ClassID:

144382

F04D29/685 - 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 Inducing localised fluid recirculation in the stator-rotor interface

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

FAN CASING OR LINER WITH INTERCHANGEABLE TIP TREATMENT SEGMENTS

#2
20250243772
2025-07-31

LIFE AND PERFORMANCE IMPROVEMENT TRENCHES

#3
20250180033
2025-06-05

AXIAL TURBOMACHINE COMPRESSOR WITH CONTROLLED RECIRCULATION BETWEEN THE INNER SHROUD AND THE ROTOR

#4
20250092883
2025-03-20

Centrifugal compressor

#5
20240418185
2024-12-19

CENTRIFUGAL COMPRESSOR

#6
20240271618
2024-08-15

Energy transfer machine for corrosive fluids

#7
20240200468
2024-06-20

Turbine engine assembly comprising a casing and an aerodynamic treatment member at the blade tips, and corresponding turbine engine

#8
20240052849
2024-02-15

Air intake bypass recirculation structure with adjustable air entraining amount and controllable broadband noise

#9
20230304507
2023-09-28

Compressor housing and centrifugal compressor

#10
20230272794
2023-08-31

Energy transfer machine for corrosive fluids

#11
20230193785
2023-06-22

Turbine engine fan track liner with tip injection air recirculation passage

#12
20230071034
2023-03-09

Stabilizer channel of a compressor

#13
20230025097
2023-01-26

Centrifugal compressor with recirculation passage

#14
20230016778
2023-01-19

Compressor with casing treatment

#15
20230009371
2023-01-12

SEPARATING DEVICE AND TURBOMACHINE COMPRISING SEPARATING DEVICE

#16
20220154721
2022-05-19

Centrifugal compressor with recirculation structure

#17
20220099107
2022-03-31

Centrifugal compressor

#18
20220099101
2022-03-31

Centrifugal compressor

#19
20220010802
2022-01-13

Centrifugal compressor with recirculation passage

#20
20210372435
2021-12-02

Compressor device with turbine section water recirculation path

#21
20210317840
2021-10-14

Axial compressor

#22
20210246908
2021-08-12

Compressor housing, compressor including the compressor housing, and turbocharger including the compressor

#23
20210095684
2021-04-01

Free-tipped axial fan assembly

#24
20200340486
2020-10-29

Gas turbine engine compressors having optimized stall enhancement feature configurations and methods for the production thereof

#25
20200318492
2020-10-08

Tandem stators with flow recirculation conduit

#26
20200308970
2020-10-01

Compressor section of gas turbine engine including shroud with serrated casing treatment

#27
20200291958
2020-09-17

Compressor for charging a combustion engine

#28
20200271045
2020-08-27

Centrifugal compressor and turbocharger

#29
20200182259
2020-06-11

Grooved shroud casing treatment for high pressure compressor in a turbine engine

#30
20200149535
2020-05-14

Inline axial flow fan

#31
20200063749
2020-02-27

Centrifugal compressor and turbocharger including the same

#32
20200032817
2020-01-30

Centrifugal compressor

#33
20200011346
2020-01-09

Structural assembly for a compressor of a fluid flow machine

#34
20190277152
2019-09-12

Gas turbine compressor

#35
20190249681
2019-08-15

Centrifugal compressor with recirculation passage

#36
20190242402
2019-08-08

Radial compressor

#37
20190226501
2019-07-25

TURBOCHARGER

#38
20190226350
2019-07-25

Turbomachines that include a casing treatment

#39
20190186502
2019-06-20

Water-cooled casing treatment

#40
20190170156
2019-06-06

Radial compressor

#41
20190170149
2019-06-06

Active casing treatment adapted with movable sleeve

#42
20190170148
2019-06-06

Active casing treatment adapted with movable sleeve

#43
20190128270
2019-05-02

Closed impeller with self-recirculation casing treatment

#44
20190107113
2019-04-11

Cooling system for compressor and method for operation thereof

#45
20190107111
2019-04-11

Centrifugal compressor with recirculation structure

#46
20190072029
2019-03-07

COMPRESSOR ARRANGEMENT SUPPLYING CHARGED AIR TO A COMBUSTION ENGINE

#47
20190048876
2019-02-14

Centrifugal compressor for a turbocharger, having synergistic ported shroud and inlet-adjustment mechanism

#48
20190024576
2019-01-24

Transient compensation for variable geometry compressor

#49
20190024574
2019-01-24

Method and system for active casing treatment control

#50
20180340544
2018-11-29

Slidable sleeve actuation system for a turbocharger compressor

#51
20180306205
2018-10-25

Turbo compressor supported only by its inlet and outlet flanges

#52
20180306048
2018-10-25

Sealing ring element for a turbine comprising an inclined cavity in an abradable material

