ClassID:

146015

F15B13/0433 - 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 for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being pressure control valves

Recent Application in this class:
#1
20250354353
2025-11-20

Method of Controlling a Swing System of a Work Machine

#2
20250207683
2025-06-26

Valve

#3
20250163941
2025-05-22

Valve

#4
20250129804
2025-04-24

THROTTLE DEVICE, FLUID DEVICE AND FLUID SYSTEM

#5
20240271642
2024-08-15

Vavle

#6
20240255008
2024-08-01

HYDRAULIC CONTROL SYSTEM AND METHOD WITH ELECTRO-PROPORTIONAL PRESSURE VALVE AND INTEGRAL CHECK

#7
20240191813
2024-06-13

MULTIFUNCTIONAL ELECTRO-HYDRAULIC FLOW CONTROL VALVE AND FLOW CONTROL METHOD

#8
20240159254
2024-05-16

Systems and Methods for Pressure Control

#9
20230400042
2023-12-14

Servo valve flapper and nozzle structure

#10
20230175536
2023-06-08

Control device and hydraulic system including the same

#11
20230167834
2023-06-01

Eliminating bleed on flow controls

#12
20230078399
2023-03-16

Valve calibration system and calibration method

#13
20230013888
2023-01-19

Multi-control valve device

#14
20220364329
2022-11-17

Hydraulic system of construction machine

#15
20220228608
2022-07-21

Fluid pressure control device

#16
20220196040
2022-06-23

Servo valve flapper and nozzle structure

#17
20220120295
2022-04-21

Drive device for hydraulic cylinder in work machine

#18
20220025914
2022-01-27

System, valve assembly, and methods for oscillation control of a hydraulic machine

#19
20210254638
2021-08-19

Hydraulic control system and method with electro-proportional pressure valve and integral check

#20
20210231135
2021-07-29

Electronically adjustable pressure compensated flow control with pressure limiting relief valve

#21
20210207622
2021-07-08

Flow control valve and hydraulic machine including the same

#22
20210032851
2021-02-04

Electrohydraulic control device for construction machine and method thereof

#23
20210010491
2021-01-14

Seismic vibrator servo valve with proportional linear pressure feedback

#24
20200354923
2020-11-12

Material moving machines and pilot hydraulic switching systems for use therein

#25
20200337239
2020-10-29

Damped float response on an agricultural harvester

#26
20200309284
2020-10-01

Spool servo valve

#27
20200309162
2020-10-01

Pilot device for a directional valve without internal cable connections

#28
20200158143
2020-05-21

Hydraulic system

#29
20200143970
2020-05-07

Electromagnetic actuator and hydraulic pressure adjustment mechanism

#30
20200032778
2020-01-30

Servo regulator

#31
20190352883
2019-11-21

Construction machine

#32
20190309771
2019-10-10

Hydraulic fluid circuit with fixed minimum back pressure

#33
20190277313
2019-09-12

Valve device

#34
20190211531
2019-07-11

Hydraulic drive system of construction machine

#35
20190195245
2019-06-27

Servo valve

#36
20190186511
2019-06-20

Leakage modulation in hydraulic systems containing a three-way spool valve

#37
20190128290
2019-05-02

Method for improving electro-hydraulic system response

#38
20190101943
2019-04-04

Relay valve and force balancing method

#39
20190100900
2019-04-04

Hydraulic system for working machine

#40
20190063469
2019-02-28

Direct input pilot operated servo valve

#41
20190048900
2019-02-14

Pneumatic servovalve assembly

#42
20190032683
2019-01-31

Generating two pneumatic signals to operate an actuator on a valve assembly

#43
20180298923
2018-10-18

Fluid control device and method for operating a fluid control device

#44
20180281591
2018-10-04

SEMI-INDEPENDENT AUTOMATED CLUTCH SYSTEM FOR A MANUAL TRANSMISSION

#45
20180180069
2018-06-28

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

#46
20180065834
2018-03-08

Crane

#47
20180045227
2018-02-15

Fluid valve assembly and a process valve positioner

#48
20170328383
2017-11-16

Valve arrangement

#49
20170321730
2017-11-09

Device mounting structure

#50
20170284064
2017-10-05

Construction machine

#51
20170227026
2017-08-10

Hydraulic servo valve

#52
20170215329
2017-08-03

System for controlling the supply of hydraulic fluid to a work vehicle implement

#53
20170114806
2017-04-27

Flow control valve for construction equipment

#54
20170107696
2017-04-20

Work machine

#55
20160327166
2016-11-10

Solenoid valve

#56
20160230832
2016-08-11

Damping valve

#57
20160153475
2016-06-02

Discrete pilot stage valve arrangement with fail freeze mode

#58
20160002886
2016-01-07

Pilot pressure control system

#59
20150260302
2015-09-17

Dual/variable gain oil pump control valve

#60
20150198182
2015-07-16

Electrohydraulic control valve

#61
20150123022
2015-05-07

Electronic deadman/autoshear circuit

#62
20150096619
2015-04-09

Hydraulic valve assembly with tank return flow compensation

#63
20150090354
2015-04-02

Pilot-operated spool valve

#64
20140312250
2014-10-23

Flow regulating valve subassembly

#65
20140225016
2014-08-14

Pilot-control stage for a proportionally controlled high-pressure hydraulic valve

