ClassID:

136895

F01D11/22 - CPC Classification

Classification description:

Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator; Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing; Actively adjusting tip-clearance by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor

Recent Application in this class:
#1
20260073240
2026-03-12

Control Logic for Thrust Link Whiffle-Tree Hinge Positioning for Improved Clearances

#2
20250354499
2025-11-20

SEAL SUPPORT ASSEMBLY FOR A TURBINE ENGINE

#3
20250257667
2025-08-14

VARIABLE FLOWPATH CASINGS FOR BLADE TIP CLEARANCE CONTROL

#4
20250163821
2025-05-22

TRAVEL STOP FOR A TIP CLEARANCE CONTROL SYSTEM

#5
20250163820
2025-05-22

ADJUSTABLE POSITION IMPELLER SHROUD FOR CENTRIFUGAL COMPRESSORS

#6
20250075627
2025-03-06

SYSTEMS AND METHODS OF ACTIVE CLEARANCE CONTROL IN A GAS TURBINE ENGINE

#7
20250027425
2025-01-23

TURBINE ENGINE TIP CLEARANCE CONTROL UTILIZING ELECTRIC MACHINE

#8
20240426245
2024-12-26

WATER ACTUATED TIP CLEARANCE CONTROL SYSTEM FOR TURBINE ENGINE

#9
20240410291
2024-12-12

ELEMENT AND METHOD FOR COMPENSATION OF TOLERANCES AND/OR GAP WIDTHS OF A DEVICE AND ENGINE, ASSEMBLY METHOD FOR A SHAFT/HUB CONNECTION

#10
20240360772
2024-10-31

RADIALLY RETRACTABLE OUTER AIR SEAL

#11
20240360771
2024-10-31

SHARED LOAD PATH BLADE OUTER AIR SEAL

#12
20240352865
2024-10-24

BLADE TIP CLEARANCE CONTROL USING MATERIAL WITH NEGATIVE THERMAL EXPANSION COEFFICIENTS

#13
20240318573
2024-09-26

SEAL SUPPORT ASSEMBLY FOR A TURBINE ENGINE

#14
20240301802
2024-09-12

Variable flowpath casings for blade tip clearance control

#15
20240035390
2024-02-01

TURBINE ENGINE WITH A ROTOR SEAL ASSEMBLY

#16
20240018912
2024-01-18

LOAD ADJUSTMENT METHOD, LOAD ADJUSTMENT DEVICE, AND PROGRAM

#17
20240018878
2024-01-18

Active clearance control of fan blade tip closure using a variable sleeve system

#18
20240011409
2024-01-11

Method for rotor blade tip clearance control and rotor blade manufactured by the method

#19
20240011408
2024-01-11

Variable flowpath casings for blade tip clearance control

#20
20230340887
2023-10-26

Clearance control of fan blades in a gas turbine engine

#21
20230332507
2023-10-19

HYDRAULIC THRUST BEARING FOR A GAS TURBINE UNIT FOR BLADE CLEARANCE ADJUSTMENT

#22
20230304415
2023-09-28

Clearance control system for a gas turbine engine

#23
20230203962
2023-06-29

Impeller shroud assembly and method for operating same

#24
20220397064
2022-12-15

Hybrid electric engine with electric tip clearance mechanism

#25
20220389825
2022-12-08

Turbine engine with a rotor seal assembly

#26
20220371738
2022-11-24

Control logic for thrust link whiffle-tree hinge positioning for improved clearances

#27
20220251966
2022-08-11

Gas turbine engine actuation device

#28
20220235667
2022-07-28

Steam turbine seal clearance adjusting method

#29
20220195883
2022-06-23

Turbomachine clearance control using magnetically responsive particles

#30
20220178266
2022-06-09

FAST RESPONSE ACTIVE CLEARANCE CONTROL SYSTEM WITH PIEZOELECTRIC ACTUATOR

#31
20220049614
2022-02-17

Systems and apparatus to control deflection mismatch between static and rotating structures

#32
20210396146
2021-12-23

Apparatus for controlling turbine blade tip clearance and gas turbine including the same

