ClassID:

145984

F15B13/021 - 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 Valves for interconnecting the fluid chambers of an actuator

Recent Application in this class:
#1
20250236258
2025-07-24

HYDRAULIC SYSTEM AND PASSENGER RESTRAINT SYSTEM

#2
20240083580
2024-03-14

AIRCRAFT STORE EJECTOR SYSTEM

#3
20240068491
2024-02-29

Automatic oil return structure for piston pump

#4
20240052599
2024-02-15

Multi-control valve

#5
20230272808
2023-08-31

PRESSURIZED FLUID SUPPLY SYSTEM

#6
20230094670
2023-03-30

Aircraft store ejector system

#7
20220361394
2022-11-17

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

#8
20220260095
2022-08-18

VALVE BLOCK, SECURING ELEMENT, VALVE UNIT, METHOD FOR PRODUCING A VALVE BLOCK, AND METHOD FOR PRODUCING A SECURING ELEMENT

#9
20220234709
2022-07-28

Steering device, steering device for ship and switching valve

#10
20220194564
2022-06-23

Aircraft hydraulic actuation system with chambers for hydraulic fluid

#11
20220097851
2022-03-31

Aircraft store ejector system

#12
20220071089
2022-03-10

Controlled float on an agricultural harvester for header leveling

#13
20210372438
2021-12-02

Cylinder bypass

#14
20210285553
2021-09-16

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

#15
20210239138
2021-08-05

Hydraulic pressure amplifier arrangement

#16
20210215070
2021-07-15

Recirculating hydraulic fluid control valve

#17
20210206443
2021-07-08

Telescopic apparatus for human-powered vehicle

#18
20210148087
2021-05-20

Boom potential energy recovery of hydraulic excavator

#19
20210088146
2021-03-25

Hydraulic control valve unit

#20
20210071391
2021-03-11

Construction machine

#21
20210002864
2021-01-07

Boom potential energy recovery of hydraulic excavator

#22
20200362884
2020-11-19

Hydraulic system for working machine

#23
20200337240
2020-10-29

Controlled float on an agricultural harvester for header leveling

#24
20200299932
2020-09-24

Regeneration valve for a hydraulic circuit

#25
20200290738
2020-09-17

Aircraft store ejector system

#26
20200229601
2020-07-23

OVERTURN PREVENTING DEVICE

#27
20200224680
2020-07-16

Solenoid valve system

#28
20200190770
2020-06-18

Stick control system in construction machine

#29
20200141429
2020-05-07

A CONTROL VALVE FOR HYDRAULIC LIFTERS

#30
20190376533
2019-12-12

Actuator limit controller

#31
20190309772
2019-10-10

Automatically actuated shunt valve system

#32
20190292752
2019-09-26

Boom potential energy recovery of hydraulic excavator

#33
20190285094
2019-09-19

Hydraulic drive with fast stroke and load stroke

#34
20190277411
2019-09-12

Hydraulic control valve unit

#35
20190271993
2019-09-05

Hydraulic valve with switching regeneration circuit

#36
20190242482
2019-08-08

Integrated valve for a legged robot

#37
20190178266
2019-06-13

Servo control, rotor and aircraft

#38
20190136880
2019-05-09

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

#39
20190077425
2019-03-14

RAILWAY VEHICLE VIBRATION DAMPING DEVICE

#40
20190063475
2019-02-28

Actuator cooling flow limiter

#41
20190063042
2019-02-28

Hydraulic control system of leveling oil cylinder of loading head

#42
20190061918
2019-02-28

ELECTRIC HYDRAULIC ACTUATION SYSTEM FOR A SAFETY CRITICAL APPLICATION

#43
20190017522
2019-01-17

Synchronizing cylinder for extruder

#44
20190003495
2019-01-03

Harvester head reel rephasing

#45
20180372239
2018-12-27

Interlocking solenoid valve assembly and method

#46
20180274567
2018-09-27

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

#47
20180274209
2018-09-27

Hydraulic system for working machine

#48
20180252243
2018-09-06

SYSTEMS AND METHODS FOR DYNAMIC RESPONSE ON MOBILE MACHINES

#49
20180245607
2018-08-30

Pressure regulation servo-valve with reduced leakage flow rate

#50
20180237095
2018-08-23

TWO-WHEEL SUSPENSION MECHANISM

#51
20180216317
2018-08-02

Boom potential energy recovery of hydraulic excavator

#52
20180180068
2018-06-28

Hydraulic system for working machine

#53
20180172085
2018-06-21

SYSTEM AND METHOD FOR CLUTCH ACTUATION HAVING ELECTRONIC CLUTCH ACTUATOR WITH MANUAL OPERATION

#54
20180156244
2018-06-07

Split spool valve

#55
20180100522
2018-04-12

Hydraulic control valve for controlling pressure drop across motors

#56
20180073219
2018-03-15

HYDRAULIC APPARATUS OF CONSTRUCTION EQUIPMENT AND CONTROL METHOD THEREFOR

#57
20180037447
2018-02-08

Switching valve, switching hydraulic system and crane

#58
20170364102
2017-12-21

Hydraulic control valve with controlled flow and valve safety disable

#59
20170363115
2017-12-21

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

#60
20170327227
2017-11-16

Aircraft store ejector system

#61
20170306990
2017-10-26

ENERGY SAVING DIRECTIONAL-CONTROL VALVES FOR PROVIDING INPUT-OUTPUT COMPATIBILITY WITH STANDARD NON-ENERGY SAVING DIRECTIONAL-CONTROL VALVES

