ClassID:

146349

F15B2211/46 - CPC Classification

Classification description:

Circuits for servomotor systems; Flow control Control of flow in the return line, i.e. meter-out control

Recent Application in this class:
#1
20250207683
2025-06-26

Valve

#2
20250180043
2025-06-05

FLUID PRESSURE CIRCUIT

#3
20250163941
2025-05-22

Valve

#4
20250116280
2025-04-10

HYDRAULIC DRIVE SYSTEM

#5
20240426386
2024-12-26

ELEVATABLE CHAMBER AND METHOD OF OPERATING THE SAME

#6
20240287763
2024-08-29

Work Machine

#7
20240271526
2024-08-15

PNEUMATIC DEVICE WITH A MOVABLY MOUNTED PISTON

#8
20230235755
2023-07-27

HYDRAULIC DRIVE SYSTEM

#9
20230213031
2023-07-06

Hydraulic control system for linear actuation

#10
20230167622
2023-06-01

Work Machine

#11
20230022248
2023-01-26

Work machine control system, work machine, and work machine control method

#12
20220333622
2022-10-20

Air cylinder, head cover, and rod cover

#13
20220090611
2022-03-24

Hydraulic system for working machine

#14
20220049720
2022-02-17

Flow controller and driving apparatus including the same

#15
20210262464
2021-08-26

Positive displacement pump including an unloading device

#16
20210254637
2021-08-19

Hydraulic valve arrangement

#17
20210239137
2021-08-05

System to pump fluid and control thereof

#18
20210207620
2021-07-08

Valve system for pneumatic cylinders

#19
20210131456
2021-05-06

Oil returning valve set with multi-stage throttling control

#20
20210071392
2021-03-11

Construction machine

#21
20200378409
2020-12-03

VALVE DEVICE

#22
20200325914
2020-10-15

Hydraulic systems and methods for nested pressure regulating valves

#23
20200291970
2020-09-17

Method to automatically detect parameter for pressure dynamics control

#24
20200196513
2020-06-25

Closed-loop proportional position control of an implement stabilizer wheel

#25
20200095820
2020-03-26

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

#26
20200063761
2020-02-27

Hydraulic drive device for cargo vehicle

#27
20200056634
2020-02-20

Valve system for pneumatic cylinders

#28
20200049173
2020-02-13

Valve System For Flushing Contaminated Hydraulic Fluid

#29
20200049172
2020-02-13

Control system for flushing contaminated hydraulic fluid

#30
20200029485
2020-01-30

Implement control system having a manual override

#31
20200022300
2020-01-23

System for controlling the operation of an actuator mounted on a seed planting implement

#32
20200011030
2020-01-09

Hydraulic work machine

#33
20190352884
2019-11-21

Construction machine

#34
20190316605
2019-10-17

Actuator arrangement

#35
20190301136
2019-10-03

Hydraulic system for working machine

#36
20190285068
2019-09-19

Positive displacement pump including an unloading device

#37
20190249693
2019-08-15

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

#38
20190234431
2019-08-01

Cylinder driving device

#39
20190186105
2019-06-20

Work machine

#40
20190106301
2019-04-11

Crane

#41
20190010965
2019-01-10

Hydraulic apparatus comprising synthetically commutated machine, and operating method

#42
20190010964
2019-01-10

System to pump fluid and control thereof

#43
20180328386
2018-11-15

Method and device for controlling a hydraulically actuated drive unit of a valve

#44
20180291935
2018-10-11

HYDRAULIC DRIVE SYSTEM OF CONSTRUCTION MACHINE

#45
20180274208
2018-09-27

Construction machine

#46
20180180189
2018-06-28

Valve system for pneumatic cylinders

#47
20180128607
2018-05-10

Method to automatically detect the area ratio of an actuator

#48
20180128292
2018-05-10

Control strategy for hydraulic actuator with a pair of independent metering valves

#49
20180128290
2018-05-10

Method to automatically detect parameter for pressure dynamics control

#50
20180017087
2018-01-18

Hydraulic actuator control circuit

#51
20170363122
2017-12-21

Apparatus for recuperating hydraulic energy with energy-efficient replenishment of the rod sides of differential cylinders and simultaneous pressure intensification

#52
20170363112
2017-12-21

Device for recovering hydraulic energy by connecting two differential cylinders

#53
20170350524
2017-12-07

Control valve device

#54
20170314553
2017-11-02

Positive displacement pump including an unloading device

#55
20170298590
2017-10-19

Hydraulic drive system for work machine

#56
20170276155
2017-09-28

Hydraulic drive system for work machine

#57
20170275852
2017-09-28

Hydraulic control system for construction machine

#58
20170253468
2017-09-07

Hydraulic control circuit for crane slewing gear

#59
20170234333
2017-08-17

Actuator controller and method for regulating the movement of an actuator

#60
20170211597
2017-07-27

Hydraulic system and method for controlling an implement of a working machine

#61
20170184136
2017-06-29

Hydraulic drive system for operation table

#62
20170107694
2017-04-20

Hydraulic excavator drive system

#63
20170023349
2017-01-26

Online sensor calibration for electrohydraulic valves

#64
20160333899
2016-11-17

Fluid pressure system

#65
20160252106
2016-09-01

Hydraulic drive and method for discreetly changing the positional output of said drive

