ClassID:

143695

F04C29/021 - CPC Classification

Classification description:

Component parts, details or accessories of pumps or pumping installations, not provided for in groups  - ; Lubrication ; Lubricant separation Control systems for the circulation of the lubricant

Recent Application in this class:
#1
20250198407
2025-06-19

AIREND HAVING A LUBRICANT FLOW VALVE AND CONTROLLER

#2
20250129782
2025-04-24

Oil Feed Type Compressor

#3
20240044333
2024-02-08

Rotor assembly, compressor and air conditioner

#4
20240011489
2024-01-11

Airend having a lubricant flow valve and controller

#5
20230383749
2023-11-30

Liquid-cooled rotary compressor and coolant supply method therefor

#6
20230366400
2023-11-16

Gas compressor

#7
20230332602
2023-10-19

Liquid feed type gas compressor having a liquid supply system with first and second cooling units

#8
20230143495
2023-05-11

COMPRESSOR

#9
20230122823
2023-04-20

Vacuum pump lubricant recovery system returning lubricant from the air filter based on pressure measurements in the vacuum pump

#10
20230017093
2023-01-19

Airend having a lubricant flow valve and controller

#11
20220412359
2022-12-29

Refrigerant compressor including an oil level sensor arrangement

#12
20220243964
2022-08-04

COMPRESSOR WITH OIL EQUALIZING PIPE, PARALLEL COMPRESSOR SET, AND OIL EQUALIZING METHOD

#13
20220145889
2022-05-12

Compressor

#14
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

#15
20220099094
2022-03-31

Scroll compressor

#16
20210324858
2021-10-21

Oil-injected multistage compressor device and method for controlling a compressor device

#17
20210190071
2021-06-24

Compressor stop valve and associated system

#18
20210095657
2021-04-01

Airend having a lubricant flow valve and controller

#19
20200362862
2020-11-19

Intake pipe used for compressor system and compressor system

#20
20200318636
2020-10-08

Scroll compressor having function of regulating oil supply path

#21
20200263692
2020-08-20

Compressor having bypassing portion

#22
20200263691
2020-08-20

Compressor having decompressing structure

#23
20200248693
2020-08-06

Internal gear pump

#24
20200240415
2020-07-30

Oil feed type air compressor

#25
20200232687
2020-07-23

Compressor with oil equalizing pipe, parallel compressor set, and oil equalizing method

#26
20200157982
2020-05-21

Climate-control system having oil cooling control system

#27
20190376519
2019-12-12

Compressor having controllable oil supply and vehicle

#28
20190316585
2019-10-17

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

#29
20190301465
2019-10-03

Compressor system and system for maintaining a desired oil level

#30
20190293070
2019-09-26

Scroll compressor with partial load capacity

#31
20190285070
2019-09-19

Oil equalization configuration for multiple compressor systems containing three or more compressors

#32
20190277291
2019-09-12

Co-rotating scroll compressor

#33
20190242382
2019-08-08

Air compressor

#34
20190226483
2019-07-25

MOTOR VEHICLE VACUUM PUMP

#35
20190203716
2019-07-04

Compressor stop valve and associated system

#36
20190101117
2019-04-04

Vane pump

#37
20190093658
2019-03-28

Lubricating oil supply apparatus and compressor using lubricating oil supply apparatus

#38
20190072095
2019-03-07

Lubrication system for a compressor

#39
20190072093
2019-03-07

Compression device

#40
20190032663
2019-01-31

Water lubrication air compression system

#41
20180363652
2018-12-20

Method of controlling the temperature and mass flow of a liquid injected into the bearings and compressor space of a compressor using two separated liquid supplies

#42
20180347567
2018-12-06

Method for regulating the liquid injection of a compressor or expander device, a liquid-injected compressor or expander device, and a liquid-injected compressor or expander element

#43
20180340535
2018-11-29

Dry vacuum pump with pressurized bearing and seal

#44
20180298905
2018-10-18

Refrigerant compressor system

#45
20180223850
2018-08-09

Compressor

#46
20180209271
2018-07-26

AN INTELLIGENT VACUUM PUMP WITH LOW POWER CONSUMPTION

#47
20180187679
2018-07-05

SCROLL COMPRESSOR

#48
20180128269
2018-05-10

Scroll compressor

#49
20180058733
2018-03-01

Method for operating an oil level regulator

#50
20180045200
2018-02-15

Screw Compressor

#51
20180031041
2018-02-01

LOW CREEP BEARING AND METHOD FOR INSTALLING IN SUPERCHARGER

#52
20180030983
2018-02-01

Vacuum pump with cooling apparatus

#53
20180023571
2018-01-25

Oil-flooded screw compressor system and method for modifying the same

#54
20180017062
2018-01-18

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

#55
20180017061
2018-01-18

Compressor system and method for conditioning inlet air

#56
20170356448
2017-12-14

Screw compressor with oil shutoff and method

#57
20170356444
2017-12-14

Transfer device

#58
20170306951
2017-10-26

SCROLL COMPRESSOR AND REFRIGERATION CYCLE APPARATUS USING THE SAME

#59
20170298937
2017-10-19

Method for controlling an oil-injected compressor device

#60
20170254332
2017-09-07

Vacuum pump

#61
20170191479
2017-07-06

Double-ended scroll compressor lubrication of one orbiting scroll bearing via crankshaft oil gallery from another orbiting scroll bearing

#62
20170130720
2017-05-11

Liquid-cooled compressor and method for operating same

#63
20170108255
2017-04-20

Oil-gas balancing apparatus and compressor system with the same

#64
20170058846
2017-03-02

Vacuum pump and system of a vacuum pump and an engine

#65
20170051743
2017-02-23

Gas Compressor

#66
20170045052
2017-02-16

Multiple compressor configuration with oil-balancing system

#67
20160369801
2016-12-22

Screw machine and method for operating the same

#68
20160356272
2016-12-08

Compressor

#69
20160327045
2016-11-10

Method for preventing condensate in the oil of an oil-injected compressor and compressor in which such a method is applied

