ClassID:

144291

F04D29/4233 - CPC Classification

Classification description:

Details, component parts, or accessories; Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps; Fan casings with volutes extending mainly in axial or radially inward direction

Recent Application in this class:
#1
20260055777
2026-02-26

Housing for Centrifugal Compressor, Centrifugal Compressor, and Method for Producing a Housing for a Centrifugal Compressor

#2
20250314256
2025-10-09

FAN IMPELLER WITH TURBULANCE-REDUCING BLADES

#3
20250129796
2025-04-24

BLOWER DEVICE AND RESPIRATOR INCLUDING BLOWER DEVICE

#4
20240352944
2024-10-24

RADIAL FAN WITH TAPERED TONGUE GEOMETRY

#5
20240301893
2024-09-12

Fan assembly and air conditioner

#6
20240229823
2024-07-11

CROSS-FLOW AIR DUCT AND AIR OUTLET DEVICE

#7
20240209862
2024-06-27

Centrifugal compressor with reverse overhung volute

#8
20240110579
2024-04-04

COMPRESSOR

#9
20230375002
2023-11-23

Blower housing for blower of HVAC system

#10
20230349395
2023-11-02

Blower device and respirator including blower device

#11
20230330369
2023-10-19

FAN UNIT WITH IMPROVED SURGE CHARACTERISTICS

#12
20230243568
2023-08-03

AIR-COOLED REFRIGERATOR SUPPLYING AIR THROUGH CENTRIFUGAL FAN

#13
20230220800
2023-07-13

Recovered-cycle aircraft turbomachine

#14
20230175523
2023-06-08

Shaftless rotary machine

#15
20230151821
2023-05-18

AIR-CONDITIONING APPARATUS AND REFRIGERATION CYCLE APPARATUS [AS AMENDED]

#16
20230137972
2023-05-04

Centrifugal compressor with reverse overhung volute

#17
20230057952
2023-02-23

Blower housing for blower of HVAC system

#18
20220372991
2022-11-24

Air duct component for cross-flow impeller and air conditioning apparatus having same

#19
20220074425
2022-03-10

Induced draft fan

#20
20220010798
2022-01-13

BACKPACK BLOWER

#21
20210355946
2021-11-18

Radial ventilator

#22
20210254629
2021-08-19

Fan housing, fan and operating system having a fan

#23
20210215173
2021-07-15

BLOWER DEVICE AND RESPIRATOR INCLUDING BLOWER DEVICE

#24
20210199125
2021-07-01

Centrifugal fan, air-sending device, air-conditioning apparatus, and refrigeration cycle apparatus

#25
20210196912
2021-07-01

Fan unit with improved surge characteristics

#26
20210190090
2021-06-24

Blower housing for blower of HVAC system

#27
20210115940
2021-04-22

Double-suction centrifugal pump

#28
20200340494
2020-10-29

Variable geometry of a housing for a blower assembly

#29
20200300261
2020-09-24

Blower

#30
20200300160
2020-09-24

Effect of the nozzle width to harness on engine pulse energy

#31
20200049167
2020-02-13

Blower device and respirator including blower device

#32
20200049165
2020-02-13

LOW-NOISE BLOWER

#33
20200025214
2020-01-23

Centrifugal compressor with inclined diffuser

#34
20200018325
2020-01-16

COLLECTOR FOR A COMPRESSOR

#35
20190360500
2019-11-28

Compressor housing for turbocharger and method for manufacturing the same

#36
20190338784
2019-11-07

Volute mechanism of a centrifugal fan

#37
20190226487
2019-07-25

Suction device for a range hood comprising a volute including a first semi-shell and a second semi-shell forming a compartment for housing a capacitor and a connector electrically coupled to an electric motor

