ClassID:

144140

F04D27/008 - CPC Classification

Classification description:

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

Recent Application in this class:
#1
20260146621
2026-05-28

METHODS AND APPARATUS FOR CONTROLLING FAN DEVICES

#2
20260117966
2026-04-30

LIGHTING APPARATUS

#3
20260110307
2026-04-23

AIR PUMP DEVICE WITH AUTOMATIC AIR REPLENISHING FUNCTION AND METHOD OF USING SAME

#4
20260110303
2026-04-23

TURBO PUMP SYSTEM

#5
20260102727
2026-04-16

FAN FILTER UNIT AND CONTROL METHOD THEREOF

#6
20260071631
2026-03-12

SHUT-OFF VALVE AND VACUUM PUMP

#7
20260028973
2026-01-29

MULTI-PRESSURE INTEGRATED AIR PUMP

#8
20250317084
2025-10-09

OPERATION RECORDING SYSTEM, VEHICLE, OPERATION RECORDING METHOD AND OPERATION RECORDING PROGRAM

#9
20250230816
2025-07-17

Obstacle Avoidance System And Method Thereof

#10
20250227893
2025-07-10

FAN CONTROL SYSTEM, SERVER SYSTEM, AND FAN CONTROL METHOD AND APPARATUS

#11
20250215885
2025-07-03

PUMP CONTROL METHOD AND APPARATUS

#12
20250195804
2025-06-19

COMPRESSOR FOR DELIVERING AN AIR AND/OR GAS STREAM

#13
20250163926
2025-05-22

FAN BRAKE CIRCUIT

#14
20250059983
2025-02-20

WEARABLE AIR CIRCULATION DEVICES AND METHODS OF USE

#15
20250043762
2025-02-06

UNDERWATER FLOW TURBINE

#16
20240410381
2024-12-12

VACUUM PUMP AND CONTROL DEVICE

#17
20240364106
2024-10-31

Portable Vehicle Battery Jump Starter with Air Pump

#18
20240170700
2024-05-23

FUEL CELL SYSTEM HAVING AN AIR COMPRESSOR AND A DRIVING CONTROL METHOD FOR A MOTOR OF THE AIR COMPRESSOR

#19
20230417254
2023-12-28

Vacuum pump system and control method

#20
20230358823
2023-11-09

Fan fault detection device

#21
20230349387
2023-11-02

SYSTEM AND METHOD FOR ENSURING CONTINUED OPERATION OF FAN NOTWITHSTANDING BMC FAILURE

#22
20230340963
2023-10-26

CEILING FAN

#23
20230332587
2023-10-19

MULTI-PRESSURE INTEGRATED AIR PUMP

#24
20230323887
2023-10-12

Methods and apparatus for controlling fan devices

#25
20230279864
2023-09-07

CONTROL DEVICE AND CONTROL METHOD FOR VACUUM PUMP

#26
20230258191
2023-08-17

DRY VACUUM PUMP REGENERATION MECHANISM AND DRY VACUUM PUMP REGENERATION METHOD

#27
20230250828
2023-08-10

COMPRESSOR AND OUTDOOR UNIT OF AIR-CONDITIONING APPARATUS, WHICH INCLUDES THE SAME

#28
20230228274
2023-07-20

Compression system, chemical plant, and method of operating compression system

#29
20230208135
2023-06-29

Portable vehicle battery jump starter with air pump

#30
20230173204
2023-06-08

Fan having damping and sealing elements between various housing parts

#31
20230137224
2023-05-04

Variable speed pumping system and method

#32
20230116404
2023-04-13

VARIABLE SPEED PUMPING SYSTEM AND METHOD

#33
20230115422
2023-04-13

VARIABLE SPEED PUMPING SYSTEM AND METHOD

#34
20230032935
2023-02-02

DIRECTING AIR STREAMS AT A TARGET

#35
20230016189
2023-01-19

Concealed office fan lamp

#36
20230003223
2023-01-05

Water-conserving liquid ring vacuum pump system

#37
20220355939
2022-11-10

Cabin blower system

#38
20220333607
2022-10-20

VACUUM PUMP AND ACCESSORY UNIT OF VACUUM PUMP

#39
20220290681
2022-09-15

Ceiling fan

#40
20220235787
2022-07-28

Estimation device, vacuum valve, and vacuum pump

#41
20220192289
2022-06-23

Mask device and method for controlling the same

#42
20220186738
2022-06-16

Ceiling fan system with brushless motor

#43
20220166345
2022-05-26

CONTROL DEVICE, ELECTRIC COMPRESSOR, AND CONTROL METHOD

#44
20220124940
2022-04-21

Fan control device with power saving mode and startup delay setting

#45
20220117113
2022-04-14

Controller with fan monitoring and control

#46
20220065257
2022-03-03

Inflatable product with integrated air pump

#47
20210404479
2021-12-30

Systems and methods for protecting sealed compressor electrical feedthrough

#48
20210396240
2021-12-23

Centrifugal pump device

#49
20210396239
2021-12-23

Fan control system, method and server wherein PWM pin and TACH pin are utilized to control a fan based on a mode control instruction

