ClassID:

146166

F15B21/08 - CPC Classification

Classification description:

Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass Servomotor systems incorporating electrically operated control means

Sub-classes:
Recent Application in this class:
#1
20260078783
2026-03-19

POSITION CONTROLLER

#2
20250369458
2025-12-04

Volume Follow Supply

#3
20250366414
2025-12-04

POWER CONTROL SYSTEM

#4
20250354571
2025-11-20

HYDRAULICALLY AMPLIFIED SELF-HEALING ELECTROSTATIC (HASEL) TRANSDUCERS

#5
20250327469
2025-10-23

HYDRAULIC TOOLS, SYSTEMS FOR TOOLS, AND METHODS OF USE OR CONTROL OF SAME

#6
20250092887
2025-03-20

HYDRAULIC ACTUATOR WITH DUAL PNEUMATIC OPERATION APPLIED AS HYDRAULIC ACTUATION FOR HYDROELECTRIC POWER PLANTS

#7
20250084875
2025-03-13

DUAL ELECTRICAL POWER SUPPLIES FOR A HYDRAULIC ACTUATOR SYSTEM

#8
20240218890
2024-07-04

RELIEF PRESSURE CONTROL DEVICE

#9
20240141932
2024-05-02

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

#10
20240141885
2024-05-02

Hydraulic pump performance deterioration detection system

#11
20240077092
2024-03-07

Hydraulic pump performance deterioration detection system

#12
20240052859
2024-02-15

Hydraulically amplified self-healing electrostatic (HASEL) transducers

#13
20240044346
2024-02-08

HYDRAULIC CYLINDER POSITION CONTROL FOR LIFTING AND LOWERING TOWED IMPLEMENTS

#14
20240026908
2024-01-25

Arrangement for operating a hydraulic consumer

#15
20230375015
2023-11-23

PILOT CONTROL UNIT FOR AT LEAST ONE VALVE DRIVE OF A HYDRAULIC VALVE AND METHOD FOR OPERATING SAME

#16
20230292670
2023-09-21

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

#17
20230279880
2023-09-07

Remote-Controlled Wireless Frame

#18
20230175536
2023-06-08

Control device and hydraulic system including the same

#19
20230103970
2023-04-06

Method for operating an electric motor, delivery pump, motor vehicle having a delivery pump of said type, computer program, and computer-readable medium

#20
20230099778
2023-03-30

Control device and hydraulic system including the same

#21
20230097474
2023-03-30

Fluidic control system

#22
20230022750
2023-01-26

Dynamic Logic Element For Controlling Pressure Limit In Hydraulic System

#23
20220381268
2022-12-01

Hydraulically amplified self-healing electrostatic actuators

#24
20220361394
2022-11-17

System and method for adjusting actuator pressure on an agricultural implement using a valve

#25
20220341442
2022-10-27

NON-ELECTRONIC CONTROL USING PNEUMATICALLY-ACTUATED TRANSISTOR LOGIC

#26
20220325498
2022-10-13

System and method of tilting a track loader bucket to achieve desired cross slope

#27
20220312694
2022-10-06

Power Control System

#28
20220186447
2022-06-16

Milling Machine with Adjustable Rotor Enclosure

#29
20220120297
2022-04-21

Method for Operating a Hydraulic Drive

#30
20220099112
2022-03-31

Actuator device, humanoid robot and power assist device

#31
20220082115
2022-03-17

Control of hydraulic actuating cylinders in roll stands

#32
20220074437
2022-03-10

Hydraulic Power Pack System

#33
20220010821
2022-01-13

Hydraulic control systems and methods using multi-function dynamic scaling

#34
20210301843
2021-09-30

MACHINE AND AUXILIARY HYDRAULIC PUMP ASSOCIATED WITH MACHINE

#35
20210283971
2021-09-16

Relative velocity based actuator velocity calibration system

#36
20210215020
2021-07-15

System and method for electro-hydraulic actuation of downhole tools

#37
20210214920
2021-07-15

Construction machine

#38
20210190103
2021-06-24

Hydraulic system and method for controlling a hydraulic system

#39
20210156406
2021-05-27

Vent with valve

#40
20210148385
2021-05-20

Electrically actuated valves for manifold trailers or skids

#41
20210148384
2021-05-20

Open center hydraulic system and valve

#42
20210137012
2021-05-13

AGRICULTURAL RAKING MACHINE

#43
20210094524
2021-04-01

Hydraulic assembly of a traction control system of a vehicle brake system having two separate control units