#53
20180258950
2018-09-13

Flow control structures for turbomachines and methods of designing the same

#54
20180245602
2018-08-30

Engine cooling fan casing shroud with unobstructed outlet

#55
20180231023
2018-08-16

Grooved shroud casing treatment for high pressure compressor in a turbine engine

#56
20180187690
2018-07-05

Gas turbine engine compressors having optimized stall enhancement feature configurations and methods for the production thereof

#57
20180172021
2018-06-21

Radial compressor and turbocharger

#58
20180094637
2018-04-05

Free-tipped axial fan assembly

#59
20180045214
2018-02-15

Compressor wheel, method of making the same, and turbocharger including the same

#60
20180023399
2018-01-25

Forming cooling passages in thermal barrier coated, combustion turbine superalloy components

#61
20170370241
2017-12-28

Turbine shroud with abradable layer having dimpled forward zone

#62
20170328377
2017-11-16

Compressor end-wall treatment having a bent profile

#63
20170218979
2017-08-03

Fluid machine

#64
20170211465
2017-07-27

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

#65
20170204876
2017-07-20

Gas turbine engine blade casing

#66
20170198713
2017-07-13

Centrifugal compressor and turbocharger

#67
20170191502
2017-07-06

Compressor cover, centrifugal compressor, and turbocharger, and compressor cover manufacturing method

#68
20170191496
2017-07-06

Compressor for an exhaust gas turbocharger

#69
20170159667
2017-06-08

Venturi effect endwall treatment

#70
20170097010
2017-04-06

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

#71
20170058687
2017-03-02

Vortex-injector casing for an axial turbomachine compressor

#72
20170051761
2017-02-23

Recirculation noise obstruction for a turbocharger

#73
20170016457
2017-01-19

Flow control structures for turbomachines and methods of designing the same

#74
20160305453
2016-10-20

Reduced noise compressor recirculation

#75
20160305285
2016-10-20

Gas turbine engine rotor casing treatment

#76
20160230776
2016-08-11

Optimized circumferential groove casing treatment for axial compressors

#77
20160222973
2016-08-04

Gas turbine engine compressors having optimized stall enhancement feature configurations and methods for the production thereof

#78
20160222789
2016-08-04

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

#79
20160208674
2016-07-21

Fan shroud for motor vehicle

#80
20160208643
2016-07-21

Turbomachine flow path having circumferentially varying outer periphery

#81
20160201693
2016-07-14

Centrifugal compressor

#82
20160195109
2016-07-07

Attachment arrangement for turbo compressor

#83
20160169017
2016-06-16

Circumferentially varying axial compressor endwall treatment for controlling leakage flow therein

#84
20160160756
2016-06-09

Turbocharger combining axial flow turbine with a compressor stage utilizing active casing treatment

#85
20160153360
2016-06-02

Compressor end-wall treatment with multiple flow axes

#86
20160131160
2016-05-12

Fan

#87
20160131145
2016-05-12

Adjustable-trim centrifugal compressor with ported shroud, and turbocharger having same

#88
20160090901
2016-03-31

Compressor inlet recirculation system for a turbocharger

#89
20160059365
2016-03-03

Rotors with stall margin and efficiency optimization and methods for improving gas turbine engine performance therewith

#90
20160040546
2016-02-11

Compressor casing

#91
20160017791
2016-01-21

Centrifugal compressor

#92
20160010652
2016-01-14

Apparatus for preventing axial-flow compressor from stalling by employing casing treatment

#93
20160010475
2016-01-14

Serrated outer surface for vortex initiation within the compressor stage of a gas turbine

#94
20150369073
2015-12-24

Flow control structures for turbomachines and methods of designing the same

#95
20150354598
2015-12-10

Shrouded axial fan with casing treatment

#96
20150337863
2015-11-26

Centrifugal compressor

#97
20150292355
2015-10-15

Turbomachine cooling systems

#98
20150240834
2015-08-27

Compressor cover with circumferential groove

#99
20150211545
2015-07-30

Shroud treatment for a centrifugal compressor

#100
20150192147
2015-07-09

Centrifugal compressor

#101
20150118080
2015-04-30

Turbine hub with surface discontinuity and turbocharger incorporating the same

#102
20150118079
2015-04-30

Turbocharger shroud with cross-wise grooves and turbocharger incorporating the same