#33
20210394893
2021-12-23

Tip gap control systems with inner duct control surfaces

#34
20210381390
2021-12-09

Turbine guide apparatus

#35
20210131303
2021-05-06

Negative thermal expansion compressor case for improved tip clearance

#36
20210062824
2021-03-04

Impeller shroud with slidable coupling for clearance control in a centrifugal compressor

#37
20210040863
2021-02-11

Apparatus for adjusting clearance and gas turbine including the same

#38
20210040862
2021-02-11

Apparatus for adjusting clearance and gas turbine including the same

#39
20210010381
2021-01-14

Sealing arrangement between turbine shroud segments

#40
20210003028
2021-01-07

Method and control unit for controlling the play of a high-pressure turbine

#41
20200408224
2020-12-31

Clearance control system for a compressor shroud assembly

#42
20200400034
2020-12-24

Gas turbine engine tip clearance control system

#43
20200332726
2020-10-22

Active multi-effector control of high pressure turbine clearances

#44
20200332673
2020-10-22

Adaptive case for a gas turbine engine

#45
20200332672
2020-10-22

Blade tip clearance assembly with geared cam

#46
20200332671
2020-10-22

Blade tip clearance assembly

#47
20200300177
2020-09-24

Mission adaptive clearance control system and method of operation

#48
20200256214
2020-08-13

Axial-flow fluid machine and tip clearance measuring method therefor

#49
20200157965
2020-05-21

Mechanical iris tip clearance control

#50
20200080658
2020-03-12

Globe butterfly valve

#51
20200025149
2020-01-23

Stability margin and clearance control using power extraction and assist of a gas turbine engine

#52
20200025020
2020-01-23

Gas turbine engine ramped rapid response clearance control system

#53
20190383304
2019-12-19

Passive clearance control for a centrifugal impeller shroud

#54
20190353180
2019-11-21

Segregated impeller shroud for clearance control in a centrifugal compressor

#55
20190323514
2019-10-24

Impeller shroud with thermal actuator for clearance control in a centrifugal compressor

#56
20190292932
2019-09-26

Systems and methods for active clearance control based on selected operating mode

#57
20190195081
2019-06-27

Blade tip clearance control apparatus for gas turbine

#58
20190128286
2019-05-02

Impeller shroud with closed form refrigeration system for clearance control in a centrifugal compressor

#59
20190128135
2019-05-02

System and method of controlling tip clearance in a shroud assembly for a bladed disc

#60
20190120076
2019-04-25

Adjustable blade outer air seal apparatus

#61
20190101016
2019-04-04

Active centering control for static annular turbine flowpath structures

#62
20190017407
2019-01-17

Actuator for gas turbine engine blade outer air seal

#63
20190010823
2019-01-10

System for modulating turbine blade tip clearance

#64
20190010822
2019-01-10

System for modulating turbine blade tip clearance

#65
20180363483
2018-12-20

Turbine shroud assembly

#66
20180340441
2018-11-29

Optical fiber probe, optical fiber measuring device, and clearance control system

#67
20180328215
2018-11-15

METHOD AND DEVICE FOR CONTROLLING BLADE OUTER AIR SEALS

#68
20180291749
2018-10-11

Shroud assembly for turbine systems

#69
20180283196
2018-10-04

Movable air seal for gas turbine engine

#70
20180245403
2018-08-30

Downhole turbine with an adjustable shroud

#71
20180112550
2018-04-26

Blade tip clearance control for an axial compressor with radially outer annulus

#72
20180087395
2018-03-29

GAS TURBINE ENGINE

#73
20180073440
2018-03-15

CONTROLLING TURBINE SHROUD CLEARANCE FOR OPERATION PROTECTION

#74
20180038238
2018-02-08

Adjustable blade outer air seal system

#75
20180030846
2018-02-01

Gas turbine engine active clearance control system

#76
20180010475
2018-01-11

Blade track assembly with turbine tip clearance control

#77
20170343002
2017-11-30

Impeller shroud with deflecting outer member for clearance control in a centrifugal compressor

