ClassID:

146155

F15B21/008 - CPC Classification

Classification description:

Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass Reduction of noise or vibration

Recent Application in this class:
#1
20250369461
2025-12-04

SELF-PROPELLED AGRICULTURAL HARVESTER

#2
20250297459
2025-09-25

MOVABLE ARM DAMPING SYSTEM FOR LOADING MACHINE AND LOADING MACHINE

#3
20250257746
2025-08-14

METHOD FOR REAL-TIME HYDRAULIC CYLINDER DRIFT MONITORING

#4
20250100700
2025-03-27

Fluid-filled thrust link apparatus and associated method

#5
20250092700
2025-03-20

LOW FREQUENCY NOISE REDUCTION METHODS AND DEVICES

#6
20240360852
2024-10-31

COUPLING STRUCTURE OF BALL NUT AND DAMPER AND HYDRAULIC SUPPLY APPARATUS EMPLOYING THE SAME

#7
20240326544
2024-10-03

HYDRAULICS CONSTRUCTION KIT

#8
20240318715
2024-09-26

Working fluid stabilization device for agricultural work vehicle

#9
20240318675
2024-09-26

Method and Application for Eliminating Gaseous Cavitation

#10
20240239188
2024-07-18

METHOD FOR CONTROLLING A GEAR PUMP

#11
20240139567
2024-05-02

LOW PRESSURE DROP ACOUSTIC SUPPRESSOR NOZZLE FOR INERT GAS DISCHARGE SYSTEM

#12
20230296116
2023-09-21

Unloading valve and combined valve type buffer cylinder

#13
20230288009
2023-09-14

DEVICE AND METHOD FOR ACTIVELY REDUCING PRESSURE VARIATIONS IN A HYDRODYNAMIC SYSTEM

#14
20230235536
2023-07-27

DAMPING SYSTEM FOR MOVABLE ARM OF LOADING MACHINE AND OPERATION MACHINERY

#15
20230184366
2023-06-15

Device for influencing, in particular reducing, vibrations in a fluid system, and method for influencing, in particular reducing, vibrations in a fluid system

#16
20230160178
2023-05-25

Method for damping a movably mounted attachment part of a machine and the machine

#17
20230103970
2023-04-06

Method for operating an electric motor, delivery pump, motor vehicle having a delivery pump of said type, computer program, and computer-readable medium

#18
20230078880
2023-03-16

Pneumatic actuator

#19
20230059303
2023-02-23

Actuator device and method for operating an actuator device of this type

#20
20230040307
2023-02-09

Submersible hydraulic power units with interchangeable manifolds

#21
20220412382
2022-12-29

TWIN CHAMBER AIR DRYER AND PNEUMATIC SYSTEM

#22
20220403859
2022-12-22

Electronic pump and methods of using the same

#23
20220380028
2022-12-01

Tail-rotor vibration dampener system

#24
20220373003
2022-11-24

DIFFERENTIAL HYDRAULIC BUFFER

#25
20220364326
2022-11-17

System and device for anticipating and correcting for over-center transitions in mobile hydraulic machine

#26
20220332298
2022-10-20

Noise mitigating hydraulic control unit assembly for a vehicle braking system

#27
20220305310
2022-09-29

Low pressure drop acoustic suppressor nozzle for inert gas discharge system

#28
20220252130
2022-08-11

Actuator and heat store for actuator

#29
20220252090
2022-08-11

System with motion sensors for damping mass-induced vibration in machines

#30
20220252085
2022-08-11

Electro-hydraulic servo-valves and related methods

#31
20210341001
2021-11-04

Pilot control mechanism for boom bounce reduction

#32
20210301837
2021-09-30

Motor operated accumulator

#33
20210262199
2021-08-26

System and device for anticipating and correcting for over-center transitions in mobile hydraulic machine

#34
20210207753
2021-07-08

Damping device

#35
20210207627
2021-07-08

Control device

#36
20210199206
2021-07-01

Valve

#37
20210182448
2021-06-17

METHOD FOR CALCULATING PRESSURE LOSS OF SERIES R-TYPE AUTOMOBILE VIBRATION DAMPER

#38
20210172463
2021-06-10

Apparatus and method for active vehicle suspension

#39
20210164502
2021-06-03

Attenuation device for the fluid flow pulsation in a hydraulic circuit connected with a hydraulic machine

