ClassID:

145990

F15B13/027 - CPC Classification

Classification description:

Details of servomotor systems ; Valves for servomotor systems; Fluid distribution or supply devices characterised by their adaptation to the control of servomotors Check valves

Recent Application in this class:
#1
20260079063
2026-03-19

SYSTEMS AND METHODS FOR CONTROL AND MONITORING OF ACTUATED VALVES

#2
20260078778
2026-03-19

PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS

#3
20260022717
2026-01-22

HYDRAULIC SYSTEM

#4
20260020511
2026-01-22

HYDRAULIC CONTROL SYSTEM FOR AN AGRICULTURAL TILLAGE IMPLEMENT

#5
20260015826
2026-01-15

Systems and Methods for Hydraulic Ride Control

#6
20250388278
2025-12-25

DUAL ACTING HYDRAULIC SYSTEM AND RELATED DEVICES AND METHODS

#7
20250369459
2025-12-04

A PNEUMATIC SYSTEM FOR A VEHICLE

#8
20250361883
2025-11-27

HYDRAULIC SYSTEM

#9
20250256674
2025-08-14

Restraint Systems and Restraint System Methods

#10
20250237212
2025-07-24

Hydraulic Pump Providing Enhanced Physical Mobility

#11
20250230822
2025-07-17

CONTROL CIRCUIT FOR A HARVESTER HEAD

#12
20250222736
2025-07-10

Fluid System For A Vehicle

#13
20250214386
2025-07-03

Fluid System For A Vehicle

#14
20250188960
2025-06-12

VALVE BLOCK, AND MULTI-CONTROL VALVE DEVICE HAVING SAME

#15
20250154967
2025-05-15

MOTOR LOAD INTERFACE SEALING ARRANGEMENT

#16
20250146256
2025-05-08

METHOD FOR CONTROLLING WORKING MACHINE AND WORKING MACHINE

#17
20250146248
2025-05-08

HYDRAULIC SYSTEM FOR A WORK VEHICLE WITH VALVE ASSEMBLY INCORPORATING A BYPASS LINE

#18
20250137476
2025-05-01

HYDRAULIC SYSTEM, METHOD, AND INTEGRATED VALVE BLOCK OF SLEWING MECHANISM

#19
20250012299
2025-01-09

PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS

#20
20250003522
2025-01-02

Electro-Hydraulic Actuator with a Pilot-Actuated Float Mode

#21
20250002174
2025-01-02

HYDRAULIC SYSTEM FOR RAPID MOORING DEVICE OF OFFSHORE OPERATION HELICOPTER AND CONTROL METHOD

#22
20240337277
2024-10-10

INTEGRATED PUMP DEVICE

#23
20240326217
2024-10-03

Hammer piston

#24
20240287949
2024-08-29

THREE SERVOVALVE THRUST REVERSER ACTUATOR SYSTEM

#25
20240269806
2024-08-15

Safe Tool for an Individual Pumping Unit

#26
20240240658
2024-07-18

HYDRAULIC POWER PACK MODULE

#27
20240198884
2024-06-20

HYDRAULIC CYLINDER ASSEMBLY

#28
20240167488
2024-05-23

FLUID CIRCUIT

#29
20240125666
2024-04-18

SYSTEMS AND METHODS FOR CONTROL AND MONITORING OF ACTUATED VALVES

#30
20240102494
2024-03-28

Hydraulic circuit including a hydraulically actuatable motion control valve

#31
20240093703
2024-03-21

Hydraulic supply device

#32
20240084829
2024-03-14

Hydraulic Drive for a Hydraulic Consumer Alternately Pressurized in Opposite Directions during Operation

#33
20240084823
2024-03-14

Hydraulic excavator drive system

#34
20240052962
2024-02-15

SYSTEM FOR TRACTION INSIDE PIPES, WITH FLEXIBLE RESERVOIR AND WITH MOTORIZED PUMP FOR HYDRAULIC POWER

#35
20240051367
2024-02-15

PRE-PRESSURIZED SYSTEM WITH REVERSE ROTATION OF PUMP FOR VALVE ACTUATION

#36
20240035586
2024-02-01

Pilot-operated valve with a position indicator

#37
20230407597
2023-12-21

Hydraulic circuit for a construction machine

#38
20230373424
2023-11-23

Restraint systems and restraint system methods

#39
20230311796
2023-10-05

Device for maintaining a hydraulic supply of a utility vehicle

#40
20230303049
2023-09-28

CHECK VALVE AND BRAKE SYSTEM

#41
20230256946
2023-08-17

HYDRAULIC PRESSURE CONTROL UNIT

#42
20230235757
2023-07-27

Radial piston hydraulic device distributing flow by pilot operated check valves and operating method thereof

