ClassID:

142981

F04B39/0284 - 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 Constructional details, e.g. reservoirs in the casing

Sub-classes:
Recent Application in this class:
#1
20260117759
2026-04-30

CONNECTION ASSEMBLY AND COMPRESSOR

#2
20260104041
2026-04-16

COMPRESSOR, REFRIGERATION DEVICE AND OIL STABILIZING RING

#3
20260078747
2026-03-19

COMPRESSOR OIL INJECTION COOLING

#4
20250215870
2025-07-03

DEVICE FOR COMPRESSING A GAS AND METHOD OF ASSEMBLING SUCH DEVICE

#5
20250198401
2025-06-19

LUBRICATION SYSTEM FOR PUMP DRIVE

#6
20250075604
2025-03-06

FRACTURING APPARATUS AND CONTROL METHOD THEREOF, FRACTURING SYSTEM

#7
20250052236
2025-02-13

OIL SUPPLY DEVICE FOR COMPRESSOR, COMPRESSOR, AND REFRIGERATION EQUIPMENT

#8
20240418158
2024-12-19

RECIPROCATING COMPRESSOR

#9
20240068461
2024-02-29

Compressor crankcase oil reclamation system

#10
20240035363
2024-02-01

Fracturing apparatus and control method thereof, fracturing system

#11
20230198339
2023-06-22

Fluid plate assembly

#12
20230065792
2023-03-02

SYSTEM FOR TRANSPORTING LUBRICATING OIL IN A COMPRESSOR

#13
20220412352
2022-12-29

Compressor having orbiting scroll supply hole to lubricate thrust surface

#14
20220333471
2022-10-20

Fracturing apparatus and control method thereof, fracturing system

#15
20220298906
2022-09-22

Fracturing apparatus and control method thereof, fracturing system

#16
20220025876
2022-01-27

COMPRESSOR

#17
20210372676
2021-12-02

Cooling system with supplemental oil extraction from refrigerant

#18
20210363982
2021-11-25

COMPRESSOR

#19
20210270321
2021-09-02

Liquid injection ring and refrigerant lubricated bearing assembly

#20
20210023489
2021-01-28

Oil separator and compressed air drying system

#21
20200393083
2020-12-17

PUMP WITH ANGLED DRAIN SYSTEM

#22
20200270541
2020-08-27

OXIDE FILM FORMED ON SURFACE OF BASE MATERIAL THAT IS IRON-BASED SINTERED BODY, SLIDING MEMBER ON WHICH OXIDE FILM IS FORMED, AND APPARATUS INCLUDING SLIDING MEMBER

#23
20200224944
2020-07-16

Cooling system with supplemental oil extraction from refrigerant

#24
20200166254
2020-05-28

Linear compressor

#25
20200166250
2020-05-28

Refrigerant compressor with gas equalizer duct

#26
20200141617
2020-05-07

Lubrication supply system

#27
20200141399
2020-05-07

Lattice-cored additive manufactured compressor components with fluid delivery features

#28
20200088180
2020-03-19

Compressor having oil guide path

#29
20190376519
2019-12-12

Compressor having controllable oil supply and vehicle

#30
20190301448
2019-10-03

Self-lubricating pump throat seal

#31
20190257302
2019-08-22

Refrigeration system and the lubrication method thereof

#32
20190242382
2019-08-08

Air compressor

#33
20190105585
2019-04-11

Anti-foaming pipe and compressor system

#34
20190093647
2019-03-28

Lubricating oil supply apparatus and compressor using lubricating oil supply apparatus

#35
20190032666
2019-01-31

Refrigerant compressor unit

#36
20180320672
2018-11-08

Compressor with flooded start control

#37
20180245576
2018-08-30

Refrigerant compressor and refrigeration device including refrigerant compressor

#38
20180230985
2018-08-16

Compressor comprising an upper shell and a lower shell wherein the upper shell comprises an upper protrusion comprising a first protrusion and a second protrusion comprising a transition and an approximately flat shape