#40
20210025412
2021-01-28

Damping device

#41
20210010206
2021-01-14

Tamping assembly for a track tamping machine

#42
20200386291
2020-12-10

Brake system damping device

#43
20200355203
2020-11-12

AIR CYLINDER FLUID CIRCUIT AND METHOD FOR DESIGNING SAME

#44
20200318661
2020-10-08

Method for operating a hydraulic valve of a hydraulic device of a motor vehicle transmission device as well as a motor vehicle transmission device

#45
20200254990
2020-08-13

Brake control device for vehicle

#46
20200248720
2020-08-06

Hydraulic system and method for reducing boom bounce with counter-balance protection

#47
20200200195
2020-06-25

Method for controlling a movement of a movably mounted body of a mechanical system

#48
20200124062
2020-04-23

System with motion sensors for damping mass-induced vibration in machines

#49
20200124060
2020-04-23

System for damping mass-induced vibration in machines having hydraulically controlled booms or elongate members

#50
20200114185
2020-04-16

Low pressure drop acoustic suppressor nozzle for fire protection inert gas discharge system

#51
20200069856
2020-03-05

Pneumatic system having noise reduction features for a medical fluid machine

#52
20200032820
2020-01-30

Pilot control mechanism for boom bounce reduction

#53
20200022300
2020-01-23

System for controlling the operation of an actuator mounted on a seed planting implement

#54
20200003239
2020-01-02

Methods and apparatus to enable boom bounce reduction and prevent un-commanded motion in hydraulic systems

#55
20190373799
2019-12-12

Method for vibration damping for hydraulic lifting mechanisms of mobile working machines and hydraulic lifting mechanism having vibration damping

#56
20190366999
2019-12-05

Method and device for controlling a hydraulic brake system

#57
20190203744
2019-07-04

Reduced noise reciprocating pneumatic motor

#58
20190203739
2019-07-04

Motor operated accumulator

#59
20190161983
2019-05-30

Large manipulator with decentralized hydraulic system

#60
20190128295
2019-05-02

Regulator for clutch operating mechanism

#61
20190128294
2019-05-02

Damping device for clutch actuating device

#62
20190077425
2019-03-14

RAILWAY VEHICLE VIBRATION DAMPING DEVICE

#63
20190048899
2019-02-14

Hydraulic device that controls pulsation in first oil by increasing rotation number of second pump

#64
20190040883
2019-02-07

Method and cavity for suppression of cavity flow oscillations and acoustic loads using curved rear face

#65
20190017469
2019-01-17

Actuator for use in aircraft

#66
20180321079
2018-11-08

Oil vibration diagnosis apparatus and oil vibration diagnosis method

#67
20180306215
2018-10-25

Damping device

#68
20180304873
2018-10-25

Hydraulic unit

#69
20180283567
2018-10-04

Vent assembly and method for a digital valve positioner

#70
20180272167
2018-09-27

Low pressure drop acoustic suppressor nozzle for inert gas discharge system

#71
20180272166
2018-09-27

Low pressure drop acoustic suppressor nozzle for fire protection inert gas discharge system

#72
20180180066
2018-06-28

Apparatus and methods for the control of hydraulic actuators

#73
20180163372
2018-06-14

WORK VEHICLE

#74
20180156243
2018-06-07

Hydraulic system and method for reducing boom bounce with counter-balance protection

#75
20180112375
2018-04-26

Material handling machine with ride control system and method

#76
20180094657
2018-04-05

Damping device

#77
20180045353
2018-02-15

Damping device

#78
20180023636
2018-01-25

Vibration damper for a hydraulic clutch actuator

#79
20170356585
2017-12-14

Damping device

#80
20170248173
2017-08-31

Device for reducing vibrations in a hydraulic actuating system, particularly hydraulic clutch actuating system for motor vehicles

