
20130277584
2013-10-24

Fluid power control system for mobile load handling equipment

#118
20130219877
2013-08-29

System and method for calibrating hydraulic valves

#119
20130160443
2013-06-27

Hydraulic system with fluid flow summation control of a variable displacement pump and priority allocation of fluid flow

#120
20130152776
2013-06-20

Pneumatic drive

#121
20130126023
2013-05-23

HYDRAULIC SYSTEM WITH ENERGY REGENERATION

#122
20130056103
2013-03-07

Valve array

#123
20120326068
2012-12-27

Vehicle mountable arm for valve operating machine

#124
20120299310
2012-11-29

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

#125
20120279209
2012-11-08

Systems and methods for energy storage and recovery using compressed gas

#126
20120199765
2012-08-09

Valve assembly

#127
20120144817
2012-06-14

Operating oil temperature controller for hydraulic drive device

#128
20120133200
2012-05-31

Brake system and method

#129
20120093968
2012-04-19

HYDRAULIC DRIVE CIRCUIT WITH PARALLEL ARCHITECTURED ACCUMULATOR

#130
20120085601
2012-04-12

Shut-off valve for hydraulic system

#131
20120085440
2012-04-12

Flow summation system for controlling a variable displacement hydraulic pump

#132
20120006013
2012-01-12

High-efficiency energy-conversion based on fluid expansion and compression

#133
20120000557
2012-01-05

Systems and methods for reducing dead volume in compressed-gas energy storage systems

#134
20110314803
2011-12-29

Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange

#135
20110302913
2011-12-15

Hydrostatic System Having A Hydropneumatic Accumulator

#136
20110297860
2011-12-08

Vehicle mountable arm for valve operating machine

#137
20110296823
2011-12-08

Systems and methods for energy storage and recovery using gas expansion and compression

#138
20110289912
2011-12-01

Electro-hydraulic actuator

#139
20110277843
2011-11-17

Soft start device for pneumatic systems and method for the operation of a soft start device

#140
20110219760
2011-09-15

Systems and methods for energy storage and recovery using compressed gas

#141
20110192155
2011-08-11

Hydraulic drive device for hydraulic excavator

#142
20110167813
2011-07-14

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

#143
20110132012
2011-06-09

FLOW CONTROL

#144
20110083762
2011-04-14

Hydraulic system having a backpressure control valve

#145
20110082610
2011-04-07

Controller of hybrid construction machine

#146
20110072810
2011-03-31

Controller of hybrid construction machine

#147
20110071738
2011-03-24

Hybrid construction machine

#148
20110056193
2011-03-10

Systems and methods for energy storage and recovery using compressed gas

#149
20110014062
2011-01-20

Control device of hydraulically driven fan

#150
20100319337
2010-12-23

HYDROSTATIC DRIVE SYSTEM

#151
20100313555
2010-12-16

Hydraulic control circuit for overcontrol of a slewing gear drive

#152
20100310386
2010-12-09

Hydraulic damping assembly and regulating system

#153
20100276171
2010-11-04

Pneumatic drive system

#154
20100176324
2010-07-15

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

#155
20100175948
2010-07-15

HYDRAULIC ACTUATING CIRCUIT FOR POWER-ASSISTED STEERING, AND MOTOR VEHICLE EQUIPPED THEREWITH

#156
20100139277
2010-06-10

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

#157
20100132349
2010-06-03

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

#158
20100097040
2010-04-22

Electronic control for a hydraulically driven auxiliary power source

#159
20100097038
2010-04-22

Electronic control for a hydraulically driven generator

#160
20100089063
2010-04-15

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

#161
20100059130
2010-03-11

Directional control valve device and directional control valve device block having directional control valve devices

