Patents-Review.com
ClassID:

146333 ⎘

F15B2211/41554 - CPC Classification

Classification description:

Circuits for servomotor systems; Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a directional control valve

Recent Application in this class:
#1
20250122893
2025-04-17

Two-stage speed controller

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20220154743
2022-05-19

Hydraulic circuit with combined compensation and energy recovery function

 #3
20200095820
2020-03-26

Pneumatic pressure control device and pneumatic pressure control method for automatic door

 #4
20200049173
2020-02-13

Valve System For Flushing Contaminated Hydraulic Fluid

 #5
20200049172
2020-02-13

Control system for flushing contaminated hydraulic fluid

 #6
20190277310
2019-09-12

Driving method and driving device of fluid pressure cylinder

 #7
20190249693
2019-08-15

Discharge pressure scale and lifting-lowering device having a discharge pressure scale of this type

 #8
20190186105
2019-06-20

Work machine

 #9
20190169819
2019-06-06

Shovel and control valve for shovel

 #10
20180238027
2018-08-23

Hydraulic pump control system of hydraulic working machine

 #11
20180112684
2018-04-26

Boom control with integrated variable return metering

 #12
20180058043
2018-03-01

Reversible flow path construction

 #13
20180002897
2018-01-04

Hydraulic circuit for construction machine

 #14
20170276151
2017-09-28

HYDRAULIC CIRCUIT FOR CONSTRUCTION EQUIPMENT

 #15
20170253468
2017-09-07

Hydraulic control circuit for crane slewing gear

 #16
20170107691
2017-04-20

Method for controlling swing motor in hydraulic system and hydraulic system

 #17
20170009430
2017-01-12

Working machine control system

 #18
20160289923
2016-10-06

Construction machinery

 #19
20160160883
2016-06-09

Hydraulic circuit for construction machine

 #20
20150308625
2015-10-29

Hydraulic control arrangement for a plurality of actuators

 #21
20150267725
2015-09-24

Engine system utilizing hydraulic pressure

 #22
20150152842
2015-06-04

Wind energy system with a pitch adjustment system

 #23
20150068200
2015-03-12

Hydraulic circuit for construction machine and control device for same

 #24
20150059332
2015-03-05

Hydraulic circuit for construction machine

 #25
20150059331
2015-03-05

Hydraulic circuit for construction machine and control device therefor

 #26
20150040552
2015-02-12

Hydraulic circuit for construction machine and control device for same

 #27
20130152293
2013-06-20

Liquid-operated actuator assembly, particularly for a flush toilet, and flush toilet incorporating the assembly

 #28
20130126023
2013-05-23

HYDRAULIC SYSTEM WITH ENERGY REGENERATION

 #29
20120299310
2012-11-29

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

 #30
20120279209
2012-11-08

Systems and methods for energy storage and recovery using compressed gas

 #31
20120144817
2012-06-14

Operating oil temperature controller for hydraulic drive device

 #32
20120006013
2012-01-12

High-efficiency energy-conversion based on fluid expansion and compression

 #33
20120000557
2012-01-05

Systems and methods for reducing dead volume in compressed-gas energy storage systems

 #34
20110314803
2011-12-29

Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange

 #35
20110296823
2011-12-08

Systems and methods for energy storage and recovery using gas expansion and compression

 #36
20110219760
2011-09-15

Systems and methods for energy storage and recovery using compressed gas

 #37
20110185888
2011-08-04

Arrangement for hydraulic eccentric adjustment to set a predefined displacement for a hydrostatic motor

 #38
20110167813
2011-07-14

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

 #39
20110088797
2011-04-21

Fluid-pressure actuator unit

 #40
20110088785
2011-04-21

SAFETY FEATURE FOR STUCK VALVE

 #41
20110083762
2011-04-14

Hydraulic system having a backpressure control valve

 #42
20110056193
2011-03-10

Systems and methods for energy storage and recovery using compressed gas

 #43
20100139277
2010-06-10

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

 #44
20100089063
2010-04-15

Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression

 #45
20090282822
2009-11-19

Systems and methods for energy storage and recovery using compressed gas

 #46
20080229738
2008-09-25

Hydraulic circuit to prevent bucket separation from bucket rest during traveling of heavy equipment