ClassID:

143845

F04C2250/102 - CPC Classification

Classification description:

Geometry of the inlet or outlet of the outlet

Recent Application in this class:
#1
20250207594
2025-06-26

COMPRESSOR

#2
20250163913
2025-05-22

MIXING CHAMBER FOR GENERATING A PUMP CHARGE

#3
20250146490
2025-05-08

Parallel connected multiple shaft roots vacuum pump

#4
20240369058
2024-11-07

Single-Entry Screw Pump

#5
20240218879
2024-07-04

STATOR FOR A VACUUM PUMP

#6
20240035471
2024-02-01

Compressor with two rotors coaxially disposed on a connecting assembly sleeved on the shaft that limits relative movement between them

#7
20240011486
2024-01-11

ROTARY GEAR PUMP WITH A CENTERED DRIVE GEAR

#8
20230258178
2023-08-17

Scroll compressor and refrigeration cycle apparatus

#9
20230060242
2023-03-02

Vane pump with a notch provided at a suction port

#10
20220403845
2022-12-22

Liquid-feeding rotary-screw compressor

#11
20220389929
2022-12-08

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

#12
20220042510
2022-02-10

Screw compressor slide valve and screw compressor with gas pulsation attenuation function

#13
20220010795
2022-01-13

Vane pump with tip-end-side guide surfaces provided between inner and outer notches of the discharge port and base-end-side guide surface provided in the back pressure port

#14
20210381509
2021-12-09

Pumping unit including a rough vacuum pump and a roots vacuum pump

#15
20210372406
2021-12-02

Variable compressor housing

#16
20210324856
2021-10-21

Compressor having oil feeding channels

#17
20210277896
2021-09-09

Damping apparatus for exhaust valve in compressor, exhaust valve assembly, and compressor

#18
20210190069
2021-06-24

Screw compressor

#19
20210054844
2021-02-25

Compressor

#20
20200332799
2020-10-22

Motor vehicle vacuum pump arrangement

#21
20200284256
2020-09-10

Scroll compressor having noise reduction structure

#22
20200102958
2020-04-02

Twin shaft pumps and a method of pumping

#23
20190264688
2019-08-29

Scroll compressor having offset portion provided on discharge port to reduce backflow

#24
20190186481
2019-06-20

Cryogenic pump flange

#25
20190178084
2019-06-13

Rotary energy converter with retractable barrier

#26
20190136857
2019-05-09

Scroll compressor

#27
20190128264
2019-05-02

Oil-cooled screw compressor

#28
20190063432
2019-02-28

Scroll compressor having a central main discharge port and an auxiliary discharge port

#29
20190010945
2019-01-10

Compressor having improved discharge structure including discharge inlets, communication hole, and discharge outlet

#30
20180306148
2018-10-25

Fuel pump

#31
20180283377
2018-10-04

Electric gear pump with specific proportions for the fluid passages

#32
20180209422
2018-07-26

Scroll compressor having a capacity variable device

#33
20180135632
2018-05-17

Refrigerant path holes in a rotary compressor

#34
20180119695
2018-05-03

Gear pump and method for realising it

#35
20180106251
2018-04-19

Oil pump

#36
20180073507
2018-03-15

Scroll compressor

#37
20180073506
2018-03-15

Scroll compressor

#38
20180073505
2018-03-15

Scroll compressor

#39
20180058452
2018-03-01

Screw compressor having a discharging passage with enlarged cross section area

#40
20170335848
2017-11-23

Rotary compressor having communication path hole overlap with discharge chamber concave portion

#41
20170321698
2017-11-09

System and Method for Improved Performance of Gerotor Compressors and Expanders

#42
20170284398
2017-10-05

Rotary pump having a casing being formed with a communicating hole communicating a space that is between the side plate and the wall surface of the driving machine

#43
20170175739
2017-06-22

Vane pump device having two different discharge amounts

#44
20170074269
2017-03-16

Rotary compressor

#45
20160333876
2016-11-17

Vane pump

#46
20160326875
2016-11-10

Rotary energy converter with retractable barrier

#47
20160305425
2016-10-20

Fluid pump

#48
20160230758
2016-08-11

Vane pump

#49
20160201675
2016-07-14

Rotary pump having a casing being formed with a communicating hole communicating a space that is between the side plate and the wall surface of the driving machine

