ClassID:

144379

F04D29/681 - 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 elastic fluid pumps

Sub-classes:
Recent Application in this class:
#1
20260139689
2026-05-21

FAN CASING OR LINER WITH INTERCHANGEABLE TIP TREATMENT SEGMENTS

#2
20250389191
2025-12-25

EFFICIENT GAS TURBINE ENGINE INSTALLATION AND OPERATION

#3
20250243772
2025-07-31

LIFE AND PERFORMANCE IMPROVEMENT TRENCHES

#4
20240383545
2024-11-21

Airfoils and Machines Incorporating Airfoils

#5
20230332622
2023-10-19

Compressor flowpath

#6
20230303191
2023-09-28

Airfoils and machines incorporating airfoils

#7
20230175527
2023-06-08

TURBOMACHINE COMPRESSOR HAVING A STATIONARY WALL PROVIDED WITH A SHAPE TREATMENT

#8
20230175522
2023-06-08

Stabilizer of a compressor

#9
20230131276
2023-04-27

Compressor flowpath

#10
20220403743
2022-12-22

Efficient gas turbine engine installation and operation

#11
20220348270
2022-11-03

Airfoils and machines incorporating airfoils

#12
20210388858
2021-12-16

Method, system and apparatus for reducing fluid drag

#13
20210372434
2021-12-02

GAS TURBINE ENGINE WITH PARTIAL INLET VANE

#14
20210207483
2021-07-08

Efficient gas turbine engine installation and operation

#15
20210095684
2021-04-01

Free-tipped axial fan assembly

#16
20210033108
2021-02-04

Compressor rotor casing with swept grooves

#17
20200398908
2020-12-24

Airfoils and machines incorporating airfoils

#18
20200291785
2020-09-17

Efficient gas turbine engine installation and operation

#19
20200240436
2020-07-30

Compressor flowpath

#20
20200109719
2020-04-09

Centrifugal compressor

#21
20200056623
2020-02-20

Non-axisymmetric impeller hub flowpath

#22
20200040906
2020-02-06

Propeller fan and outdoor unit for air-conditioning apparatus

#23
20200024984
2020-01-23

Endwall Controuring

#24
20190316600
2019-10-17

Diffuser pipe with non-axisymmetric end wall

#25
20190293074
2019-09-26

Laminar flow radial ceiling fan

#26
20190271326
2019-09-05

Impeller wheel and centrifugal compressor having impeller wheel

#27
20190226488
2019-07-25

Compressor bleed port structure

#28
20190202503
2019-07-04

Airfoils and machines incorporating airfoils

#29
20190170003
2019-06-06

Modulation of vane end serrations

#30
20190168862
2019-06-06

Part and method for producing a part having reduced drag by non-constant riblets

#31
20190154058
2019-05-23

BLOWER WITH INDENTATIONS

#32
20190145427
2019-05-16

Fan shroud

#33
20190128270
2019-05-02

Closed impeller with self-recirculation casing treatment

#34
20190128122
2019-05-02

Asymmetrical shroud for a compressor of a turbine engine

#35
20190128121
2019-05-02

Shroud having elevations, for a turbomachine compressor

#36
20190128118
2019-05-02

Compressor for turbine engine

#37
20190107119
2019-04-11

Gas turbine engine with partial inlet vane

#38
20190084692
2019-03-21

Wing comprising a leading edge having means for preventing the clogging of holes produced in the leading edge

#39
20190078587
2019-03-14

Systems and method for a variable inlet device of a compressor

#40
20190078586
2019-03-14

Systems and method for a variable inlet device of a compressor

#41
20190055956
2019-02-21

Centrifugal turbo machinery

#42
20190048880
2019-02-14

Compressor rotor blade, compressor, and method for profiling the compressor rotor blade

