ClassID:

143681

F04C29/0007 - CPC Classification

Classification description:

Component parts, details or accessories of pumps or pumping installations, not provided for in groups  -  Injection of a fluid in the working chamber for sealing, cooling and lubricating

Sub-classes:
Recent Application in this class:
#1
20260146610
2026-05-28

COMPRESSOR STRUCTURE

#2
20250305499
2025-10-02

MULTIFUNCTIONAL VACUUM PUMP

#3
20250198407
2025-06-19

AIREND HAVING A LUBRICANT FLOW VALVE AND CONTROLLER

#4
20250129784
2025-04-24

MULTI-STAGE COMPRESSOR HAVING INTERSTAGE LUBRICANT INJECTION VIA AN INJECTION ROD

#5
20240376878
2024-11-14

ASSEMBLY FOR COMPRESSING GAS, METHOD FOR COOLING, AND USE OF SUCH AN ASSEMBLY

#6
20240288197
2024-08-29

SCROLL COMPRESSOR WITH INTERMEDIATE INJECTION

#7
20240183357
2024-06-06

SCREW COMPRESSOR

#8
20240084800
2024-03-14

Scroll compressor including a valve plate having a surface pressure enhancement portion protruding toward an injection valve

#9
20240077078
2024-03-07

ROTARY VANE VACUUM PUMP WITH GAS BALLAST ASSEMBLY

#10
20240060493
2024-02-22

Scroll machine with injection and refrigeration system

#11
20240060492
2024-02-22

Scroll machine and refrigeration system

#12
20240011489
2024-01-11

Airend having a lubricant flow valve and controller

#13
20240003347
2024-01-04

Multi-stage compressor having interstage lubricant injection via an injection rod

#14
20230349384
2023-11-02

Screw compressor with oil injection at multiple volume ratios

#15
20230204032
2023-06-29

Scroll compressor

#16
20230070782
2023-03-09

Liquid supply type screw compressor

#17
20230069695
2023-03-02

Scroll compressor with inclined wall surface extending from the dust wrap

#18
20230066647
2023-03-02

Compressor with injection mechanism

#19
20230042489
2023-02-09

Scroll compressor

#20
20230018817
2023-01-19

Single-stage enthalpy enhancing rotary compressor and air conditioner having same

#21
20220389930
2022-12-08

Multi-stage pump apparatus including sealing member

#22
20220389929
2022-12-08

Scroll compressor including a front housing, a center housing, and a rear housing having first, second, and third annular walls

#23
20220372982
2022-11-24

Compressor body and compressor to supply liquid into working chambers and whose downstream portion reaches a suction bearing chamber

#24
20220341423
2022-10-27

Screw compressor having a screw rotor whose pitch changes in an axial direction from a suction end surface toward a discharge end surface

#25
20220268282
2022-08-25

Scroll compressor

#26
20220268276
2022-08-25

Screw compressor having a plurality of branch paths with intersects and central axes

#27
20220178372
2022-06-09

Rotary compressor with backflow suppresion mechanism for an introduction path

#28
20220120278
2022-04-21

Multi-stage compressor having interstage lubricant injection via an injection rod

#29
20220112905
2022-04-14

Compressor or vacuum pump device, a liquid return system for such a compressor or vacuum pump device and a method for draining liquid from a gearbox of such a compressor or vacuum pump device

#30
20210404471
2021-12-30

Screw compressor with oil injection at multiple volume ratios

#31
20210396232
2021-12-23

COMPRESSOR WITH LIQUID INJECTION COOLING

#32
20210381510
2021-12-09

Screw compressor having a lubrication path for a plurality of suction side bearings

#33
20210301825
2021-09-30

Rotary fluid flow device

#34
20210301821
2021-09-30

Motor-driven compressor

#35
20210190060
2021-06-24

Liquid-cooled type compressor having first and second nozzle injection ports with different characteristics

#36
20210095666
2021-04-01

Scroll compressor

#37
20210088045
2021-03-25

Screw compressor having a plurality of branch paths with intersects and central axes