#43
20230193931
2023-06-22

Hydraulic machine

#44
20230184266
2023-06-15

Arrangement and manipulation system, and method for manipulating the flow of a fluid

#45
20230160400
2023-05-25

Hydraulic system for an industrial truck

#46
20230132067
2023-04-27

Pilot check valve

#47
20230127835
2023-04-27

Inlet section for use in a hydraulic distributor

#48
20230115119
2023-04-13

Roadway energy generation system

#49
20230078504
2023-03-16

IMPROVEMENTS IN, OR RELATING TO, EXHAUST VALVES FOR PRESSURISED FLUID OPERATED DEVICES

#50
20230065490
2023-03-02

IMPROVEMENTS IN, OR RELATING TO, TRIGGER VALVES FOR PRESSURISED FLUID OPERATED DEVICES

#51
20220403860
2022-12-22

Electrohydraulic system for a valve

#52
20220397127
2022-12-15

Hydrostatic cylinder with gas pressure accumulator

#53
20220396468
2022-12-15

VARIABLE FLOW FLUID EXCHANGE MACHINE

#54
20220381336
2022-12-01

Hydraulic assembly for a vehicle transmission

#55
20220372998
2022-11-24

Gasket device and pneumatic valve system for a commercial vehicle

#56
20220364578
2022-11-17

Hydraulic control system

#57
20220333619
2022-10-20

Flow rate controller and drive device

#58
20220316501
2022-10-06

Flow rate controller and drive device equipped with same

#59
20220307527
2022-09-29

SYSTEM TO REDUCE LINE LOSS IN PRESSURE CONTROL HYDRAULIC CIRCUIT

#60
20220307523
2022-09-29

Variable recruitment actuator systems and related methods

#61
20220307230
2022-09-29

Cylinder, hydraulic system, construction machine and procedure

#62
20220282448
2022-09-08

Construction machine

#63
20220154743
2022-05-19

Hydraulic circuit with combined compensation and energy recovery function

#64
20220154737
2022-05-19

Method and apparatus for conversion of a pneumatic actuator to an electric power platform

#65
20220145770
2022-05-12

Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same

#66
20220106969
2022-04-07

HYDRAULIC UNIT WITH PARALLEL PUMPS LINKED TO A SERVOMOTOR AND USE THEREOF

#67
20220056927
2022-02-24

ELECTRIC HYDRAULIC ACTUATOR

#68
20220025912
2022-01-27

Lift arm lifting and lowering mechanism

#69
20210404490
2021-12-30

Compressed-air treatment system and method for operating a compressed-air treatment system

#70
20210404487
2021-12-30

Combined valve, power unit body and hydraulic power unit

#71
20210372439
2021-12-02

Hydraulic system having a drain bypass

#72
20210372438
2021-12-02

Cylinder bypass

#73
20210368669
2021-12-02

Tillage implement having hydraulic down-pressure

#74
20210302259
2021-09-30

Systems and methods for control and monitoring of actuated valves

#75
20210285553
2021-09-16

Open center control valve configured to combine fluid flow received from multiple sources

#76
20210278003
2021-09-09

Check valve assembly having a poppet

#77
20210262493
2021-08-26

Priority flow control valve

#78
20210261077
2021-08-26

Restraint systems and restraint system methods

#79
20210207622
2021-07-08

Flow control valve and hydraulic machine including the same

#80
20210207620
2021-07-08

Valve system for pneumatic cylinders

#81
20210199188
2021-07-01

Hydraulic oil filter system for a motor vehicle transmission

#82
20210180618
2021-06-17

Hydraulic system of working machine

#83
20210131456
2021-05-06

Oil returning valve set with multi-stage throttling control

#84
20210108657
2021-04-15

FLUID CIRCUIT FOR AIR CYLINDERS

#85
20210054854
2021-02-25

Method and apparatus for conversion of single-acting pneumatic actuator to electric power platform

#86
20210033067
2021-02-04

Hydraulic driving system and driving method for barring

#87
20200256355
2020-08-13

Hydraulic device for a rail vehicle

#88
20200240244
2020-07-30

Subsea technology

#89
20200200194
2020-06-25

Downhole tractor comprising an improved hydraulic system

#90
20200182266
2020-06-11

Three position metering valve for a self-contained electro-hydraulic actuator

#91
20200166055
2020-05-28

Bootstrap hydraulic reservoir

#92
20200141429
2020-05-07

A CONTROL VALVE FOR HYDRAULIC LIFTERS

#93
20200141428
2020-05-07

Actuator, valve device, and fluid supply system

#94
20200056634
2020-02-20

Valve system for pneumatic cylinders

#95
20200049266
2020-02-13

Pilot operated blow-off valves for hydraulic actuators

#96
20200018383
2020-01-16

HYDRAULIC TENSIONER WITH MOVING SLEEVE

#97
20200010181
2020-01-09

Aircraft landing gear steering systems and methods with enhanced shimmy protection