#78
20170343001
2017-11-30

Impeller shroud with pneumatic piston for clearance control in a centrifugal compressor

#79
20170342996
2017-11-30

Impeller shroud with slidable coupling for clearance control in a centrifugal compressor

#80
20170342995
2017-11-30

Segregated impeller shroud for clearance control in a centrifugal compressor

#81
20170342994
2017-11-30

Impeller shroud with thermal actuator for clearance control in a centrifugal compressor

#82
20170328230
2017-11-16

Mechanism and method for rapid response clearance control

#83
20170260869
2017-09-14

Gas turbine engine with compliant layer for turbine shroud mounts

#84
20170226886
2017-08-10

Method for clearance control in a gas turbine engine

#85
20170184033
2017-06-29

Method for the operation of a gas turbine by active hydraulic gap adjustment

#86
20170159483
2017-06-08

High response turbine tip clearance control system

#87
20170138212
2017-05-18

Rotor tip clearance

#88
20170096907
2017-04-06

Gas turbine tip clearance control assembly

#89
20170051627
2017-02-23

Turbine shroud assembly

#90
20170044923
2017-02-16

Turbine shroud assembly and method for loading

#91
20170044922
2017-02-16

System and method for supporting a turbine shroud

#92
20160369644
2016-12-22

Gas turbine rapid response clearance control system with annular piston

#93
20160356170
2016-12-08

Gas turbine engine rapid response clearance control system

#94
20160356169
2016-12-08

Turbine engine tip clearance control system with rocker arms

#95
20160356168
2016-12-08

Turbine engine tip clearance control system with later translatable slide block

#96
20160333721
2016-11-17

Cam-follower active clearance control

#97
20160312645
2016-10-27

Turbomachine blade clearance control system

#98
20160312644
2016-10-27

Accessible rapid response clearance control system

#99
20160305269
2016-10-20

Gas turbine engine rapid response clearance control system with variable volume turbine case

#100
20160305268
2016-10-20

Rapid response clearance control system with spring assist for gas turbine engine

#101
20160298483
2016-10-13

Active clearance control for axial rotor systems

#102
20160265380
2016-09-15

Gas turbine engine ramped rapid response clearance control system

#103
20160215647
2016-07-28

Translating compressor and turbine rotors for clearance control

#104
20160208926
2016-07-21

Splined honeycomb seals

#105
20160102571
2016-04-14

Axial turbomachine compressor outer casing with seal

#106
20160102565
2016-04-14

Tip-controlled integrally bladed rotor for gas turbine engine

#107
20160084101
2016-03-24

Gas turbine engine blade outer air seal assembly

#108
20160053629
2016-02-25

Ring seal for blade outer air seal gas turbine engine rapid response clearance control system

#109
20160053628
2016-02-25

Rapid response clearance control system for gas turbine engine

#110
20160053627
2016-02-25

Flexible feather seal for blade outer air seal gas turbine engine rapid response clearance control system

#111
20160053626
2016-02-25

Gas turbine engine rapid response clearance control system with air seal segment interface

#112
20160053624
2016-02-25

Radial position control of case supported structure with axial reaction member

#113
20160047266
2016-02-18

Movable air seal for gas turbine engine

#114
20160032754
2016-02-04

Adjustable blade outer air seal apparatus

#115
20160024956
2016-01-28

Floating blade outer air seal assembly for gas turbine engine

#116
20160017743
2016-01-21

Actuator for gas turbine engine blade outer air seal

#117
20160010560
2016-01-14

Sealing features for a gas turbine engine

#118
20150369076
2015-12-24

Hybrid passive and active tip clearance system

#119
20150285087
2015-10-08

Turbomachine blade clearance control system

#120
20150247415
2015-09-03

System and method for thrust bearing actuation to actively control clearance in a turbo machine

