ClassID:

144154

F04D27/0292 - CPC Classification

Classification description:

Control, e.g. regulation, of pumps, pumping installations or systems; Surge control Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves

Recent Application in this class:
#1
20260009478
2026-01-08

CHECK VALVE DAMPING

#2
20250215886
2025-07-03

System and method for compressor performance monitoring and surge detection

#3
20240287994
2024-08-29

SURGE CONTROL SYSTEMS AND METHODS FOR DYNAMIC COMPRESSORS

#4
20240255070
2024-08-01

System, method, and valve assembly for surge protection

#5
20230417254
2023-12-28

Vacuum pump system and control method

#6
20230279864
2023-09-07

CONTROL DEVICE AND CONTROL METHOD FOR VACUUM PUMP

#7
20230202261
2023-06-29

Electric compressor

#8
20230146834
2023-05-11

CONTROL DEVICE AND CONTROL METHOD

#9
20220196025
2022-06-23

Surge control systems and methods for dynamic compressors

#10
20220154850
2022-05-19

CHECK VALVE DAMPING

#11
20220154726
2022-05-19

Compressor unit with a damped axial check valve for a discharge outlet

#12
20220010801
2022-01-13

Turbo blower capable of operating in surge area

#13
20210348620
2021-11-11

Electric pump

#14
20210215062
2021-07-15

Trunnion retention for a turbine engine

#15
20200116406
2020-04-16

Methods and systems for preventing premature compressor failure from improper operation

#16
20190186494
2019-06-20

Turbo pump vent assembly and method

#17
20190178161
2019-06-13

Bleed ejector

#18
20190154024
2019-05-23

Method for protecting an electric motor of a device with a motor driven consumer with a continuous capacity control system and choice of such a motor

#19
20190093503
2019-03-28

Trunnion retention for a turbine engine

#20
20180363666
2018-12-20

Software-based detection of thrust bearing failures for use with a motor driven compressor

#21
20180347588
2018-12-06

Centrifugal compressor

#22
20180320943
2018-11-08

Methods and systems for preventing premature compressor failure from improper operation

#23
20180283392
2018-10-04

Determining quality of gas for rotating equipment in a petrochemical plant or refinery

#24
20180238334
2018-08-23

Turbo-molecular pump

#25
20180223856
2018-08-09

Compressor system with a cooling arrangement between the anti-surge valve and the compressor suction side and relevant method

#26
20180149163
2018-05-31

Enhanced turbocompressor startup

#27
20180073512
2018-03-15

Assembly having two compressors, method for retrofitting

#28
20180023584
2018-01-25

Centrifugal compressor and magnetic bearing backup system for centrifugal compressor

#29
20170356346
2017-12-14

System and method to enhance corrosion turbine monitoring

#30
20170298955
2017-10-19

SYSTEM AND METHOD FOR RAPID PRESSURIZATION OF A MOTOR/BEARING COOLING LOOP FOR A HERMETICALLY SEALED MOTOR/COMPRESSOR SYSTEM

#31
20170291473
2017-10-12

Safety device for vehicle

#32
20170248166
2017-08-31

Vacuum pump and abnormality cause estimating method for vacuum pump

#33
20170218974
2017-08-03

Actuation system for varying blade pitch

#34
20170198705
2017-07-13

Multi-stage compression system, control device, control method, and program

#35
20170089346
2017-03-30

Ceiling fan system with brushless motor

#36
20170058683
2017-03-02

Variable pitch fan pitch range limiter

#37
20160376919
2016-12-29

Trunnion retention for a turbine engine

#38
20160363001
2016-12-15

Emergency shut-down detection system for a gas turbine

#39
20160318599
2016-11-03

Blade plug for communicating fluid therethrough

#40
20160318598
2016-11-03

Blade plug for communicating fluid therethrough

#41
20160130974
2016-05-12

Compressor monitoring method

#42
20160053765
2016-02-25

Battery monitoring system

#43
20160025096
2016-01-28

Vacuum pump

#44
20150362237
2015-12-17

Methods and systems for detecting and recovering from control instability caused by impeller stall

#45
20150330233
2015-11-19

Blade anchored securely in radial translation, propeller, turbine engine and aircraft

#46
20150300347
2015-10-22

Method for operating a compressor in case of failure of one or more measured signals

#47
20150275902
2015-10-01

Vacuum pump

#48
20150219110
2015-08-06

Centrifugal compressor startup control

#49
20150078881
2015-03-19

Arrangement with a vacuum pump and method of compensating magnetic field produced by magnetic interference field of at least one vacuum pump component

#50
20140241906
2014-08-28

Auxiliary power units (APUs) and methods and systems for activation and deactivation of a load compressor therein

#51
20140093385
2014-04-03

Safety retaining system for large industrial fan

#52
20140050607
2014-02-20

Vacuum pump and rotor thereof

#53
20140037422
2014-02-06

System and cooling for rapid pressurization of a motor-bearing cooling loop for a hermetically sealed motor/compressor system