#98
20200003234
2020-01-02

SPEED CONTROLLER

#99
20200002919
2020-01-02

Lifting mechanism suspension and lifting mechanism

#100
20190376532
2019-12-12

Hydraulic lock and method for a hydraulic system

#101
20190360603
2019-11-28

Fluid pressure valve

#102
20190323389
2019-10-24

Valve timing adjustment device and check valve

#103
20190271993
2019-09-05

Hydraulic valve with switching regeneration circuit

#104
20190233086
2019-08-01

Aircraft hydraulic system

#105
20190226937
2019-07-25

Systems and methods for control and monitoring of actuated valves

#106
20190226504
2019-07-25

Electrohydraulic actuator

#107
20190224794
2019-07-25

In-port sequence valve

#108
20190203743
2019-07-04

HYDRAULIC NO-BACK DEVICE

#109
20190193704
2019-06-27

Hydraulic failure isolation valve

#110
20190186101
2019-06-20

System for operating a circle drive gear of a machine

#111
20190161983
2019-05-30

Large manipulator with decentralized hydraulic system

#112
20190128436
2019-05-02

Bi-directional inline check valve

#113
20190120371
2019-04-25

Oil pressure supply system of automatic transmission

#114
20190119879
2019-04-25

Hydraulic system for working machine and control valve

#115
20190101138
2019-04-04

Hydraulic system for working machine

#116
20190077425
2019-03-14

RAILWAY VEHICLE VIBRATION DAMPING DEVICE

#117
20190055963
2019-02-21

Hydraulic circuit for controlling a movable component

#118
20190037759
2019-02-07

Sod harvester hydraulic system for actuating components with precise timing

#119
20180320588
2018-11-08

Hydraulic module with switch valve for controlling a hydraulic fluid flow of a connecting rod for an internal combustion engine with variable compression and connecting rod

#120
20180292018
2018-10-11

Reverse flow check valve in hydraulic valve with series circuit

#121
20180291935
2018-10-11

HYDRAULIC DRIVE SYSTEM OF CONSTRUCTION MACHINE

#122
20180282974
2018-10-04

FLUID PRESSURE CONTROL DEVICE

#123
20180274567
2018-09-27

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

#124
20180259130
2018-09-13

Passive diode-like device for fluids

#125
20180252243
2018-09-06

SYSTEMS AND METHODS FOR DYNAMIC RESPONSE ON MOBILE MACHINES

#126
20180202472
2018-07-19

Fluid control device

#127
20180202469
2018-07-19

Hydraulic module for controlling a hydraulic fluid flow of a connecting rod for an internal combustion engine with variable compression and a connecting rod

#128
20180195533
2018-07-12

VALVE SYSTEM FOR PNEUMATIC CYLINDERS

#129
20180192590
2018-07-12

Hydromechanical transmission system for a header of an agricultural harvester

#130
20180187396
2018-07-05

Hydraulic apparatus

#131
20180180189
2018-06-28

Valve system for pneumatic cylinders

#132
20180172153
2018-06-21

Control arrangement for a transmission brake with a quick exhaust valve

#133
20180163854
2018-06-14

Hydraulic control system of automatic transmission for vehicle provided with idle stop and go system

#134
20180163375
2018-06-14

Hydraulic system for working machine

#135
20180156246
2018-06-07

PNEUMATIC ACTUATORS FOR SEVERABLE LINKAGE ASSEMBLIES

#136
20180142710
2018-05-24

Hydraulic drive with rapid stroke and load stroke

#137
20180128354
2018-05-10

Tensioner

#138
20180128289
2018-05-10

Hydraulic circuit with controlled recirculation circuit

#139
20180066681
2018-03-08

HYDRAULIC STABILIZING SYSTEM

#140
20180037447
2018-02-08

Switching valve, switching hydraulic system and crane

#141
20170363115
2017-12-21

Device for the direct recovery of hydraulic energy by means of a single-acting hydraulic cylinder