#38
20210062807
2021-03-04

Co-rotational scroll machine

#39
20210017995
2021-01-21

Oil-injected screw compressor installation in which cooling module is offset from compressor element

#40
20200386229
2020-12-10

Screw compressor having an opening of a fluid supply portion between the compression intersection line and a trajectory line

#41
20200362862
2020-11-19

Intake pipe used for compressor system and compressor system

#42
20200332795
2020-10-22

Scroll compressor having injection passage including first and second outlet passage sections

#43
20200271115
2020-08-27

Scroll compressor and refrigeration cycle apparatus including injection port opening into suction chamber

#44
20200240415
2020-07-30

Oil feed type air compressor

#45
20200158107
2020-05-21

Vane compressor with an improved lubrication system

#46
20200141409
2020-05-07

Water lubrication twin-screw air compressing system

#47
20200063736
2020-02-27

Compressor having injection function

#48
20200025202
2020-01-23

Compressor with mechanical seal

#49
20190316585
2019-10-17

Liquid-injected compressor or expander element and method for controlling the liquid injection of a compressor or expander device

#50
20190277288
2019-09-12

APPARATUS, SYSTEMS, AND METHODS FOR ECONOMIZED VAPOR COMPRESSION CYCLE

#51
20190271317
2019-09-05

Rotary fluid flow device

#52
20190271316
2019-09-05

Multi-stage compressor having interstage lubricant injection via an injection rod

#53
20190242385
2019-08-08

Compressor and valve assembly

#54
20190170143
2019-06-06

Fluid machine

#55
20190136858
2019-05-09

COMPRESSOR WITH LIQUID INJECTION COOLING

#56
20190128264
2019-05-02

Oil-cooled screw compressor

#57
20190101121
2019-04-04

Screw compressor with oil injection at multiple volume ratios

#58
20190093659
2019-03-28

Rotary screw compressor with atomized oil injection

#59
20190085845
2019-03-21

Oscillating piston-type compressor

#60
20190072093
2019-03-07

Compression device

#61
20190032663
2019-01-31

Water lubrication air compression system

#62
20180372100
2018-12-27

Scroll compressor and air conditioner having the same

#63
20180311601
2018-11-01

Device for separating liquid from a gas stream coming from a liquid injected vacuum pump or compressor

#64
20180274541
2018-09-27

Oil-injected vacuum pump element

#65
20180252218
2018-09-06

PAIRED OIL COOLER AND AFTERCOOLER FLUID FLOW ARRANGEMENT

#66
20180230999
2018-08-16

Volumetric lobe compressor for equipment collecting waste material

#67
20180223847
2018-08-09

Oil-cooled screw compressor and control method therefor

#68
20180209423
2018-07-26

Rotary compressor with vapor injection system

#69
20180156217
2018-06-07

Refrigeration cycle device with motor speed estimator

#70
20180156215
2018-06-07

Rotary compressor and refrigeration cycle device having same

#71
20180128270
2018-05-10

Scroll compressor and refrigeration cycle apparatus

#72
20180119602
2018-05-03

Oil-injected screw air compressor

#73
20180106255
2018-04-19

Compressor with liquid injection cooling

#74
20180050674
2018-02-22

Vacuum pump with rotor shaft supported by friction bearings

#75
20180023566
2018-01-25

Rotary screw vacuum pumps

#76
20180017062
2018-01-18

Compressor system and lubricant control valve to regulate temperature of a lubricant

#77
20170292520
2017-10-12

Rotary compressor having an injection connecting pipe that extends to an upper portion of a compressor housing and that is linked to an injection pipe via an injection pipe taking-out portion