#44
20210088059
2021-03-25

Agricultural baler with hydraulic flow controller

#45
20210054858
2021-02-25

ACTUATOR CONTROLLER

#46
20200400165
2020-12-24

Method of operating a fluid system, fluid system and computer program product

#47
20200361435
2020-11-19

Hydraulic system, vehicle and composite vehicle

#48
20200332812
2020-10-22

Hydraulic arrangement having linked hydraulic units, climbing formwork, and method for moving the climbing formwork using such a hydraulic arrangement

#49
20200325914
2020-10-15

Hydraulic systems and methods for nested pressure regulating valves

#50
20200309166
2020-10-01

Hydraulic system and emergency operation method

#51
20200256354
2020-08-13

Hydraulic control system and method

#52
20200236851
2020-07-30

Modularized hydraulic system for agricultural combine

#53
20200232185
2020-07-23

Loading machine control device and control method

#54
20200224684
2020-07-16

Actuating system for a valve

#55
20200224384
2020-07-16

Work machine

#56
20200221643
2020-07-16

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

#57
20200220445
2020-07-09

Hydraulic actuator device and method for creating a pressure build-up in at least one partial volume of a hydraulic system filled with an electrically conductive medium

#58
20200217335
2020-07-09

Hydraulic power pack system

#59
20200200195
2020-06-25

Method for controlling a movement of a movably mounted body of a mechanical system

#60
20200182262
2020-06-11

Fluidic control system

#61
20200165797
2020-05-28

Dynamic open center hydraulic system control

#62
20200115886
2020-04-16

Working machine

#63
20190376533
2019-12-12

Actuator limit controller

#64
20190327901
2019-10-31

Method for operating an agricultural roundbaler ejection flap

#65
20190277315
2019-09-12

ELECTROMAGNETIC POWERTRAIN SYSTEM

#66
20190234043
2019-08-01

Implement and method for controlling the implement

#67
20190211924
2019-07-11

Propel system with active pump displacement control for balancing propel pump pressures in agricultural vehicles

#68
20190162211
2019-05-30

A method and a system for controlling the driving engine and hydraulic pumps of a hydraulic machine, as well as a pile driving rig

#69
20190162207
2019-05-30

Hydraulic system with servo drive and hydraulic load and control unit for the hydraulic system

#70
20190136998
2019-05-09

Valve opening and closing system and valve control device

#71
20190136880
2019-05-09

Method for operating a valve device, valve device and data storage medium with a computer program

#72
20190120264
2019-04-25

Method for the supply of compressed air to a compressed-air consumer, valve device and data carrier with a computer program

#73
20190112787
2019-04-18

Temperature responsive hydraulic derate

#74
20190063472
2019-02-28

Low profile electro-hydrostatic actuator

#75
20190063042
2019-02-28

Hydraulic control system of leveling oil cylinder of loading head

#76
20190055966
2019-02-21

System for hydraulic pressure relief valve operation

#77
20190041809
2019-02-07

Automatic loading system and method for service functions of hydraulic machine

#78
20190003496
2019-01-03

Harvester head reel segments synchronization

#79
20190003495
2019-01-03

Harvester head reel rephasing

#80
20180354608
2018-12-13

Device for controlling a propeller, having variable-pitch blades, of a turboprop engine

#81
20180314288
2018-11-01

Trigger guard and pendant for a portable hydraulic power unit

#82
20180313373
2018-11-01

EQUIPMENT AND METHOD FOR SUPERVISING VALVES IN A HYDRAULIC CIRCUIT, ASSOCIATED HYDRAULIC CIRCUIT AND COMPUTER PROGRAM PRODUCT

#83
20180313350
2018-11-01

Solenoid valve for a portable hydraulic power unit

#84
20180313344
2018-11-01

Portable hydraulic power unit having a pump fixed to an exterior side of a fluid supply tank