#66
20140174751
2014-06-26

System and method for high speed hydraulic actuation

#67
20140083538
2014-03-27

Electrohydraulic control valve

#68
20140026746
2014-01-30

Volume booster with stabilized trim

#69
20140014206
2014-01-16

Two-stage air control valve

#70
20140008555
2014-01-09

Proportional control valve

#71
20130297045
2013-11-07

Auto-tuning electro-hydraulic valve

#72
20130255809
2013-10-03

Valve, in particular pilot-operated proportional pressure control valve

#73
20130221253
2013-08-29

Servo valve

#74
20120303141
2012-11-29

Auto-tuning electro-hydraulic valve

#75
20120248363
2012-10-04

Pilot relay

#76
20120247594
2012-10-04

Pilot relay

#77
20120205565
2012-08-16

Dampened hydraulic pilot control arrangement for a spool valve

#78
20120199769
2012-08-09

Mesofluidic two stage digital valve

#79
20120145252
2012-06-14

Micromachined Device and Control Method

#80
20120085437
2012-04-12

Volume booster with seat load bias

#81
20120061606
2012-03-15

Volume booster with variable asymmetry

#82
20120061594
2012-03-15

Volume booster with stabilized trim

#83
20120060952
2012-03-15

Volume booster with discrete capacity adjustment

#84
20120060682
2012-03-15

Volume booster with reduced noise trim

#85
20120024531
2012-02-02

Autochoke system

#86
20120000353
2012-01-05

Directional control valve, particularly for controlling an actuating cylinder of a turbo-machine

#87
20110297856
2011-12-08

Proportional pressure control valve

#88
20110271669
2011-11-10

Hybrid construction machine

#89
20110039646
2011-02-17

Hydraulic system for actuating at least two valves

#90
20110030816
2011-02-10

CONTROL SYSTEM FOR CONTROLLING A DIRECTIONAL CONTROL VALVE

#91
20100300828
2010-12-02

Dual-Stage Regulator Valve Assembly

#92
20100258192
2010-10-14

Method for actuating a hydraulic servo system

#93
20100200090
2010-08-12

Spool valve

#94
20100155633
2010-06-24

Poppet valve operated by an electrohydraulic poppet pilot valve

#95
20090312852
2009-12-17

Auto-tuning electro-hydraulic valve

#96
20090212244
2009-08-27

Pilot operated valve with fast closing poppet

#97
20090159389
2009-06-25

Clutch end-of-fill detection strategy

#98
20090114298
2009-05-07

Valve control unit

#99
20090093338
2009-04-09

Hydraulic control unit

#100
20090050222
2009-02-26

Three-way poppet valve with intermediate pilot port

#101
20090044872
2009-02-19

Control device and hydraulic pilot control

#102
20090032746
2009-02-05

Piezo-electric actuated valve

#103
20090025378
2009-01-29

Hydraulic actuator control system for refuse collection vehicle

#104
20080295508
2008-12-04

Force feedback poppet valve having an integrated pressure compensator

#105
20080230127
2008-09-25

Actuator position control device using a fail freeze servo-valve

#106
20080216902
2008-09-11

First-stage pilot valve

#107
20080115848
2008-05-22

Valve, especially proportional pressure control valve

#108
20080072749
2008-03-27

Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve

#109
20080047617
2008-02-28

Hydraulic control apparatus

#110
20080017261
2008-01-24

Proportional pressure control valve

#111
20070295924
2007-12-27

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

#112
20070181196
2007-08-09

Spool valve

#113
20070157979
2007-07-12

Fluid-control system

#114
20070144588
2007-06-28

Spool activated lock-out valve for a hydraulic actuator load check valve

#115
20070045585
2007-03-01

Hydraulic flow control valve with flow rate setting adjustability

#116
20070045579
2007-03-01

Fluid operated position regulator

#117
20070044649
2007-03-01

Metering valve with integral relief and makeup function

#118
20070033933
2007-02-15

Hydraulic arrangement

#119
20070028760
2007-02-08

Pressure control system for a torque-transmitting mechanism

#120
20070022871
2007-02-01

Electro-hydraulic metering valve with integral flow control

#121
20060263189
2006-11-23

SYSTEM AND A METHOD FOR MOVING AN IMPLEMENT OF A VEHICLE

#122
20060130914
2006-06-22

Position feedback pilot valve actuator for a spool control valve

#123
20060117942
2006-06-08

Hydraulic control circuit and method thereof

#124
20060086395
2006-04-27

Electromagnetic pilot type directional control valve

#125
20060065867
2006-03-30

Electronically and hydraulically-actuated drain value

#126
20050173008
2005-08-11

Proportional pressure control valve

#127
20050087242
2005-04-28

Proportional pressure control valve

#128
20050072954
2005-04-07

Hydraulic valve arrangement

#129
14781454
2018-05-15

Pre-tensioning-pre-twisting full-bridge 2D electro-hydraulic proportional directional valve