#103
20150104298
2015-04-16

Tip treatment bars in a gas turbine engine

#104
20150086348
2015-03-26

Single suction type centrifugal fan

#105
20150086344
2015-03-26

Assembly for a fluid flow machine

#106
20150078890
2015-03-19

Compressor casing comprising cavities with optimised setting

#107
20150078889
2015-03-19

Compressor casing comprising cavities having an optimised upstream shape

#108
20150056062
2015-02-26

Centrifugal compressor

#109
20150037142
2015-02-05

Casing for turbomachine blisk and turbomachine equipped with said casing

#110
20150037141
2015-02-05

Compressor housing assembly for a turbocharger

#111
20150003976
2015-01-01

Turbomachine, circulation structure and method

#112
20140377053
2014-12-25

Centrifugal compressor

#113
20140377051
2014-12-25

Turbocharger systems and method to prevent compressor choke

#114
20140363277
2014-12-11

Assembly for a fluid flow machine

#115
20140356144
2014-12-04

Assembly for a fluid flow machine

#116
20140356143
2014-12-04

Assembly for a fluid flow machine

#117
20140341727
2014-11-20

Centrifugal compressor with casing treatment for surge control

#118
20140093354
2014-04-03

Compressor of an exhaust-gas turbocharger

#119
20140056696
2014-02-27

Pump device and pump system

#120
20130315737
2013-11-28

Stall margin enhancement of axial fan with rotating shroud

#121
20130302155
2013-11-14

Centrifugal compressor and manufacturing method thereof

#122
20130266436
2013-10-10

Housing structure of exhaust gas turbocharger

#123
20130121804
2013-05-16

Fluid movement system and method for determining impeller blade angles for use therewith

#124
20130071241
2013-03-21

Compressor of an exhaust-gas turbocharger

#125
20130058762
2013-03-07

Turbo compressor having a flow diversion channel

#126
20130022461
2013-01-24

Minimal-acoustic-impact inlet cooling flow

#127
20120328424
2012-12-27

Intake conduit element and compressor arrangement therefrom

#128
20120321443
2012-12-20

TIP TREATMENT FOR A ROTOR CASING

#129
20120321440
2012-12-20

Centrifugal compressor having an asymmetric self-recirculating casing treatment

#130
20120315131
2012-12-13

Axial turbocompressor

#131
20120315127
2012-12-13

Centrifugal compressor having an asymmetric self-recirculating casing treatment

#132
20120308372
2012-12-06

Centrifugal compressor having an asymmetric self-recirculating casing treatment

#133
20120308371
2012-12-06

Centrifugal compressor having an asymmetric self-recirculating casing treatment

#134
20120269619
2012-10-25

Fluid-flow machine

#135
20120260652
2012-10-18

COMPRESSOR COMPRISING AN INSERT IN THE INLET REGION

#136
20120243985
2012-09-27

AXIAL BLOWER

#137
20120213627
2012-08-23

Compressor comprising a sensor arrangement

#138
20120201671
2012-08-09

Turbomachine comprising an annular casing and a bladed rotor

#139
20120171059
2012-07-05

Turbocharger with integrated actuator

#140
20120163967
2012-06-28

Compressor casing treatment for gas turbine engine

#141
20120148391
2012-06-14

CENTRIFUGAL COMPRESSOR

#142
20120121400
2012-05-17

Compressor of exhaust gas turbocharger

#143
20120039702
2012-02-16

Compressor

#144
20120003085
2012-01-05

Compressor casing with optimized cavities

#145
20110311354
2011-12-22

Compressors with casing treatments in gas turbine engines

#146
20110305565
2011-12-15

AXIAL FAN APPARATUS, HOUSING, AND ELECTRONIC APPARATUS

#147
20110299979
2011-12-08

Method for improving the stall margin of an axial flow compressor using a casing treatment

#148
20110255952
2011-10-20

Compressor gas flow deflector and compressor incorporating the same

#149
20110214421
2011-09-08

Compressor of an exhaust-gas turbocharger

#150
20110173975
2011-07-21

Turbocharger

#151
20110091323
2011-04-21

COMPRESSOR HOUSING FOR TURBOCHARGER

#152
20110088392
2011-04-21

Radial compressor, particularly for an exhaust gas turbocharger of an internal combustion engine

#153
20110085902
2011-04-14

Low-noise ported-shroud compressor for a turbocharger

#154
20110085896
2011-04-14

Casing for a moving-blade wheel of turbomachine

#155
20110011379
2011-01-20

Compressor

#156
20110002770
2011-01-06

Compressor

#157
20100329852
2010-12-30

Circulation structure for a turbo compressor

#158
20100310353
2010-12-09

Rotor casing treatment with recessed baffles

#159
20100239410
2010-09-23

Multistage compressor with improved map width performance

#160
20100232943
2010-09-16

Buried casing treatment strip for a gas turbine engine

#161
20100172741
2010-07-08

Compressor device

#162
20100150698
2010-06-17

Engine intake air compressor and method

#163
20100143111
2010-06-10

COMPRESSOR STABILIZER

#164
20100143095
2010-06-10

Radial compressor

#165
20100111688
2010-05-06

Axial-centrifugal compressor with ported shroud

#166
20100111676
2010-05-06

Compressor for an exhaust gas turbocharger

#167
20100098536
2010-04-22

Fluid flow machine with running gap retraction

#168
20100098532
2010-04-22

COMPRESSOR HOUSING

#169
20100061840
2010-03-11

Compressor with variable-geometry ported shroud

#170
20100040458
2010-02-18

AXIAL FAN CASING DESIGN WITH CIRCUMFERENTIALLY SPACED WEDGES

#171
20100034637
2010-02-11

Fluid flow machine

#172
20100014956
2010-01-21

Fluid flow machine featuring a groove on a running gap of a blade end

#173
20090290974
2009-11-26

Annular flow duct for a turbomachine through which a main flow can flow in the axial direction