#43
20180363677
2018-12-20

Inlet pre-swirl gas turbine engine

#44
20180363554
2018-12-20

High tip speed gas turbine engine

#45
20180355884
2018-12-13

Fan and air-conditioning apparatus equipped with fan

#46
20180355882
2018-12-13

Turbofan

#47
20180335048
2018-11-22

Blower arrangement with flow dividing nozzle

#48
20180291920
2018-10-11

Centrifugal compressor impeller and compressor comprising said impeller

#49
20180283403
2018-10-04

Fan blade surface features

#50
20180258947
2018-09-13

AXIAL FAN

#51
20180252230
2018-09-06

Dimensioning of the skeleton angle of the trailing edge of the arms crossing the by-pass flow of a turbofan

#52
20180238343
2018-08-23

Propeller fan, propeller fan device, and air conditioner outdoor unit

#53
20180202463
2018-07-19

Axial fan and fan assembly

#54
20180202462
2018-07-19

Axial fan and fan assembly

#55
20180195525
2018-07-12

Serial axial flow fan

#56
20180156239
2018-06-07

Turbine engine part with non-axisymmetric surface

#57
20180149168
2018-05-31

Heat dissipation fan

#58
20180142702
2018-05-24

Inlet nozzle for a radial, diagonal or axial-flow fan, and a radial, diagonal or axial-flow fan comprising an inlet nozzle

#59
20180094637
2018-04-05

Free-tipped axial fan assembly

#60
20180087784
2018-03-29

Axial fan and outdoor unit including the same

#61
20180066521
2018-03-08

Axial fan with grooved trailing edge and outdoor unit

#62
20180038384
2018-02-08

Propeller fan, fluid feeder, and molding die

#63
20180038235
2018-02-08

Turbine engine air guide assembly with improved aerodynamic performance

#64
20180031003
2018-02-01

Impeller and motor

#65
20180030996
2018-02-01

Fan blade surface features

#66
20180030843
2018-02-01

Guide assembly with optimised aerodynamic performance

#67
20170335856
2017-11-23

Composite component with hollow reinforcing pins

#68
20170326989
2017-11-16

FLUID MACHINE WITH PLASMA ACTUATOR

#69
20170314576
2017-11-02

METHOD FOR CREATING AN IMPELLER OF A RADIAL TURBO FLUID ENERGY MACHINE, AND STAGE

#70
20170298953
2017-10-19

Adjustable-trim centrifugal compressor for a turbocharger

#71
20170292536
2017-10-12

RETURN STAGE OF A MULTI-STAGE TURBOCOMPRESSOR OR TURBOEXPANDER HAVING ROUGH WALL SURFACES

#72
20170284401
2017-10-05

Diffuser for a radial compressor

#73
20170254561
2017-09-07

Aerodynamic sound decreasing apparatus

#74
20170241278
2017-08-24

Aerofoil

#75
20170234134
2017-08-17

Riblets for a flowpath surface of a turbomachine

#76
20170218979
2017-08-03

Fluid machine

#77
20170198713
2017-07-13

Centrifugal compressor and turbocharger

#78
20170175765
2017-06-22

Elongated air jet device and method

#79
20170145828
2017-05-25

Turbine blade with airfoil tip vortex control

#80
20170130723
2017-05-11

Centrifugal blower

#81
20170122329
2017-05-04

Air conditioner

#82
20170101993
2017-04-13

Turbofan for air conditioning apparatus

#83
20170067479
2017-03-09

Airfoil shape for a compressor

#84
20170030375
2017-02-02

Axial flow compressor, gas turbine including the same, and stator blade of axial flow compressor

#85
20170009781
2017-01-12

Turbomachine component or collection of components and associated turbomachine

#86
20160348694
2016-12-01

Gas turbine stator with winglets

#87
20160312649
2016-10-27

High performance robust gas turbine exhaust with variable (adaptive) exhaust diffuser geometry

#88
20160298646
2016-10-13

Gas turbine diffuser strut including a trailing edge flap and methods of assembling the same

