ClassID:

136976

F01D25/22 - CPC Classification

Classification description:

Component parts, details, or accessories, not provided for in, or of interest apart from, other groups; Lubricating arrangements using working-fluid or other gaseous fluid as lubricant

Recent Application in this class:
#1
20250250952
2025-08-07

Rocket Engine

#2
20250003367
2025-01-02

Bearing configuration for a rotational equipment assembly

#3
20240318575
2024-09-26

Method and system for de-priming an aircraft engine component containing a flammable fluid for fire safety

#4
20240318566
2024-09-26

Seal support assembly for a turbine engine

#5
20240011411
2024-01-11

TURBINE-GENERATOR ASSEMBLY WITH MAGNETIC COUPLING

#6
20230220872
2023-07-13

Circumferential seal assembly with multi-axis stepped grooves

#7
20220357103
2022-11-10

Plant and method for liquefying gas

#8
20220356905
2022-11-10

Circumferential seal assembly with multi-axis stepped grooves

#9
20210207532
2021-07-08

Gas turbine engine including squeeze film damper with reservoir

#10
20210003034
2021-01-07

Externally pressurized fluid-film bearing system including hermetic fluid damper with pass-through channels

#11
20200292211
2020-09-17

Gas expansion system

#12
20200224718
2020-07-16

Circumferential back-to-back seal assembly with bifurcated flow

#13
20200208536
2020-07-02

Active thrust management of a turbopump within a supercritical working fluid circuit in a heat engine system

#14
20200158175
2020-05-21

Circumferential seal assembly with multi-axis stepped grooves

#15
20200040940
2020-02-06

Fluid bearing assembly

#16
20190368549
2019-12-05

Axial load management system

#17
20190284935
2019-09-19

Radial—axial turboexpander

#18
20190226519
2019-07-25

Tilting pad journal bearing manufacturing method, tilting pad journal bearing, and compressor

#19
20190226399
2019-07-25

Method of increasing the safety of a power plant, and a power plant suitable for implementing the method

#20
20190136862
2019-05-09

Modular compressor with gas bearings and system for raising the pressure in production gas

#21
20190101014
2019-04-04

Dual hydorstatic seal assembly

#22
20190085768
2019-03-21

Bearing structure for turbocharger and turbocharger

#23
20190048931
2019-02-14

Intershaft seal assembly with multi-axis stepped grooves

#24
20190017606
2019-01-17

Hydrostatic non-contact seal with offset outer ring

#25
20190017547
2019-01-17

Circumferential seal with bifurcated flow along multi-axis stepped grooves

#26
20190003481
2019-01-03

Dry gas seal cooling arrangement and method

#27
20180372228
2018-12-27

Hydrostatic non-contact seal with weight reduction pocket

#28
20180340470
2018-11-29

Method and structure of interdigitated turbine engine thermal management

#29
20180340469
2018-11-29

Interdigitated turbine engine air bearing and method of operation

#30
20180340446
2018-11-29

Interdigitated turbine engine air bearing cooling structure and method of thermal management

#31
20180340423
2018-11-29

Air bearing and thermal management nozzle arrangement for interdigitated turbine engine

#32
20180223869
2018-08-09

Turbomachine and method of operating a turbomachine

#33
20180223690
2018-08-09

Non-contacting seals for geared gas turbine engine bearing compartments

#34
20180180096
2018-06-28

Circumferential back-to-back seal assembly with bifurcated flow

#35
20180149088
2018-05-31

Compressed air bleed supply for buffer system

#36
20180128180
2018-05-10

Support providing a complete connection between a turbine shaft and a degassing pipe of a turbojet

#37
20180087573
2018-03-29

Pressurized gas bearings for rotating machinery

#38
20180073639
2018-03-15

Air riding seal arrangement

#39
20180066705
2018-03-08

Snap joint for externally pressurized gas bearings

#40
20180030855
2018-02-01

Integrated turboexpander-generator with gas-lubricated bearings

#41
20180003069
2018-01-04

Face seal assembly and an associated method thereof

#42
20170335865
2017-11-23

Method and system for mitigating rotor bow

#43
20170314419
2017-11-02

Active thrust management of a turbopump within a supercritical working fluid circuit in a heat engine system

#44
20170298773
2017-10-19

Bearing having integrally formed components

#45
20170298772
2017-10-19

Rotary machine with gas bearings

#46
20170298755
2017-10-19

COMPRESSOR SYSTEM

#47
20170298752
2017-10-19

Gas bearing seal

#48
20170226918
2017-08-10

Cooling device having a refrigerant supply part of a condenser arranged higher than a shaft part of a turbine in a gravity direction

#49
20170191379
2017-07-06

Systems and methods for controlling backpressure in a heat engine system having hydrostaic bearings

#50
20170122205
2017-05-04

Differential gas bearing for aircraft engines

#51
20170122127
2017-05-04

Non-contacting seals for geared gas turbine engine bearing compartments

#52
20170051671
2017-02-23

Variable geometries fluid supply circuit for a turbomachine without volumetric pump

