ClassID:

146225

F15B2211/20569 - CPC Classification

Classification description:

Circuits for servomotor systems; Fluid pressure source, e.g. accumulator or variable axial piston pump; Systems with pumps; Type of pump capable of working as pump and motor

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
20260022718
2026-01-22

HYDRAULIC DRIVE DEVICE

#3
20260022712
2026-01-22

HYDRAULIC DRIVE DEVICE

#4
20250361883
2025-11-27

HYDRAULIC SYSTEM

#5
20240401614
2024-12-05

Hydraulic Drive System Having a 2X2Q Pump Unit

#6
20240159253
2024-05-16

ELECTRO-HYDRAULIC ACTUATOR SYSTEMS AND METHODS OF OPERATING THE SAME

#7
20230258206
2023-08-17

Hydraulic Regeneration Circuit with Multiple Speeds

#8
20230250616
2023-08-10

Hydraulic apparatus and method for a vehicle

#9
20230139226
2023-05-04

Controller and method for hydraulic apparatus

#10
20230046319
2023-02-16

Dual power electro-hydraulic motion control system

#11
20220373003
2022-11-24

DIFFERENTIAL HYDRAULIC BUFFER

#12
20220307524
2022-09-29

Optimizing mode transitions between dual power electro-hydrostatic control systems

#13
20220228609
2022-07-21

Power transfer unit with breakout friction reduction and leakage reduction

#14
20220228606
2022-07-21

Energy storage systems

#15
20220205461
2022-06-30

Hydraulic device, a hydraulic system and a working machine

#16
20220060022
2022-02-24

Integrated energy conversion, transfer and storage system

#17
20210270294
2021-09-02

A HYDRAULIC SYSTEM FOR A LOAD HANDLING VEHICLE

#18
20210254642
2021-08-19

Hydraulic circuit

#19
20210246911
2021-08-12

Methods, systems and installations for the compression, expansion and/or storage of a gas

#20
20210189694
2021-06-24

Hydraulic system with energy recovery

#21
20200248729
2020-08-06

Device having hybrid hydraulic-electric architecture

#22
20200232558
2020-07-23

Hydraulic apparatus for stretching conductors for power lines

#23
20200018328
2020-01-16

Dual power electro-hydraulic motion control system

#24
20190360583
2019-11-28

Hydraulic flushing valve arrangement

#25
20190352884
2019-11-21

Construction machine

#26
20190305558
2019-10-03

Integrated energy conversion, transfer and storage system

#27
20190234049
2019-08-01

Work machine having hydraulics for energy recovery

#28
20190211849
2019-07-11

Fluid power distribution and control system

#29
20190136874
2019-05-09

Electro-hydraulic work vehicle with energy recovery

#30
20190061918
2019-02-28

ELECTRIC HYDRAULIC ACTUATION SYSTEM FOR A SAFETY CRITICAL APPLICATION

#31
20190055964
2019-02-21

Hydraulic fluid power transmission

#32
20190010965
2019-01-10

Hydraulic apparatus comprising synthetically commutated machine, and operating method

#33
20190002258
2019-01-03

Power system for lifting apparatus

#34
20180306211
2018-10-25

Hydraulic system and method for controlling a hydraulic system

#35
20180304174
2018-10-25

Degasifying apparatus

#36
20180274568
2018-09-27

Actuating drive for a control valve, in particular steam turbine control valve and method for operating same

#37
20180266447
2018-09-20

Pump-controlled hydraulic circuits for operating a differential hydraulic actuator

#38
20180251958
2018-09-06

Hydraulic driving apparatus of work machine

#39
20180195254
2018-07-12

Apparatus and method for controlling construction machine

#40
20180155044
2018-06-07

Method and apparatus for operating a power system architecture

#41
20180023271
2018-01-25

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

#42
20170284388
2017-10-05

Industrial system with synthetically commutated variable displacement fluid working machine