#162
20100031435
2010-02-11

BYPASS SYSTEM TO CONTROL LIQUID VOLUME

#163
20100006165
2010-01-14

HYDRAULICALLY ACTUATED PNEUMATIC REGULATOR

#164
20090308069
2009-12-17

Pump unit and working vehicle

#165
20090282822
2009-11-19

Systems and methods for energy storage and recovery using compressed gas

#166
20090267010
2009-10-29

Vehicle mountable arm for valve operating machine

#167
20090159143
2009-06-25

Fluid pressure circuit

#168
20090158725
2009-06-25

Hydraulic pump with control system

#169
20090134848
2009-05-28

Electronic control for a hydraulically driven generator

#170
20090113887
2009-05-07

Hydraulic Drive Device

#171
20090094971
2009-04-16

SYSTEM AND APPARATUS TO SYNCHRONIZE A PLURALITY OF HYDRAULICALLY ACTUATED COMPONENTS

#172
20090084277
2009-04-02

PRESSURIZING DEVICE

#173
20090078110
2009-03-26

Pneumatic drive system

#174
20090056326
2009-03-05

Operating device

#175
20090053077
2009-02-26

Flow prioritizing valve system

#176
20090050222
2009-02-26

Three-way poppet valve with intermediate pilot port

#177
20090028732
2009-01-29

PRESSURIZING DEVICE

#178
20090001300
2009-01-01

Directional control valve device and fluid pressure cylinder device

#179
20080302098
2008-12-11

Hydraulic control apparatus

#180
20080276798
2008-11-13

Asymmetric volume booster arrangement for valve actuators

#181
20080271793
2008-11-06

Load-Pressure-Operated Flow Rate Regulator with Vibration Damping

#182
20080271596
2008-11-06

Actuator using fluid cylinder and method of controlling the same

#183
20080245064
2008-10-09

Anti-saturation valve assembly for load sensing hydraulic system

#184
20080237514
2008-10-02

Flow Control Valve and Cylinder Apparatus Having the Same

#185
20080229738
2008-09-25

Hydraulic circuit to prevent bucket separation from bucket rest during traveling of heavy equipment

#186
20080223205
2008-09-18

Hydraulic drive apparatus

#187
20080173014
2008-07-24

Hydraulic control device of construction machine

#188
20080155975
2008-07-03

Hydraulic system with energy recovery

#189
20080152513
2008-06-26

HYDRAULIC CIRCUIT ARRANGEMENT WITH RECOVERY OF ENERGY

#190
20080128036
2008-06-05

Softstart valve means

#191
20080066814
2008-03-20

Two-stage servo-valve

#192
20080047263
2008-02-28

Hydraulic circuit having a multifunction selector

#193
20080041467
2008-02-21

Digital control valve assembly for a hydraulic actuator

#194
20080034746
2008-02-14

Combiner valve control system and method

#195
20080016862
2008-01-24

Hydraulic Switching Arrangement, Particularly for the Drive of Concrete Spreader Masts

#196
20080010982
2008-01-17

Control Valve for a Servo Steering System

#197
20070289298
2007-12-20

Suspension arrangement for a boom assembly mounted on an agricultural sprayer

#198
20070272469
2007-11-29

Pump Unit and Working Vehicle

#199
20070235078
2007-10-11

Hydraulic supply systems

#200
20070227133
2007-10-04

Cylinder with internal pushrod

#201
20070217898
2007-09-20

Access method and apparatus that limit motion according to load and position

#202
20070204607
2007-09-06

Hydraulic circuit of construction machine

#203
20070169474
2007-07-26

Hydraulic control device for working machine

#204
20070137192
2007-06-21

Circuit arrangement

#205
20070125078
2007-06-07

Hydraulic pressure control device of construction machine

#206
20070120662
2007-05-31

Digital Hydraulic system

#207
20070102223
2007-05-10

Hydraulic power unit

#208
20070084357
2007-04-19

Drive mechanism

#209
20070084201
2007-04-19

Device and method for controlling the position of a pneumatic actuator

#210
20070074509
2007-04-05

Hydraulic system for recovering potential energy

#211
20070062183
2007-03-22

Pump device

#212
20070044464
2007-03-01

Combiner valve control system and method

#213
20070044463
2007-03-01

Hydraulic system having area controlled bypass

#214
20070040140
2007-02-22

High pressure intensifying piston valve

#215
20070039458
2007-02-22

Actuator using fluid cylinder, method of controlling the actuator, and choke valve devices

#216
20070020354
2007-01-25

Injection unit comprising a spindle drive and hydraulic support

#217
20070017364
2007-01-25

Hydraulic control unit for the arms of a grip and grip including said hydraulic unit

#218
20070016349
2007-01-18

Hydraulic control apparatus for hydraulic excavator

#219
20070007039
2007-01-11

Arrangement for controlling rock drilling

#220
20070006580
2007-01-11

Control system and method for supplying pressure means to at least two hydraulic consumers

