ClassID:

146274

F15B2211/3133 - CPC Classification

Classification description:

Circuits for servomotor systems; Directional control characterised by the positions of the valve element; Special positions other than the pump port being connected to working ports or the working ports being connected to the return line Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke

Recent Application in this class:
#1
20260009408
2026-01-08

HYDRAULIC FORCE FIGHT MITIGATION

#2
20250116282
2025-04-10

HYDRAULIC DISTRIBUTOR WITH COMPENSATION DEVICE FOR DIRECTIONAL VALVES

#3
20230151829
2023-05-18

HYDRAULIC FORCE FIGHT MITIGATION

#4
20230113111
2023-04-13

Hydraulic system

#5
20220298754
2022-09-22

Control valve of hydraulic system for working machine

#6
20220112687
2022-04-14

Hydraulic system for working machine

#7
20220090611
2022-03-24

Hydraulic system for working machine

#8
20220049463
2022-02-17

Hydraulic control circuit for a construction machine

#9
20210246913
2021-08-12

Fluid circuit selection system and fluid circuit selection method

#10
20200190770
2020-06-18

Stick control system in construction machine

#11
20200063760
2020-02-27

Pressure booster

#12
20190301136
2019-10-03

Hydraulic system for working machine

#13
20190277310
2019-09-12

Driving method and driving device of fluid pressure cylinder

#14
20190056036
2019-02-21

Spool valve

#15
20180334784
2018-11-22

Hydraulic system for working machine and control valve

#16
20180051720
2018-02-22

Hydraulic fluid energy regeneration apparatus of work machine

#17
20170130744
2017-05-11

System and method for hydraulic energy recovery

#18
20160160884
2016-06-09

Systems and methods for selectively engaged regeneration of a hydraulic system

#19
20160138618
2016-05-19

Hydraulic regenerative and recovery parasitic mitigation system

#20
20160053778
2016-02-25

Apparatus and method for controlling spool displacement of construction machine

#21
20150361995
2015-12-17

Flow control device and flow control method for construction machine

#22
20150159678
2015-06-11

Flow control valve for construction machinery

#23
20150059568
2015-03-05

Hydraulic control circuit with regeneration valve

#24
20150013320
2015-01-15

Hydraulic drive system

#25
20140158922
2014-06-12

Solenoid valve assembly

#26
20130318958
2013-12-05

Control valve assembly

#27
20130098023
2013-04-25

Energy recovery control circuit and work machine

#28
20130086899
2013-04-11

Hydraulic system with bi-directional regeneration

#29
20130081385
2013-04-04

Meterless hydraulic system having multi-actuator circuit

#30
20110024557
2011-02-03

Landing gear

#31
20110005625
2011-01-13

Solenoid valve assembly

#32
20100031649
2010-02-11

Hydraulic drive device for hydraulic excavator

#33
20090199552
2009-08-13

Hydraulic working machine

#34
20090107133
2009-04-30

Procedure to align working equipment mounted to a liftable and lowerable hoisting frame of a working machine

#35
20090045384
2009-02-19

Tool with hydraulic valve system

#36
20090036264
2009-02-05

Work machine

#37
20090000468
2009-01-01

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

#38
20080141854
2008-06-19

Press having regeneration circuit

#39
20070245889
2007-10-25

Hydraulic Control Arrangement

#40
20070016349
2007-01-18

Hydraulic control apparatus for hydraulic excavator

#41
20070012171
2007-01-18

Hydraulic drive

#42
20060162543
2006-07-27

Hydraulic working machine

#43
20060081121
2006-04-20

Hydraulic valve arrangement

#44
20050194225
2005-09-08

Air cylinder with high frequency shock absorber and accelerator