#43
20170254308
2017-09-07

Hydrostatic drive

#44
20170241445
2017-08-24

Fluid systems for machines with integrated energy recovery circuit

#45
20170234338
2017-08-17

Hydrostatic drive

#46
20170198730
2017-07-13

Hydraulic apparatus

#47
20170175782
2017-06-22

Construction machinery

#48
20170159678
2017-06-08

System having combinable transmission and implement circuits

#49
20170130744
2017-05-11

System and method for hydraulic energy recovery

#50
20170130739
2017-05-11

System and method of hydraulic energy recovery for machine start-stop and machine ride control

#51
20170102011
2017-04-13

HYDRAULIC DRIVE DEVICE FOR A MOLDING MACHINE

#52
20170073931
2017-03-16

Work machine

#53
20170023032
2017-01-26

Loop-flushing-system for hydrostatic apparatus

#54
20170016208
2017-01-19

Work machine

#55
20160348342
2016-12-01

Hydraulic system of construction machinery and method of controlling hydraulic system

#56
20160341168
2016-11-24

Hydrostatic drive system

#57
20160333903
2016-11-17

Hydraulic system having regeneration and hybrid start

#58
20160333552
2016-11-17

Closed-circuit hydraulic system for construction machine

#59
20160281745
2016-09-29

Integration of swing energy recovery and engine anti-idling systems

#60
20160208459
2016-07-21

Work machine driving device

#61
20160186785
2016-06-30

Hydraulic energy recovery system

#62
20160131130
2016-05-12

Power unit of hydraulic pumping unit and corresponding hydraulic pumping unit

#63
20160102686
2016-04-14

Hydraulic system for construction equipment

#64
20160091004
2016-03-31

Method for controlling pressure in a hydraulic actuator

#65
20160084277
2016-03-24

Hydraulic system for a working machine and a method for controlling a hydraulic system

#66
20160025113
2016-01-28

Apparatus for driving work machine

#67
20160010663
2016-01-14

Hydraulic hybrid swing drive system for excavators

#68
20160002889
2016-01-07

Engine-assist device and industrial machine

#69
20150361998
2015-12-17

Hydraulic system with energy recovery

#70
20150308463
2015-10-29

Smooth control of hydraulic actuator

#71
20150300380
2015-10-22

Lifting device

#72
20150252554
2015-09-10

Hydraulic drive system for construction machine

#73
20150247305
2015-09-03

Construction machinery

#74
20150176617
2015-06-25

Energy recapture system for hydraulic elevators

#75
20150174997
2015-06-25

Drive system, in particular for a self-propelled construction machine, in particular a soil compactor

#76
20150152890
2015-06-04

Construction machine and controller

#77
20150121860
2015-05-07

Hydraulic drive circuit

#78
20150107466
2015-04-23

Machine press

#79
20150107236
2015-04-23

Hydraulic closed circuit system

#80
20150025726
2015-01-22

Hybrid construction machine

#81
20150013324
2015-01-15

Forklift hydraulic control apparatus

#82
20140369866
2014-12-18

Hydraulic drive device for cargo handling vehicle

#83
20140350731
2014-11-27

Driver self-tuning method using electro-hydraulic actuator system

#84
20140325974
2014-11-06

Hydraulic hybrid system for rotatory applications

#85
20140318115
2014-10-30

System for improving the energy efficiency in hydraulic systems, piston accumulator and pressure accumulator provided for such a system

#86
20140260222
2014-09-18

Hydraulic regeneration system and method for a material handling vehicle

#87
20140212305
2014-07-31

Drive train of a vehicle

#88
20140182279
2014-07-03

Shovel and method of controlling shovel

#89
20140166114
2014-06-19

Control system for hydraulic system and method for recovering energy and leveling hydraulic system loads

