ClassID:

144307

F04D29/448 - CPC Classification

Classification description:

Details, component parts, or accessories; Casings; Connections of working fluid for radial or helico-centrifugal pumps; Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers

Recent Application in this class:
#1
20260043417
2026-02-12

PUMP DIFFUSER ANTI-ROTATION AND ALIGNMENT ASSEMBLY

#2
20250341156
2025-11-06

DOWNHOLE CENTRIFUGAL PUMPS INCLUDING LOCKING FEATURES AND RELATED COMPONENTS AND METHODS

#3
20250288180
2025-09-18

Water Flow System for Washer, and Washer

#4
20250163933
2025-05-22

FIRE PUMP FOR FIRE FIGHTING SYSTEM

#5
20250129793
2025-04-24

PARALLEL FLOW PUMP

#6
20250129786
2025-04-24

ELECTRICAL AUTOMOTIVE LIQUID PUMP

#7
20250122879
2025-04-17

FLUID PUMP ASSEMBLY

#8
20240384729
2024-11-21

Higher Work Output Centrifugal Pump Stage

#9
20240309875
2024-09-19

CRUDE OIL EXTRACTION PUMP

#10
20240229624
2024-07-11

DOWNHOLE CENTRIFUGAL PUMPS INCLUDING LOCKING FEATURES AND RELATED COMPONENTS AND METHODS

#11
20240175339
2024-05-30

High volume axial flow electric submersible pump (ESP) pump stage

#12
20240167477
2024-05-23

Aquarium fluid pump assembly with magnectic rotator

#13
20240141919
2024-05-02

CENTRIFUGAL PUMP STAGE DIFFUSER

#14
20240125220
2024-04-18

SEALS FOR ELECTRIC SUBMERSIBLE PUMPS

#15
20240009443
2024-01-11

Systems and methods for pump-assisted blood circulation

#16
20230380655
2023-11-30

Centrifugal pump diffuser housings

#17
20230074178
2023-03-09

Parallel flow pump

#18
20230044897
2023-02-09

Pressure wall for a fluid pump and a pump including the pressure wall

#19
20230032288
2023-02-02

A RETURN CHANNEL WITH NON-CONSTANT RETURN CHANNEL VANES PITCH AND CENTRIFUGAL TURBOMACHINE INCLUDING SAID RETURN CHANNEL

#20
20230020990
2023-01-19

Fluid pump assembly

#21
20230012388
2023-01-12

Centrifugal well pump with threadedly coupled diffusers

#22
20220397024
2022-12-15

Non-axisymmetric hub and shroud profile for electric submersible pump stage

#23
20220349422
2022-11-03

Flow corrector and pump assembly including a flow corrector

#24
20220282732
2022-09-08

Thrust handling for electric submersible pumps

#25
20220074428
2022-03-10

Heat collecting pump and domestic appliance

#26
20220065266
2022-03-03

Downhole centrifugal pump diffuser with protuberant vanes and related pumps and methods

#27
20210310490
2021-10-07

Swimming pool and spa pumps configured to improve priming performance

#28
20210228058
2021-07-29

Dishwashing appliance and electric motor for a fluid pump with a thermal-protection assembly

#29
20210172441
2021-06-10

Energy-conserving fluid pump

#30
20210039194
2021-02-11

Method of manufacturing a component of a rotary machine and component manufactured using said method

#31
20200340481
2020-10-29

PERMANENT MAGNET PUMP WITH BEARINGS SEPARATING MODULAR SECTIONS

#32
20200300265
2020-09-24

Downhole centrifugal pump diffuser with protuberant vanes

#33
20200256191
2020-08-13

BOUNDARY LAYER TURBOMACHINE

#34
20200215245
2020-07-09

Cardiac pump having a turbine with internal blades

#35
20200149549
2020-05-14

VORTEX ADAPTION PREVENTER

#36
20200095996
2020-03-26

Fluid pump assembly

#37
20200032814
2020-01-30

WATER PUMP HAVING DIRECTION ADJUSTING MECHANISM

#38
20190338654
2019-11-07

Non-Metallic Vertical Turbine Pump

#39
20190264690
2019-08-29

Multistage centrifugal grinder pump

#40
20190211837
2019-07-11

Impeller and rotating machine

#41
20190128284
2019-05-02

LIQUID HEATING PUMP FOR CONVEYING AND HEATING LIQUID IN A HOUSEHOLD APPLIANCE WHICH USES WATER

#42
20190093671
2019-03-28

Liquid heating pump for conveying and heating liquid in a water-bearing domestic appliance

#43
20190046001
2019-02-14

Pump assembly for a dishwashing appliance

#44
20190046000
2019-02-14

Pump assembly for a dishwashing appliance

#45
20190017509
2019-01-17

Fluid pump assembly

#46
20180258950
2018-09-13

Flow control structures for turbomachines and methods of designing the same

#47
20180238332
2018-08-23

Centrifugal pump

#48
20180100508
2018-04-12

Relating to pumps

#49
20180087532
2018-03-29

Centrifugal pump for conveying a fluid

#50
20170356456
2017-12-14

HIGH-CAPACITY FLUID PUMP

#51
20170341178
2017-11-30

Method of manufacturing a component of a rotary machine and component manufactured using said method

