ClassID:

144146

F04D27/023 - CPC Classification

Classification description:

Control, e.g. regulation, of pumps, pumping installations or systems; Surge control by bleeding, bypassing or recycling fluids Details or means for fluid extraction

Recent Application in this class:
#1
20250101987
2025-03-27

CENTRIFUGAL COMPRESSOR WITH ENERGY RECOVERY FROM A RECYCLE LINE

#2
20250075664
2025-03-06

AERO-ACOUSTICALLY DAMPENED BLEED VALVE

#3
20240263646
2024-08-08

Vortex cooled secondary flow for a supercritical carbon dioxide pump

#4
20240084713
2024-03-14

System for controlling discharge doors of a turbomachine

#5
20240026794
2024-01-25

Flow deflector for aperture in gas turbine engine flowpath wall

#6
20230358181
2023-11-09

Aero-acoustically dampened bleed valve

#7
20230228220
2023-07-20

Aero-acoustically dampened bleed valve

#8
20230175522
2023-06-08

Stabilizer of a compressor

#9
20230160386
2023-05-25

Compression mechanism and scroll compressor

#10
20230126388
2023-04-27

Inline pneumatic valve with internal bushing

#11
20230109588
2023-04-06

Spring loaded sleeve valve with controlled closing force

#12
20230024289
2023-01-26

Centrifugal compressor and method of operating the same

#13
20230011820
2023-01-12

MULTISTAGE CENTRIFUGAL PUMP

#14
20220364476
2022-11-17

Bleed air extraction device for a gas turbine engine

#15
20220275762
2022-09-01

Axial turbine engine, and rectifier stage with variable orientation vanes for an axial turbine engine

#16
20210348619
2021-11-11

Passive bleed valves with adjustable pressure threshold

#17
20210348618
2021-11-11

Gas turbine compressor radial door bleed valve

#18
20210222587
2021-07-22

Externally replaceable valve assembly for a turbine engine

#19
20210164493
2021-06-03

Centrifugal compressor and method of operating the same

#20
20200386109
2020-12-10

Bleed air extraction device for a gas turbine engine

#21
20200370560
2020-11-26

Bleed valve

#22
20200277902
2020-09-03

Method of operating gas turbine and gas turbine

#23
20200141417
2020-05-07

BOOSTER COMPRESSOR WITH SPEED CHANGE SYSTEM

#24
20200109720
2020-04-09

VARIABLE GEOMETRY DIFFUSER

#25
20200088097
2020-03-19

Ported shroud system for turboprop inlets

#26
20200040902
2020-02-06

Passively controlled inline bleed valves

#27
20200040901
2020-02-06

Passive bleed valves with adjustable pressure threshold

#28
20190383160
2019-12-19

Discharge door control ring for aircraft turbomachine and turbomachine comprising the same

#29
20190345875
2019-11-14

Intermediate housing hub comprising discharge flow guiding channels formed by the discharge fins

#30
20190309762
2019-10-10

Bleed valve with regulated opening

#31
20190277194
2019-09-12

Adjustable snap action passive inline air valve

#32
20190226496
2019-07-25

TURBOCHARGER

#33
20190219068
2019-07-18

Multi-stage pump with enhanced thrust balancing features

#34
20190178161
2019-06-13

Bleed ejector

#35
20190153963
2019-05-23

Gas turbine and method for operating gas turbine

#36
20190145420
2019-05-16

Gas turbine engine with mid-compressor bleed

#37
20190101061
2019-04-04

Switching bleed valve for a gas turbine engine

#38
20180355878
2018-12-13

System for discharging a compressor flow of a turbine engine

#39
20180347401
2018-12-06

Compressors with integrated secondary air flow systems

#40
20180274451
2018-09-27

Compressor arrangement and gas turbine engine

#41
20180216636
2018-08-02

Valve assembly

#42
20180209351
2018-07-26

Method for controlling surge margin of gas turbine and extraction device for gas turbine

#43
20180100441
2018-04-12

Bleed valve assembly for a gas turbine engine

#44
20180100440
2018-04-12

Bleed valve assembly for a gas turbine engine

#45
20180010611
2018-01-11

Compressor control system and method

#46
20170370371
2017-12-28

Methods and systems for detecting compressor recirculation valve faults

#47
20170356348
2017-12-14

Altitude compensating bleed valve

#48
20170335775
2017-11-23

Solenoids for gas turbine engine bleed valves

#49
20170268374
2017-09-21

System and method for actuating gas turbine engine components using integrated jamming devices