#142
20170356472
2017-12-14

Hydraulic system of a tool

#143
20170342686
2017-11-30

Control valve for construction equipment

#144
20170306989
2017-10-26

Directional control valve

#145
20170276151
2017-09-28

HYDRAULIC CIRCUIT FOR CONSTRUCTION EQUIPMENT

#146
20170261008
2017-09-14

Speed controller

#147
20170253468
2017-09-07

Hydraulic control circuit for crane slewing gear

#148
20170240019
2017-08-24

Monotube active suspension system having different system layouts for controlling pump flow distribution

#149
20170227027
2017-08-10

Device for relieving pressure in hydraulics lines

#150
20170219101
2017-08-03

Incompressible fluid injection apparatus

#151
20170190249
2017-07-06

LIQUID PRESSURE DRIVE SYSTEM

#152
20170181378
2017-06-29

Improved Accumulator Circuit for Towed Implements

#153
20170159679
2017-06-08

Hydraulic system of work machine and work machine

#154
20170130746
2017-05-11

Device for controlling the flow of a fluid with in-built pressure threshold detection

#155
20170089366
2017-03-30

Hydraulic system of work machine

#156
20170082121
2017-03-23

Valve Manifold with Breather Protection

#157
20170074294
2017-03-16

Flow restricted positioner control apparatus and methods

#158
20170037876
2017-02-09

Fluid pump for a linear actuator

#159
20170002806
2017-01-05

Hydraulic pump assembly for a vehicle

#160
20160318566
2016-11-03

Track tensioner

#161
20160245400
2016-08-25

Hydraulic control apparatus

#162
20160230786
2016-08-11

HYDRAULIC PRESSURE GENERATION UNIT WITH PNEUMATIC ACTUATION

#163
20160230780
2016-08-11

Valve device and hydraulic system

#164
20160153474
2016-06-02

Metering check valve

#165
20160131163
2016-05-12

Hydrostatic Drive For Variable Speed Operation of Rotational Equipment

#166
20160098045
2016-04-07

Aircraft hydraulic valve

#167
20160097462
2016-04-07

Hydraulic valve

#168
20160084279
2016-03-24

Hydraulic drive with rapid stroke and load stroke

#169
20160069428
2016-03-10

Hydraulic system for vehicle

#170
20160061228
2016-03-03

Valve Arrangement for the Hydraulic Circuit of a Work Machine

#171
20160047397
2016-02-18

HYDRAULIC HYBRID SYSTEMS, COMPONENTS, AND CONFIGURATIONS

#172
20160032945
2016-02-04

Hydraulic system for construction machine

#173
20150361995
2015-12-17

Flow control device and flow control method for construction machine

#174
20150275928
2015-10-01

Pump apparatus and hydraulic actuator

#175
20150135701
2015-05-21

Fluid pump for a linear actuator

#176
20150108765
2015-04-23

Mechanical energy storage system and generating method using the same

#177
20150096290
2015-04-09

Hydraulic system

#178
20140318363
2014-10-30

Harmonic uniflow engine

#179
20140305299
2014-10-16

Telescoping fluid porting tube

#180
20130097930
2013-04-25

Aircraft hatch emergency opening actuator including opening delay means

#181
20120279587
2012-11-08

COMPRESSOR SYSTEM WITH RAPID ACCESS VALVE

#182
20120186659
2012-07-26

Fluid control valve systems, fluid systems equipped therewith, and methods of using

#183
20110192474
2011-08-11

Hydraulic control valve for construction machinery

#184
20100307599
2010-12-09

FLUID DEVICE WITH MAGNETIC LATCHING VALVES

#185
20100206405
2010-08-19

PILOT OPERATED CHECK VALVE

#186
20100101223
2010-04-29

Flow compensated restrictive orifice for overrunning load protection

#187
20100077972
2010-04-01

Crankcase pressure regulator for an internal combustion engine

#188
20050217265
2005-10-06

Hydraulic system

#189
20050211303
2005-09-29

Bi-directional damper valve for a hydraulic line, power steering system incorporating the damper valve, and methods of using same

#190
18747811
2025-08-19

Vacuum assisted line bleeding

#191
18207768
2023-12-26

Screw-pump type electro-hydraulic actuator

#192
17688930
2023-04-11

Single solenoid-controlled electro-hydraulic liftomatic system

#193
17589949
2023-03-07

Pressure compensation valve with load-sense fluid signal generation and a reverse free flow configuration integrated therewith

#194
17589947
2023-06-20

Sequence valve with a reverse free flow configuration integrated therewith

#195
17300544
2023-10-24

Hydraulic pump to synchronize the operation of a pair of hydraulic actuators

#196
16246921
2020-09-15

Proportional fluid flow control valve having a built-in check valve and configured to generate a pilot signal

#197
16044149
2020-02-04

Hydraulic cylinder arrangement with automatic air bleeding and fluid flushing features