#85
20180313342
2018-11-01

Portable hydraulic power unit

#86
20180305900
2018-10-25

Method for controlling the engine speed of a utility vehicle

#87
20180282967
2018-10-04

Hydraulic supply systems

#88
20180274515
2018-09-27

Movable-blade operation system for hydraulic machine

#89
20180245609
2018-08-30

Measurement and use of hydraulic stiffness properties of hydraulic apparatus

#90
20180237095
2018-08-23

TWO-WHEEL SUSPENSION MECHANISM

#91
20180180069
2018-06-28

Closed loop and/or open loop control method for an electropneumatic field device

#92
20180172038
2018-06-21

Electromagnetic powertrain system

#93
20180172037
2018-06-21

System and method for providing hydraulic power

#94
20180134201
2018-05-17

System and method for operating a ballast car hopper door

#95
20180112682
2018-04-26

Electropneumatic positioner and a field device having an electro-pneumatic positioner

#96
20180094649
2018-04-05

Systems and methods for detecting a type of hydraulic device

#97
20180044891
2018-02-15

Control system for construction machinery

#98
20180044887
2018-02-15

Closed-loop control of swing

#99
20180023271
2018-01-25

Variable-speed volume-control direct-drive all-electric hydraulic excavator driving and energy recovery system

#100
20170314585
2017-11-02

Fluid-operated apparatus, method, and circuit

#101
20170284316
2017-10-05

Variable engine speed control

#102
20170198728
2017-07-13

Actuator device, humanoid robot and power assist device

#103
20170182635
2017-06-29

Sensor for power clamp

#104
20170121940
2017-05-04

Drive device of construction machine

#105
20170107693
2017-04-20

Input control method of touch panel monitor for working machine

#106
20170089450
2017-03-30

Method to control an electric motor of a hydraulic system of a transmission in a vehicle

#107
20170089369
2017-03-30

Voltage detector switch

#108
20170089365
2017-03-30

Actuator limit controller

#109
20170075365
2017-03-16

Wireless valve actuator system and method

#110
20170057619
2017-03-02

Dynamic activation of pumps of a fluid power system

#111
20170002845
2017-01-05

Electro hydrostatic actuators

#112
20170002844
2017-01-05

Electro hydrostatic actuators

#113
20160360705
2016-12-15

Electrohydraulic circuit for a drop floor assembly

#114
20160348340
2016-12-01

Construction machine

#115
20160341223
2016-11-24

Device and method for controlling a hydraulic machine

#116
20160333552
2016-11-17

Closed-circuit hydraulic system for construction machine

#117
20160312442
2016-10-27

Control system of hybrid construction machine

#118
20160305457
2016-10-20

Electromagnetic powertrain system

#119
20160258453
2016-09-08

Valve positioner having bypass component and control valve comprised thereof

#120
20160123354
2016-05-05

Shovel and method of controlling shovel

#121
20160115672
2016-04-28

Power system for a working machine

#122
20160061235
2016-03-03

Hybrid construction machine

#123
20160037721
2016-02-11

Pressure control for hydraulically actuated agricultural headers

#124
20160032947
2016-02-04

Construction machine

#125
20160025114
2016-01-28

Actuator limit controller

#126
20160017901
2016-01-21

PRESSURE LOSS REDUCING CIRCUIT FOR A WORKS MACHINE

#127
20160017898
2016-01-21

MERGING CIRCUIT OF HYDRAULIC APPARATUS

#128
20160017897
2016-01-21

REGENERATIVE CIRCUIT OF HYDRAULIC APPARATUS

#129
20150369261
2015-12-24

HYDRAULIC DRIVE SYSTEM

#130
20150361996
2015-12-17

Hybrid hydraulic systems for industrial processes

#131
20150360910
2015-12-17

Auxiliary pumping unit

#132
20150345112
2015-12-03

Work vehicle and work vehicle control method

#133
20150316079
2015-11-05

Control valve and system with primary and auxiliary function control

#134
20150316077
2015-11-05

Method for operating a hydraulic device with pump and servomotor, and associated hydraulic device

#135
20150259887
2015-09-17

Hydraulic section for load sensing applications and multiple hydraulic distributor

#136
20150259047
2015-09-17

Closed-loop control system for controlling a device

#137
20150219127
2015-08-06

HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINERY

#138
20150152890
2015-06-04

Construction machine and controller

#139
20150135693
2015-05-21

Engine control apparatus for work machine and engine control method thereof

#140
20150107234
2015-04-23

Boom driving apparatus for construction machine

#141
20150082780
2015-03-26

Drive system for hydraulically driven working mechanisms of a working machine

#142
20150075147
2015-03-19

Hydraulic control system for machine

#143
20150059334
2015-03-05

Brake hydraulic device for vehicle

#144
20150059327
2015-03-05

DUAL CHANNEL PULSED VARIABLE PRESSURE HYDRAULIC TEST APPARATUS

#145
20140336829
2014-11-13

Method for configuring a fluid control unit, computer program product and fluidic system