#66
20160230787
2016-08-11

IMPLEMENT CARRIER WITH IMPROVED CONTROL OF HYDRAULIC FLUID SUPPLY

#67
20160208829
2016-07-21

Fluid flow regulator

#68
20160084274
2016-03-24

System to pump fluid and control thereof

#69
20150369262
2015-12-24

Fluid pressure control device

#70
20150330413
2015-11-19

Hydraulic circuit for construction machine

#71
20150308625
2015-10-29

Hydraulic control arrangement for a plurality of actuators

#72
20150300380
2015-10-22

Lifting device

#73
20150292526
2015-10-15

Hydraulic driving system

#74
20150275939
2015-10-01

Hydraulic circuit for construction machine

#75
20150152900
2015-06-04

Control system for construction machine

#76
20150096291
2015-04-09

Fluid pressure control device

#77
20150040548
2015-02-12

Hydraulic system having low speed operation

#78
20140130488
2014-05-15

Hydraulic drive apparatus for work machine

#79
20140130486
2014-05-15

Hydraulic drive apparatus for work machine

#80
20130298541
2013-11-14

Load energy assist and horsepower management system

#81
20130152575
2013-06-20

Hydraulic driving apparatus for working machine

#82
20120285159
2012-11-15

Hydraulic driving apparatus for working machine

#83
20120285152
2012-11-15

Hydraulic driving apparatus for working machine

#84
20120205563
2012-08-16

VALVE ARRANGEMENT FOR ACTUATING A LOAD

#85
20120199765
2012-08-09

Valve assembly

#86
20120073431
2012-03-29

Digital Hydraulic Controller

#87
20110197576
2011-08-18

Hydraulic control system in working machine

#88
20110162744
2011-07-07

Device for piloting by means of a substantially incompressible fluid

#89
20110094595
2011-04-28

Method of operating a control valve assembly for a hydraulic system

#90
20110083762
2011-04-14

Hydraulic system having a backpressure control valve

#91
20100319337
2010-12-23

HYDROSTATIC DRIVE SYSTEM

#92
20100313555
2010-12-16

Hydraulic control circuit for overcontrol of a slewing gear drive

#93
20100276171
2010-11-04

Pneumatic drive system

#94
20100176324
2010-07-15

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

#95
20100132349
2010-06-03

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

#96
20100006165
2010-01-14

HYDRAULICALLY ACTUATED PNEUMATIC REGULATOR

#97
20090203480
2009-08-13

DEVICE FOR CONTROLLING A FLUID-ACTIVATED DOUBLE-ACTION OPERATING CYLINDER

#98
20090173923
2009-07-09

Lifting system

#99
20090158725
2009-06-25

Hydraulic pump with control system

#100
20090078110
2009-03-26

Pneumatic drive system

#101
20090056326
2009-03-05

Operating device

#102
20090050222
2009-02-26

Three-way poppet valve with intermediate pilot port

#103
20080271596
2008-11-06

Actuator using fluid cylinder and method of controlling the same

#104
20080237514
2008-10-02

Flow Control Valve and Cylinder Apparatus Having the Same

#105
20080041467
2008-02-21

Digital control valve assembly for a hydraulic actuator

#106
20080016862
2008-01-24

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

#107
20070169474
2007-07-26

Hydraulic control device for working machine

#108
20070144340
2007-06-28

Adjustable Differential Flow Shuttle Valve Control System

#109
20070119163
2007-05-31

Travel control device for hydraulically driven vehicle and hydraulically driven vehicle

#110
20070074509
2007-04-05

Hydraulic system for recovering potential energy

#111
20070040140
2007-02-22

High pressure intensifying piston valve

#112
20070039458
2007-02-22

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

#113
20070020354
2007-01-25

Injection unit comprising a spindle drive and hydraulic support

#114
20070017364
2007-01-25

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

#115
20060289239
2006-12-28

Hydraulic double ram lifting platform

#116
20060283184
2006-12-21

Pressure compensating flow control hydraulic circuit having holding valve

#117
20060273270
2006-12-07

Valve

#118
20060266210
2006-11-30

Hydraulic system having a post-pressure compensator

#119
20060230752
2006-10-19

Hydraulic drive control device

#120
20060179831
2006-08-17

Semi-active ride control for a mobile machine

#121
20060156914
2006-07-20

Hydraulic control

#122
20060130477
2006-06-22

High pressure device and method for clean room applications

#123
20060037470
2006-02-23

Fluid circuit and industrial truck having a fluid circuit

#124
20050276709
2005-12-15

Hydraulic actuating device

#125
20050252326
2005-11-17

Device for driving a plurality of hydraulic shift cylinders and hydraulic supply system for a twin-clutch transmission

#126
20050247188
2005-11-10

Hydraulic control valve having holding valve with improved response characteristics

#127
20050242310
2005-11-03

Control valve apparatus and pressure circuit

#128
20050217074
2005-10-06

Control system for pneumatically-powered door installation

#129
20050199295
2005-09-15

Electrohydraulic control device

#130
20050194225
2005-09-08

Air cylinder with high frequency shock absorber and accelerator

#131
20050146252
2005-07-07

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

#132
20050132876
2005-06-23

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

#133
20050127312
2005-06-16

Actuator for driving a valve

#134
20050072474
2005-04-07

Valve assembly for attenuating bounce of hydraulically driven members of a machine

#135
20050051026
2005-03-10

Valve arrangement and hydraulic drive

#136
20050051024
2005-03-10

Valve arrangement and hydraulic drive

#137
20050044849
2005-03-03

Hydraulic control arrangement for a mobile work machine

#138
20050031460
2005-02-10

Drive mechanism