#50
20170254274
2017-09-07

High pressure compressor augmented bleed with autonomously actuated valve

#51
20170218853
2017-08-03

Methods and apparatus to adjust bleed ports on an aircraft engine

#52
20170211595
2017-07-27

Extracting dry gas from a wet-gas compressor

#53
20170191484
2017-07-06

Systems and methods for a compressor diffusion slot

#54
20170176053
2017-06-22

Hot gas bypass for two-stage compressor

#55
20170125162
2017-05-04

System and method for increasing coupling of an axle rotary transformer

#56
20160348685
2016-12-01

Translating gaspath bleed valve

#57
20160245186
2016-08-25

Self-actuating and dual pivot flapper valve

#58
20160237913
2016-08-18

Full-area bleed valves

#59
20160169241
2016-06-16

Compressor and gas turbine

#60
20160169034
2016-06-16

Core case heating for gas turbine engines

#61
20160153361
2016-06-02

Bleed valve resonance augmentations

#62
20160153311
2016-06-02

Bleed valve resonator drain

#63
20160131145
2016-05-12

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

#64
20160123176
2016-05-05

High pressure compressor rotor thermal conditioning using outer diameter gas extraction

#65
20160027576
2016-01-28

System and method for increasing coupling of an axle rotary transformer

#66
20150369133
2015-12-24

Sliding contact wear surfaces coated with PTFE/aluminum oxide thermal spray coating

#67
20150285143
2015-10-08

Combined ball valve for compressor bleed air and methods

#68
20150211540
2015-07-30

Bleed valve

#69
20150176499
2015-06-25

Process for preventing rotating stall and surge in a turbomachine

#70
20150132115
2015-05-14

Gas turbine compressor bleed channel

#71
20150104289
2015-04-16

Methods and apparatus to adjust bleed ports on an aircraft engine

#72
20150101481
2015-04-16

Method for improved assembly of an actuator for an air bleed valve of a turbine engine

#73
20150096296
2015-04-09

Methods and systems for detecting compressor recirculation valve faults

#74
20150059315
2015-03-05

Apparatus and method for bleeding off compressor air in a jet engine

#75
20150027130
2015-01-29

Split ring valve

#76
20140369804
2014-12-18

Variable bleed slot in centrifugal impeller

#77
20140345294
2014-11-27

Gas turbine engine with bleed duct for minimum reduction of bleed flow and minimum rejection of hail during hail ingestion events

#78
20140286746
2014-09-25

Compressor shroud reverse bleed holes

#79
20140271108
2014-09-18

Compressor bleed self-recirculating system

#80
20140245747
2014-09-04

Gas turbine engine two degree of freedom variable bleed valve for ice extraction

#81
20140202202
2014-07-24

Centrifugal compressor

#82
20140109589
2014-04-24

Gas turbine engine variable bleed valve for ice extraction

#83
20140105723
2014-04-17

Gas turbine diffuser blowing method and corresponding diffuser

#84
20140096536
2014-04-10

Bleed air slot

#85
20140093375
2014-04-03

Reduced height ligaments to minimize non-integral vibrations in rotor blades

#86
20140075956
2014-03-20

Turbomachine with bleed valves located at the intermediate case

#87
20140069096
2014-03-13

Recirculation valve and turbocharger

#88
20140033735
2014-02-06

Turbomachine including horizontal joint heating and method of controlling tip clearance in a gas turbomachine

#89
20140026560
2014-01-30

Relief valve

#90
20130343883
2013-12-26

TWO-PIECE DUCT ASSEMBLY

#91
20130343876
2013-12-26

Spherical-link end damper system with near constant engagement

#92
20130341875
2013-12-26

BULB SEAL WITH METAL BACKED FASTENER

#93
20130341547
2013-12-26

Four bar drive mechanism for bleed system

#94
20130340555
2013-12-26

Four bar bracket

#95
20130340441
2013-12-26

Aerodynamic intercompressor bleed ports

#96
20130340440
2013-12-26

Machined aerodynamic intercompressor bleed ports

#97
20130333365
2013-12-19

Controlling method and system for compressed air supply to a pneumatic network, in particular in an aircraft

#98
20130302155
2013-11-14

Centrifugal compressor and manufacturing method thereof

#99
20130236300
2013-09-12

Housing and turbomachine

#100
20130195610
2013-08-01

Noise-reduced turbomachine

#101
20130039781
2013-02-14

ANTICIPATION LOGIC FOR A SURGE CONTROL VALVE UTILIZED WITH LOAD COMPRESSOR

#102
20130017066
2013-01-17

Compressors with integrated secondary air flow systems

#103
20120315131
2012-12-13

Axial turbocompressor

#104
20120288359
2012-11-15

Gas-turbine engine with bleed-air tapping device

#105
20120275912
2012-11-01

Axial compressor with arrangement for bleeding air from variable stator vane stages

#106
20120167589
2012-07-05

Gas turbine engine and system for modulating secondary air flow

#107
20120128470
2012-05-24

Self-actuating bleed valve for a gas turbine engine

#108
20120121400
2012-05-17

Compressor of exhaust gas turbocharger

#109
20120070271
2012-03-22

GAS TURBINE ENGINE WITH BLEED DUCT FOR MINIMUM REDUCTION OF BLEED FLOW AND MINIMUM REJECTION OF HAIL DURING HAIL INGESTION EVENTS