#53
20160376924
2016-12-29

Gas turbine engine

#54
20160333737
2016-11-17

Turbocharger with oil-free hydrostatic bearing

#55
20160290388
2016-10-06

Bearing arrangement

#56
20160272329
2016-09-22

Air cycle machine with cooling air flow path

#57
20160201508
2016-07-14

Gas turbine engine and foil bearing system

#58
20160186799
2016-06-30

Foil bearing unit

#59
20160146248
2016-05-26

Compliant hybrid gas lubricated thrust bearing

#60
20160090864
2016-03-31

MULTI-FLUID CARGO PUMPS

#61
20160069269
2016-03-10

Vibration damping apparatus for hydrostatic seal of gas turbine engine

#62
20160053808
2016-02-25

Circumferential back-to-back seal assembly with bifurcated flow

#63
20150292552
2015-10-15

Bearing sleeve for air bearing

#64
20150292345
2015-10-15

Pressurized seal system for a power turbine unit

#65
20150275685
2015-10-01

Face seal with locally compliant hydrodynamic pads

#66
20150211384
2015-07-30

Systems and methods for lubricating bearings of rotating equipment in gas processing systems

#67
20150125324
2015-05-07

ROTARY COMPRESSOR

#68
20150104124
2015-04-16

Hermetically sealed damper assembly and methods of assembling same

#69
20150104123
2015-04-16

Journal bearing assemblies and methods of assembling same

#70
20150049968
2015-02-19

Circumferential back-to-back seal assembly with bifurcated flow

#71
20150037139
2015-02-05

Turbocharger air bearing

#72
20140255156
2014-09-11

Non-contacting seals for geared gas turbine engine bearing compartments

#73
20140216004
2014-08-07

Compressed air bleed supply for buffer system

#74
20140185969
2014-07-03

Bearing arrangement

#75
20140119898
2014-05-01

Bearing device for turbocharger

#76
20140013748
2014-01-16

Method for operating a solar installation

#77
20130247538
2013-09-26

Oil discharge device and turbomachine comprising such a device

#78
20130192240
2013-08-01

BUFFER SYSTEM FOR A GAS TURBINE ENGINE

#79
20130180242
2013-07-18

Engine assembly and waste heat recovery system

#80
20130177398
2013-07-11

System for pressuring the bearing chambers of turbine engines machines using air taken from the intake duct

#81
20130142671
2013-06-06

Method and system to reduce to wear on a bearing

#82
20130089409
2013-04-11

Non-lubricated architecture for a turboshaft engine

#83
20130071055
2013-03-21

FLUID-RIDING DEVICE

#84
20130048091
2013-02-28

Valve for controlling flow of a turbomachine fluid

#85
20120312009
2012-12-13

EXPANDER LUBRICATION IN VAPOUR POWER SYSTEMS

#86
20120217703
2012-08-30

Intershaft seal system for minimizing pressure induced twist

#87
20120152383
2012-06-21

Thrust bearing shaft for thrust and journal air bearing cooling in an air machine

#88
20120060463
2012-03-15

Oil varnish mitigation systems

#89
20120016178
2012-01-19

Rotary pump with hydrodynamically suspended impeller

#90
20110194933
2011-08-11

Gas turbine engine and foil bearing system

#91
20110138817
2011-06-16

Method of increasing the safety of a power plant, and a power plant suitable for implementing the method

#92
20110047958
2011-03-03

Turbine generator system

#93
20110038717
2011-02-17

Oil-free turbocharger assembly

#94
20100192571
2010-08-05

Turbocharger Having a Turbocharger Housing

#95
20100028718
2010-02-04

Coating precursor materials, turbomachinery components, and methods of forming the turbomachinery components

#96
20090188253
2009-07-30

Expander lubrication in vapour power systems

#97
20090155049
2009-06-18

Rotary pump with hydrodynamically suspended impeller

#98
20090033037
2009-02-05

SEAL ASSEMBLY

#99
20090004032
2009-01-01

Deswirl mechanisms and roller bearings in an axial thrust equalization mechanism for liquid cryogenic turbomachinery

#100
20080136190
2008-06-12

Micro power generating device

#101
20080084030
2008-04-10

Segmented air floating seal

#102
20080038109
2008-02-14

Turbomachine

#103
20080003099
2008-01-03

Closed bias air film riding seal in event of housing breach for shared engine lubrication accessory gearboxes

#104
20070056285
2007-03-15

Monocoque turbo-generator

#105
20070039330
2007-02-22

Air thrust bearing for a gas turbine engine

#106
20070007771
2007-01-11

Energy recovery system

#107
20070000282
2007-01-04

Device and method for cryogenically seperating a gas mixture

#108
20060153704
2006-07-13

Compressor ported shroud for foil bearing cooling

#109
20060030748
2006-02-09

Rotary pump with hydrodynamically suspended impeller

#110
20050281685
2005-12-22

Rotary pump with exclusively hydrodynamically suspended impeller

#111
20050163406
2005-07-28

Inorganic solid lubricant for high temperature foil bearing

#112
20050089392
2005-04-28

Rotor and bearing system for a turbomachine

#113
18105632
2024-02-20

Buffer air method and system for a bearing compartment

#114
16375999
2020-03-03

Self-metering hydrostatic thrust bearing

#115
14607846
2018-08-21

Turbocharger with oil-free hydrostatic bearing

#116
14053648
2014-07-08

Non-contacting seals for geared gas turbine engine bearing compartments