#62
20170219106
2017-08-03

Integrated valve for a legged robot

#63
20170130745
2017-05-11

Valve having right-angle proportional and directional pilot actuators

#64
20170130744
2017-05-11

System and method for hydraulic energy recovery

#65
20170130739
2017-05-11

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

#66
20170089365
2017-03-30

Actuator limit controller

#67
20170016460
2017-01-19

DEVICE FOR CONTROLLING REGENERATED FLOW RATE FOR CONSTRUCTION MACHINE AND METHOD FOR CONTROLLING SAME

#68
20160356020
2016-12-08

Control system for construction machinery and control method for construction machinery using the same

#69
20160333551
2016-11-17

Hydraulic circuit for construction machinery having floating function and method for controlling floating function

#70
20160332854
2016-11-17

Hydraulic control device of a forklift truck

#71
20160251831
2016-09-01

Flow control valve for construction equipment, having floating function

#72
20160230786
2016-08-11

HYDRAULIC PRESSURE GENERATION UNIT WITH PNEUMATIC ACTUATION

#73
20160222633
2016-08-04

CONSTRUCTION MACHINE FLOAT VALVE

#74
20160177978
2016-06-23

THROTTLE VALVE

#75
20160160885
2016-06-09

HYDRAULIC CIRCUIT FOR AN ACTUATOR

#76
20160025114
2016-01-28

Actuator limit controller

#77
20160001889
2016-01-07

HYDRAULICALLY ACTUATED MECHANICAL LOCK ASSEMBLY

#78
20150354605
2015-12-10

Construction machine

#79
20150300383
2015-10-22

Passive piston hydraulic device with partition

#80
20150219124
2015-08-06

HYDRAULIC CONTROL DEVICE USING HYDRAULIC ACTUATOR

#81
20150184680
2015-07-02

Torque limit control

#82
20150176613
2015-06-25

Hydraulic axle

#83
20150175141
2015-06-25

Cylinder device

#84
20150167699
2015-06-18

Switching valve

#85
20150159678
2015-06-11

Flow control valve for construction machinery

#86
20150125295
2015-05-07

Wind turbine load mitigation

#87
20150121860
2015-05-07

Hydraulic drive circuit

#88
20150113970
2015-04-30

Hydraulic system for construction machinery

#89
20150108765
2015-04-23

Mechanical energy storage system and generating method using the same

#90
20150096619
2015-04-09

Hydraulic valve assembly with tank return flow compensation

#91
20150096291
2015-04-09

Fluid pressure control device

#92
20150075640
2015-03-19

Pneumatic valve assembly and method

#93
20150040558
2015-02-12

Pneumatic booster and brake system

#94
20150018171
2015-01-15

CONTROL DEVICE AND CONTROL METHOD FOR SOLENOID VALVE

#95
20150013320
2015-01-15

Hydraulic drive system

#96
20140325974
2014-11-06

Hydraulic hybrid system for rotatory applications

#97
20140245732
2014-09-04

Proportional directional control valve, and hydraulic circuit and hydropneumatic suspension system having such a valve

#98
20140245730
2014-09-04

Priority control system for construction machine

#99
20140190158
2014-07-10

Hydraulic circuit, and combination valve used in same hydraulic circuit

#100
20140076156
2014-03-20

Aircraft store ejector system

#101
20140026546
2014-01-30

Regeneration Valve for a Hydraulic Circuit

#102
20130340744
2013-12-26

Solar generator and hydraulic control seat valve

#103
20120324874
2012-12-27

Independent supply and exhaust metering within a valve casting

#104
20120037251
2012-02-16

Fluidic System

#105
20110192157
2011-08-11

Cylinder device

#106
20100224060
2010-09-09

Actuator controller

#107
20100083651
2010-04-08

Circuit for controlling a double-action hydraulic drive cylinder

#108
20100043901
2010-02-25

Hydraulic apparatus having an axially actuatable bypass valve

#109
20090101854
2009-04-23

Hydraulic control valve for heavy equipment

#110
20090014074
2009-01-15

Hydraulic valve arrangement

#111
20090000468
2009-01-01

Procedure for the loading of a working cylinder, control module for it, working cylinder and utilization of the same

#112
20070289437
2007-12-20

Adjustable hydraulic support cylinder

#113
20070169471
2007-07-26

Vehicle steering mechanism

#114
20060081299
2006-04-20

Hydraulic control valve with regeneration function

#115
20060025269
2006-02-02

Hydraulic linear drive of a transmission actuator

#116
20050126166
2005-06-16

Anti-reaction valve device, and control unit and hydraulically powered system comprising anti-reaction valve device

#117
20050061574
2005-03-24

Power steering system

#118
20050056078
2005-03-17

Multi-purpose hydraulic tool

#119
20050011190
2005-01-20

Hydraulic active boom suspension for a telehandler

#120
18055244
2023-09-19

Automatic oil return structure for piston pump

#121
17565477
2022-12-06

Hydraulic power generating system

#122
15731294
2020-02-04

Direct link circuit