#50
20210310496
2021-10-07

Fluid leak diverter

#51
20210293249
2021-09-23

Methods and apparatus for controlling fan devices

#52
20210285605
2021-09-16

Connected backfeeding installation and method for operating such an installation

#53
20210270276
2021-09-02

Protection method and system for use in fan malfunction

#54
20210262481
2021-08-26

Sealing system, and pump system including the sealing system

#55
20210254876
2021-08-19

Compressor and chiller system having the same

#56
20210229820
2021-07-29

Aircraft egress system

#57
20210207605
2021-07-08

Digital inflation and deflation adjustment structure for a pump

#58
20210180603
2021-06-17

Ceiling fan system with brushless motor

#59
20210180602
2021-06-17

Ceiling fan with concentric stationary tube and power-down features

#60
20210156388
2021-05-27

Method for determining operating states of a fan

#61
20210148995
2021-05-20

Fan fault detection device

#62
20210071675
2021-03-11

Fan control system

#63
20210033100
2021-02-04

Blower filter device for potentially explosive areas and process for operating a blower filter device

#64
20210033099
2021-02-04

Aerodynamic anti-rotation device

#65
20210018013
2021-01-21

Air pump with automatic stop of inflation and deflation

#66
20210003120
2021-01-07

Multi-pressure integrated air pump

#67
20200378395
2020-12-03

METHOD AND SYSTEM FOR IDENTIFYING A FAILURE IN A COOLING SYSTEM COMPRESSOR AND COOLING SYSTEM COMPRESSOR

#68
20200332811
2020-10-22

Vacuum pump, and stator component, discharge port, and control means used therein

#69
20200332803
2020-10-22

Cooling fan monitoring circuit

#70
20200312124
2020-10-01

External smart device for a ceiling fan receiving box

#71
20200191506
2020-06-18

Fan array fault response control system

#72
20200132083
2020-04-30

Air pump control system and method

#73
20200131927
2020-04-30

System and method for detecting deterioration of a control valve

#74
20200088206
2020-03-19

Fan locking and disconnection device and related systems

#75
20200037465
2020-01-30

Controller with fan motoring and control

#76
20200003221
2020-01-02

Shaft seal

#77
20190376412
2019-12-12

Method and a system for detecting the angular position of blades of a turbine engine rotor wheel

#78
20190309757
2019-10-10

Apparatus, systems and methods for protecting pumps

#79
20190301476
2019-10-03

Electric air pump system

#80
20190271323
2019-09-05

Method for inflating an inflatable member

#81
20190271322
2019-09-05

Air pump system

#82
20190264700
2019-08-29

DEVICES, SYSTEMS, AND METHODS FOR CONTROLLING A CEILING FAN

#83
20190229536
2019-07-25

Ceiling fan with gesture induction function

#84
20190219061
2019-07-18

Fan failure backup apparatus and method of backing up the same

#85
20190219060
2019-07-18

FAN DEVICE CONTROLLER

#86
20190219059
2019-07-18

Methods and apparatus for controlling fan devices

#87
20190207403
2019-07-04

Power tool

#88
20190191591
2019-06-20

Controller with heat sink clamping plate for enhanced thermal properties

#89
20190136926
2019-05-09

AIRCRAFT BRAKE COOLING FAN CONTROL SYSTEM

#90
20190134247
2019-05-09

FAN WITH AIR FRESHENING DISPENSER

#91
20190131913
2019-05-02

Brushless DC motor

#92
20190128269
2019-05-02

Automatic control systems for frost fans

#93
20190113040
2019-04-18

PNEUMATIC PUMP CONTROL SYSTEM

#94
20190093716
2019-03-28

Integrated fan braking mechanism

#95
20190072099
2019-03-07

Single-knob air pump

#96
20190040868
2019-02-07

HVAC blower protection

#97
20190003382
2019-01-03

Geared turbofan engine with low pressure environmental control system for aircraft