#52
20170298940
2017-10-19

Shred and shear pump

#53
20170248159
2017-08-31

Anti-swirl rib system for a pump

#54
20170241424
2017-08-24

Apertures spaced around impeller bottom shroud of centrifugal pump

#55
20170184109
2017-06-29

Turbopump with axially curved vane

#56
20170175757
2017-06-22

Rotodynamic Pumps that Resist Clogging

#57
20170122333
2017-05-04

Oil and gas well pump components and method of coating such components

#58
20170108007
2017-04-20

Centrifugal pump assembly comprising at least one impeller producing flow through and an annular space divided by at least two guide vanes into part-annular-spaces

#59
20170097010
2017-04-06

Structures and methods for forcing coupling of flow fields of adjacent bladed elements of turbomachines, and turbomachines incorporating the same

#60
20170067481
2017-03-09

Volute Design For Lower Manufacturing Cost and Radial Load Reduction

#61
20170045057
2017-02-16

Pump intake device

#62
20170030377
2017-02-02

ARRANGEMENT OF COMPONENTS IN A FLUID ENERGY MACHINE AND ASSEMBLY METHOD

#63
20170016457
2017-01-19

Flow control structures for turbomachines and methods of designing the same

#64
20160348686
2016-12-01

Screw pump and impeller fan assemblies and method of operating

#65
20160258442
2016-09-08

Boundary layer turbomachine

#66
20160237830
2016-08-18

Non-metallic vertical turbine pump

#67
20160222789
2016-08-04

Structures and methods for forcing coupling of flow fields of adjacent bladed elements of turbomachines, and turbomachines incorporating the same

#68
20160174806
2016-06-23

Pump plate for conditioning fluid flow in a dishwasher

#69
20160115998
2016-04-28

Electric submersible pump assembly bearing

#70
20150377255
2015-12-31

Shred and shear pump

#71
20150369073
2015-12-24

Flow control structures for turbomachines and methods of designing the same

#72
20150354590
2015-12-10

Diffuser vanes with pockets for submersible well pump

#73
20150354558
2015-12-10

Volute pump

#74
20150337859
2015-11-26

Heater pump

#75
20150308446
2015-10-29

IMPELLER FOR A CENTRIFUGAL PUMP, A CENTRIFUGAL PUMP AND A USE THEREOF

#76
20150300371
2015-10-22

Pumping apparatus having a flow guiding element

#77
20150071774
2015-03-12

Centrifugal pump

#78
20140348675
2014-11-27

Pump

#79
20140271107
2014-09-18

Systems and methods for preventing damage to pump diffusers

#80
20140234143
2014-08-21

Magnetic pump assembly with shaft and axle arrangement

#81
20140140837
2014-05-22

Flow conditioning feature for suction diffuser

#82
20140112755
2014-04-24

Pumps

#83
20130216370
2013-08-22

Guide ring for an impeller pump and impeller pump

#84
20130202444
2013-08-08

Blade cascade and turbomachine

#85
20130202426
2013-08-08

Pump intake device

#86
20130028719
2013-01-31

Concrete volute pump

#87
20120288385
2012-11-15

Diffuser bump vane profile

#88
20120224961
2012-09-06

Pump

#89
20120224957
2012-09-06

Pump and flow-guiding device

#90
20120213632
2012-08-23

Non-metallic vertical turbine pump

#91
20120195748
2012-08-02

Vortex prevention device and double suction vertical pump having such vortex prevention device

#92
20120128478
2012-05-24

Centrifugal pump assembly

#93
20120121402
2012-05-17

Centrifugal compressor diffuser

#94
20110311357
2011-12-22

Volute shaped pump casing for a centrifugal pump

#95
20110211982
2011-09-01

Magnetic liquid pump assembly with shaft and axle arrangement

#96
20110209346
2011-09-01

Method of setting performance characteristic of pump and method of manufacturing diffuser vane

#97
20110116934
2011-05-19

PUMPING ELEMENT DESIGN

#98
20110027076
2011-02-03

Counter rotation inducer housing

#99
20110027071
2011-02-03

MULTI-STAGE INDUCER FOR CENTRIFUGAL PUMPS

#100
20100307623
2010-12-09

Apparatus for reducing turbulence in a fluid stream

#101
20100135765
2010-06-03

Slurry pump having impeller flow elements and a flow directing device

#102
20100119363
2010-05-13

High-efficiency, multi-stage centrifugal pump and method of assembly

#103
20100014963
2010-01-21

CENTRIFUGAL PUMP

#104
20100008768
2010-01-14

Pump

#105
20090311095
2009-12-17

Centrifugal pump with segmented diffuser

#106
20090136363
2009-05-28

Multi-Stage Submersible Pump

#107
20090053073
2009-02-26

Condensate Pump

#108
20090047119
2009-02-19

SUBMERSIBLE MULTISTAGE PUMP WITH IMPELLERS HAVING DIVERGING SHROUDS

#109
20080199300
2008-08-21

System and method of pumping while reducing secondary flow effects

#110
20080166218
2008-07-10

Centrifugal pump for abrasive fluid

#111
20080080973
2008-04-03

Impeller and diffuser with a rotating and converging hub

#112
20070274828
2007-11-29

Pump and liquid supply system

#113
20070224040
2007-09-27

Centrifugal pump and method of manufacturing the same

#114
20060177305
2006-08-10

Centrifugal volute pump with discontinuous vane-island diffuser

#115
20050254941
2005-11-17

Inlet casing and suction passage structure

#116
17818360
2023-06-06

Centrifugal pump

#117
17652479
2023-08-29

Flow booster cell

#118
17102851
2021-12-07

Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear-drop shaped inner wall defined by a circular body region and a converging apex with the inner wall comprising a blocker below at least one perimeter end of one diffuser blade

#119
14796610
2017-06-13

Centrifugal pump impeller support system and apparatus