#38
20190211842
2019-07-11

Fan and compressor housing for an air cycle machine

#39
20190170156
2019-06-06

Radial compressor

#40
20190162197
2019-05-30

Compressor with offset diffuser for integral bleed

#41
20190142236
2019-05-16

Autonomous surface cleaning robot for wet and dry cleaning

#42
20190118322
2019-04-25

SELF-DUST SUCTION MECHANISM SUITABLE FOR ELECTRIC POWER TOOLS

#43
20190104694
2019-04-11

Backpack blower

#44
20190104639
2019-04-04

COOLING MODULE WITH MULTIPLE PARALLEL BLOWERS

#45
20190085863
2019-03-21

Induced draft fan and gas furnace comprising the same

#46
20190017517
2019-01-17

Blower

#47
20180328380
2018-11-15

Volute casing for a centrifugal pump and centrifugal pump

#48
20180306205
2018-10-25

Turbo compressor supported only by its inlet and outlet flanges

#49
20180231010
2018-08-16

Volute centrifugal fan with permanent-magnet brush-less motor system

#50
20180156240
2018-06-07

Flow-conducting grille for arranging on a fan

#51
20180142693
2018-05-24

BLOWER ASSEMBLY FOR A VEHICLE

#52
20180112677
2018-04-26

Centrifugal blower

#53
20180051717
2018-02-22

Fan module and electronic device using the same

#54
20170350420
2017-12-07

Ported shroud geometry to reduce blade-pass noise

#55
20170321722
2017-11-09

Air cycle machine fan and compressor housing

#56
20170280960
2017-10-05

Autonomous surface cleaning robot for wet and dry cleaning

#57
20170227015
2017-08-10

Centrifugal pumps having anti-air-locking features

#58
20170224940
2017-08-10

Blower

#59
20170211465
2017-07-27

Compressor recirculation system having compressor inlet recirculation duct configured to reduce noise from Rossiter excitation and cavity acoustic resonance

#60
20170184116
2017-06-29

Impeller and pump using the impeller

#61
20170175754
2017-06-22

Apparatus for pressurizing a fluid within a turbomachine and method of operating the same