#89
20160245301
2016-08-25

Air-blowing device

#90
20160245299
2016-08-25

Turbomachine part with a non-axisymmetric surface

#91
20160230562
2016-08-11

Fan root endwall contouring

#92
20160215793
2016-07-28

Centrifugal fan

#93
20160186772
2016-06-30

Axial compressor rotor incorporating non-axisymmetric hub flowpath and splittered blades

#94
20160177968
2016-06-23

Blade

#95
20160169017
2016-06-16

Circumferentially varying axial compressor endwall treatment for controlling leakage flow therein

#96
20160138608
2016-05-19

Centrifugal compressor and turbocharger

#97
20160138601
2016-05-19

Axial fan for industrial use

#98
20160115972
2016-04-28

Row of aerofoil members

#99
20160084265
2016-03-24

Gas turbine engine with partial inlet vane

#100
20160076554
2016-03-17

Backing plate

#101
20160076553
2016-03-17

Centrifugal compressor and turbocharger

#102
20160076551
2016-03-17

Impeller and fluid machine

#103
20160052621
2016-02-25

ENERGY EFFICIENCY IMPROVEMENTS FOR TURBOMACHINERY

#104
20160040684
2016-02-11

Axial fan having balance correction portions and a cone located axial of one of the balance correction portions

#105
20160032944
2016-02-04

Centrifugal blower and method of assembling the same

#106
20160025101
2016-01-28

Propeller fan, blower device, and outdoor equipment

#107
20160003095
2016-01-07

Undulating stator for reducing the noise produced by interaction with a rotor

#108
20160003050
2016-01-07

Variable span splitter blade

#109
20150354359
2015-12-10

Turbocharger impeller, method of manufacturing the same, turbocharger, and turbocharger unit

#110
20150330394
2015-11-19

Centrifugal blower housing having surface structures, system, and method of assembly

#111
20150330225
2015-11-19

Rotor and gas turbine engine including a rotor

#112
20150292508
2015-10-15

Air conditioner

#113
20150292331
2015-10-15

Balancing pockets

#114
20150267727
2015-09-24

Surface plasma actuator

#115
20150240834
2015-08-27

Compressor cover with circumferential groove

#116
20150226232
2015-08-13

Centrifugal compressor diffuser and method for controlling same

#117
20150211546
2015-07-30

Multistage axial flow compressor

#118
20150192135
2015-07-09

Multi-blade centrifugal fan and air conditioner employing the same

#119
20150176418
2015-06-25

Compressor variable vane assembly

#120
20150118061
2015-04-30

Radial compressor

#121
20150110651
2015-04-23

Voltage application device, rotation apparatus and voltage application method

#122
20150086344
2015-03-26

Assembly for a fluid flow machine

#123
20150078885
2015-03-19

Fan

#124
20150071786
2015-03-12

Propeller fan, fluid feeder, and molding die

#125
20150064011
2015-03-05

Fan and impeller thereof

#126
20150030474
2015-01-29

Axial flow fan

#127
20150030439
2015-01-29

Vortex generators placed in the interblade channel of a compressor rectifier

#128
20140377053
2014-12-25

Centrifugal compressor

#129
20140363277
2014-12-11

Assembly for a fluid flow machine

#130
20140356144
2014-12-04

Assembly for a fluid flow machine

#131
20140356143
2014-12-04

Assembly for a fluid flow machine

#132
20140328675
2014-11-06

Axial turbomachine stator with ailerons at the blade roots

#133
20140322001
2014-10-30

Turbomachinery stationary vane arrangement for disk and blade excitation reduction and phase cancellation

#134
20140314557
2014-10-23

Centrifugal fluid machine

#135
20140308110
2014-10-16

Adjustable compressor trim

#136
20140301860
2014-10-09

Airfoil having a profiled trailing edge for a fluid flow machine, blade, and integrally blade rotor