#146
20140311138
2014-10-23

Systems and methods for detecting a type of hydraulic device

#147
20140230643
2014-08-21

Actuator displacement measurement system in electronic hydraulic system of construction equipment

#148
20140156089
2014-06-05

Device and method for controlling a fluid actuator

#149
20140137549
2014-05-22

HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINERY

#150
20140130484
2014-05-15

Pressure medium system, in particular hydraulic system

#151
20140116241
2014-05-01

Electropneumatic control device and electropneumatic subassembly

#152
20140060025
2014-03-06

Hydraulic control system having electronic flow limiting

#153
20130291714
2013-11-07

Hydraulic system including priority based valve sequencing

#154
20130152569
2013-06-20

Speed control strategy

#155
20130081716
2013-04-04

Hydraulic apparatus control system

#156
20130055885
2013-03-07

Wireless pneumatic controller

#157
20120324878
2012-12-27

Hydraulic drive system and diagnostic control strategy for improved operation

#158
20120301325
2012-11-29

PUMP SYSTEM HAVING OPEN-LOOP TORQUE CONTROL

#159
20120299310
2012-11-29

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

#160
20120283915
2012-11-08

Drive control system for a vehicle and method

#161
20120279209
2012-11-08

Systems and methods for energy storage and recovery using compressed gas

#162
20120249231
2012-10-04

Field device

#163
20120152381
2012-06-21

MODULAR CONTROL SYSTEM FOR FLUIDIC CONTROL DEVICES

#164
20120093615
2012-04-19

Round bale loader for transport frame

#165
20120090308
2012-04-19

Hybrid hydraulic systems for industrial processes

#166
20120006013
2012-01-12

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

#167
20120000557
2012-01-05

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

#168
20110314803
2011-12-29

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

#169
20110296823
2011-12-08

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

#170
20110252777
2011-10-20

Systems and methods for improving drivetrain efficiency for compressed gas energy storage

#171
20110219760
2011-09-15

Systems and methods for energy storage and recovery using compressed gas

#172
20110208362
2011-08-25

Device and method for controlling a fluid actuator

#173
20110167813
2011-07-14

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

#174
20110120296
2011-05-26

Actuator, actuator control method, and actuator control program

#175
20110072809
2011-03-31

Hydraulic system and method for control

#176
20110056193
2011-03-10

Systems and methods for energy storage and recovery using compressed gas

#177
20110047723
2011-03-03

CLOSED-LOOP CONTROL SYSTEM FOR CONTROLLING A DEVICE

#178
20110030816
2011-02-10

CONTROL SYSTEM FOR CONTROLLING A DIRECTIONAL CONTROL VALVE

#179
20110030364
2011-02-10

Flow management system for hydraulic work machine

#180
20100319337
2010-12-23

HYDROSTATIC DRIVE SYSTEM

#181
20100308179
2010-12-09

Electric power actuator and control method for such an actuator

#182
20100229970
2010-09-16

Valve apparatus

#183
20100229544
2010-09-16

Systems and methods for improving drivetrain efficiency for compressed gas energy storage

#184
20100212306
2010-08-26

Hydraulic drive system and diagnostic control strategy for improved operation

#185
20100211227
2010-08-19

Regulator module for a valve cluster

#186
20100162885
2010-07-01

System and method for enabling floating of earthmoving implements

#187
20100139277
2010-06-10

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

#188
20100132798
2010-06-03

Control valve actuation

#189
20100115936
2010-05-13

System and method for pump-controlled cylinder cushioning

#190
20100097040
2010-04-22

Electronic control for a hydraulically driven auxiliary power source

#191
20100097038
2010-04-22

Electronic control for a hydraulically driven generator

#192
20100089063
2010-04-15

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

#193
20100043418
2010-02-25

HYDRAULIC SYSTEM AND METHOD FOR CONTROL

#194
20100011757
2010-01-21

Safety device for hydraulic working machine

#195
20090282822
2009-11-19

Systems and methods for energy storage and recovery using compressed gas

#196
20090260352
2009-10-22

Hydraulic system having load sensing capabilities

#197
20090257891
2009-10-15

Hydraulic system and method for controlling valve phasing

#198
20090255246
2009-10-15

Hydraulic system including open loop and closed loop valve control schemes

#199
20090255245
2009-10-15

Hydraulic system including priority based valve sequencing

#200
20090217656
2009-09-03

Hydraulically driven industrial machine

#201
20090199703
2009-08-13

POSITIONER FOR DOUBLE-ACTING PNEUMATIC ACTUATOR, DOUBLE-ACTING PNEUMATIC ACTUATOR AND METHOD FOR OPERATING THE DOUBLE-ACTING PNEUMATIC ACTUATOR

