Patents-Review.com
ClassID:

142971 ⎘

F04B39/0207 - CPC Classification

Classification description:

Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups -; Lubrication with lubrication control systems

Recent Application in this class:
#1
20260104043
2026-04-16

ELECTRIC PUMP AND CONTROL DEVICE

 #2
20250198407
2025-06-19

AIREND HAVING A LUBRICANT FLOW VALVE AND CONTROLLER

 #3
20250198401
2025-06-19

LUBRICATION SYSTEM FOR PUMP DRIVE

 #4
20250146486
2025-05-08

METHOD FOR CONTROLLING A FIRST REFERENCE TEMPERATURE IN A DEVICE FOR COMPRESSING GAS

 #5
20240200545
2024-06-20

METHOD FOR MONITORING THE OIL LEVEL OF AN OIL-LUBRICATED COMPRESSOR, OIL LEVEL MONITORING SYSTEM FOR CARRYING OUT THE METHOD AND COMPRESSOR SYSTEM HAVING SUCH AN OIL LEVEL MONITORING SYSTEM

 #6
20240011489
2024-01-11

Airend having a lubricant flow valve and controller

 #7
20230366400
2023-11-16

Gas compressor

 #8
20230184036
2023-06-15

Lubricating downhole-type rotating machines

 #9
20230017093
2023-01-19

Airend having a lubricant flow valve and controller

 #10
20220412333
2022-12-29

PISTON COMPRESSOR AND METHOD FOR OPERATING A PISTON COMPRESSOR

 #11
20220307359
2022-09-29

Control method and control device applied to electric fracturing apparatus

 #12
20220243964
2022-08-04

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

 #13
20220099094
2022-03-31

Scroll compressor

 #14
20220056918
2022-02-24

Pump assembly and method of controlling a pump

 #15
20210372676
2021-12-02

Cooling system with supplemental oil extraction from refrigerant

 #16
20210246890
2021-08-12

Linear compressor

 #17
20210190394
2021-06-24

Turbo refrigerator and startup control method therefor

 #18
20210140240
2021-05-13

Lubricating downhole-type rotating machines

 #19
20210095657
2021-04-01

Airend having a lubricant flow valve and controller

 #20
20200325728
2020-10-15

Lubricating downhole-type rotating machines

 #21
20200232687
2020-07-23

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

 #22
20200224944
2020-07-16

Cooling system with supplemental oil extraction from refrigerant

 #23
20200200405
2020-06-25

Heat pump

 #24
20200200403
2020-06-25

Multi-split system and method and apparatus for adjusting oil volume of compressor of multi-split system

 #25
20200200181
2020-06-25

Oil control for climate-control system

 #26
20200200160
2020-06-25

Oil control for climate-control system

 #27
20200191416
2020-06-18

Heat pump

 #28
20200116138
2020-04-16

Linear compressor

 #29
20200063987
2020-02-27

Heat pump

 #30
20200025187
2020-01-23

Linear compressor

 #31
20200003464
2020-01-02

OIL DISTRIBUTING DEVICE AND REFRIGERATION SYSTEM HAVING THE OIL DISTRIBUTING DEVICE

 #32
20190323497
2019-10-24

Multiple-compressor system with suction valve and method of controlling suction valve

 #33
20190242382
2019-08-08

Air compressor

 #34
20190211815
2019-07-11

BYPASS SYSTEM FOR REGULATING LUBRICATION OF RECIPROCATING MACHINES

 #35
20190093658
2019-03-28

Lubricating oil supply apparatus and compressor using lubricating oil supply apparatus

 #36
20190032666
2019-01-31

Refrigerant compressor unit

 #37
20190024651
2019-01-24

Air compressor having an oil separator, an oil cooler, first and second evaporators, and wherein intake air and the oil are simultaneously cooled in the first and second evaporators

 #38
20190024547
2019-01-24

Continuous reservoir level monitoring

 #39
20180347556
2018-12-06

Compressor, refrigerant compressing apparatus, and refrigerating apparatus

 #40
20180340526
2018-11-29

METHOD AND APPARATUS FOR COMMON PRESSURE AND OIL EQUALIZATION IN MULTI-COMPRESSOR SYSTEMS

 #41
20180298905
2018-10-18

Refrigerant compressor system

 #42
20180163871
2018-06-14

Device and method for extending the lifespan of a shaft seal for an open-drive compressor

 #43
20180058733
2018-03-01

Method for operating an oil level regulator

 #44
20180017062
2018-01-18

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

 #45
20180010601
2018-01-11

Mud pump sealing assembly

 #46
20170355921
2017-12-14

Compressor for refrigeration and air conditioning, and refrigeration and air conditioning device

