ClassID:

146347

F15B2211/45 - CPC Classification

Classification description:

Circuits for servomotor systems; Flow control Control of bleed-off flow, e.g. control of bypass flow to the return line

Recent Application in this class:
#1
20260029003
2026-01-29

HYDRAULIC CONTROL DEVICE, HYDRAULIC CIRCUIT CONTROL METHOD, AND HYDRAULIC DEVICE

#2
20260002549
2026-01-01

HYDRAULICALLY POWERED POWER SYSTEMS AND HYDRAULIC CIRCUITS HAVING A FLOW VALVE AND A HYDRAULIC PROPORTIONAL BYPASS VALVE

#3
20250382771
2025-12-18

ENERGY RECOVERY PREVENTION FOR A HYDRAULIC SYSTEM

#4
20250198122
2025-06-19

Wheeled Construction Machine

#5
20250186274
2025-06-12

HYDRAULIC CIRCUIT FOR A PATIENT HANDLING APPARATUS

#6
20250116282
2025-04-10

HYDRAULIC DISTRIBUTOR WITH COMPENSATION DEVICE FOR DIRECTIONAL VALVES

#7
20250043808
2025-02-06

HYDRAULIC SYSTEM, WORKING VEHICLE AND METHOD

#8
20240352951
2024-10-24

Hydraulic system

#9
20240318670
2024-09-26

OPEN CENTRE HYDRAULIC DISTRIBUTOR AND POWER TRANSMISSION SYSTEM FOR TRANSMITTING TO USERS OF AN OPERATING MACHINE

#10
20240301661
2024-09-12

Work Machine

#11
20240191727
2024-06-13

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

#12
20240159256
2024-05-16

Systems and Methods for a Return Manifold

#13
20240141885
2024-05-02

Hydraulic pump performance deterioration detection system

#14
20240115440
2024-04-11

Hydraulic circuit for a patient handling apparatus

#15
20240082079
2024-03-14

Hydraulic valve and system

#16
20240077092
2024-03-07

Hydraulic pump performance deterioration detection system

#17
20240077091
2024-03-07

Hydraulic pump performance deterioration detection system

#18
20240060273
2024-02-22

Hydraulic system for working machine

#19
20240052599
2024-02-15

Multi-control valve

#20
20230358022
2023-11-09

Work machine

#21
20230193931
2023-06-22

Hydraulic machine

#22
20230175531
2023-06-08

Control system for actuating lifting function

#23
20230160179
2023-05-25

Hydraulic system for working machine

#24
20230149231
2023-05-18

Hydraulic valve and system

#25
20230126930
2023-04-27

Method of removing hydraulic fluid from an aircraft hydraulic system, an aircraft hydraulic system, and an aircraft