#78
20170204857
2017-07-20

Epitrochoidal type compressor

#79
20170082107
2017-03-23

Contact cooled rotary airend injection spray insert

#80
20170067468
2017-03-09

Compressor

#81
20170067465
2017-03-09

Air compressor

#82
20170058896
2017-03-02

Compressor system having rotor with distributed coolant conduits and method

#83
20170058846
2017-03-02

Vacuum pump and system of a vacuum pump and an engine

#84
20170051569
2017-02-23

Combustor for heating of airflow on a drill rig

#85
20160369800
2016-12-22

Suction/compression assembly for a waste material intake equipment or system

#86
20160319818
2016-11-03

Scroll compressor

#87
20160230765
2016-08-11

Scroll compressor

#88
20160201669
2016-07-14

Scroll compressor and air conditioner including a scroll compressor

#89
20160160860
2016-06-09

Capacity modulated scroll compressor

#90
20160138594
2016-05-19

Oil flooded compressor having motor operated temperature controlled mixing valve

#91
20160131138
2016-05-12

Compressor with liquid injection cooling

#92
20150240817
2015-08-27

Oil separator device for a volumetric compressor and volumetric compressor

#93
20150192124
2015-07-09

Electric compressor

#94
20150135764
2015-05-21

Scroll compressor and air conditioner including a scroll compressor

#95
20150118091
2015-04-30

Rotary compressor with vapor injection system

#96
20140348679
2014-11-27

Scroll compressor having biasing system

#97
20140127067
2014-05-08

Screw compressor having a volume ratio being adjusted by end faces extending along from a low-pressure side end wall to discharge edges of a slider

#98
20140119971
2014-05-01

Sealed scroll compressor for helium

#99
20140083130
2014-03-27

Apparatus and method for enhancing compressor efficiency

#100
20140053544
2014-02-27

Heat engine system for power and heat production

#101
20140037486
2014-02-06

Compressor having capacity modulation or fluid injection systems

#102
20130058799
2013-03-07

COMPRESSOR SYSTEM INCLUDING A FLOW AND TEMPERATURE CONTROL DEVICE

#103
20120308425
2012-12-06

ROTARY COMPRESSOR

#104
20120294748
2012-11-22

Sealed Scroll Compressor for Helium

#105
20120258004
2012-10-11

Scroll compressor with fluid injection feature

#106
20120251355
2012-10-04

Electric connector for cooling a compressor drive circuit

#107
20120247139
2012-10-04

Piston operated bypass valve for a screw compressor

#108
20120156068
2012-06-21

Hermetically sealed scroll compressor

#109
20120087819
2012-04-12

Rotary compressor

#110
20110274574
2011-11-10

Water injected scroll air compressor

#111
20110044834
2011-02-24

Scroll compressor including lubrication features

#112
20110016895
2011-01-27

Methods and Systems for Injecting Liquid Into a Screw Compressor for Noise Suppression

#113
20100303659
2010-12-02

Compressor having piston assembly

#114
20100300659
2010-12-02

Compressor having capacity modulation or fluid injection systems

#115
20100129240
2010-05-27

Hermetically sealed scroll compressor

#116
20100116254
2010-05-13

Roots type gear compressor with helical lobes having communication with discharge port

#117
20100054978
2010-03-04

INJECTIBLE TWO-STAGE COMPRESSION ROTARY COMPRESSOR

#118
20090232688
2009-09-17

Compressor Installation With a Water-Injected Compressor Element

#119
20090191080
2009-07-30

Scroll compressor including deflection compensation for non-orbiting scroll

#120
20090151683
2009-06-18

Fluid system for oscillating-piston engines

#121
20090041589
2009-02-12

Oil-injected compressor with a temperature switch

#122
20090028737
2009-01-29

Reservoir for a replacement fluid for a device and a device, together with an oil separator fitted with such a reservoir

#123
20080253914
2008-10-16

LIQUID INJECTION TYPE SCREW COMPRESSOR

#124
20080080997
2008-04-03

Screw compressor

#125
20080031742
2008-02-07

Arrangement and Method for Treatment of Compressed Gas

#126
20070186581
2007-08-16

Compressor cooling system

#127
20070092390
2007-04-26

Scroll compressor

#128
20070000261
2007-01-04

Very low temperature refrigeration system having a scroll compressor with liquid injection

#129
20060285966
2006-12-21

Screw compressor and freezer

#130
20060182647
2006-08-17

Screw compressor

#131
20060144641
2006-07-06

Compressor lubricant system including acid filtration