#90
20140123633
2014-05-08

Energy recovery method and system

#91
20140064998
2014-03-06

Hydraulic motor assembly for an aerial refueling system

#92
20140033698
2014-02-06

METERLESS HYDRAULIC SYSTEM HAVING FORCE MODULATION

#93
20140033697
2014-02-06

METERLESS HYDRAULIC SYSTEM HAVING FORCE MODULATION

#94
20140033689
2014-02-06

METERLESS HYDRAULIC SYSTEM HAVING FORCE MODULATION

#95
20140026550
2014-01-30

Hydraulic energy recovery system

#96
20140023523
2014-01-23

Closed loop drive circuit with external brake assist

#97
20140020368
2014-01-23

Hydraulic circuit for progressive engagement of a hydraulic device

#98
20140004998
2014-01-02

Hydraulic launch assist system

#99
20140004986
2014-01-02

ELECTRIC MOTOR/GENERATOR POWER TRANSFER UNIT

#100
20130318955
2013-12-05

Electro-hydraulic system for recovering and reusing potential energy

#101
20130283776
2013-10-31

Energy-recovery generation system for handling and carrying electric vehicle

#102
20130280111
2013-10-24

Propel circuit and work circuit combinations for a work machine

#103
20130247751
2013-09-26

Strain energy accumulator

#104
20130240068
2013-09-19

Compressed air energy storage

#105
20130236272
2013-09-12

Hydraulic system and crane

#106
20130232963
2013-09-12

Digital hydraulic transformer and method for recovering energy and leveling hydraulic system loads

#107
20130199168
2013-08-08

Apparatus and method for recuperation of hydraulic energy

#108
20130195681
2013-08-01

Method for obtaining a full range of lift speeds using a single input

#109
20130152565
2013-06-20

HYDRAULIC SYSTEM HAVING ENERGY RECOVERY

#110
20130125540
2013-05-23

Apparatus, method and computer program product for moving cargo, and a kit and method for upgrading an apparatus for moving cargo

#111
20130125536
2013-05-23

System and method for energy recovery

#112
20130098464
2013-04-25

Closed-loop hydraulic system having regeneration configuration

#113
20130098020
2013-04-25

Meterless hydraulic system having flow sharing and combining functionality

#114
20130098019
2013-04-25

Meterless hydraulic system having flow sharing and combining functionality

#115
20130098016
2013-04-25

Meterless hydraulic system having flow sharing and combining functionality

#116
20130098012
2013-04-25

METERLESS HYDRAULIC SYSTEM HAVING MULTI-CIRCUIT RECUPERATION

#117
20130098011
2013-04-25

HYDRAULIC SYSTEM HAVING MULTIPLE CLOSED-LOOP CIRCUITS

#118
20130096712
2013-04-18

Method and device for operating a driven axle in a machine tool

#119
20130081704
2013-04-04

Meterless hydraulic system having multi-actuator circuit

#120
20130081386
2013-04-04

System and method for controlling charging of an accumulator in an electro-hydraulic system

