F04D29/2261 - CPC Classification Index

ClassID:

144236 ⎘

F04D29/2261 - CPC Classification

Classification description:

Details, component parts, or accessories; Rotors specially for centrifugal pumps with special measures

Sub-classes:

F04D29/2266 » {for sealing or thrust balance } 89
F04D29/2272 » {for influencing flow or boundary layer} 19
F04D29/2277 » {for increasing NPSH or dealing with liquids near boiling-point} 51
F04D29/2283 » {for reverse pumping action} 16
F04D29/2288 » {for comminuting, mixing or separating} 137
F04D29/2294 » {for protection, e.g. against abrasion} 59

Recent Application in this class:

20260132798

2026-05-14

MOTOR PUMP

20250354561

2025-11-20

METHOD FOR CONTROLLING OF A PUMP UNIT AND A PUMP UNIT FOR PUMPING LIQUID OR SUSPENSION

20250354557

2025-11-20

METHOD FOR CONTROLLING OF A PUMP UNIT AND A PUMP UNIT FOR PUMPING LIQUID OR SUSPENSION

20250101991

2025-03-27

WATER PUMP STRUCTURE AND ROTOR THEREOF

20230272803

2023-08-31

Impeller assembly for use in an aquarium filter pump and methods

20220307515

2022-09-29

Impeller assembly for use in an aquarium filter pump and methods

20220010814

2022-01-13

Levering device

20210277901

2021-09-09

Single wheel multi-stage radially-layered regenerative pump

20210190088

2021-06-24

Impeller and rotary machine

#10

20210108650

2021-04-15

Electric robot for pool cleaning

#11

20200256350

2020-08-13

Molten metal rotor with hardened top

#12

20200208645

2020-07-02

Impeller assembly for use in an aquarium filter pump and methods

#13

20200149553

2020-05-14

Rotor with balancing features and balancing method

#14

20200040916

2020-02-06

MOTOR-DRIVEN WATER LIFTING DEVICE

#15

20190345954

2019-11-14

Double-sided single impeller with dual intake pump

#16

20190211838

2019-07-11

Impeller assembly for use in an aquarium filter pump and methods

#17

20190195230

2019-06-27

CENTRIFUGAL FAN

#18

20190186838

2019-06-20

WATER-COOLING DEVICE

#19

20190113048

2019-04-18

Impeller, rotary machine, and turbocharger

#20

20190107122

2019-04-11

SLIM PUMP STRUCTURE

#21

20190093673

2019-03-28

Impeller, impeller blade wheel, air-blowing device, and method of manufacturing air-blowing device

#22

20190093665

2019-03-28

Centrifugal blower

#23

20190055956

2019-02-21

Centrifugal turbo machinery

#24

20190048886

2019-02-14

ANTI-GAS LOCK ELECTRIC SUBMERSIBLE PUMP

#25

20180340582

2018-11-29

Anti-reverse rotation apparatuses, rotors for use therein, and related methods

#26

20180291928

2018-10-11

Methods and devices for reducing circumferential pressure imbalances in an impeller side cavity of rotary machines

#27

20180258944

2018-09-13

Liquid pump including an impeller connected directly to a rotor receiving sleeve

#28

20180112673

2018-04-26

Impeller for a centrifugal headbox feed pump

#29

20180058465

2018-03-01

Molten metal rotor with hardened tip

#30

20180003182

2018-01-04

Multi-stage impeller assembly for pump

#31

20170363362

2017-12-21

WATER-COOLING DEVICE

#32

20170361001

2017-12-21

Centrifugal pumps for medical uses

#33

20170227015

2017-08-10

Centrifugal pumps having anti-air-locking features

#34

20170167498

2017-06-15

Electric submersible pump components

#35

20170138367

2017-05-18

Pump with front deflector vanes, wear plate, and impeller with pump-out vanes

#36

20170051752

2017-02-23

Horizontal pumping system with primary stage assembly and separate NPSH stage assembly

#37

20170037863

2017-02-09

Anti-icing impeller spinner

#38

20160341210

2016-11-24

Impeller

#39

20160333882

2016-11-17

Self-priming centrifugal pump

#40

20160305308

2016-10-20

VARIABLE PUMP FOR AN INTERNAL COMBUSTION ENGINE

#41

20140314572

2014-10-23

Impeller internal thermal cooling holes

#42

20140271219

2014-09-18

Molten metal rotor with hardened top

#43

20140079558

2014-03-20

Impeller for a centrifugal pump

#44

20130121821

2013-05-16

Centrifugal pump apparatus

#45

20130039785

2013-02-14

Device for Moving a Fluid

#46

20120003108

2012-01-05

Centrifugal pump apparatus

#47

20100221105

2010-09-02

Staged centrifugal pump apparatus for pumping a viscous fluid

#48

20100061841

2010-03-11

FROTH HANDLING PUMP

#49

20100028178

2010-02-04

Rotor stability of a rotary pump

#50

20100028156

2010-02-04

Impeller and pump including the same

#51

20090269201

2009-10-29

Air diffuser system for industrial pumps

#52

20090022585

2009-01-22

Rotor for a Rotary Machine and a Rotary Machine

#53

20070071617

2007-03-29

Drain pump for home appliances

#54

20060251808

2006-11-09

Protective coatings for pumps

#55

20060083642

2006-04-20

Rotor stability of a rotary pump

#56

20050281685

2005-12-22

Rotary pump with exclusively hydrodynamically suspended impeller

#57

20050265833

2005-12-01

Pump

#58

20050175455

2005-08-11

Centrifugal pump

#59

14633943

2015-12-22

Impeller balancing using additive process