#81
20170218985
2017-08-03

Reducing noise double-channel oil pump

#82
20170217416
2017-08-03

Brake system

#83
20170204886
2017-07-20

Methods and apparatus to enable boom bounce reduction and prevent un-commanded motion in hydraulic systems

#84
20170189592
2017-07-06

Pressure manifold system for dialysis

#85
20170159679
2017-06-08

Hydraulic system of work machine and work machine

#86
20170114525
2017-04-27

Hydraulic system having automatic ride control

#87
20170074297
2017-03-16

LOW NOISE CONTROL ALGORITHM FOR HYDRAULIC SYSTEMS

#88
20170037600
2017-02-09

DRIVE CONTROL DEVICE FOR CONSTRUCTION EQUIPMENT AND CONTROL METHOD THEREFOR

#89
20170002844
2017-01-05

Electro hydrostatic actuators

#90
20160363239
2016-12-15

Automatic transmission control valve body structure

#91
20160298719
2016-10-13

Control strategy for reducing boom oscillation

#92
20160298660
2016-10-13

Pilot control mechanism for boom bounce reduction

#93
20160108936
2016-04-21

Hydraulic system and method for reducing boom bounce with counter-balance protection

#94
20160091003
2016-03-31

Micro dampers for prevention of un-commanded motion in mechanical feedback actuators

#95
20160070272
2016-03-10

Solenoid valve control system, a control valve system, and a method of controlling electronic valve

#96
20160053781
2016-02-25

HYDRAULIC SYSTEM WITH SUPPRESSOR UNIT

#97
20160024745
2016-01-28

Snubber for machine

#98
20150375966
2015-12-31

Noise Abatement for Elevator Submersible Power Units

#99
20150316158
2015-11-05

Vent assembly and method for a digital valve positioner

#100
20150316077
2015-11-05

Method for operating a hydraulic device with pump and servomotor, and associated hydraulic device

#101
20150165108
2015-06-18

Pressure manifold system for dialysis

#102
20150047404
2015-02-19

Vibration damping system by means of a hydraulic actuation system

#103
20150020517
2015-01-22

HIGH-PRESSURE HOSE VIBRATION SUPPRESSOR

#104
20140196627
2014-07-17

Railcar damping device

#105
20140076681
2014-03-20

Slave cylinder for a vibration-damped hydraulic force transmission system, particularly a hydraulic clutch actuating system for motor vehicles

#106
20140026548
2014-01-30

METHOD AND A DEVICE FOR REDUCING VIBRATIONS IN A WORKING MACHINE

#107
20130277306
2013-10-24

Noise-reducing dialysis systems and methods of reducing noise in dialysis systems

#108
20130263952
2013-10-10

Oil passage change-over valve

#109
20130209276
2013-08-15

Hydraulic control system

#110
20130206255
2013-08-15

HYDRAULIC LOW-PASS FILTER FOR PRESSURE SENSORS

#111
20130058802
2013-03-07

Low ice pneumatic motor exhaust muffler

#112
20120155999
2012-06-21

Travel vibration suppressing device of work vehicle

#113
20120060682
2012-03-15

Volume booster with reduced noise trim

#114
20120000543
2012-01-05

METHOD AND DEVICE FOR ACTIVELY SUPPRESSING PRESSURE OSCILLATIONS IN A HYDRAULIC SYSTEM

#115
20110303315
2011-12-15

Device for reducing pressure pulsations

#116
20110302976
2011-12-15

METHOD AND APPARATUS FOR SEMIACTIVE REDUCTION OF PRESSURE OSCILLATIONS IN A HYDRAULIC SYSTEM

#117
20110179783
2011-07-28

Device to actively control the vibrations of an articulated arm to pump concrete

#118
20110163033
2011-07-07

Noise-reducing dialysis systems and methods of reducing noise in dialysis systems

