Patents-Review.com
ClassID:

143843 ⎘

F04C2250/10 - CPC Classification

Classification description:

Geometry of the inlet or outlet

Sub-classes:
Recent Application in this class:
#1
20250146490
2025-05-08

Parallel connected multiple shaft roots vacuum pump

 #2
20250146489
2025-05-08

ROTARY PISTON COMPRESSOR/PUMP/BLOWER WITH A VENTILATION CHANNEL

 #3
20240369058
2024-11-07

Single-Entry Screw Pump

 #4
20240133378
2024-04-25

Scroll compressor having injection passage containing muffler

 #5
20240110564
2024-04-04

Rotary piston compressor/pump/blower with a ventilation channel

 #6
20240084800
2024-03-14

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

 #7
20230108147
2023-04-06

Flow channeling structure

 #8
20230060242
2023-03-02

Vane pump with a notch provided at a suction port

 #9
20230017937
2023-01-19

Rotary piston compressor/pump/blower with a ventilation channel

 #10
20220381240
2022-12-01

Oil pump with straightening member branching the suction passage

 #11
20220307496
2022-09-29

Electric pump including a motor unit and an axially extending attachment surface

 #12
20210180597
2021-06-17

Vane compressor with elastic member protruding into the cylinder

 #13
20210108560
2021-04-15

Rotary piston compressor/pump/blower with a ventilation channel

 #14
20210095665
2021-04-01

Vane pump including fluid communication passages for routing fluid received from two inflow passages around outer peripheral surface of the entire perimeter of the cam ring

 #15
20200300243
2020-09-24

Enhancing fluid flow in gerotor systems

 #16
20200080557
2020-03-12

MOTOR-OPERATED COMPRESSOR

 #17
20200011328
2020-01-09

Scroll compressor

 #18
20190376514
2019-12-12

Compressor

 #19
20190360485
2019-11-28

SCREW SPINDLE PUMP

 #20
20190345934
2019-11-14

Co-rotating scroll compressor

 #21
20190277284
2019-09-12

Dual-vane scroll compressor with capacity modulation

 #22
20190271312
2019-09-05

Scroll compressor with integral driving shaft and eccentric shaft

 #23
20190186481
2019-06-20

Cryogenic pump flange

 #24
20190017505
2019-01-17

Automotive electrical oil pump

 #25
20180306183
2018-10-25

Pump

 #26
20180291897
2018-10-11

Impeller pump having different geometries of the inlet and outlet openings

 #27
20180283377
2018-10-04

Electric gear pump with specific proportions for the fluid passages

 #28
20180112588
2018-04-26

Method of supercharging an internal combustion engine

 #29
20180106184
2018-04-19

Screw air compressor with bypass

 #30
20180017060
2018-01-18

Variable volume ratio compressor

 #31
20180010607
2018-01-11

Fuel pump and manufacturing method thereof

 #32
20170350393
2017-12-07

Cylinder rotary compressor having an inlet of the rotor-side suction passage opened at the rotor-side concave portion and communicating with a rotor-side communication space therein

 #33
20170321698
2017-11-09

System and Method for Improved Performance of Gerotor Compressors and Expanders

 #34
20160258435
2016-09-08

Claw pump

 #35
20160010642
2016-01-14

Variable displacement vane pump

 #36
20150369241
2015-12-24

Screw pump

 #37
20150267702
2015-09-24

Gerotor with reduced leakage

 #38
20150240813
2015-08-27

Electric gear pump with specific proportions for the fluid passages

 #39
20150030486
2015-01-29

Variable capacity vane pump with a rotor and a cam ring rotatable eccentrically relative to a center of the rotor

 #40
20150004015
2015-01-01

Sound absorber for refrigerant compressor

 #41
20140308589
2014-10-16

Fluid compressor and fuel cell vehicle

 #42
20140044583
2014-02-13

Process for manufacturing casing, and vacuum pump

 #43
20130315770
2013-11-28

Pump assembly for a vehicle

 #44
20130302196
2013-11-14

Multi-channel, rotary, progressing cavity pump with multi-lobe inlet and outlet ports

 #45
20130247866
2013-09-26

Port for rotary internal combustion engine

 #46
20130034462
2013-02-07

Fluid energy transfer device

 #47
20130017109
2013-01-17

Fluid compressor or pump apparatus

 #48
20130011289
2013-01-10

Fluid compressor and/or pump arrangement

 #49
20120077104
2012-03-29

FLUID COMPRESSOR AND FUEL CELL VEHICLE

 #50
20110293458
2011-12-01

Sliding vane pump with improved rotor profile

 #51
20110262290
2011-10-27

Screw compressor with asymmetric ports

 #52
20110256011
2011-10-20

Slide for use in a screw compressor

 #53
20110194968
2011-08-11

Oil pump

 #54
20110097231
2011-04-28

Variable displacement vane pump

 #55
20110027114
2011-02-03

Scroll fluid machine having multiple discharge ports

 #56
20110002803
2011-01-06

EXPANDER

 #57
20100329900
2010-12-30

Pump for pumping fluid in a wellbore using a fluid displacer means

 #58
20100300402
2010-12-02

Rotary piston for a rotary piston engine and rotary piston engine

 #59
20100242531
2010-09-30

Multi-stage rotary-type fluid machine and refrigeration cycle apparatus

 #60
20100215537
2010-08-26

Gear pump with improved inlet port

 #61
20100196138
2010-08-05

MACHINE FOR DISPLACING FLUID

 #62
20090081052
2009-03-26

Variable displacement pump

 #63
20080219874
2008-09-11

Variable displacement vane pump

 #64
20080069707
2008-03-20

Positive displacement pump apparatus and method

 #65
20080056927
2008-03-06

Rotary pump having sinusoidal sealing lines

 #66
20070217940
2007-09-20

PNEUMATIC TOOL WITH PRESSURE-STABILIZING CYLINDER

 #67
20070217937
2007-09-20

Oilless rotary vane pump having open ends of vane grooves being inclined rearward in the rotation direction

 #68
20060292000
2006-12-28

Liquid ring pump

 #69
20060216162
2006-09-28

Pump for pumping fluids

 #70
20060153706
2006-07-13

Internal gear-wheel pump comprising reinforced channels

 #71
20050129560
2005-06-16

Compressed air motor

 #72
20050123429
2005-06-09

Compressor and a method for compressing fluid

 #73
20050042126
2005-02-24

Vane type rotary machine

 #74
20050019195
2005-01-27

Rotary piston pump