ClassID:

146358

F15B2211/50527 - CPC Classification

Classification description:

Circuits for servomotor systems; Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves using cross-pressure relief valves

Recent Application in this class:
#1
20260078778
2026-03-19

PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS

#2
20260028797
2026-01-29

HYDRAULIC MACHINE SWING SYSTEM WITH ANTI-DRIFT

#3
20250012299
2025-01-09

PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS

#4
20220136535
2022-05-05

Hydraulic circuit including hydraulic decompression energy reclamation

#5
20200049266
2020-02-13

Pilot operated blow-off valves for hydraulic actuators

#6
20180370775
2018-12-27

Offshore crane heave compensation control system and method using visual ranging

#7
20180299009
2018-10-18

Pressure limiting device, in particular for a hydraulic assist system for vehicles

#8
20180223879
2018-08-09

Pressure limiting device, in particular for an assist system for vehicles

#9
20170306590
2017-10-26

Hydraulic drive system of construction machine

#10
20150300384
2015-10-22

Hydraulic system having energy recovery

#11
20150107699
2015-04-23

Valve for valve assembly

#12
20150075150
2015-03-19

Closed hydraulic circuit

#13
20150052888
2015-02-26

Hydraulic system

#14
20140366519
2014-12-18

Hydraulic closed circuit system

#15
20140331664
2014-11-13

Slewing type working machine

#16
20140299030
2014-10-09

Hydraulic steering arrangement for a thruster of a marine vessel

#17
20140245734
2014-09-04

Hybrid excavator having a system for reducing actuator shock

#18
20140190159
2014-07-10

Slewing type construction machine

#19
20140178167
2014-06-26

Rotation control device and construction machine including rotation control device

#20
20140044514
2014-02-13

Slewing type working machine

#21
20140033690
2014-02-06

MACHINE HYDRAULIC SYSTEM HAVING FINE CONTROL MODE

#22
20140013753
2014-01-16

Slewing type working machine

#23
20130180247
2013-07-18

Electro-hydraulic drive system for a work machine

#24
20130139678
2013-06-06

Hydraulic drive system for hydraulic working machine

#25
20130125536
2013-05-23

System and method for energy recovery

#26
20130098464
2013-04-25

Closed-loop hydraulic system having regeneration configuration

#27
20130081704
2013-04-04

Meterless hydraulic system having multi-actuator circuit

#28
20130073111
2013-03-21

Control device for an electric actuator

#29
20130048117
2013-02-28

Meterless hydraulic system having displacement control valve

#30
20130047599
2013-02-28

Meterless hydraulic system having load-holding bypass

#31
20130004280
2013-01-03

Hydraulic control system having swing motor energy recovery

#32
20130000290
2013-01-03

Energy recovery system having accumulator and variable relief

#33
20130000289
2013-01-03

Hydraulic control system having swing motor energy recovery

#34
20130000094
2013-01-03

Hydraulic control system having energy recovery kit

#35
20120260642
2012-10-18

Load holding for meterless control of actuators

#36
20120260641
2012-10-18

Overrunning pump protection for flow-controlled actuators

#37
20120131913
2012-05-31

Hydraulic swing-controlling apparatus of work machine

#38
20120055149
2012-03-08

SEMI-CLOSED HYDRAULIC SYSTEMS

#39
20110248196
2011-10-13

Electro-hydraulic actuator including a release valve assembly

#40
20110208363
2011-08-25

Method of controlling an electro-hydraulic actuator system having multiple actuators

#41
20110120297
2011-05-26

Hydraulic Circuit

#42
20110088789
2011-04-21

Hydraulic control valve

#43
20110030364
2011-02-10

Flow management system for hydraulic work machine

#44
20100300279
2010-12-02

Point Of Use Actuator

#45
20100264106
2010-10-21

Slewing stop control apparatus and method for slewing type working machine

#46
20100263364
2010-10-21

Braking control apparatus for slewing type working machine

#47
20100116929
2010-05-13

Hybrid electromechanical/hydromechanical actuator and actuation control system

#48
20100062890
2010-03-11

Fluid supply apparatus

#49
20090308066
2009-12-17

Motor control device for construction machinery

#50
20090282824
2009-11-19

Concrete agitating drum driving device

#51
20090235658
2009-09-24

Inertial body drive system

#52
20090217653
2009-09-03

Control system for recovering swing motor kinetic energy

#53
20090158725
2009-06-25

Hydraulic pump with control system

#54
20090055056
2009-02-26

Swing drive system for construction machine

#55
20080317574
2008-12-25

Swing Drive Device and Work Machine

#56
20080282691
2008-11-20

Pressure-compensating directional control valve

#57
20080264363
2008-10-30

Electrohydraulic solar panel carrier adjusting device

#58
20080224073
2008-09-18

Hydraulic valve arrangement

#59
20080141668
2008-06-19

Electrohydraulic drawing press cushion drive

#60
20080072589
2008-03-27

Hydraulic drive

#61
20080011155
2008-01-17

Method and apparatus for coordinated linkage motion

#62
20070157612
2007-07-12

COMPACT HYDRAULIC ACTUATOR SYSTEM

#63
20070131883
2007-06-14

Hydraulic drive system

#64
20070119162
2007-05-31

Hydrostatic drive system

#65
20070102223
2007-05-10

Hydraulic power unit

#66
20070017364
2007-01-25

Hydraulic control unit for the arms of a grip and grip including said hydraulic unit

#67
20060207247
2006-09-21

Actuator

#68
20060174614
2006-08-10

Control devices for swashplate type variable displacement piston pump

#69
20060081121
2006-04-20

Hydraulic valve arrangement

#70
20060026955
2006-02-09

Pressure-medium-actuated actuation device, in particular for a vehicle steering apparatus

#71
20050132702
2005-06-23

Continuously variable torque shredder drive

#72
20050109026
2005-05-26

Open hydraulic circuit including a relief valve device