#98
20180368754
2018-12-27

Fan, and control system and method therefor

#99
20180335042
2018-11-22

Multifunctional air pump

#100
20180332727
2018-11-15

Compressor protection module

#101
20180258942
2018-09-13

Method for checking the functions of a plurality of fans

#102
20180231074
2018-08-16

Braking structure for fan

#103
20180228050
2018-08-09

Electronic device having a deformation sensor on a fan module of a fan and using a controller to monitor the deformation sensor and control operation of the fan based on a deformation signal of the sensor

#104
20180209431
2018-07-26

Active stall prevention in centrifugal fans

#105
20180160564
2018-06-07

Method and system for controlling fan rotating speed of LED lamp, and LED lamp thereof

#106
20180132382
2018-05-10

Controller with fan monitoring and control

#107
20180132380
2018-05-10

Controller with enhanced thermal properties

#108
20180080453
2018-03-22

Backpack-type blower

#109
20180073514
2018-03-15

STOPPING ROTATION OF FAILED FANS

#110
20180045206
2018-02-15

PORTABLE INDUSTRIAL AIR FILTRATION DEVICE THAT ELIMINATES FAN-SPEED SENSOR ERROR

#111
20180023584
2018-01-25

Centrifugal compressor and magnetic bearing backup system for centrifugal compressor

#112
20170333965
2017-11-23

Device for discharging exhaust air from the surroundings of a metal strip

#113
20170261961
2017-09-14

Method and apparatus for protecting heat dissipation fan of projecting device

#114
20170218967
2017-08-03

PLURAL-FANS DRIVING APPARATUS

#115
20170179709
2017-06-22

System and method for compressor motor protection

#116
20170167492
2017-06-15

METHOD FOR CONTROLLING AN ELECTRIC VENTILATOR

#117
20170130728
2017-05-11

Air pump control system and method

#118
20170107702
2017-04-20

Pressure boosting device

#119
20170102000
2017-04-13

MOTOR DRIVE DEVICE CAPABLE OF INFORMING MALFUNCTION IN OPERATION OF FAN, AND METHOD THEREOF

#120
20170101999
2017-04-13

Ceiling fan system

#121
20170089346
2017-03-30

Ceiling fan system with brushless motor

#122
20170077863
2017-03-16

System and method for determining a condition of a fluid flow path

#123
20160380559
2016-12-29

Motor system and fan module using the same

#124
20160368346
2016-12-22

Diagnostic function for brushless blower motor

#125
20160356331
2016-12-08

Aircraft brake cooling fan control system

#126
20160319827
2016-11-03

Method for preventing a fan from burning down at activation

#127
20160298637
2016-10-13

Apparatus, systems and methods for protecting pumps

#128
20160258439
2016-09-08

Method for controlling a motor for a fan in a heat exchanger, control apparatus for a fan and heat exchanger

#129
20160222956
2016-08-04

Compressor protection module

#130
20160153455
2016-06-02

ROTATION SPEED CONTROL SYSTEM AND CONTROL METHOD

#131
20160107733
2016-04-21

Electric powered inflation system

#132
20160084254
2016-03-24

Gas lock resolution during operation of an electric submersible pump

#133
20160061207
2016-03-03

Variable Speed Compressor Startup Control

#134
20160053765
2016-02-25

Battery monitoring system

#135
20150360540
2015-12-17

Vehicle-cooling-fan control system and control method therefor

#136
20150337860
2015-11-26

Composite cooling fan

#137
20150333515
2015-11-19

Fan system and voltage stabilizing module for multi power source input

#138
20150267708
2015-09-24

Cooling system for vehicle-mounted power control device and method for diagnosing abnormality in cooling system

#139
20150252809
2015-09-10

External automatic control smart air pump

#140
20150211534
2015-07-30

Battery-operated blower filter system for use in potentially explosive areas

#141
20150198168
2015-07-16

Air pump capable of automatic air supplements

#142
20150192142
2015-07-09

PASSIVE SHUTDOWN SEALING DEVICE FOR A SYSTEM OF SHAFT SEALS IN A REACTOR COOLANT PUMP SET

#143
20150184668
2015-07-02

Air compressor with audible alarm device

#144
20150152876
2015-06-04

Anti-air-return system and method of fan

#145
20150152860
2015-06-04

PUMP CONDITION MONITORING AND RECOVERY

#146
20150147154
2015-05-28

SYSTEM AND METHOD FOR IMPLEMENTING INTRINSIC SAFETY IN ROTATING MACHINE

#147
20150044022
2015-02-12

Method and device for controlling a hot restart of a centrifugal compressor

#148
20150034196
2015-02-05

Portable dunnage bag inflator

#149
20140369813
2014-12-18

Fan motor control unit

#150
20140341751
2014-11-20

Control device for a radiator fan, radiator fan arrangement and method

#151
20140324385
2014-10-30

Device for monitoring the lifetime of the fan bearings

#152
20140314566
2014-10-23

Electronic device, and control device and method for controlling fan employed in the electronic device

