ClassID:

146245

F15B2211/27 - CPC Classification

Classification description:

Circuits for servomotor systems; Fluid pressure source, e.g. accumulator or variable axial piston pump Directional control by means of the pressure source

Recent Application in this class:
#1
20260078778
2026-03-19

PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS

#2
20250361883
2025-11-27

HYDRAULIC SYSTEM

#3
20250027518
2025-01-23

HYDRAULIC ACTUATOR AND METHOD FOR OPERATING

#4
20250012299
2025-01-09

PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS

#5
20240401614
2024-12-05

Hydraulic Drive System Having a 2X2Q Pump Unit

#6
20240392813
2024-11-28

ACTUATOR SYSTEM FOR ARTICULATED MECHANISM

#7
20240263425
2024-08-08

A MACHINE COMPRISING A SWING-TRAVEL HYDRAULIC SYSTEM

#8
20240209878
2024-06-27

Power take-off (PTO) assembly with a disconnect clutch

#9
20240141932
2024-05-02

Hydraulic arrangement with load-holding function and hydraulic arrangement control method

#10
20230417323
2023-12-28

HYDRAULIC VALVE BLOCK AND HYDRAULIC UNIT FOR CLOSED CIRCUIT APPLICATIONS

#11
20230339605
2023-10-26

Hydraulic actuator including a multi-head piston for hydraulic gearing

#12
20230339604
2023-10-26

Hydraulic actuator including a multi-head piston for hydraulic gearing

#13
20230292670
2023-09-21

Baler connectable to a tractor for providing round bales and method for producing round bales

#14
20230220853
2023-07-13

Systems and methods for managing noise in compact high speed and high force hydraulic actuators

#15
20230046319
2023-02-16

Dual power electro-hydraulic motion control system

#16
20220347023
2022-11-03

Hydraulic system for a mobile rescue stretcher and mobile rescue stretcher

#17
20220307524
2022-09-29

Optimizing mode transitions between dual power electro-hydrostatic control systems

#18
20220213905
2022-07-07

Motor cooling via hydraulic fluid

#19
20220177084
2022-06-09

Hydraulic system for stabilizer drive

#20
20220136535
2022-05-05

Hydraulic circuit including hydraulic decompression energy reclamation

#21
20220120297
2022-04-21

Method for Operating a Hydraulic Drive

#22
20220097117
2022-03-31

Sheet metal working machine

#23
20220032356
2022-02-03

HYDRAULIC DRIVE SYSTEM FOR A PUNCHING APPARATUS

#24
20220025910
2022-01-27

SELF-CONTAINED ENERGY EFFICIENT HYDRAULIC ACTUATOR SYSTEM

#25
20220003250
2022-01-06

Electro-hydrostatic actuator system

#26
20210363731
2021-11-25

Filter for a hydraulic circuit of an agricultural system

#27
20210332831
2021-10-28

Electrohydrostatic actuator system with an expansion reservoir

#28
20210262492
2021-08-26

Double-acting hydraulic actuator with different pumps for each actuation direction

#29
20210246968
2021-08-12

Electric drive pump for well stimulation

#30
20210239137
2021-08-05

System to pump fluid and control thereof

#31
20210239136
2021-08-05

Hydraulic axis with energy storage feature

#32
20210170709
2021-06-10

Apparatus and method for cylinder changeover with a mechanically lockable force-building cylinder

#33
20210095698
2021-04-01

Actuating drive having a hydraulic outflow booster

#34
20210048043
2021-02-18

Hydraulic pressure supply device

#35
20200315513
2020-10-08

Pressure monitoring system

#36
20200277972
2020-09-03

Prime mover system and methods utilizing balanced flow within bi-directional power units

#37
20200256353
2020-08-13

Logic-controlled flow compensation circuit for operating single-rod hydrostatic actuators

#38
20200221643
2020-07-16

Baler connectable to a tractor for providing round bales and method for producing round bales