#54
20140030058
2014-01-30

Enhanced turbocompressor startup

#55
20140023507
2014-01-23

Ceiling fan system with brushless motor

#56
20130230384
2013-09-05

Splinter shield for vacuum pump, and vacuum pump with the splinter shield

#57
20130224042
2013-08-29

Vacuum pump

#58
20130195608
2013-08-01

Droplet catcher for centrifugal compressor

#59
20130136587
2013-05-30

Centrifugal compressor

#60
20130136577
2013-05-30

Turbomachine casing assembly

#61
20130058775
2013-03-07

Catcher ring assembly

#62
20120317955
2012-12-20

Surge margin control

#63
20120301276
2012-11-29

Wear pin gap closure detection system for gas turbine engine

#64
20120266659
2012-10-25

Leak detector and process control therefor

#65
20120257990
2012-10-11

Control of subsea compressors

#66
20120251305
2012-10-04

IMPACTOR CONTAINMENT

#67
20120219400
2012-08-30

Vacuum pump

#68
20120141254
2012-06-07

VACUUM PUMP AND MEMBER USED FOR VACUUM PUMP

#69
20120131950
2012-05-31

Arrangement for liquefying natural gas and method for starting said arrangement

#70
20120020770
2012-01-26

Energy absorbing apparatus in a gas turbine engine

#71
20110308229
2011-12-22

Rotating catcher for impeller containment

#72
20110293403
2011-12-01

Blade monitoring system

#73
20110262277
2011-10-27

GAS TURBINE COMPOSITE WORKPIECE TO BE USED IN GAS TURBINE ENGINE

#74
20110200460
2011-08-18

VACUUM PUMP

#75
20110179644
2011-07-28

System for protecting bearings and seals of refrigerant compressor

#76
20110123355
2011-05-26

VACUUM PUMP

#77
20110103934
2011-05-05

Vacuum pump

#78
20110090514
2011-04-21

Apparatus and a method of measuring erosion of an edge of a turbomachine aerofoil

#79
20110085906
2011-04-14

Fan retention shaft

#80
20110052382
2011-03-03

Composite casing for rotating blades

#81
20110044826
2011-02-24

Vacuum pump

#82
20110040526
2011-02-17

Device and method for performing a functional test on a control element of a turbo engine

#83
20110011663
2011-01-20

Compressor and method for controlling a compressor for the compressed air supply of a commercial vehicle

#84
20100322785
2010-12-23

Compressor unit including a detection device to identify non-gaseous fluid in the suction line

#85
20100303644
2010-12-02

Vacuum pump

#86
20100232980
2010-09-16

Air compressor

#87
20100229626
2010-09-16

Apparatus for detecting a flammable atmosphere within a compressor, in particular a vacuum pump

#88
20100215498
2010-08-26

Blade for turbomachine receiving part, comprising an airfoil part including a mechanical fuse

#89
20100209254
2010-08-19

Vane for aircraft turbine engine receiver, provided with two hollow cores lodged in one another

#90
20100198480
2010-08-05

Method for detecting a “rotating stall” fault in a compressor fed by an inverter

#91
20100196180
2010-08-05

VACUUM PUMP

#92
20100192570
2010-08-05

Bursting protection

#93
20100178132
2010-07-15

Magnetized nut for fastening a compressor wheel of an exhaust turbocharger to the turbo shaft, and method for the production thereof

#94
20100150697
2010-06-17

Fluid release valve

#95
20100074725
2010-03-25

Method for controlling a turbocompressor

#96
20100054943
2010-03-04

Turbine rotor and turbine having the same

#97
20100028130
2010-02-04

Fan casing for a gas turbine engine

#98
20100028129
2010-02-04

Fan casing for a gas turbine engine

#99
20090297333
2009-12-03

Enhanced Turbocompressor Startup

#100
20090211653
2009-08-27

Vacuum pumping arrangement

#101
20090162191
2009-06-25

Real-time turbomachinery blade breakage monitoring unit and turbo-apparatus

#102
20090136361
2009-05-28

Vacuum turbomolecular pump

#103
20090092491
2009-04-09

Apparatus and related method for sensing cracks in rotating engine blades

#104
20090081056
2009-03-26

Molecular pump and flange having shock absorbing member

#105
20090068008
2009-03-12

FASTENING STRUCTURE AND ROTARY VACUUM PUMP

#106
20090060707
2009-03-05

Compressor inlet guide vane de-ice control system and method

#107
20080309184
2008-12-18

Support device for supporting a rotor for rotation

#108
20080292469
2008-11-27

Centrifugal air compressor

#109
20080273995
2008-11-06

Apparatus for Inhibiting the Propagation of a Flame Front

#110
20080240948
2008-10-02

Device for containing catastrophic failure of a turbomolecular pump

#111
20080226387
2008-09-18

Structure for Connecting End Parts and Vacuum System Using the Structure

#112
20080181763
2008-07-31

Turbofan gas turbine engine

#113
20080166246
2008-07-10

System for protecting bearings and seals of a refrigerant compressor

#114
20080131288
2008-06-05

Vacuum pump

#115
20080101917
2008-05-01

Device for limiting turbine overspeed in a turbomachine

#116
20080075587
2008-03-27

Ice strike sheathing ring for the fan casing of an aircraft gas turbine

#117
20080038118
2008-02-14

Pumping system

#118
20080034753
2008-02-14

Turbocharger Systems and Methods for Operating the Same

#119
20070253805
2007-11-01

Method for operating a turbocompressor

#120
20070166158
2007-07-19

Reverse rotation prevention device

#121
20070104598
2007-05-10

Fixing device for a vacuum pump

#122
20070066433
2007-03-22

Speed monitoring device

#123
20070065294
2007-03-22

Vacuum pump system

#124
20070041826
2007-02-22

Turbomolecular pump with static charge control

#125
20060283206
2006-12-21

Method for efficient nonsynchronous LNG production

#126
20060269391
2006-11-30

Gas turbine engine

#127
20060198735
2006-09-07

Vacuum pump and method of starting the same

#128
20060159547
2006-07-20

Warning system for turbine component contact

#129
20060153715
2006-07-13

Vacuum pumping system and method of operating a vacuum pumping arrangement

#130
20050274112
2005-12-15

Fatigue failure diagnostic method of turbocharger and fatigue failure diagnostic apparatus for turbocharger