#174
20090263234
2009-10-22

Centrifugal compressor with surge control, and associated method

#175
20090246007
2009-10-01

Casing treatment for axial compressors in a hub area

#176
20090238677
2009-09-24

Centrifugal compressor with air extraction and return at the casing

#177
20090214334
2009-08-27

Centrifugal compressor

#178
20090208324
2009-08-20

Casing structure for stabilizing flow in a fluid-flow machine

#179
20090155047
2009-06-18

Compressor

#180
20090060708
2009-03-05

Radial flow compressor for a turbo-supercharger

#181
20090047117
2009-02-19

Flow control arrangement

#182
20090041576
2009-02-12

Fluid flow machine featuring an annulus duct wall recess

#183
20090013689
2009-01-15

Compressor for an internal combustion engine

#184
20080310961
2008-12-18

Blade shroud with protrusion

#185
20080292449
2008-11-27

Acoustic damper integrated to a compressor housing

#186
20080267765
2008-10-30

Centrifugal compressor with a re-circulation venturi in ported shroud

#187
20080259564
2008-10-23

Axial fan apparatus, housing, and electronic apparatus

#188
20080247866
2008-10-09

Compressor and compressor housing

#189
20080206040
2008-08-28

Anti-stall casing treatment for turbo compressors

#190
20080199306
2008-08-21

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

#191
20080134678
2008-06-12

EGR mixer and ported shroud compressor housing

#192
20080056882
2008-03-06

Compressor

#193
20080044273
2008-02-21

Turbomachine with reduced leakage penalties in pressure change and efficiency

#194
20070271921
2007-11-29

Inclined rib ported shroud compressor housing

#195
20070269308
2007-11-22

Engine intake air compressor having multiple inlets and method

#196
20070266705
2007-11-22

Engine intake air compressor and method

#197
20070224032
2007-09-27

Compressor apparatus with recirculation and method therefore

#198
20070217902
2007-09-20

Centrifugal compressor with surge control, and associated method

#199
20070212217
2007-09-13

Compressor casing

#200
20070196204
2007-08-23

Flow structure for a turbocompressor

#201
20070160459
2007-07-12

Blade and rotor arrangement

#202
20070147989
2007-06-28

Fan or compressor casing

#203
20070102234
2007-05-10

Duct for reducing shock related noise

#204
20060198727
2006-09-07

Turbocharger compressor having ported second-stage shroud, and associated method

#205
20060182623
2006-08-17

Taking air away from the tips of the rotor wheels of a high pressure compressor in a turbojet

#206
20060153673
2006-07-13

Turbomachine exerting dynamic influence on the flow

#207
20060088412
2006-04-27

Compressor including an enhanced vaned shroud

#208
20050249578
2005-11-10

Shockwave-induced boundary layer bleed

#209
20050226717
2005-10-13

Flow control arrangement

#210
20050163606
2005-07-28

Centrifugal compressor with channel ring defined inlet recirculation channel

#211
20050152786
2005-07-14

Turbo compressor

#212
20050152775
2005-07-14

Secondary flow control system

#213
20050111968
2005-05-26

Compressor having casing treatment slots

#214
20050058541
2005-03-17

Casing, a compressor, a turbine, and a combustion turbine engine including such a casing

#215
20050019152
2005-01-27

Recirculation structure for a turbocompressor

#216
20050008484
2005-01-13

Compressor

#217
20050002782
2005-01-06

Compressor

#218
18759050
2024-12-17

Active fan tip treatment using rotating drum array in fan track liner with axial and circumferential channels for distortion tolerance

#219
18758996
2025-01-28

Active fan tip treatment using rotating drum array with axial channels in fan track liner for distortion tolerance

#220
18660073
2025-02-04

Adjustable fan track liner with dual grooved array active fan tip treatment for distortion tolerance

#221
18660069
2025-04-29

Adjustable fan track liner with groove array active fan tip treatment for distortion tolerance

#222
18660065
2025-01-28

Adjustable fan track liner with dual slotted array active fan tip treatment for distortion tolerance

#223
18600620
2025-03-25

Adjustable fan track liner with slotted array active fan tip treatment for distortion tolerance