#70
20160327040
2016-11-10

COMPRESSOR

#71
20160298628
2016-10-13

Vacuum pump

#72
20160265530
2016-09-15

Air compressor system and method of operation

#73
20160252093
2016-09-01

Compressor assembly with liquid sensor

#74
20160252092
2016-09-01

Compressor assembly with liquid sensor

#75
20160201676
2016-07-14

VACUUM PUMP MECHANISM

#76
20160195090
2016-07-07

Scroll compressor

#77
20160186757
2016-06-30

Compressor with a closed loop water cooling system

#78
20160186756
2016-06-30

Compressor system with variable blowdown control

#79
20160186755
2016-06-30

Compressor system with variable lubricant injection orifice

#80
20160186754
2016-06-30

SCROLL COMPRESSOR AND AIR CONDITIONER HAVING THE SAME

#81
20160138594
2016-05-19

Oil flooded compressor having motor operated temperature controlled mixing valve

#82
20150260187
2015-09-17

Oil-cooled screw compressor system and oil-cooled screw compressor

#83
20150204328
2015-07-23

Electric compressor and method for manufacturing same

#84
20150125311
2015-05-07

System, pump and method of vacuum generation for applications to motor vehicles

#85
20150118092
2015-04-30

Compressor having balance mechanism for a thrust bearing

#86
20150064040
2015-03-05

Compressor assembly with liquid sensor

#87
20150037184
2015-02-05

Double-ended scroll compressor lubrication of one orbiting scroll bearing via crankshaft oil gallery from another orbiting scroll bearing

#88
20150030491
2015-01-29

Compressor device as well as the use of such a compressor device

#89
20150030468
2015-01-29

Compressor device and method for controlling such a compressor device

#90
20140334960
2014-11-13

Vacuum pump

#91
20140308148
2014-10-16

Water lubricated screw compressor

#92
20140241926
2014-08-28

Apparatus and method for oil equalization in multiple-compressor systems

#93
20140154105
2014-06-05

Oil balancing apparatus and refrigeration device

#94
20140072467
2014-03-13

Compressor and oil-cooling system

#95
20140056727
2014-02-27

Refrigerant compressor and refrigeration cycle apparatus using the same

#96
20140050560
2014-02-20

Lubrication of volumetrically operating expansion machines

#97
20140037484
2014-02-06

Oil equalization configuration for multiple compressor systems containing three or more compressors

#98
20140037483
2014-02-06

Method of active oil management for multiple scroll compressors

#99
20130306173
2013-11-21

Integrated rotary valve

#100
20130236344
2013-09-12

Scroll fluid machine

#101
20130156612
2013-06-20

Oil injection device for variable-speed scroll refrigeration compressor

#102
20130136622
2013-05-30

Compression device and a thermodynamic system comprising such a compression device

#103
20130129548
2013-05-23

Two-stage medium-pressure screw-type air compressor set

#104
20130058822
2013-03-07

Screw compressor

#105
20130058799
2013-03-07

COMPRESSOR SYSTEM INCLUDING A FLOW AND TEMPERATURE CONTROL DEVICE

#106
20130052068
2013-02-28

Scroll compressor with cover covering driving shaft of driving motor

#107
20120321486
2012-12-20

Compressor system including a flow and temperature control device

#108
20120266988
2012-10-25

Integrated rotary valve

#109
20120237382
2012-09-20

Screw expander system

#110
20120207634
2012-08-16

Lubricant control valve for a screw compressor

#111
20120207621
2012-08-16

Method and equipment for controlling operating temperature of air compressor

#112
20120003113
2012-01-05

Screw compressor

#113
20120003105
2012-01-05

Dry vacuum pump having multiple lubricant reservoirs

#114
20110286861
2011-11-24

Air compressor system and method of operation

#115
20110255995
2011-10-20

Air compressor system and method of operation

#116
20110255994
2011-10-20

Air compressor system and method of operation

#117
20110211973
2011-09-01

Compressor with oil level controller

#118
20110194965
2011-08-11

Lubrication of a scroll compressor

#119
20110135528
2011-06-09

Oil-free screw compressor

#120
20110070114
2011-03-24

Oil return valve for a scroll compressor

#121
20110014077
2011-01-20

Method for cooling a liquid-injected compressor element and liquid-inject compressor element for applying such a method

#122
20100307173
2010-12-09

Compressor and oil-cooling system

#123
20100202909
2010-08-12

Fluid machine and refrigeration cycle apparatus

#124
20100098570
2010-04-22

Variable-speed scroll-type refrigeration compressor

#125
20090191082
2009-07-30

Screw compressor

#126
20090014244
2009-01-15

Integrated rotary valve

#127
20080230317
2008-09-25

Oil Circulation System For A Compressor

#128
20080089795
2008-04-17

Water-injected compressor

#129
20070227821
2007-10-04

APPARATUS FOR CONTROLLING QUANTITY OF FEEDING OIL OF INVERTER COMPRESSOR

#130
20070163840
2007-07-19

Lubricant supply system and operating method of multisystem lubrication screw compressor

#131
20060222549
2006-10-05

Apparatus for controlling quantity of feeding oil of inverter compressor

#132
20060117790
2006-06-08

Screw compressor

#133
20050257542
2005-11-24

Compressor lubrication

#134
20050089432
2005-04-28

Method for controlling the oil recirculation in an oil-injected screw-type compressor and compressor using this method

#135
20050008513
2005-01-13

Lubricant-cooled gas compressor