#39
20200199849
2020-06-25

Hydraulic systems for construction machinery

#40
20200180253
2020-06-11

Apparatus for controlling the switch-over of hydraulic cylinders

#41
20200132091
2020-04-30

Servohydraulic drive

#42
20200088214
2020-03-19

Systems and methods for managing noise in compact high speed and high force hydraulic actuators

#43
20200049266
2020-02-13

Pilot operated blow-off valves for hydraulic actuators

#44
20200018329
2020-01-16

Apparatus for controlling a hydraulic machine

#45
20200018328
2020-01-16

Dual power electro-hydraulic motion control system

#46
20190360583
2019-11-28

Hydraulic flushing valve arrangement

#47
20190358692
2019-11-28

Double-blank detecting apparatus for press machine and die protecting apparatus for press machine

#48
20190352884
2019-11-21

Construction machine

#49
20190285094
2019-09-19

Hydraulic drive with fast stroke and load stroke

#50
20190277311
2019-09-12

HYDRAULIC SYSTEM AND METHOD OF CONTROLLING HYDRAULIC ACTUATOR

#51
20190270129
2019-09-05

Cushion pin pressure equalizing device, die cushion device with cushion pin pressure equalizing function and cushion pin pressure equalizing method

#52
20190234431
2019-08-01

Cylinder driving device

#53
20190226959
2019-07-25

Displacement of an object with hydraulic actuators

#54
20190217945
2019-07-18

Hybrid actuator

#55
20190178242
2019-06-13

Hydraulic drive

#56
20190072178
2019-03-07

Hydrostatic valve arrangement, hydrostatic gear having the valve arrangement, and hydrostatic drive having the gear

#57
20190063472
2019-02-28

Low profile electro-hydrostatic actuator

#58
20190061918
2019-02-28

ELECTRIC HYDRAULIC ACTUATION SYSTEM FOR A SAFETY CRITICAL APPLICATION

#59
20190010964
2019-01-10

System to pump fluid and control thereof

#60
20180370775
2018-12-27

Offshore crane heave compensation control system and method using visual ranging

#61
20180312229
2018-11-01

AC servo motor hydraulic units for ship motion control

#62
20180292278
2018-10-11

Method for estimating an external force acting on an electrohydrostatic actuator

#63
20180274515
2018-09-27

Movable-blade operation system for hydraulic machine

#64
20180266447
2018-09-20

Pump-controlled hydraulic circuits for operating a differential hydraulic actuator

#65
20180223879
2018-08-09

Pressure limiting device, in particular for an assist system for vehicles

#66
20180216485
2018-08-02

Steam turbine valve drive apparatus

#67
20180215116
2018-08-02

Residual load relief system for hydraulic compactors having rotary pumps

#68
20180195537
2018-07-12

Pneumatic valve drive

#69
20180180072
2018-06-28

Safe-to-operate hydraulic drive

#70
20180142710
2018-05-24

Hydraulic drive with rapid stroke and load stroke

#71
20180119712
2018-05-03

Proportional auxiliary flow adjustment system and method

#72
20180119389
2018-05-03

Hydraulic systems for construction machinery

#73
20180087547
2018-03-29

Valve for electrohydrostatic actuator

#74
20180066785
2018-03-08

Pressure and headloss maintaining valve system for clean and dirty water systems

#75
20170350426
2017-12-07

Hydraulic actuating drive having a spring for transferring into an emergency position

#76
20170327147
2017-11-16

Steering System for a Trailing Axle of a Vehicle

#77
20170306590
2017-10-26

Hydraulic drive system of construction machine

#78
20170284388
2017-10-05

Industrial system with synthetically commutated variable displacement fluid working machine

#79
20170198730
2017-07-13

Hydraulic apparatus

#80
20170184139
2017-06-29

Method of controlling velocity of a hydraulic actuator in over-center linkage systems