#26
20230078399
2023-03-16

Valve calibration system and calibration method

#27
20220402627
2022-12-22

Thermal hydraulic active warming system

#28
20220381005
2022-12-01

WORK MACHINE CONTROL SYSTEM, WORK MACHINE, WORK MACHINE CONTROL METHOD, AND WORK MACHINE CONTROL DEVICE

#29
20220333349
2022-10-20

Hydraulic unit

#30
20220307527
2022-09-29

SYSTEM TO REDUCE LINE LOSS IN PRESSURE CONTROL HYDRAULIC CIRCUIT

#31
20220298754
2022-09-22

Control valve of hydraulic system for working machine

#32
20220235800
2022-07-28

Rotating head with bypass circuit

#33
20220098833
2022-03-31

Hydraulic system for working machine

#34
20220049463
2022-02-17

Hydraulic control circuit for a construction machine

#35
20210372439
2021-12-02

Hydraulic system having a drain bypass

#36
20210332832
2021-10-28

Hydraulic system for baler implement gate

#37
20210332563
2021-10-28

Construction machine

#38
20210324609
2021-10-21

Hydraulic drive system for construction machine

#39
20210277630
2021-09-09

Hydraulic drive apparatus for work machine

#40
20210246634
2021-08-12

Construction machine

#41
20210180618
2021-06-17

Hydraulic system of working machine

#42
20210121339
2021-04-29

Hydraulic circuit for a patient handling apparatus

#43
20210121338
2021-04-29

Hydraulic valve and system

#44
20210071392
2021-03-11

Construction machine

#45
20210003150
2021-01-07

Hydraulic system of construction machine

#46
20200325917
2020-10-15

Hydraulic systems for heavy equipment

#47
20200292067
2020-09-17

HYDRAULIC SYSTEM AND METHOD FOR CONTROLLING PRESSURE IN A HYDRAULIC SYSTEM

#48
20200291610
2020-09-17

Shovel

#49
20200271136
2020-08-27

Flow control for an actuator

#50
20200271134
2020-08-27

Hydraulic device and control method of hydraulic device

#51
20200206957
2020-07-02

Pneumatic claw-controlling apparatus of a claw crane

#52
20200190770
2020-06-18

Stick control system in construction machine

#53
20200182265
2020-06-11

Hydraulic system

#54
20200095987
2020-03-26

Control apparatus for supplying at least one hydraulic consumer with fluid

#55
20200040917
2020-02-06

System for controlling construction machine and method for controlling construction machine

#56
20200031644
2020-01-30

Hydraulic bypass circuit

#57
20190292753
2019-09-26

Construction machine

#58
20190276292
2019-09-12

HYDRAULIC DRIVE DEVICE FOR CARGO VEHICLE

#59
20190233086
2019-08-01

Aircraft hydraulic system

#60
20190186105
2019-06-20

Work machine

#61
20190169819
2019-06-06

Shovel and control valve for shovel

#62
20190119879
2019-04-25

Hydraulic system for working machine and control valve

#63
20190093677
2019-03-28

Vehicle hydraulic system

#64
20190037759
2019-02-07

Sod harvester hydraulic system for actuating components with precise timing

#65
20190003494
2019-01-03

HYDRAULIC DRIVING DEVICE FOR CARGO HANDLING VEHICLE

#66
20180362072
2018-12-20

Hydraulic steering device

#67
20180334784
2018-11-22

Hydraulic system for working machine and control valve

#68
20180274567
2018-09-27

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

#69
20180238027
2018-08-23

Hydraulic pump control system of hydraulic working machine

#70
20180163375
2018-06-14

Hydraulic system for working machine

#71
20180087540
2018-03-29

Electro-hydraulic system with negative flow control

#72
20180073217
2018-03-15

Flow rate control apparatus of construction equipment and control method therefor

#73
20180058040
2018-03-01

Hydraulic drive system of construction machine

#74
20180038079
2018-02-08

Hydraulic drive system of work machine

#75
20180002897
2018-01-04

Hydraulic circuit for construction machine

#76
20170262001
2017-09-14

Systems and methods for electrohydraulic valve calibration

#77
20170227028
2017-08-10

Hydraulic drive system for working machine

#78
20170175779
2017-06-22

Hydraulic system of work machine

#79
20170145661
2017-05-25

Hydraulic circuit for construction machine

#80
20170107694
2017-04-20

Hydraulic excavator drive system

#81
20170107691
2017-04-20

Method for controlling swing motor in hydraulic system and hydraulic system

#82
20170022687
2017-01-26

Hydraulic circuit for construction machinery

#83
20170009430
2017-01-12

Working machine control system

#84
20170009429
2017-01-12

Working machine control system

#85
20170008056
2017-01-12

Apparatus and method for the electrohydraulic control of parallelism in a bending machine for working metal products