#121
20150218959
2015-08-06

VARIABLE CLEARANCE MECHANISM FOR USE IN A TURBINE ENGINE AND METHOD OF ASSEMBLY

#122
20150167488
2015-06-18

ADJUSTABLE CLEARANCE CONTROL SYSTEM FOR AIRFOIL TIP IN GAS TURBINE ENGINE

#123
20150167487
2015-06-18

Turbomachine cold clearance adjustment

#124
20150152743
2015-06-04

METHOD FOR MINIMIZING THE GAP BETWEEN A ROTOR AND A HOUSING

#125
20150132126
2015-05-14

Adjustable labyrinth seal

#126
20150098807
2015-04-09

Adjustable turbine seal and method of assembling same

#127
20150098806
2015-04-09

Systems and methods for dynamically sealing a turbine engine

#128
20150071767
2015-03-12

Clearance control system for a rotary machine and method of controlling a clearance

#129
20150071766
2015-03-12

Turbine casing clearance management system

#130
20150044018
2015-02-12

Active seal system

#131
20150037145
2015-02-05

Systems relating to axial positioning turbine casings and blade tip clearance in gas turbine engines

#132
20150016946
2015-01-15

Blade clearance control for gas turbine engine

#133
20150004038
2015-01-01

Adjustable core turbocharger

#134
20150003958
2015-01-01

Blade track assembly with turbine tip clearance control

#135
20140271147
2014-09-18

Blade track assembly with turbine tip clearance control

#136
20140250897
2014-09-11

Tip-controlled integrally bladed rotor for gas turbine

#137
20140212276
2014-07-31

Variable outer air seal fluid control

#138
20140212262
2014-07-31

Variable outer air seal support

#139
20140030059
2014-01-30

FLUID TURBINE WITH VARIABLE PITCH SHROUD SEGMENTS

#140
20140020390
2014-01-23

Clearance control for gas turbine engine seal

#141
20140017060
2014-01-16

Radial compressor blade clearance control system

#142
20130336758
2013-12-19

Variable blade outer air seal

#143
20130315716
2013-11-28

TURBOMACHINE HAVING CLEARANCE CONTROL CAPABILITY AND SYSTEM THEREFOR

#144
20130302147
2013-11-14

Inner turbine shell axial movement

#145
20130209240
2013-08-15

Adjustable blade outer air seal apparatus

#146
20130164114
2013-06-27

Adjustable core turbocharger

#147
20130156578
2013-06-20

Compressor airfoil tip clearance optimization system

#148
20130156541
2013-06-20

Active turbine tip clearance control system

#149
20130149117
2013-06-13

Steam turbine casing position adjusting apparatus

#150
20130129478
2013-05-23

Gas turbine rotor comprising an axially displaceable turbine rotor shaft

#151
20130022442
2013-01-24

Clearance control for a turbine

#152
20130017082
2013-01-17

Assembly for aligning an inner shell of a turbine casing

#153
20130017057
2013-01-17

Blade outer air seal assembly

#154
20120296593
2012-11-22

SYSTEM AND METHOD FOR DETERMINING POSITION OF ROTATING BLADES HAVING VARIABLE THICKNESS

#155
20120177483
2012-07-12

System for adjusting brush seal segments in turbomachine

#156
20120076638
2012-03-29

Axial turbomachine having an axially displaceable guide-blade carrier

#157
20120063884
2012-03-15

Clearance control system, turbomachine and method for adjusting a running clearance between a rotor and a casing of a turbomachine

#158
20120057958
2012-03-08

Clearance control system, turbomachine and method for adjusting a running clearance between a rotor and a casing of a turbomachine

#159
20120014778
2012-01-19

Sealing device for steam turbines and method for controlling sealing device

#160
20110318162
2011-12-29

Gas turbine engine rotor tip clearance and shaft dynamics system and method

#161
20110293407
2011-12-01

SEAL AND AIRFOIL TIP CLEARANCE CONTROL

#162
20110280712
2011-11-17

Passage wall section for an annular flow passage of an axial turbomachine with radial gap adjustment