#202
20090178399
2009-07-16

Digital hydraulic system

#203
20090145291
2009-06-11

Method for detecting the drive type of an actuator (II)

#204
20090134848
2009-05-28

Electronic control for a hydraulically driven generator

#205
20090133761
2009-05-28

Control valve unit with alternating stop

#206
20090007769
2009-01-08

Positioning control mechanism for double-acting air cylinder

#207
20080300759
2008-12-04

Drive control system for a vehicle and method

#208
20080300758
2008-12-04

Drive control system for a vehicle and method

#209
20080115844
2008-05-22

Mechatronic device

#210
20080042087
2008-02-21

Electrohydraulic valve control circuit with magnetic hysteresis compensation

#211
20080034957
2008-02-14

Hydraulic Actuator Control Circuit With Pressure Operated Counterbalancing Valves

#212
20080016861
2008-01-24

Hydraulic controller for working machine

#213
20070295924
2007-12-27

Fluid controller and a method of detecting an error in a fluid controller

#214
20070254536
2007-11-01

ELECTRONIC UNIT

#215
20070204607
2007-09-06

Hydraulic circuit of construction machine

#216
20070144165
2007-06-28

Control apparatus for hydraulic cylinder

#217
20070131512
2007-06-14

Method of actuating a clutch

#218
20070120662
2007-05-31

Digital Hydraulic system

#219
20070089408
2007-04-26

HYDRAULIC CONTROLLER FOR WORKING MACHINE

#220
20070079609
2007-04-12

Hybrid hydraulic system and work machine using same

#221
20070074510
2007-04-05

Hydraulic system having augmented pressure compensation

#222
20070028760
2007-02-08

Pressure control system for a torque-transmitting mechanism

#223
20060236689
2006-10-26

Apparatus and method for controlling a pump flow of heavy construction equipment

#224
20060218915
2006-10-05

Hydraulic cylinder cushioning

#225
20060191262
2006-08-31

Hydraulic control valve system with electronic load sense control

#226
20060179831
2006-08-17

Semi-active ride control for a mobile machine

#227
20060162545
2006-07-27

Hydraulic cylinder device

#228
20060156916
2006-07-20

Electronic control for a hydraulically driven generator

#229
20060090802
2006-05-04

Valve arrangement

#230
20060042906
2006-03-02

Low power modulating clutch control system with combination accumulator and piston actuator

#231
20060042240
2006-03-02

System and method for controlling hydraulic fluid flow

#232
20060037467
2006-02-23

Servo-pneumatic actuator

#233
20060037466
2006-02-23

Method and apparatus for controlling air cylinder

#234
20050278074
2005-12-15

Feedback control methods and apparatus for electro-pneumatic control systems

#235
20050265852
2005-12-01

Fluid pressure control device

#236
20050144939
2005-07-07

Hydraulic actuating device for a convertible top assembly of a vehicle

#237
20050087065
2005-04-28

Hydraulic system for a work machine

#238
20050081518
2005-04-21

Flow-control apparatus for controlling the swing speed of a boom assembly

#239
20050072954
2005-04-07

Hydraulic valve arrangement

#240
20050001606
2005-01-06

Hybrid construction machine having auxiliary battery and control apparatus thereof

#241
20050001567
2005-01-06

Actuator driving device of working machine

#242
18988992
2026-01-20

Energy recovery system and control strategy for hydraulic excavator boom

#243
18516414
2025-02-25

Power control system for traction and implement pump motors of electric machine

#244
18224225
2026-03-24

Trailer assembly

#245
17443834
2022-07-05

Flow management of a hydraulic system

#246
15902208
2022-03-01

Waste pump removal apparatus

#247
14012780
2016-05-17

Position sensing hydraulic cylinder