#62
20170159662
2017-06-08

Centrifugal fan

#63
20170114801
2017-04-27

Low-noise blower

#64
20170107993
2017-04-20

Air cycle machine compressor housing

#65
20170089356
2017-03-30

Centrifugal fan

#66
20160363126
2016-12-15

Centrifugal blower

#67
20160317766
2016-11-03

Fan unit with improved surge characteristics

#68
20160312801
2016-10-27

Blower device and respirator including blower device

#69
20160309616
2016-10-20

COOLING MODULE WITH MULTIPLE PARALLEL BLOWERS

#70
20160290358
2016-10-06

CENTRIFUGAL FAN

#71
20160290352
2016-10-06

IMPELLER AND BLOWER

#72
20160281733
2016-09-29

CENTRIFUGAL PUMP INTAKE PIPE WITH A HELICAL FLOW PATH

#73
20160273553
2016-09-22

Centrifugal compressor and water chilling unit having the same

#74
20160265386
2016-09-15

Turbocharger with low carbon steel shaft

#75
20160245304
2016-08-25

Compressor housing for supercharger

#76
20160238027
2016-08-18

Scroll for air conditioner and air conditioner having the same

#77
20160209893
2016-07-21

Centrifugal fan and an electronic device having the same

#78
20160208817
2016-07-21

Blower assembly for a vehicle

#79
20160208816
2016-07-21

Blower assembly for a vehicle

#80
20160195108
2016-07-07

Ventilation fan

#81
20160195107
2016-07-07

Diffuser for a forward-swept tangential flow compressor

#82
20160195106
2016-07-07

CENTRIFUGAL FAN, AND FAN EQUIPPED WITH SOUND-MUFFLING BOX AND USING CENTRIFUGAL FAN

#83
20160186779
2016-06-30

Compressor cover with integrated heat shield for an actuator

#84
20160186775
2016-06-30

CENTRIFUGAL BLOWER

#85
20160177973
2016-06-23

Fan including at least one cover element

#86
20160177972
2016-06-23

Extraction hood

#87
20160177970
2016-06-23

Blower

#88
20160177957
2016-06-23

Extraction hood

#89
20160160876
2016-06-09

Compressing apparatus housing and compressing apparatus

#90
20160138611
2016-05-19

Blower

#91
20160138608
2016-05-19

Centrifugal compressor and turbocharger

#92
20160138607
2016-05-19

CENTRIFUGAL PUMP CASING WITH OFFSET DISCHARGE

#93
20160131154
2016-05-12

Centrifugal compressor with inlet duct having swirl generators

#94
20160131148
2016-05-12

Centrifugal compressor and turbocharger

#95
20160123346
2016-05-05

Compressor structure for turbochargers

#96
20160084262
2016-03-24

Centrifugal blower

#97
20150275915
2015-10-01

Housing of a centrifugal blower

#98
20150204337
2015-07-23

Ventilation device provided with a volute-shaped casing

#99
20150016978
2015-01-15

Compressor Housing of Radial Compressor

#100
20140289992
2014-10-02

Autonomous surface cleaning robot for wet and dry cleaning

#101
20120199129
2012-08-09

Blower

#102
20120141262
2012-06-07

Air blower for an air conditioner

#103
20120114476
2012-05-10

VENTILATOR

#104
20120090600
2012-04-19

Inducer fan assembly for a furnace

#105
20120067347
2012-03-22

Fan unit with improved surge characteristics

#106
20120057971
2012-03-08

Centrifugal blower

#107
20120036659
2012-02-16

Autonomous surface cleaning robot for wet and dry cleaning

#108
20110308777
2011-12-22

Cooling Module with Multiple Parallel Blowers

#109
20110271469
2011-11-10

Autonomous surface cleaning robot for wet and dry cleaning

#110
20100158722
2010-06-24

Air supplier, particularly for an air supply system for fuel cells

#111
20100098535
2010-04-22

Centrifugal blower

#112
20100040461
2010-02-18

VOLUTE FOR CENTRIFUGAL PUMP

#113
20100014965
2010-01-21

Centrifugal type blower

#114
20090035132
2009-02-05

Housing for a centrifugal fan, pump, or turbine

#115
20080232958
2008-09-25

SPIRAL BLOWER

#116
20080187437
2008-08-07

Air blower having a raised column therein to reduce air flow pressure change and noise

#117
20080178879
2008-07-31

IMPELLER FOR A WEARABLE POSITIVE AIRWAY PRESSURE DEVICE

#118
20080175708
2008-07-24

Air supply system for a vehicle

#119
20080155768
2008-07-03

Autonomous surface cleaning robot for wet and dry cleaning

#120
20080140255
2008-06-12

AUTONOMOUS SURFACE CLEANING ROBOT FOR WET AND DRY CLEANING

#121
20080134458
2008-06-12

Autonomous surface cleaning robot for wet and dry cleaning

#122
20080069689
2008-03-20

Apparatus of Centrifugal Fan and a Dust-Collecting Module Using the Same

#123
20080044277
2008-02-21

Insert for fan-motor assembly

#124
20070274833
2007-11-29

Centrifugal blower

#125
20070092373
2007-04-26

Centrifugal fan and fan frame thereof

#126
20070016328
2007-01-18

Autonomous surface cleaning robot for wet and dry cleaning

#127
20070009354
2007-01-11

Centrifugal fan

#128
20070003414
2007-01-04

Housing for a centrifugal fan, pump, or turbine

#129
20060239815
2006-10-26

Centrifugal blower

#130
20060081226
2006-04-20

Electrical charge air compressor provided with an integrated air cooling system

#131
20060078427
2006-04-13

Heat-dissipating fan

#132
20060051205
2006-03-09

Draft inducer blower

#133
20050260073
2005-11-24

Heat-dissipating device

#134
20050260069
2005-11-24

Heat-dissipating device

#135
20050207886
2005-09-22

Centrifugal fan and fan frame thereof