 #47
20170328583
2017-11-16

Heat pump

 #48
20170328582
2017-11-16

Heat Pump

 #49
20170328581
2017-11-16

Heat pump

 #50
20170211855
2017-07-27

Oil distribution in multiple-compressor systems utilizing variable speed

 #51
20170122300
2017-05-04

Variable displacement swash plate compressor

 #52
20170089340
2017-03-30

Compressor having oil-level sensing system

 #53
20170022984
2017-01-26

POROUS OIL FLOW CONTROLLER

 #54
20170016438
2017-01-19

Compressor system including a plurality of compressors

 #55
20160319816
2016-11-03

Compressor having oil-level sensing system

 #56
20160273818
2016-09-22

Compressor crankcase heating control systems and methods

 #57
20160252093
2016-09-01

Compressor assembly with liquid sensor

 #58
20160252092
2016-09-01

Compressor assembly with liquid sensor

 #59
20160194986
2016-07-07

Network device and communication control method

 #60
20160186757
2016-06-30

Compressor with a closed loop water cooling system

 #61
20160186756
2016-06-30

Compressor system with variable blowdown control

 #62
20160186736
2016-06-30

Check valve and method and apparatus for extending life of check valve

 #63
20150369233
2015-12-24

Compressor having oil separator

 #64
20150337964
2015-11-26

Device and method for extending the lifespan of a shaft seal for an open-drive compressor

 #65
20150125311
2015-05-07

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

 #66
20150086388
2015-03-26

Compressor comprising purging and method for purging the compressor housing with purge gas

 #67
20150075205
2015-03-19

Compressor crankcase heating control systems and methods

 #68
20150064040
2015-03-05

Compressor assembly with liquid sensor

 #69
20150030468
2015-01-29

Compressor device and method for controlling such a compressor device

 #70
20140234134
2014-08-21

Pressurized oil delivery system for a reciprocating air compressor

 #71
20140154105
2014-06-05

Oil balancing apparatus and refrigeration device

 #72
20140056727
2014-02-27

Refrigerant compressor and refrigeration cycle apparatus using the same

 #73
20140010670
2014-01-09

Packing lubrication system

 #74
20140000983
2014-01-02

Check valve and method and apparatus for extending life of check valve

 #75
20130330210
2013-12-12

Compression device, and thermodynamic system comprising such a compression device

 #76
20130136622
2013-05-30

Compression device and a thermodynamic system comprising such a compression device

 #77
20130115063
2013-05-09

Oil management system for a compressor

 #78
20120321486
2012-12-20

Compressor system including a flow and temperature control device

 #79
20120207621
2012-08-16

Method and equipment for controlling operating temperature of air compressor

 #80
20120183419
2012-07-19

HERMETIC COMPRESSOR

 #81
20110239672
2011-10-06

Oil level detecting device for a compressor and an air conditioning system having the same

 #82
20110158840
2011-06-30

Oil recovery member, and motor mechanism and compressor using the same

 #83
20110097216
2011-04-28

LUBRICATION SYSTEM FOR SUBSEA COMPRESSOR

 #84
20110081254
2011-04-07

COMPRESSOR FOR A REFRIGERATION CYCLE, REFRIGERATION CYCLE AND METHOD FOR OPERATING THE SAME

 #85
20110075700
2011-03-31

Method for sensing a fluid in a compressor shell

 #86
20110075699
2011-03-31

Method for sensing a fluid in a compressor shell

 #87
20110005266
2011-01-13

Reciprocating piston compressor

 #88
20100196170
2010-08-05

System and method for monitoring and controlling oil return to compressor

 #89
20100186439
2010-07-29

Fluid machine and refrigeration cycle apparatus

 #90
20100101269
2010-04-29

COMPRESSOR WITH IMPROVED OIL SEPARATION

 #91
20090324428
2009-12-31

System and method for detecting a fault condition in a compressor

 #92
20090324427
2009-12-31

System and method for starting a compressor

 #93
20090324426
2009-12-31

Compressor speed control system for bearing reliability

 #94
20090246060
2009-10-01

Compressor

 #95
20090087320
2009-04-02

Oil-cooled air compressor

 #96
20090007588
2009-01-08

Oil balance system and method for compressors

 #97
20080283133
2008-11-20

Oil balance system and method for compressors connected in series

 #98
20080250798
2008-10-16

Method for sensing the liquid level in a compressor

 #99
20080230317
2008-09-25

Oil Circulation System For A Compressor

 #100
20080085195
2008-04-10

Oil balance system and method for compressors connected in series

 #101
20060073026
2006-04-06

Oil balance system and method for compressors connected in series

 #102
20060070398
2006-04-06

Compressor intended to compress coolant fluid for a refrigeration or air conditioning installation

 #103
20060018763
2006-01-26

Hermetic compressor

 #104
20050279111
2005-12-22

Air conditioner and method for performing oil equalizing operation in the air conditioner

 #105
20050252224
2005-11-17

Method of controlling compressor and controller

 #106
20050186095
2005-08-25

Lubrication system for compressor

 #107
20050175492
2005-08-11

Hermetic compressor

 #108
20050072183
2005-04-07

Oil equalizing system for multiple compressors

 #109
20050011704
2005-01-20

Compressor

 #110
20050008513
2005-01-13

Lubricant-cooled gas compressor

 #111
20050008503
2005-01-13

Compressor heat regenerative system

 #112
17989082
2024-03-05

Lube oil replenishment for compressors