#221
20060288862
2006-12-28

Hydraulic circuit for option device of heavy construction equipment

#222
20060283184
2006-12-21

Pressure compensating flow control hydraulic circuit having holding valve

#223
20060273270
2006-12-07

Valve

#224
20060266210
2006-11-30

Hydraulic system having a post-pressure compensator

#225
20060254964
2006-11-16

Method and apparatus for angularly positioning a shaker separator bed

#226
20060230753
2006-10-19

Control arrangement and method for controlling at least two hydraulic consumers

#227
20060230752
2006-10-19

Hydraulic drive control device

#228
20060218910
2006-10-05

Hydraulic system for an air cart

#229
20060188329
2006-08-24

Method and apparatus for lifting a load

#230
20060179831
2006-08-17

Semi-active ride control for a mobile machine

#231
20060179691
2006-08-17

Hydraulic control device of an excavator with improved loading performance on a slope

#232
20060156916
2006-07-20

Electronic control for a hydraulically driven generator

#233
20060156914
2006-07-20

Hydraulic control

#234
20060150621
2006-07-13

Method and apparatus for warm up control of autonomous inverter-driven hydraulic unit

#235
20060130554
2006-06-22

Device for applying a working power to a workpiece

#236
20060130477
2006-06-22

High pressure device and method for clean room applications

#237
20060102241
2006-05-18

Suspension device

#238
20060090637
2006-05-04

Die drive unit of molding machine

#239
20060090459
2006-05-04

Hydraulic system having priority based flow control

#240
20060054443
2006-03-16

Hydraulic system, in particular for motor vehicles

#241
20060042240
2006-03-02

System and method for controlling hydraulic fluid flow

#242
20060037470
2006-02-23

Fluid circuit and industrial truck having a fluid circuit

#243
20060027092
2006-02-09

Hydraulic system with an actuator having independent meter-in meter-out control

#244
20060011360
2006-01-19

Monitoring valve, rock drilling apparatus and a method for controlling at least two hydraulic actuators to such a monitoring valve and rock drilling apparatus

#245
20050284143
2005-12-29

Fluid circuit for feeding primary and auxiliary users with preset priorities

#246
20050276709
2005-12-15

Hydraulic actuating device

#247
20050247188
2005-11-10

Hydraulic control valve having holding valve with improved response characteristics

#248
20050242310
2005-11-03

Control valve apparatus and pressure circuit

#249
20050236214
2005-10-27

Pump unit and working vehicle

#250
20050229775
2005-10-20

Asymmetric volume booster arrangement for valve actuator

#251
20050217074
2005-10-06

Control system for pneumatically-powered door installation

#252
20050204736
2005-09-22

Hydraulic control device for working machine

#253
20050199120
2005-09-15

Hydraulic arrangement

#254
20050194225
2005-09-08

Air cylinder with high frequency shock absorber and accelerator

#255
20050194043
2005-09-08

Flow control apparatus

#256
20050175485
2005-08-11

Hydraulic driving system of construction machinery

#257
20050160726
2005-07-28

Hydraulic system for a vehicle, a vehicle including such a hydraulic system and a suplementary unit for such a vehicle

#258
20050146252
2005-07-07

Cylinder apparatus with a capability of detecting piston position in a cylinder

#259
20050144941
2005-07-07

Hydraulic circuit of excavating and slewing working vehicle

#260
20050144939
2005-07-07

Hydraulic actuating device for a convertible top assembly of a vehicle

#261
20050144938
2005-07-07

Hydraulic drive unit

#262
20050138924
2005-06-30

Hydraulic drive apparatus

#263
20050127312
2005-06-16

Actuator for driving a valve

#264
20050118036
2005-06-02

Regulatory device comprising a threshold valve control valve

#265
20050103007
2005-05-19

Power system and work machine using same

#266
20050098401
2005-05-12

Enhanced computer optimized adaptive suspension system and method

#267
20050066655
2005-03-31

Cylinder with internal pushrod

#268
20050051026
2005-03-10

Valve arrangement and hydraulic drive

#269
20050051024
2005-03-10

Valve arrangement and hydraulic drive

#270
20050044851
2005-03-03

Monoprolellant/hypergolic powered proportional actuator

#271
20050044849
2005-03-03

Hydraulic control arrangement for a mobile work machine

#272
20050035320
2005-02-17

Electromagnetic proportional flow rate control valve

#273
20050031460
2005-02-10

Drive mechanism

#274
20050011190
2005-01-20

Hydraulic active boom suspension for a telehandler

#275
18988992
2026-01-20

Energy recovery system and control strategy for hydraulic excavator boom