#86
20160348335
2016-12-01

Liquid-pressure driving system

#87
20160319848
2016-11-03

Hydraulic drive system

#88
20160265560
2016-09-15

Working machine control system and lower pressure selection circuit

#89
20160222990
2016-08-04

Hydraulic drive system

#90
20160215481
2016-07-28

Control system for hybrid construction machine

#91
20160160883
2016-06-09

Hydraulic circuit for construction machine

#92
20160123354
2016-05-05

Shovel and method of controlling shovel

#93
20160069282
2016-03-10

Engine speed controller of work machine

#94
20160024749
2016-01-28

Hydraulic shovel

#95
20160003265
2016-01-07

Hydraulic system for construction machine, provided with protection device

#96
20160002888
2016-01-07

Variable load sense open center hybrid system

#97
20150330416
2015-11-19

Fluid pressure control device for power shovel

#98
20150330413
2015-11-19

Hydraulic circuit for construction machine

#99
20150308625
2015-10-29

Hydraulic control arrangement for a plurality of actuators

#100
20150299987
2015-10-22

Construction machine

#101
20150252819
2015-09-10

Work machine

#102
20150107234
2015-04-23

Boom driving apparatus for construction machine

#103
20150089935
2015-04-02

Control valve apparatus of power shovel

#104
20150075154
2015-03-19

Hydraulic pressure supply system of automatic transmission

#105
20150075153
2015-03-19

Hydraulic pressure supply system of automatic transmission

#106
20150075152
2015-03-19

Hydraulic pressure supply system of automatic transmission

#107
20150075151
2015-03-19

Hydraulic pressure supply system of automatic transmission

#108
20150068200
2015-03-12

Hydraulic circuit for construction machine and control device for same

#109
20150059332
2015-03-05

Hydraulic circuit for construction machine

#110
20150059331
2015-03-05

Hydraulic circuit for construction machine and control device therefor

#111
20150044007
2015-02-12

Hydraulic control device and construction machine provided with same

#112
20150040552
2015-02-12

Hydraulic circuit for construction machine and control device for same

#113
20150015054
2015-01-15

Transport vehicle

#114
20140331662
2014-11-13

Hydraulic control device for forklift

#115
20140318113
2014-10-30

Cushioned swing circuit

#116
20140190158
2014-07-10

Hydraulic circuit, and combination valve used in same hydraulic circuit

#117
20140130486
2014-05-15

Hydraulic drive apparatus for work machine

#118
20130219877
2013-08-29

System and method for calibrating hydraulic valves

#119
20130098022
2013-04-25

Control device for a hydraulic pump of construction machinery

#120
20130074486
2013-03-28

Multi-pump system with pump-flow diversion

#121
20130025335
2013-01-31

Apparatus and method for the electrohydraulic control of parallelism in a bending machine for working metal products