#137
20140301825
2014-10-09

Cross flow fan

#138
20140286786
2014-09-25

Axial or diagonal fan with trip edge on the rotor blade

#139
20140286768
2014-09-25

Turbomachine element

#140
20140271172
2014-09-18

Free-tipped axial fan assembly with a thicker blade tip

#141
20140260289
2014-09-18

Multi-passage diffuser with reactivated boundary layer

#142
20140248154
2014-09-04

Blade of a row of rotor blades or stator blades for use in a turbomachine

#143
20140161606
2014-06-12

Vane profile for axial-flow compressor

#144
20140119924
2014-05-01

Laminar flow radial ceiling fan

#145
20140090401
2014-04-03

Endwall contouring

#146
20140090380
2014-04-03

Endwall contouring

#147
20140044553
2014-02-13

Blade for a continuous-flow machine and a continuous-flow machine

#148
20140023501
2014-01-23

Turbofan, and air-conditioning apparatus

#149
20140010638
2014-01-09

Turbomachine with variable-pitch vortex generator

#150
20140003933
2014-01-02

Axial flow fan

#151
20130330184
2013-12-12

AERODYNAMIC ELEMENT OF TURBINE ENGINE

#152
20130294903
2013-11-07

Scroll shape of centrifugal compressor

#153
20130272909
2013-10-17

Diaphragm with passive flow rate control for compression stage

#154
20130272865
2013-10-17

Scroll structure of centrifugal compressor

#155
20130266436
2013-10-10

Housing structure of exhaust gas turbocharger

#156
20130265848
2013-10-10

Duct having flow conducting surfaces

#157
20130192198
2013-08-01

COMPRESSOR FLOWPATH

#158
20130189094
2013-07-25

Multistage compressor with improved map width performance

#159
20130156583
2013-06-20

Airfoils including tip profile for noise reduction and method for fabricating same

#160
20130156559
2013-06-20

Compressor and a turbine engine with optimized efficiency

#161
20130142615
2013-06-06

Blower housing

#162
20130064673
2013-03-14

Vortex generators for generating vortices upstream of a cascade of compressor blades

#163
20130037657
2013-02-14

VORTEX GENERATORS

#164
20130036760
2013-02-14

Centrifugal compressor with fluid injector diffuser

#165
20130022452
2013-01-24

Engine compressor, particularly aircraft jet engine compressor, fitted with an air bleed system