#39
20180202424
2018-07-19

COMPRESSOR

#40
20180195505
2018-07-12

Compressor

#41
20180195503
2018-07-12

FLUID COMPRESSOR

#42
20180136124
2018-05-17

Oil sensor for a compressor

#43
20180128253
2018-05-10

Compressor system for generating compressed air, as well as method for operating a compressor system that generates compressed air

#44
20180128226
2018-05-10

Oil lubricated common rail diesel pump

#45
20180045368
2018-02-15

Pump with angled drain system

#46
20180010691
2018-01-11

Packing case for reciprocating machine and method of assembling the same

#47
20180010601
2018-01-11

Mud pump sealing assembly

#48
20180001246
2018-01-04

Compressor low cost oil filter

#49
20170321937
2017-11-09

Linear compressor

#50
20170268513
2017-09-21

Suction line arrangement for multiple compressor system

#51
20170246568
2017-08-31

Oil separator and compressed air drying system

#52
20170241412
2017-08-24

Piston compressor and refrigeration system having the same

#53
20170184086
2017-06-29

Lattice-cored additive manufactured compressor components with fluid delivery features

#54
20170167479
2017-06-15

Reciprocating compressor crankshaft adapter and method

#55
20170089340
2017-03-30

Compressor having oil-level sensing system

#56
20170051645
2017-02-23

Compressor and oil drain system

#57
20170016438
2017-01-19

Compressor system including a plurality of compressors

#58
20170016437
2017-01-19

Compressor with crankshaft and insert

#59
20160319816
2016-11-03

Compressor having oil-level sensing system

#60
20160312782
2016-10-27

Method of improving compressor bearing reliability

#61
20160312781
2016-10-27

Refrigerant compressor lubricant viscosity enhancement

#62
20160252093
2016-09-01

Compressor assembly with liquid sensor

#63
20160252092
2016-09-01

Compressor assembly with liquid sensor

#64
20160186756
2016-06-30

Compressor system with variable blowdown control

#65
20160186736
2016-06-30

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

#66
20160167869
2016-06-16

LUBRICANT DISPENSING CARTRIDGE

#67
20160032913
2016-02-04

Reciprocating Compressor Frame

#68
20160017874
2016-01-21

Slide member, refrigerant compressor incorporating slide member, refrigerator and air conditioner

#69
20150369233
2015-12-24

Compressor having oil separator

#70
20150338142
2015-11-26

Compressor low cost oil filter

#71
20150167670
2015-06-18

Compressor

#72
20150147203
2015-05-28

Compressor

#73
20150052936
2015-02-26

Sealed compressor and vapor compression refrigeration cycle apparatus including the sealed compressor

#74
20150030478
2015-01-29

Sealed compressor and refrigeration unit comprising sealed compressor

#75
20150004027
2015-01-01

Linear compressor

#76
20140314589
2014-10-23

Hermetic reciprocating compressor

#77
20140178226
2014-06-26

HYDRAULIC PUMP FOR EXCAVATOR AND EXCAVATOR COMPRISING THE SAME

#78
20140000983
2014-01-02

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

#79
20130287603
2013-10-31

Hermetic reciprocating compressor

#80
20120100021
2012-04-26

HERMETIC COMPRESSOR

#81
20120051949
2012-03-01

Reciprocating compressor crankshaft adapter and method

#82
20120011876
2012-01-19

Discharge muffler and two-stage compressor including the same

#83
20110005266
2011-01-13

Reciprocating piston compressor

#84
20100139609
2010-06-10

Lubrication apparatus of fuel pump driven by fuel pump drive cam

#85
20090100861
2009-04-23

COMPRESSOR

#86
20080168898
2008-07-17

Air compressor

#87
20080034783
2008-02-14

Compressor having a drive mechanism and a lubricant separator

#88
20070089382
2007-04-26

Reciprocating Compressor and Filter Therefor

#89
20060180018
2006-08-17

RECIPROCATING COMPRESSOR FRAME

#90
20060104839
2006-05-18

Air compressor including a disk oil slinger assembly

#91
20060093496
2006-05-04

Linear compressor

#92
20050175492
2005-08-11

Hermetic compressor

#93
20050011704
2005-01-20

Compressor