#50
20160084249
2016-03-24

Variable displacement vane pump

#51
20150267702
2015-09-24

Gerotor with reduced leakage

#52
20150240813
2015-08-27

Electric gear pump with specific proportions for the fluid passages

#53
20150219097
2015-08-06

Gear pump including an inner rotor having a plurality of teeth

#54
20150211508
2015-07-30

COMPRESSOR

#55
20150147213
2015-05-28

Gas compressor

#56
20150139845
2015-05-21

Housing for a rotary vane pump

#57
20150064042
2015-03-05

Gas compressor having an asymmetric cylinder chamber

#58
20150056090
2015-02-26

Variable capacity type vane pump

#59
20150004015
2015-01-01

Sound absorber for refrigerant compressor

#60
20140308150
2014-10-16

Gear pump having grooved mounting adapter

#61
20140294644
2014-10-02

Pump having an inner and outer rotor

#62
20140102402
2014-04-17

Rotary energy converter with retractable barrier

#63
20140023539
2014-01-23

Variable oil pump with improved partitioning section

#64
20130101412
2013-04-25

Vacuum pump having rotary compressing elements

#65
20130045126
2013-02-21

Tapered sound outlet vane pump

#66
20120315177
2012-12-13

Engine oil pump including plunge pool to mitigate surge noise

#67
20120251369
2012-10-04

Scroll compressor and method for machining discharge port of the same

#68
20120207638
2012-08-16

Rotary piston pump having converging inlet and outlet openings for conveying a fluid medium containing solids

#69
20120093671
2012-04-19

Compressor having outlet with gap to enhance volumetric efficiency

#70
20110262292
2011-10-27

Vane air motor

#71
20110236245
2011-09-29

Rotary compressor with improved oil retention

#72
20110167822
2011-07-14

Fluid Machine

#73
20110129378
2011-06-02

Horizontal scroll compressor

#74
20110064597
2011-03-17

Optimized discharge port for scroll compressor with tip seals

#75
20110033327
2011-02-10

Scroll compressor with noise reducing discharge opening

#76
20110027115
2011-02-03

Scroll compressor

#77
20100278675
2010-11-04

2 stage rotary compressor

#78
20100278674
2010-11-04

2 stage rotary compressor

#79
20100209277
2010-08-19

SCROLL COMPRESSOR

#80
20100170469
2010-07-08

Rotary energy converter with retractable barrier

#81
20100166591
2010-07-01

Positive displacement rotary components having main and gate rotors with axial flow inlets and outlets

#82
20100086402
2010-04-08

High efficiency supercharger outlet

#83
20100008811
2010-01-14

Screw compressor having rotor casing with removable discharge opening neighborhood portion

#84
20090269232
2009-10-29

Variable displacement vane pump with enhanced discharge port

#85
20080080984
2008-04-03

EVACUATION APPARATUS

#86
20080080982
2008-04-03

EVACUATION APPARATUS

#87
20080075609
2008-03-27

Compressor

#88
20080008608
2008-01-10

Compressor, method for manufacturing the compressor, defroster of refrigerant circuit, and refrigerant unit

#89
20070092393
2007-04-26

Gas release port for oil-free screw compressor

#90
20070036668
2007-02-15

Scroll compressor discharge port improvements

#91
20060251534
2006-11-09

Discharge diffuser for screw compressor

#92
20060216187
2006-09-28

Oil pump

#93
20060182645
2006-08-17

Scroll-type fluid machine

#94
20060171819
2006-08-03

Compressor discharge muffler

#95
20060168994
2006-08-03

Compressor, method for manufacturing the compressor, defroster of refrigerant circuit, and refrigerant unit

#96
20060150948
2006-07-13

Rotary internal combustion engine

#97
20060150670
2006-07-13

Refrigeration Apparatus

#98
20050106054
2005-05-19

Compressor discharge chamber with baffle plate

#99
20050106044
2005-05-19

Oil pump