ClassID:

146159

F15B21/042 - 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; Special measures taken in connection with the properties of the fluid Controlling the temperature of the fluid

Recent Application in this class:
#1
20250137474
2025-05-01

APPARATUS AND METHOD FOR RECIRCULATING HYDRAULIC FLUID

#2
20240255011
2024-08-01

METHOD OF OPERATING A HYDRAULIC SYSTEM FROM AN OFF-STATE IN A COLD ENVIRONMENT

#3
20230323976
2023-10-12

Positioning valve control system

#4
20230256842
2023-08-17

SYSTEMS AND METHODS FOR AN ELECTRIC MACHINE

#5
20230175532
2023-06-08

Valve for dividing a hydraulic circuit and hydraulic circuit comprising said valve

#6
20220407327
2022-12-22

Electric vehicle fluid heating system

#7
20220316155
2022-10-06

Self-propelled ground milling machine

#8
20220220977
2022-07-14

Methods and systems for cooling a pressurized fluid with a reduced-pressure fluid

#9
20210180622
2021-06-17

Thermal management for aircraft hydraulic systems

#10
20210148386
2021-05-20

Hydraulic system for working machine

#11
20210131062
2021-05-06

Hydraulic tank

#12
20200277968
2020-09-03

Methods and systems for cooling a pressurized fluid with a reduced-pressure fluid

#13
20200263802
2020-08-20

Heating of solenoids

#14
20200240440
2020-07-30

Hydraulic system for work machine and work machine

#15
20200095750
2020-03-26

Hydraulic oil cooling system

#16
20200002920
2020-01-02

Hydraulic system for working machine

#17
20190338793
2019-11-07

Hydraulic fluid warming system and method

#18
20190309673
2019-10-10

Method of removal of engine exhaust from a work machine and system thereof

#19
20190210704
2019-07-11

Unmanned underwater vehicle and method for controlling hydraulic system

#20
20190186512
2019-06-20

HYDRAULIC SYSTEM CHARACTERISTICS

#21
20190112787
2019-04-18

Temperature responsive hydraulic derate

#22
20190072178
2019-03-07

Hydrostatic valve arrangement, hydrostatic gear having the valve arrangement, and hydrostatic drive having the gear

#23
20190063475
2019-02-28

Actuator cooling flow limiter

#24
20190003587
2019-01-03

Hydraulic switching assembly for a motor vehicle

#25
20180372133
2018-12-27

WORK DEVICE HAVING A HYDRAULIC DRIVE FOR CIVIL ENGINEERING WORK

#26
20180346101
2018-12-06

Thermally controlled active flow control system

#27
20180282967
2018-10-04

Hydraulic supply systems

#28
20180274568
2018-09-27

Actuating drive for a control valve, in particular steam turbine control valve and method for operating same

#29
20180274526
2018-09-27

Electrohydraulic compact assembly

#30
20180216638
2018-08-02

Wind turbine, control device for same, and control method for same

#31
20180214932
2018-08-02

Hydraulic knockout device

#32
20180179736
2018-06-28

Hydraulic system for working machine

#33
20180172177
2018-06-21

Hydraulic drive for executing a linear movement

#34
20180163375
2018-06-14

Hydraulic system for working machine

#35
20180045226
2018-02-15

Fluid delivery systems including hydraulic drive systems

#36
20180038074
2018-02-08

Construction machine provided with preheating unit and preheating method of construction machine

#37
20170361919
2017-12-21

Propeller blade angle control system

#38
20170356438
2017-12-14

PORTABLE FLUID PUMP SYSTEM

#39
20170306993
2017-10-26

Varnish mitigation process

#40
20170292540
2017-10-12

Hydraulic system for work machine and work machine

#41
20170198828
2017-07-13

Heating of solenoids

#42
20170198727
2017-07-13

Oil exchange in hydraulically operated and electro-hydraulically operated hydraulic valves

#43
20170191509
2017-07-06

Systems and methods for heat balance and transport for aircraft hydraulic systems

#44
20170089366
2017-03-30

Hydraulic system of work machine

#45
20170058923
2017-03-02

Compact unit

#46
20170058922
2017-03-02

Hydraulic fluid warmup system and method

#47
20170037883
2017-02-09

Aircraft hydraulic thermal management system

#48
20170023032
2017-01-26

Loop-flushing-system for hydrostatic apparatus

#49
20160363209
2016-12-15

External cooling circuit and adapter for use with integrated hydrostatic transaxle

#50
20160305093
2016-10-20

Work machine

#51
20160258450
2016-09-08

Control apparatus

#52
20160250936
2016-09-01

Hybrid construction machine

#53
20160230787
2016-08-11

IMPLEMENT CARRIER WITH IMPROVED CONTROL OF HYDRAULIC FLUID SUPPLY

#54
20160201545
2016-07-14

Cooling fan control device for construction machine

#55
20160069362
2016-03-10

Aircraft hydraulic fluid heating system and method

#56
20160061280
2016-03-03

Hydraulic system with an unloading valve

#57
20160033052
2016-02-04

Servo valve with double mobile assembly

#58
20150361866
2015-12-17

Ground milling machine having a cooling system, cooling system, and method for cooling a ground milling machine