#81
20170167513
2017-06-15

Electronic begin of regulation control for a hydraulic motor

#82
20170159678
2017-06-08

System having combinable transmission and implement circuits

#83
20170130747
2017-05-11

Intelligent load-sensing electro-hydrostatic actuator

#84
20170114805
2017-04-27

Prime mover system and methods utilizing balanced flow within bi-directional power units

#85
20170108014
2017-04-20

Hydraulic system

#86
20170074059
2017-03-16

Hydraulic multi-displacement hoisting cylinder system

#87
20170073931
2017-03-16

Work machine

#88
20170030053
2017-02-02

Control device for confluence flow rate of working device for construction machinery and control method therefor

#89
20170023032
2017-01-26

Loop-flushing-system for hydrostatic apparatus

#90
20170016208
2017-01-19

Work machine

#91
20170009784
2017-01-12

Hydraulic control system and method

#92
20170002845
2017-01-05

Electro hydrostatic actuators

#93
20170002844
2017-01-05

Electro hydrostatic actuators

#94
20170002842
2017-01-05

Universal orientation electro-hydraulic actuator

#95
20160377097
2016-12-29

Travel and work functions integrated into a hydraulic hybrid system

#96
20160333903
2016-11-17

Hydraulic system having regeneration and hybrid start

#97
20160333552
2016-11-17

Closed-circuit hydraulic system for construction machine

#98
20160230900
2016-08-11

Valve device

#99
20160208459
2016-07-21

Work machine driving device

#100
20160178069
2016-06-23

Valve connected to a feed circuit, a feed circuit comprising such a valve and a feeding method operating such a feed circuit

#101
20160131163
2016-05-12

Hydrostatic Drive For Variable Speed Operation of Rotational Equipment

#102
20160102686
2016-04-14

Hydraulic system for construction equipment

#103
20160102685
2016-04-14

Self-contained energy efficient hydraulic actuator system

#104
20160091004
2016-03-31

Method for controlling pressure in a hydraulic actuator

#105
20160084280
2016-03-24

Hydraulic drive with rapid stroke and load stroke

#106
20160084279
2016-03-24

Hydraulic drive with rapid stroke and load stroke

#107
20160084278
2016-03-24

Hydraulic drive with rapid stroke and load stroke

#108
20160084274
2016-03-24

System to pump fluid and control thereof

#109
20160084271
2016-03-24

Method to detect hydraulic valve failure in hydraulic system

#110
20160076558
2016-03-17

Method of increasing electro-hydrostatic actuator piston velocity

#111
20160032945
2016-02-04

Hydraulic system for construction machine

#112
20160032565
2016-02-04

Driving device for work machine

#113
20150308463
2015-10-29

Smooth control of hydraulic actuator

#114
20150292526
2015-10-15

Hydraulic driving system

#115
20150292183
2015-10-15

Hydraulic system for work machine

#116
20150275930
2015-10-01

Pump device and hydraulic actuator

#117
20150275928
2015-10-01

Pump apparatus and hydraulic actuator

#118
20150275927
2015-10-01

Electro-hydrostatic actuator deceleration rate control system

#119
20150273554
2015-10-01

Hydraulic press brake

#120
20150260204
2015-09-17

Cylinder driving apparatus

#121
20150259047
2015-09-17

Closed-loop control system for controlling a device

#122
20150226234
2015-08-13

Hydraulic actuator system

#123
20150224557
2015-08-13

Hydraulic drawing cushion of a drawing press and method of operating the hydraulic cushion

#124
20150208571
2015-07-30

Agricultural implement with electro-hydraulic cylinders

#125
20150184681
2015-07-02

Actuator

#126
20150176613
2015-06-25

Hydraulic axle

#127
20150176610
2015-06-25

Hydraulic drive system

#128
20150152887
2015-06-04

Fail-safe actuation system

#129
20150135697
2015-05-21

Driving device for work machine and work machine equipped therewith

#130
20150121860
2015-05-07

Hydraulic drive circuit

#131
20150107236
2015-04-23

Hydraulic closed circuit system

#132
20150096436
2015-04-09

AC servo motor hydraulic units for ship motion control

#133
20150096290
2015-04-09

Hydraulic system

#134
20150075150
2015-03-19

Closed hydraulic circuit

#135
20150013320
2015-01-15

Hydraulic drive system

#136
20140373710
2014-12-25

Four-chamber cylinder for a hydraulic actuating device with emergency function and hydraulic actuating device having this