#163
20110229301
2011-09-22

Active tip clearance control for shrouded gas turbine blades and related method

#164
20110131976
2011-06-09

Exhaust gas turbocharger for an internal combustion engine

#165
20110076137
2011-03-31

Casing component

#166
20110068539
2011-03-24

Seal structure for rotary machine

#167
20110002776
2011-01-06

Actuatable seal for aerofoil blade tip

#168
20110002774
2011-01-06

Active clearance control for a centrifugal compressor

#169
20100313404
2010-12-16

System and method for adjusting rotor-stator clearance

#170
20100303612
2010-12-02

System and method for clearance control

#171
20100296912
2010-11-25

Active Rotor Alignment Control System And Method

#172
20100296911
2010-11-25

Active casing alignment control system and method

#173
20100232942
2010-09-16

Arrangement for optimising the running clearance for turbomachines

#174
20100226760
2010-09-09

Turbine engine sealing arrangement

#175
20100209231
2010-08-19

Combination of mechanical actuator and case cooling apparatus

#176
20100104427
2010-04-29

Pressure activated flow path seal for a steam turbine

#177
20100054921
2010-03-04

Turbo engine

#178
20100003125
2010-01-07

Clearance arrangement

#179
20100003122
2010-01-07

Turbo engine

#180
20090317228
2009-12-24

Apparatus and method for controlling a blade tip clearance for a compressor

#181
20090297330
2009-12-03

Blade clearance arrangement

#182
20090266082
2009-10-29

Turbine blade tip clearance apparatus and method

#183
20090226306
2009-09-10

APPARATUS AND METHOD FOR ADJUSTING A BEARING ARRAY IN A GAS TURBINE AIRCRAFT ENGINE

#184
20090128166
2009-05-21

Apparatus to measure the clearance between a first component and a second component

#185
20090110547
2009-04-30

Method for producing a contoured gap, and turbo-engine comprising contoured gap

#186
20090097968
2009-04-16

Apparatus and method for clearance control of turbine blade tip

#187
20090014964
2009-01-15

Angled honeycomb seal between turbine rotors and turbine stators in a turbine engine

#188
20080267770
2008-10-30

Seal

#189
20080267769
2008-10-30

Gas turbine engine blade tip clearance apparatus and method

#190
20080247865
2008-10-09

Device and method for axially displacing a turbine rotor

#191
20080232949
2008-09-25

Turbomachine having an axially displaceable rotor

#192
20080169616
2008-07-17

Active retractable seal for turbo machinery and related method

#193
20080134659
2008-06-12

Zero running clearance centrifugal compressor

#194
20080131270
2008-06-05

Blade clearance system for a turbine engine

#195
20080063513
2008-03-13

Turbine blade tip gap reduction system for a turbine engine

#196
20070212216
2007-09-13

Turboengine and method for adjusting the stator and rotor of a turboengine

#197
20070128016
2007-06-07

Multi-range clearance measurement system and method of operation

#198
20070020095
2007-01-25

Apparatus and method for active control of blade tip clearance

#199
20070003411
2007-01-04

Variable displacement turbine liner

#200
20060285971
2006-12-21

Shroud tip clearance control ring

#201
20060140756
2006-06-29

Gas turbine engine blade tip clearance apparatus and method

#202
20060140755
2006-06-29

Gas turbine engine blade tip clearance apparatus and method

#203
20060013681
2006-01-19

Turbine case reinforcement in a gas turbine jet engine

#204
20060005529
2006-01-12

Blade clearance control

#205
20050220611
2005-10-06

Hybrid seal and system and method incorporating the same

#206
20050149274
2005-07-07

Method and system for active tip clearance control in turbines

#207
20050089401
2005-04-28

Turbine blade tip clearance system

#208
20050079048
2005-04-14

Method of minimizing the gap between a rotating turbine blade and a casing of a turbine, a turbine, and a method of determining the wear behavior of a wheel of a rotor

#209
20050069406
2005-03-31

Method and apparatus for turbomachine active clearance control

#210
18759050
2024-12-17

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

#211
18758996
2025-01-28

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

#212
18660069
2025-04-29

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

#213
18600620
2025-03-25

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

#214
17840293
2023-05-23

Clearance control of fan blades in a gas turbine engine

#215
15887491
2022-01-18

Turbine shroud ring for a gas turbine engine having a tip clearance probe