#119
20110067763
2011-03-24

Configurable active jerk control

#120
20110036083
2011-02-17

Hydraulic system with a pressure ripple reduction device

#121
20100288388
2010-11-18

DUCT PROVIDED WITH A DEVICE FOR ABSORPTION OF PRESSURE PULSES

#122
20100212490
2010-08-26

Control apparatus and control method for a piston/cylinder arrangement

#123
20100181158
2010-07-22

Slave cylinder for a vibration-damped hydraulic force transmission system, particularly a hydraulic clutch actuating system for motor vehicles

#124
20100132798
2010-06-03

Control valve actuation

#125
20100048340
2010-02-25

Automatic transmission damper mechanism

#126
20100018199
2010-01-28

Device for reducing hydraulic-fluid oscillation in a hydraulic system

#127
20090308062
2009-12-17

Hydraulic steering system and method

#128
20090288906
2009-11-26

Hydraulic power steering system

#129
20090266643
2009-10-29

Silencer

#130
20090260701
2009-10-22

Pulsation attenuator for a fluidic system

#131
20090236002
2009-09-24

Hydro sound damper, in particular for integration in an aircraft hydraulic system

#132
20090112151
2009-04-30

Dialysis system having integrated pneumatic manifold

#133
20090000291
2009-01-01

Arrangement and method for delivering hydraulic fluid in a work vehicle

#134
20080243274
2008-10-02

Control method and controller for a mechanohydraulic system

#135
20080210486
2008-09-04

Energy attenuation device

#136
20080210108
2008-09-04

Plunger-cylinder assembly

#137
20080156379
2008-07-03

Pulsation attenuator for a fluidic system

#138
20080155977
2008-07-03

Apparatus for easing impact on boom of excavator and method of controlling the same

#139
20080078286
2008-04-03

Quiet fluid supply valve

#140
20070295415
2007-12-27

Device for reducing hydraulic fluid oscillations in a hydraulic system

#141
20070289298
2007-12-20

Suspension arrangement for a boom assembly mounted on an agricultural sprayer

#142
20070130934
2007-06-14

Hydraulic control system

#143
20070130933
2007-06-14

Vibration control method and vibration control system for fluid pressure control circuit

#144
20070125436
2007-06-07

Pulsation attenuator for a fluidic system

#145
20070059146
2007-03-15

Loading implement

#146
20070056277
2007-03-15

Travel vibration suppressing device for working vehicle

#147
20070033933
2007-02-15

Hydraulic arrangement

#148
20060272325
2006-12-07

Control system for suppression of boom or arm oscillation

#149
20060266032
2006-11-30

Hydraulic system

#150
20060243552
2006-11-02

Valve arrangement for vibration decoupling, which can be connected between a master cylinder and a slave cylinder of a hydraulic force transmission system

#151
20060243335
2006-11-02

Automotive automatic transmission noise attenuators

#152
20060225944
2006-10-12

Multiple channel conduit hydraulic noise attenuation device

#153
20060179831
2006-08-17

Semi-active ride control for a mobile machine

#154
20060130919
2006-06-22

Device for attenuating pressure oscillations in hydraulic lines

#155
20060037645
2006-02-23

Hydraulic power steering valve housing

#156
20060011875
2006-01-19

Hydraulically controlled valve comprising at least one hydraulic drive unit

#157
20050262840
2005-12-01

Hydraulic actuation apparatus for a motor vehicle clutch

#158
20050229776
2005-10-20

Pneumatic cylinder for precision servo type applications

#159
20050217265
2005-10-06

Hydraulic system

#160
20050183777
2005-08-25

Valve, especially a damping valve for a vibration damper

#161
20050098326
2005-05-12

Hydraulic circuit for hydraulic cylinder

#162
20050086934
2005-04-28

Hydraulic cylinder

#163
20050081519
2005-04-21

System for preventing swing wag for a work machine with a boom assembly

#164
20050072474
2005-04-07

Valve assembly for attenuating bounce of hydraulically driven members of a machine

#165
20050056331
2005-03-17

Device for damping pressure pulsations and a hydraulic unit equipped with this device

#166
20050011190
2005-01-20

Hydraulic active boom suspension for a telehandler

#167
17672970
2023-06-20

Ride control valve

#168
16001804
2020-12-01

Apparatus and method for active vehicle suspension