#110
20120060506
2012-03-15

Gas turbine engine havinga rotatable off-take passage in a compressor section

#111
20120039702
2012-02-16

Compressor

#112
20110280710
2011-11-17

Reversible system for injecting and extracting gas for fluid rotary machines

#113
20110274537
2011-11-10

BLADE EXCITATION REDUCTION METHOD AND ARRANGEMENT

#114
20110229310
2011-09-22

System for controlling variable geometry equipment of a gas turbine engine particularly comprising a barrel link

#115
20110184573
2011-07-28

System for controlling variable geometry equipment for a turbine engine, especially by bellcranks

#116
20110182716
2011-07-28

System for controlling variable geometry apparatuses in a turbine engine

#117
20110110773
2011-05-12

Turbomachine compressor

#118
20110097196
2011-04-28

Air discharge system for an aeronautical turbine engine compressor

#119
20110072829
2011-03-31

Gas turbine high pressure compressor fluid return and reinjection including an annular air bleeding manifold

#120
20110016877
2011-01-27

Continuous slot in shroud

#121
20100300119
2010-12-02

Pump for supplying cryogenic coolant

#122
20100275613
2010-11-04

Compressor for a gas turbine

#123
20100232935
2010-09-16

Air bleed in compressor with variable guide vanes

#124
20100223903
2010-09-09

Variable pressure ratio compressor

#125
20100158662
2010-06-24

System for controlling at least two variable-geometry equipments of a gas turbine engine, particularly by rack

#126
20100111688
2010-05-06

Axial-centrifugal compressor with ported shroud

#127
20100083667
2010-04-08

Bi-modal bleed valve assembly for gas turbine engine

#128
20100080684
2010-04-01

System for controlling variable-geometry equipments of a turbomachine, particularly by articulated bellcranks

#129
20090301102
2009-12-10

Gas-turbine compressor with bleed-air tapping

#130
20090238677
2009-09-24

Centrifugal compressor with air extraction and return at the casing

#131
20090235643
2009-09-24

Valve system for a gas turbine engine

#132
20090229244
2009-09-17

Device for pivoting at least one pivotable element in a gas turbine engine

#133
20090188257
2009-07-30

Aeroengine bleed valve

#134
20090121172
2009-05-14

Relief valve in a turbomachine

#135
20090110544
2009-04-30

Inflatable bleed valve for a turbine engine

#136
20090056307
2009-03-05

Actuating device, bypass air bleed system equipped therewith, and turbojet engine comprising these

#137
20090047117
2009-02-19

Flow control arrangement

#138
20090000306
2009-01-01

Stator assembly including bleed ports for turbine engine compressor

#139
20080279676
2008-11-13

Turbine anti-rotating stall schedule

#140
20080199308
2008-08-21

Air intake circuit arrangement for high pressure compressor of a turbine engine

#141
20080193279
2008-08-14

Relief device for a turbojet and a turbojet comprising same

#142
20080159861
2008-07-03

Compressor with centripetal air takeoff

#143
20080115503
2008-05-22

MULTI-PORT BLEED SYSTEM WITH VARIABLE GEOMETRY EJECTOR PUMP

#144
20080101922
2008-05-01

Asymmetric compressor air extraction method

#145
20080063515
2008-03-13

Bleed system for a low-pressure compressor of a turbomachine

#146
20080050218
2008-02-28

Aeroengine bleed valve

#147
20080028764
2008-02-07

Bleed off valve system

#148
20070289286
2007-12-20

Gas turbine with a compressor housing which is protected against cooling down and method for operating a gas turbine

#149
20070261410
2007-11-15

Bleed air relief system for engines

#150
20070234738
2007-10-11

Self-actuating bleed valve for gas turbine engine

#151
20070137175
2007-06-21

Compact booster bleed turbofan

#152
20070089429
2007-04-26

Bleed valve for a gas turbine engine

#153
20070086885
2007-04-19

Bleed valve outlet flow deflector

#154
20070080262
2007-04-12

Device for moving at least one moveable element in a gas turbine

#155
20070057213
2007-03-15

Adjustable valve, in particular a recirculation valve for a turbocharger

#156
20070053770
2007-03-08

Methods and apparatus for operating gas turbine engines

#157
20060239812
2006-10-26

Method of regulating the flow rate of air in a rotary shaft of a turbomachine

#158
20060222485
2006-10-05

Method for air circulation in a turbomachine compressor, compressor arrangement using this method, compression stage and compressor incorporating such a arrangement, and aircraft engine equipped with such a compressor

#159
20060182623
2006-08-17

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

#160
20060153673
2006-07-13

Turbomachine exerting dynamic influence on the flow

#161
20060070655
2006-04-06

Valve

#162
20060039782
2006-02-23

Compressor bleed air manifold for blade clearance control

#163
20050226717
2005-10-13

Flow control arrangement

#164
20050106009
2005-05-19

Bleed housing

#165
20050019156
2005-01-27

Bleed valve system

#166
20050008476
2005-01-13

Inflatable compressor bleed valve system

#167
18525046
2025-02-11

Bleed valve assembly for aircraft engines