ClassID:

143896

F04C2270/185 - CPC Classification

Classification description:

Control; Monitoring or safety arrangements; Pressure Controlled or regulated

Recent Application in this class:
#1
20260117771
2026-04-30

Screw Compressor

#2
20260016006
2026-01-15

SCREW COMPRESSOR AND REFRIGERATION APPARATUS

#3
20250314250
2025-10-09

METHODS FOR MEASURING FLUID FLOW OF FLUID SUPPLY ASSEMBLY

#4
20250243861
2025-07-31

SCROLL COMPRESSOR HAVING OVERHEATING PREVENTION DEVICE

#5
20250188930
2025-06-12

SCREW COMPRESSOR

#6
20240392784
2024-11-28

COMPRESSOR MODULE

#7
20240392728
2024-11-28

DIRECT CONTROL VARIABLE DISPLACEMENT METERING PUMPS

#8
20240102469
2024-03-28

Retainer block bypass hole valve assembly arranged in non-orbiting scroll of a compressor

#9
20240068473
2024-02-29

METHODS AND SYSTEMS FOR AIR COMPRESSOR AND ENGINE DRIVEN CONTROL

#10
20240035469
2024-02-01

Apparatus and Method for Regulating a Delivery Volume of a Displacement Pump

#11
20230407866
2023-12-21

SCROLL COMPRESSOR

#12
20230366397
2023-11-16

SYSTEMS AND METHODS FOR OPERATION MODES FOR AN AIR COMPRESSOR

#13
20230366391
2023-11-16

GAS COMPRESSOR

#14
20230323877
2023-10-12

METHODS FOR MEASURING FLUID FLOW OF FLUID SUPPLY ASSEMBLY

#15
20230213033
2023-07-06

Scroll compressor with a pressure relief low-speed rotation structure

#16
20230123953
2023-04-20

Compressor having floating seal assembly

#17
20230097255
2023-03-30

Screw compressor with a shunt-enhanced decompression and pulsation trap (SEDAPT)

#18
20230080102
2023-03-16

Pump system

#19
20220364563
2022-11-17

Gas-liquid separator and method and air compressor system equipped therewith

#20
20220307500
2022-09-29

Compressor module

#21
20220290667
2022-09-15

PORTABLE FLUID PUMP

#22
20220235764
2022-07-28

Variable displacement vane pump with improved pressure control and range

#23
20220099092
2022-03-31

Motor driven compressor apparatus including swing pin

#24
20220074410
2022-03-10

SCREW COMPRESSOR WITH A SHUNT-ENHANCED COMPRESSION AND PULSATION TRAP (SECAPT)

#25
20210372406
2021-12-02

Variable compressor housing

#26
20210340982
2021-11-04

Compressor having floating seal assembly

#27
20210277893
2021-09-09

System to pump fluid and control thereof

#28
20210207600
2021-07-08

Valve assembly for an electrical refrigerant compressor

#29
20210190070
2021-06-24

Compressor having capacity modulation assembly

#30
20210156383
2021-05-27

Gas compressor

#31
20210148363
2021-05-20

Methods and systems for air compressor and engine driven control

#32
20210131434
2021-05-06

Positive-displacement compressor having an automatic compression ratio-adjustment system

#33
20210115917
2021-04-22

SCROLL COMPRESSOR

#34
20210048025
2021-02-18

Vaned pump device having fluid pressure chambers located outside the cam ring to control cam ring eccentricity

#35
20200340473
2020-10-29

Vane pump

#36
20200318640
2020-10-08

Method of pumping in a system of vacuum pumps and system of vacuum pumps

#37
20200284251
2020-09-10

Pressure safety shutoff

#38
20200191147
2020-06-18

Pumping unit and use

#39
20200173436
2020-06-04

Motor driven compressor apparatus including swing pin

#40
20200158108
2020-05-21

MOTOR OPERATED COMPRESSOR

#41
20200088623
2020-03-19

System and method for providing stable fluid flow

#42
20200088197
2020-03-19

Scroll compressor with back pressure chamber and back pressure passages

#43
20200080560
2020-03-12

Control device for internal combustion engine

#44
20200072220
2020-03-05

Controller unit for controlling the speed of a motor driving an oil injected compressor and method of controlling said speed

#45
20200032793
2020-01-30

Variable displacement pump

#46
20190301454
2019-10-03

Rotary piston pump having a sealing chamber seal

#47
20190211828
2019-07-11

Scroll compressor with back pressure control valve

#48
20190195223
2019-06-27

Pump apparatus having axially moving shaft bearing disposed adjacent a pressure relief passage to facilitate a pressure relief function of same

#49
20190145412
2019-05-16

Methods and systems for air compressor and engine driven control

#50
20190120227
2019-04-25

Two-stage variable-displacement oil pump

#51
20190101207
2019-04-04

Air vent structure of oil pump for automatic transmission, and method for assembling air vent structure