#59
20150354609
2015-12-10

Hydraulic flushing system and method

#60
20150345522
2015-12-03

COMPRESSED GAS ENERGY STORAGE SYSTEM

#61
20150308469
2015-10-29

Machine control system having hydraulic warmup procedure

#62
20150308468
2015-10-29

Valve for the temperature-dependent control of at least one hydraulic load

#63
20150275937
2015-10-01

Hydraulic excavator

#64
20150275468
2015-10-01

Hydraulic system for working machine

#65
20150252822
2015-09-10

Method for operating a hydraulic system of a self-propelled paver, hydraulic system, especially for using the method, and paver with such a hydraulic system

#66
20150204358
2015-07-23

Hydraulic system for extreme climates

#67
20150192148
2015-07-09

HYDRAULIC CIRCUIT FOR WORKING MACHINE, COMPRISING ACCUMULATOR

#68
20150176616
2015-06-25

HEATER SYSTEM FOR PRESSURIZABLE AND FLUID-RETAINING VESSEL

#69
20150168089
2015-06-18

Fluid cooler bypass system for an agricultural work vehicle

#70
20150096288
2015-04-09

Systems and methods for heat balance and transport for aircraft hydraulic systems

#71
20150075150
2015-03-19

Closed hydraulic circuit

#72
20150020995
2015-01-22

Slim mobile hydraulic fluid cooling assembly

#73
20150013954
2015-01-15

Systems and methods for heat balance and transport for aircraft hydraulic systems

#74
20150013321
2015-01-15

Separate hydraulic unit with cooling of oil

#75
20140338317
2014-11-20

Pipelayer

#76
20140305723
2014-10-16

Hydraulic fluid warm-up using hydraulic fan reversal

#77
20140193230
2014-07-10

Hydraulic fluid warm-up

#78
20140182711
2014-07-03

Pump fan control circuit and block for truck mountable hydraulic system

#79
20140083092
2014-03-27

Hydraulic circuit for construction equipment

#80
20140064998
2014-03-06

Hydraulic motor assembly for an aerial refueling system

#81
20140060020
2014-03-06

Hydraulic control system having over-pressure protection

#82
20140047823
2014-02-20

Microactuator using bubble growth and destruction

#83
20140018964
2014-01-16

Valve contamination dislodgement

#84
20130336802
2013-12-19

Case flow augmenting arrangement for cooling variable speed electric motor-pumps

#85
20130312402
2013-11-28

Hydraulic system for work machine

#86
20130276439
2013-10-24

Hydraulic pump system and method of operation

#87
20130264028
2013-10-10

Turbulated immersion heat-exchange apparatus

#88
20130251490
2013-09-26

Working machine with variable displacement hydraulic pump

#89
20130248306
2013-09-26

Vibration control device for railroad vehicle

#90
20130219874
2013-08-29

Hydraulic arrangement

#91
20130213001
2013-08-22

Oil supply system for a stationary turbomachine

#92
20130183127
2013-07-18

Warm up cycle for a materials handling vehicle

#93
20130167823
2013-07-04

Work vehicle fluid heating system

#94
20130081387
2013-04-04

Fluid cooling device

#95
20130068885
2013-03-21

Landing gear retraction/extension device of aircraft

#96
20130026431
2013-01-31

Pipe layer and warm-up method for pipe layer

#97
20120317964
2012-12-20

Hydrostatic circuits with variable charge and variable flushing systems

#98
20120305216
2012-12-06

TURBULATED IMMERSION HEAT-EXCHANGE APPARATUS

#99
20120233998
2012-09-20

Control system for hybrid construction machine

#100
20120144817
2012-06-14

Operating oil temperature controller for hydraulic drive device

#101
20110131967
2011-06-09

Brake system and vehicle comprising a brake system

#102
20110079373
2011-04-07

Fluid cooling device with a replenishment circuit

#103
20110061744
2011-03-17

Cooler bypass apparatus and installation kit

#104
20090218083
2009-09-03

TURBULATED IMMERSION HEAT-EXCHANGE APPARATUS

#105
20050126383
2005-06-16

Fluid circuit system

#106
16703771
2022-03-01

Isothermal pump with improved characteristics

#107
15784880
2020-02-11

Transmission assembly

#108
15496945
2019-02-05

Loop flushing valve

#109
14713445
2017-05-02

Loop flushing valve

#110
14640616
2017-10-17

Transmission assembly

#111
13460763
2016-12-13

Hydraulic fluid heat dissipation control assembly and method

#112
13459858
2015-06-02

Transmission assembly having an expansion bladder

#113
13411484
2015-08-18

Compressed gas energy storage system