#166
20130000308
2013-01-03

Diffuser pipe and assembly for gas turbine engine

#167
20120328447
2012-12-27

Blade of a turbomachine

#168
20120328444
2012-12-27

Impeller of centrifugal compressor

#169
20120287550
2012-11-15

Voltage application device, rotation apparatus and voltage application method

#170
20120275916
2012-11-01

Diffuser with enhanced surge margin

#171
20120263587
2012-10-18

Turbomachine with axial compression or expansion

#172
20120251312
2012-10-04

Stator of an axial compressor stage of a turbomachine

#173
20120243985
2012-09-27

AXIAL BLOWER

#174
20120211205
2012-08-23

Multi-blade centrifugal fan and air conditioner employing the same

#175
20120205070
2012-08-16

AERODYNAMIC SOUND DECREASING APPARATUS

#176
20120201671
2012-08-09

Turbomachine comprising an annular casing and a bladed rotor

#177
20120177500
2012-07-12

Angled airfoil extension for fan blade

#178
20120128480
2012-05-24

Blade

#179
20120121400
2012-05-17

Compressor of exhaust gas turbocharger

#180
20120100001
2012-04-26

FAN STRUCTURE

#181
20120057959
2012-03-08

Fan

#182
20120031591
2012-02-09

Vehicle heat-exchange module

#183
20120011827
2012-01-19

Bleed air outlet in the bypass duct of a turbofan engine

#184
20120003085
2012-01-05

Compressor casing with optimized cavities

#185
20110318189
2011-12-29

Crossflow fan and air conditioner provided with same

#186
20110268557
2011-11-03

SYSTEM AND METHOD FOR ATTENUATING THE NOISE OF AIRFOILS

#187
20110255957
2011-10-20

Fan with reduced noise

#188
20110255953
2011-10-20

Turbo machine and method to reduce vibration in turbo machines

#189
20110255952
2011-10-20

Compressor gas flow deflector and compressor incorporating the same

#190
20110223015
2011-09-15

Fan

#191
20110217162
2011-09-08

Turbo charger housing

#192
20110211963
2011-09-01

Radial or diagonal fan wheel

#193
20110211949
2011-09-01

Free-tipped axial fan assembly

#194
20110206527
2011-08-25

Compressor aerofoil

#195
20110182737
2011-07-28

Heat dissipation fan and rotor thereof

#196
20110150665
2011-06-23

FAN ASSEMBLY

#197
20110142614
2011-06-16

Counter-rotating axial flow fan

#198
20110135462
2011-06-09

Cooling fan

#199
20110123322
2011-05-26

Flow passage for gas turbine engine

#200
20110097203
2011-04-28

Turbo machinery

#201
20110091323
2011-04-21

COMPRESSOR HOUSING FOR TURBOCHARGER

#202
20110076133
2011-03-31

Turbomachine compressor with an air injection system

#203
20110058935
2011-03-10

FAN

#204
20110014037
2011-01-20

Axial-flow compressor with a flow pulse generator

#205
20100310357
2010-12-09

RING WING-TYPE ACTINIC FLUID DRIVE

#206
20100303634
2010-12-02

Fluid dynamic body having escapelet openings for reducing induced and interference drag, and energizing stagnant flow

#207
20100278643
2010-11-04

Centrifugal compressor vane diffuser wall contouring

#208
20100266385
2010-10-21

Separation resistant aerodynamic article

#209
20100247351
2010-09-30

Axial flow fan, in particular for a motor vehicle

#210
20100239410
2010-09-23

Multistage compressor with improved map width performance

#211
20100232971
2010-09-16

Air fan module and a flow directing blade assembly thereof

#212
20100232954
2010-09-16

Bypass duct of a turbofan engine

#213
20100226751
2010-09-09

Fan assembly

#214
20100202887
2010-08-12

Radial or diagonal fan wheel

#215
20100196143
2010-08-05

Axial compressor

#216
20100183445
2010-07-22

Blade structure for heat sink fans

#217
20100150731
2010-06-17

FAN BLADES

#218
20100150699
2010-06-17

Fan

#219
20100143140
2010-06-10

Fluid flow machine with sidewall boundary layer barrier

#220
20100129203
2010-05-27

Control of shockwave-boundarylayer-interaction using MEMS plasma devices

#221
20100111676
2010-05-06

Compressor for an exhaust gas turbocharger

#222
20100098527
2010-04-22

Fluid flow machine with peripheral energization near the suction side

#223
20100077768
2010-04-01

Diffuser with enhanced surge margin

#224
20090324384
2009-12-31

Gas turbine having a peripheral ring segment including a recirculation channel

#225
20090297360
2009-12-03

Breeze Enhancing Fan Blade Attachment

#226
20090263233
2009-10-22

Fluid flow machine with blade row-internal fluid return arrangement

#227
20090232636
2009-09-17

Multistage compressor for a gas turbine, comprising discharge ports and injection ports to stabilize the compressor flow

#228
20090220348
2009-09-03

Twin-airfoil blade with spacer strips

#229
20090208324
2009-08-20

Casing structure for stabilizing flow in a fluid-flow machine

#230
20090169367
2009-07-02

Instability mitigation system using stator plasma actuators

#231
20090162210
2009-06-25

Impeller and cooling fan incorporating the same

#232
20090162203
2009-06-25

FAN MODULE

#233
20090151911
2009-06-18

Fan module

#234
20090145584
2009-06-11

Cooling device

#235
20090136354
2009-05-28

Blade

#236
20090135560
2009-05-28

HIGH EFFICIENCY FLUID MOVERS

#237
20090129921
2009-05-21

Cooling fan having protrusion at air outlet thereof

#238
20090060730
2009-03-05

CENTRIFUGAL FAN AND IMPELLER THEREOF

#239
20090060711
2009-03-05

Fan

#240
20090060710
2009-03-05

Fan

#241
20090047117
2009-02-19

Flow control arrangement

#242
20090044543
2009-02-19

Jet engine with compressor air circulation and method for operating the jet engine