#121
20130081384
2013-04-04

Meterless hydraulic system having pump protection

#122
20130081383
2013-04-04

Closed-loop hydraulic system having energy recovery

#123
20130048117
2013-02-28

Meterless hydraulic system having displacement control valve

#124
20130047599
2013-02-28

Meterless hydraulic system having load-holding bypass

#125
20130047592
2013-02-28

Meterless hydraulic system having restricted primary makeup

#126
20130013159
2013-01-10

ACTUATOR CONTROL DEVICE AND WORKING MACHINE EQUIPPED WITH SAME

#127
20120324875
2012-12-27

OPTIMIZED SYSTEM RESPONSE WITH MULTIPLE COMMANDS

#128
20120308404
2012-12-06

Hydrostatic hybrid drive system

#129
20120304636
2012-12-06

Hydraulic fan circuit

#130
20120304631
2012-12-06

Hydraulic fluid system

#131
20120299310
2012-11-29

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

#132
20120279209
2012-11-08

Systems and methods for energy storage and recovery using compressed gas

#133
20120260644
2012-10-18

Engine augmentation of hydraulic control system

#134
20120211112
2012-08-23

Multiple accumulator systems and methods of use thereof

#135
20120198827
2012-08-09

Hydraulic drive system

#136
20120134848
2012-05-31

HYDRAULIC FAN CIRCUIT HAVING ENERGY RECOVERY

#137
20120023924
2012-02-02

VARIABLE HYDRAULIC SYSTEM

#138
20120006013
2012-01-12

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

#139
20120000557
2012-01-05

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

#140
20110314803
2011-12-29

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

#141
20110302913
2011-12-15

Hydrostatic System Having A Hydropneumatic Accumulator

#142
20110296823
2011-12-08

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

#143
20110278068
2011-11-17

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

#144
20110252777
2011-10-20

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

#145
20110219760
2011-09-15

Systems and methods for energy storage and recovery using compressed gas

#146
20110167813
2011-07-14

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

#147
20110072810
2011-03-31

Controller of hybrid construction machine

#148
20110061375
2011-03-17

Hydraulic drive system

#149
20110056193
2011-03-10

Systems and methods for energy storage and recovery using compressed gas

#150
20110030364
2011-02-10

Flow management system for hydraulic work machine

#151
20110017308
2011-01-27

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

#152
20100236232
2010-09-23

Drive for a Hydraulic Excavator

#153
20100229544
2010-09-16

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

#154
20100162593
2010-07-01

Displacement-controlled hydraulic system for multi-function machines

#155
20100139277
2010-06-10

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

#156
20100107620
2010-05-06

Rotary flow control valve with energy recovery

#157
20100089063
2010-04-15

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

#158
20100037604
2010-02-18

Fluid power distribution and control system

#159
20090320460
2009-12-31

Aircraft Auxiliary Systems Pump

#160
20090287373
2009-11-19

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

#161
20090282822
2009-11-19

Systems and methods for energy storage and recovery using compressed gas

#162
20090241534
2009-10-01

ENERGY ACCUMULATOR UNIT

#163
20090210120
2009-08-20

Hydrostatic regenerative drive system

#164
20090193801
2009-08-06

Hydraulic drive system

#165
20090173923
2009-07-09

Lifting system

#166
20090165451
2009-07-02

HYDRAULIC FLUID ACCUMULATOR WITH INTEGRATED HIGH-PRESSURE AND LOW-PRESSURE CHAMBER

#167
20090165450
2009-07-02

Hydraulic system

#168
20090101216
2009-04-23

Scavenging Valve for a Hydraulic Circuit

#169
20090100830
2009-04-23

Hydraulic drive system

#170
20080302099
2008-12-11

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

#171
20080295505
2008-12-04

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

#172
20080295504
2008-12-04

Method for controlling a hydraulic cylinder in a work machine

#173
20080294316
2008-11-27

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

#174
20080292474
2008-11-27

Method for controlling a hydraulic machine in a control system

#175
20080276606
2008-11-13

Hydraulic drive system with exiting from pumping and motoring

#176
20080223028
2008-09-18

Pump flow control of hydraulic circuit and associated method

#177
20080210485
2008-09-04

Control system for frame-steering of a vehicle and method for controlling two steering cylinders in a frame-steered vehicle

#178
20080155975
2008-07-03

Hydraulic system with energy recovery

#179
20080152513
2008-06-26

HYDRAULIC CIRCUIT ARRANGEMENT WITH RECOVERY OF ENERGY

#180
20080141668
2008-06-19

Electrohydraulic drawing press cushion drive

#181
20080104955
2008-05-08

Bidirectional hydraulic transformer

#182
20080078286
2008-04-03

Quiet fluid supply valve

#183
20080008536
2008-01-10

Laying apparatus for cables, lines, conductors or suchlike, and relative laying method

#184
20070278030
2007-12-06

Machine, in particular construction machine

#185
20070169473
2007-07-26

HYDRAULIC CIRCUIT

#186
20070166168
2007-07-19

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

#187
20070120662
2007-05-31

Digital Hydraulic system

#188
20070079609
2007-04-12

Hybrid hydraulic system and work machine using same

#189
20060156713
2006-07-20

Hydraulic drive system

#190
20060090949
2006-05-04

Hydrostatic drive system

#191
20050193730
2005-09-08

Hydraulic service module

#192
20050089374
2005-04-28

Laying apparatus for cables, lines, conductors or suchlike, and relative laying method

#193
20050042121
2005-02-24

Hydraulic equipment