ClassID:

144384

F04D29/688 - CPC Classification

Classification description:

Details, component parts, or accessories; Combating cavitation, whirls, noise, vibration or the like ; Balancing by influencing boundary layers especially adapted for liquid pumps

Recent Application in this class:
#1
20260028980
2026-01-29

CLEANING SYSTEM USED FOR VEHICLES AND CAPABLE OF SUPPRESSING VIBRATIONS AND REDUCING NOISE

#2
20240410397
2024-12-12

SHORT IMPELLER FOR A TURBOMACHINE

#3
20220154733
2022-05-19

Permanent magnet direct-drive slurry pump based on gas film drag reduction

#4
20210388858
2021-12-16

Method, system and apparatus for reducing fluid drag

#5
20210246903
2021-08-12

Electrical submersible pump with liquid-gas homogenizer

#6
20210003138
2021-01-07

Pump with housing having internal grooves

#7
20190360495
2019-11-28

Suction pipe inlet device for centrifugal pump

#8
20190120242
2019-04-25

Low inlet vorticity impeller having enhanced hydrodynamic wear characteristics

#9
20190055956
2019-02-21

Centrifugal turbo machinery

#10
20180223875
2018-08-09

Short impeller for a turbomachine

#11
20170143884
2017-05-25

Centrifugal pump

#12
20160131157
2016-05-12

Propeller pump for pumping liquid

#13
20150300371
2015-10-22

Pumping apparatus having a flow guiding element

#14
20140056696
2014-02-27

Pump device and pump system

#15
20130330185
2013-12-12

Inducer with cavitation instability controls to reduce vibrations and radial loads

#16
20130269817
2013-10-17

Pump suction pipe

#17
20130101396
2013-04-25

FAN ASSEMBLY

#18
20130058777
2013-03-07

SUBMERSIBLE PUMP STAGE

#19
20120261084
2012-10-18

System and method for the pumped feed of chips to a continuous digester

#20
20110027076
2011-02-03

Counter rotation inducer housing

#21
20090213686
2009-08-27

Method and Apparatus for Feeding Gaseous or Liquid Fluid into a Medium

#22
20080199300
2008-08-21

System and method of pumping while reducing secondary flow effects

#23
20060102800
2006-05-18

Method and apparatus for modulating flow separation

#24
20050265866
2005-12-01

Centrifugal pump intake channel

#25
20050238483
2005-10-27

Turbomachine with fluid removal

#26
20050152775
2005-07-14

Secondary flow control system

#27
20050129500
2005-06-16

Inducer tip vortex suppressor