#243
20090003989
2009-01-01

Blade with tangential jet generation on the profile

#244
20080295518
2008-12-04

Airfoil acoustic impedance control

#245
20080247870
2008-10-09

Compressor and compressor housing

#246
20080240913
2008-10-02

FAN FRAME WITH DIVERSION STRUCTURE

#247
20080232960
2008-09-25

Fluid return in the splitter of turbomachines with bypass-flow configuration

#248
20080229776
2008-09-25

Centrifugal blower and air conditioner having the same

#249
20080225480
2008-09-18

Axial fan apparatus, axial-flow impeller, and electronic apparatus

#250
20080219852
2008-09-11

Fluid-flow machine and rotor blade thereof

#251
20080213098
2008-09-04

Free-standing turbine blade

#252
20080213097
2008-09-04

Angled airfoil extension for fan blade

#253
20080199306
2008-08-21

Turbomachine casing with treatment, a compressor, and a turbomachine including such a casing

#254
20080181780
2008-07-31

Airfoil for axial-flow compressor capable of lowering loss in low Reynolds number region

#255
20080145210
2008-06-19

Airfoil leading edge end wall vortex reducing plasma

#256
20080118341
2008-05-22

Wide flow compressor with diffuser bypass

#257
20080107538
2008-05-08

Swept turbomachine blade

#258
20080095614
2008-04-24

Fan platform fin

#259
20070274823
2007-11-29

Method for reducing the noise of turbo engines

#260
20070251680
2007-11-01

Centrifugal Blower and Air Conditioner with Centrifugal Blower

#261
20070248459
2007-10-25

Centrifugal fan

#262
20070224032
2007-09-27

Compressor apparatus with recirculation and method therefore

#263
20070217916
2007-09-20

Gas turbine vane

#264
20070201982
2007-08-30

VENTILATOR AND VENTILATOR BLADE

#265
20070177349
2007-08-02

High efficiency fluid mover

#266
20070166165
2007-07-19

Cooling fan for vehicle radiator

#267
20070140842
2007-06-21

HIGH EFFICIENCY FLUID MOVERS

#268
20070134086
2007-06-14

Impeller for compressor

#269
20070122280
2007-05-31

METHOD AND APPARATUS FOR REDUCING AXIAL COMPRESSOR BLADE TIP FLOW

#270
20070116561
2007-05-24

High efficiency fluid movers

#271
20070113403
2007-05-24

Method for increasing a blade performance (variants)

#272
20070059177
2007-03-15

Axial compressor blading

#273
20070053775
2007-03-08

Fan frame

#274
20070044470
2007-03-01

Internal combustion engine including a compressor and method for operating an internal combustion engine

#275
20070031257
2007-02-08

Propeller fan for heat exchanger of in-vehicle air conditioner

#276
20060263223
2006-11-23

Fan blade with ridges

#277
20060177304
2006-08-10

Centrifugal fan and apparatus using the same

#278
20060165520
2006-07-27

Blade of a turbomachine with enlarged peripheral profile depth

#279
20060140767
2006-06-29

Free-form welded power system component

#280
20060115358
2006-06-01

Centrifugal compressor

#281
20060110257
2006-05-25

Ceiling fan blade

#282
20060102800
2006-05-18

Method and apparatus for modulating flow separation

#283
20060067821
2006-03-30

Methods and apparatus for aerodynamically self-enhancing rotor blades

#284
20060032988
2006-02-16

Boundary layer control arrangement

#285
20060024160
2006-02-02

Centrifugal blower having auxiliary radial inlet

#286
20050271513
2005-12-08

Compressor blade with reduced aerodynamic blade excitation

#287
20050271500
2005-12-08

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