#137
20140366519
2014-12-18

Hydraulic closed circuit system

#138
20140245734
2014-09-04

Hybrid excavator having a system for reducing actuator shock

#139
20140230643
2014-08-21

Actuator displacement measurement system in electronic hydraulic system of construction equipment

#140
20140130487
2014-05-15

Hydraulic drive system

#141
20140124323
2014-05-08

Hydraulic actuating device for actuation of at least one friction clutch and at least one gear setting element in a motor vehicle

#142
20140123847
2014-05-08

Hydraulic excavator

#143
20140123639
2014-05-08

Hydraulic drive system

#144
20140105714
2014-04-17

Hybrid excavator including a fast-stopping apparatus for a hybrid actuator

#145
20140026969
2014-01-30

Fail-safe actuation system

#146
20130333894
2013-12-19

Subsea actuation system

#147
20130213030
2013-08-22

Hydrostatic drive system

#148
20130125536
2013-05-23

System and method for energy recovery

#149
20130098464
2013-04-25

Closed-loop hydraulic system having regeneration configuration

#150
20130098020
2013-04-25

Meterless hydraulic system having flow sharing and combining functionality

#151
20130098019
2013-04-25

Meterless hydraulic system having flow sharing and combining functionality

#152
20130098018
2013-04-25

Hydraulic system

#153
20130098016
2013-04-25

Meterless hydraulic system having flow sharing and combining functionality

#154
20130081704
2013-04-04

Meterless hydraulic system having multi-actuator circuit

#155
20130081385
2013-04-04

Meterless hydraulic system having multi-actuator circuit

#156
20130081384
2013-04-04

Meterless hydraulic system having pump protection

#157
20130081383
2013-04-04

Closed-loop hydraulic system having energy recovery

#158
20130068885
2013-03-21

Landing gear retraction/extension device of aircraft

#159
20130048117
2013-02-28

Meterless hydraulic system having displacement control valve

#160
20130047599
2013-02-28

Meterless hydraulic system having load-holding bypass

#161
20130047592
2013-02-28

Meterless hydraulic system having restricted primary makeup

#162
20130008156
2013-01-10

Hydraulic actuating device for actuation of one or more setting elements in, in particular, a motor vehicle transmission

#163
20130000293
2013-01-03

Hydraulic systems utilizing combination open- and closed-loop pump systems

#164
20130000292
2013-01-03

Electronic high hydraulic pressure cutoff to improve system efficiency

#165
20120324880
2012-12-27

ELECTRIC-HYDRAULIC HYBRID DRIVER

#166
20120324875
2012-12-27

OPTIMIZED SYSTEM RESPONSE WITH MULTIPLE COMMANDS

#167
20120260644
2012-10-18

Engine augmentation of hydraulic control system

#168
20120260642
2012-10-18

Load holding for meterless control of actuators

#169
20120260641
2012-10-18

Overrunning pump protection for flow-controlled actuators

#170
20120240566
2012-09-27

Hydraulic controller

#171
20120220177
2012-08-30

Trim/tilt apparatus for marine vessel propulsion machine

#172
20120204776
2012-08-16

Hydraulic system for a watercraft

#173
20120198827
2012-08-09

Hydraulic drive system

#174
20120134848
2012-05-31

HYDRAULIC FAN CIRCUIT HAVING ENERGY RECOVERY

#175
20120055149
2012-03-08

SEMI-CLOSED HYDRAULIC SYSTEMS

#176
20110289912
2011-12-01

Electro-hydraulic actuator

#177
20110289911
2011-12-01

HYDRAULIC SYSTEM AND METHOD OF ACTIVELY DAMPING OSCILLATIONS DURING OPERATION THEREOF

#178
20110278068
2011-11-17

Regenerative drive mechanism for hydraulic feed cylinders in hydrostatic or hydraulic circuits