#122
20120299310
2012-11-29

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

#123
20120279209
2012-11-08

Systems and methods for energy storage and recovery using compressed gas

#124
20120198831
2012-08-09

Hydraulic system for working machine

#125
20120180878
2012-07-19

Valve control valve circuit for operating a single acting hydraulic cylinder

#126
20120055050
2012-03-08

Multi-function wheel loader linkage control with optimized power management

#127
20120036845
2012-02-16

Hydraulic control apparatus for work machine

#128
20120006013
2012-01-12

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

#129
20120000557
2012-01-05

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

#130
20110314803
2011-12-29

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

#131
20110296823
2011-12-08

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

#132
20110240146
2011-10-06

Control device for hybrid construction machine

#133
20110219760
2011-09-15

Systems and methods for energy storage and recovery using compressed gas

#134
20110167813
2011-07-14

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

#135
20110072810
2011-03-31

Controller of hybrid construction machine

#136
20110056193
2011-03-10

Systems and methods for energy storage and recovery using compressed gas

#137
20110011356
2011-01-20

Fan Drive Controlling Device and Construction Machine

#138
20100320406
2010-12-23

Pressure compensated electromagnetic proportional directional flow control valve

#139
20100263363
2010-10-21

Hydraulic control device and pressure switch

#140
20100139277
2010-06-10

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

#141
20100097040
2010-04-22

Electronic control for a hydraulically driven auxiliary power source

#142
20100097038
2010-04-22

Electronic control for a hydraulically driven generator

#143
20100089063
2010-04-15

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

#144
20100084152
2010-04-08

Percussion device actuated by a pressurized non-compressible fluid

#145
20100050621
2010-03-04

Machine control system having hydraulic warmup procedure

#146
20090282822
2009-11-19

Systems and methods for energy storage and recovery using compressed gas

#147
20090159143
2009-06-25

Fluid pressure circuit

#148
20090158725
2009-06-25

Hydraulic pump with control system

#149
20090134848
2009-05-28

Electronic control for a hydraulically driven generator

#150
20090094973
2009-04-16

Hydraulic circuit for heavy equipment

#151
20080245064
2008-10-09

Anti-saturation valve assembly for load sensing hydraulic system

#152
20080229738
2008-09-25

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

#153
20080173014
2008-07-24

Hydraulic control device of construction machine

#154
20080155975
2008-07-03

Hydraulic system with energy recovery

#155
20080016861
2008-01-24

Hydraulic controller for working machine

#156
20070235078
2007-10-11

Hydraulic supply systems

#157
20070234718
2007-10-11

Hydraulic system and work machine comprising such a system

#158
20070227133
2007-10-04

Cylinder with internal pushrod

#159
20070217898
2007-09-20

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

#160
20070210645
2007-09-13

Hydraulic system with engine anti-stall control

#161
20070209503
2007-09-13

Hydraulic system with mechanism for relieving pressure trapped in an actuator

#162
20070204607
2007-09-06

Hydraulic circuit of construction machine

#163
20070199315
2007-08-30

Apparatus and methods for actuation

#164
20070169474
2007-07-26

Hydraulic control device for working machine

#165
20070120662
2007-05-31

Digital Hydraulic system

#166
20070119163
2007-05-31

Travel control device for hydraulically driven vehicle and hydraulically driven vehicle

#167
20070107421
2007-05-17

Dual pump dual pressure hydraulic circuit

#168
20070101711
2007-05-10

Servo-motor controlled hydraulic press, hydraulic actuator, and methods of positioning various devices

#169
20070089408
2007-04-26

HYDRAULIC CONTROLLER FOR WORKING MACHINE

#170
20070084201
2007-04-19

Device and method for controlling the position of a pneumatic actuator

#171
20070074509
2007-04-05

Hydraulic system for recovering potential energy

#172
20070044463
2007-03-01

Hydraulic system having area controlled bypass

#173
20070039458
2007-02-22

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

#174
20070020354
2007-01-25

Injection unit comprising a spindle drive and hydraulic support

#175
20060245881
2006-11-02

Priority hydraulic flow diverter control assembly

#176
20060218914
2006-10-05

Hydraulic control arrangement

#177
20060156916
2006-07-20

Electronic control for a hydraulically driven generator

#178
20060156914
2006-07-20

Hydraulic control

#179
20060090462
2006-05-04

Energy regeneration system for working machinery

#180
20060090461
2006-05-04

Energy regeneration system for machines

#181
20060054443
2006-03-16

Hydraulic system, in particular for motor vehicles

#182
20050284144
2005-12-29

Conduit loss compensation for a distributed electrohydraulic system

#183
20050254933
2005-11-17

Apparatus driven by a pressurized medium

#184
20050217074
2005-10-06

Control system for pneumatically-powered door installation

#185
20050204736
2005-09-22

Hydraulic control device for working machine

#186
20050199295
2005-09-15

Electrohydraulic control device

#187
20050194043
2005-09-08

Flow control apparatus

#188
20050175485
2005-08-11

Hydraulic driving system of construction machinery

#189
20050144941
2005-07-07

Hydraulic circuit of excavating and slewing working vehicle

#190
20050144939
2005-07-07

Hydraulic actuating device for a convertible top assembly of a vehicle

#191
20050103007
2005-05-19

Power system and work machine using same

#192
20050103006
2005-05-19

Power system and work machine using same

#193
20050066655
2005-03-31

Cylinder with internal pushrod

#194
20050035320
2005-02-17

Electromagnetic proportional flow rate control valve

#195
20050011190
2005-01-20

Hydraulic active boom suspension for a telehandler