#52
20190085843
2019-03-21

Rotary pump driven medicament delivery device

#53
20190072094
2019-03-07

Displacement machine according to the spiral principle, method to regulate pressure in the counter-pressure chamber by using a pressure difference and characteristic curve

#54
20190017596
2019-01-17

Hydraulic control apparatus and hydraulic control method

#55
20190003478
2019-01-03

Self adjusting pump for ice cream freezer

#56
20180291901
2018-10-11

Gas Compressor

#57
20180291895
2018-10-11

System to pump fluid and control thereof

#58
20180274491
2018-09-27

Fuel evaporative gas emission suppressor

#59
20180245594
2018-08-30

PUMP SYSTEM INCLUDING A CONTROLLER

#60
20180245589
2018-08-30

Variable oil pump

#61
20180245588
2018-08-30

Variable oil pump

#62
20180245587
2018-08-30

Variable oil pump having adjustment ring containing guide portion with flat surface

#63
20180202438
2018-07-19

Power transmission apparatus

#64
20180200749
2018-07-19

JETTING DISPENSING SYSTEM INCLUDING FEED BY PROGRESSIVE CAVITY PUMP AND ASSOCIATED METHODS

#65
20180149050
2018-05-31

Thermo valve and oil pump

#66
20180135625
2018-05-17

VARIABLE CAPACITY OIL PUMP

#67
20180118378
2018-05-03

Anti-stall hydraulic pump for a thrust vector control system

#68
20180038395
2018-02-08

Electro-hydraulic machine with integrated sensor

#69
20180023564
2018-01-25

Variable displacement pump

#70
20180023516
2018-01-25

Natural gas fueled vehicle

#71
20180010598
2018-01-11

Hydraulic pump and respective multifunction valve

#72
20170306948
2017-10-26

Multiple Pressure Variable Displacement Pump with Mechanical Control

#73
20170298937
2017-10-19

Method for controlling an oil-injected compressor device

#74
20170276134
2017-09-28

VACUUM PUMP FOR VEHICLE

#75
20170227007
2017-08-10

PUMP DEVICE

#76
20170218965
2017-08-03

Load/unload control method for compressor system

#77
20170191922
2017-07-06

System and method for providing stable fluid flow

#78
20170159652
2017-06-08

Method for controlling a compressor installation

#79
20170122321
2017-05-04

Method of pumping in a system of vacuum pumps and system of vacuum pumps

#80
20170107987
2017-04-20

Actuation method and efficiency

#81
20170074263
2017-03-16

VEHICLE HYDRAULIC DEVICE

#82
20170058893
2017-03-02

Variable displacement pump

#83
20170030356
2017-02-02

Screw compressor

#84
20160273539
2016-09-22

Claw pump

#85
20160252090
2016-09-01

VARIABLE DISPLACEMENT LUBRICANT PUMP

#86
20160238093
2016-08-18

Hydraulic control device for drive power distribution device

#87
20160186756
2016-06-30

Compressor system with variable blowdown control

#88
20160115832
2016-04-28

Variable displacement lubricant pump

#89
20160040665
2016-02-11

Hydraulic conveying device and hydraulic system

#90
20150330256
2015-11-19

Thermal energy recovery device and control method

#91
20150252803
2015-09-10

Variable displacement pump

#92
20150226216
2015-08-13

Variable displacement transmission pump and controller with adaptive control

#93
20150075152
2015-03-19

Hydraulic pressure supply system of automatic transmission

#94
20150075151
2015-03-19

Hydraulic pressure supply system of automatic transmission

#95
20150010417
2015-01-08

Scroll compressor

#96
20140219847
2014-08-07

Variable displacement oil pump

#97
20140147323
2014-05-29

Variable displacement pump

#98
20140086763
2014-03-27

High-performance oil pump

#99
20140072458
2014-03-13

Variable displacement oil pump

#100
20140030120
2014-01-30

Variable displacement lubricant pump with a pressure control valve having a preload control arrangement

#101
20130149174
2013-06-13

CONTROL CIRCUIT FOR A VARIABLE VANE OIL PUMP

#102
20130039790
2013-02-14

Variable displacement lubricant pump

#103
20120295526
2012-11-22

Vacuum control in a vacuum filler without external air supply

#104
20120247139
2012-10-04

Piston operated bypass valve for a screw compressor

#105
20110286860
2011-11-24

Method for Controlling a Compressor Installation

#106
20100310403
2010-12-09

Oscillating variable displacement ring pump

#107
20100008797
2010-01-14

Electric pump unit and electric oil pump

#108
17201999
2022-06-21

High volume pump system

#109
17034910
2022-11-08

Pump system