#179
20110208363
2011-08-25

Method of controlling an electro-hydraulic actuator system having multiple actuators

#180
20110100717
2011-05-05

Absorber-replenisher in a hydrostatic circuit

#181
20110088797
2011-04-21

Fluid-pressure actuator unit

#182
20110072962
2011-03-31

SELF-BLEEDING DOUBLE ACTION HYDRAULIC CYLINDER

#183
20110061375
2011-03-17

Hydraulic drive system

#184
20110047723
2011-03-03

CLOSED-LOOP CONTROL SYSTEM FOR CONTROLLING A DEVICE

#185
20110023477
2011-02-03

Hydrostatic circuit lock valve components, circuits, systems, and method

#186
20110017308
2011-01-27

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

#187
20110011257
2011-01-20

ELECTRO-HYDRAULIC ACTUATOR HAVING END CAP WITH SPLIT BUSHING

#188
20100308179
2010-12-09

Electric power actuator and control method for such an actuator

#189
20100300279
2010-12-02

Point Of Use Actuator

#190
20100193714
2010-08-05

HYDRAULIC ACTUATOR

#191
20100162885
2010-07-01

System and method for enabling floating of earthmoving implements

#192
20100162593
2010-07-01

Displacement-controlled hydraulic system for multi-function machines

#193
20100116929
2010-05-13

Hybrid electromechanical/hydromechanical actuator and actuation control system

#194
20100115936
2010-05-13

System and method for pump-controlled cylinder cushioning

#195
20100101120
2010-04-29

Fluid pressure drive unit and snow removal unit

#196
20090308069
2009-12-17

Pump unit and working vehicle

#197
20090297370
2009-12-03

Combined power pack unit

#198
20090287373
2009-11-19

Control system for a work machine and method for controlling a hydraulic cylinder

#199
20090266934
2009-10-29

Hydraulic fluid supply device and electric actuator

#200
20090193801
2009-08-06

Hydraulic drive system

#201
20090101216
2009-04-23

Scavenging Valve for a Hydraulic Circuit

#202
20090071218
2009-03-19

Die cushion apparatus of press machine

#203
20090001300
2009-01-01

Directional control valve device and fluid pressure cylinder device

#204
20080302099
2008-12-11

Method for controlling a hydraulic cylinder and control system for a work machine

#205
20080295505
2008-12-04

Method for springing a movement of an implement of a work machine

#206
20080295504
2008-12-04

Method for controlling a hydraulic cylinder in a work machine

#207
20080294316
2008-11-27

Method for controlling a hydraulic cylinder in a work machine and control system for a work machine

#208
20080292474
2008-11-27

Method for controlling a hydraulic machine in a control system

#209
20080223029
2008-09-18

Oil cooling circuit for continuously reciprocating hydraulic cylinders

#210
20080072589
2008-03-27

Hydraulic drive

#211
20070272469
2007-11-29

Pump Unit and Working Vehicle

#212
20070199315
2007-08-30

Apparatus and methods for actuation

#213
20070166168
2007-07-19

CONTROL SYSTEM FOR A WORK MACHINE AND METHOD FOR CONTROLLING A HYDRAULIC CYLINDER IN A WORK MACHINE

#214
20060207247
2006-09-21

Actuator

#215
20060156713
2006-07-20

Hydraulic drive system

#216
20050236214
2005-10-27

Pump unit and working vehicle

#217
20050178117
2005-08-18

Charge/auxiliary circuit for reducing power losses in hydrostatic systems

#218
20050001606
2005-01-06

Hybrid construction machine having auxiliary battery and control apparatus thereof