#153
20140308128
2014-10-16

Fan system

#154
20140205430
2014-07-24

HEAT-DISSIPATION SYSTEM FOR PREVENTING INRUSH CURRENT

#155
20140193248
2014-07-10

Locking device for cooling fan assembly

#156
20140112809
2014-04-24

Protection structure of motor for cooling-fan

#157
20140097770
2014-04-10

Motor driving apparatus with rotational speed limitation function and fan apparatus with rotational speed limitation function

#158
20140045599
2014-02-13

Mechanical protection device

#159
20140022071
2014-01-23

Fire control systems

#160
20130336762
2013-12-19

Bolt-fastening system for turbomolecular pump, and a pump containing the same

#161
20130328421
2013-12-12

Apparatus for oscillation-decoupled mounting of an electric motor, in particular a blower motor

#162
20130272685
2013-10-17

Heating apparatus

#163
20130230410
2013-09-05

Air pump having an auto-stop control device

#164
20130162435
2013-06-27

ALARM SYSTEM AND METHOD FOR FANS

#165
20130156576
2013-06-20

Method and apparatus for monitoring electromechanical device performance and reliability

#166
20130142634
2013-06-06

Method for mounting shielding on a turbine casing, and mounting assembly for implementing same

#167
20130084185
2013-04-04

Fan brake

#168
20130045103
2013-02-21

Ceiling fan with suspension detection

#169
20130037250
2013-02-14

Intelligent air moving apparatus

#170
20130017097
2013-01-17

ALARM CIRCUIT

#171
20120301276
2012-11-29

Wear pin gap closure detection system for gas turbine engine

#172
20120288375
2012-11-15

Fan control system

#173
20120286601
2012-11-15

Pressure-resistant explosion-proof connector

#174
20120274259
2012-11-01

Alerting apparatus for fan failure and method for the same

#175
20120269617
2012-10-25

Cooling fan

#176
20120266659
2012-10-25

Leak detector and process control therefor

#177
20120137759
2012-06-07

Surge precursor protection systems and methods

#178
20120093662
2012-04-19

Auto-stop air pump

#179
20120039717
2012-02-16

Ceiling fan

#180
20120027623
2012-02-02

Method and device for controlling a hot restart of a centrifugal compressor

#181
20120012275
2012-01-19

INTELLIGENT AIR MOVER APPARATUS

#182
20110318194
2011-12-29

Pump with automatic deactivation mechanism

#183
20110248586
2011-10-13

Implementation of a non-metallic barrier in an electric motor

#184
20110229354
2011-09-22

Fan comprising anti-deflagration housing

#185
20110176910
2011-07-21

Turbomolecular Pump with a Flexible Mount

#186
20110064575
2011-03-17

Ceiling sweep fan

#187
20100244759
2010-09-30

Safety features for moving components of electronic devices

#188
20100243218
2010-09-30

Heat-dissipating fan

#189
20100229626
2010-09-16

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

#190
20100150736
2010-06-17

Fan system having improved availability and method for its operation

#191
20100129225
2010-05-27

Ceiling fan

#192
20100086412
2010-04-08

BLOWER

#193
20100034651
2010-02-11

Ceiling fans with low solidity ratio

#194
20090257872
2009-10-15

Reduced-impedance cooling system with variable pitch blade and hot-swappable spare

#195
20090215380
2009-08-27

Fan module for failure backup

#196
20090208333
2009-08-20

Ceiling fan system with brushless motor

#197
20090113661
2009-05-07

Hand-held powered suction device

#198
20090089935
2009-04-09

Pressure switch applicable for an inflatable body

#199
20090009038
2009-01-08

Fan with failure detecting function

#200
20080310967
2008-12-18

INTELLIGENT AIR MOVING APPARATUS

#201
20080304985
2008-12-11

Turbo-molecular pump

#202
20080298952
2008-12-04

Fan with an arrangement of detecting degradation of the bearings

#203
20080286117
2008-11-20

Pump with automatic deactivation mechanism

#204
20080276416
2008-11-13

TUBE BARRIER

#205
20080226442
2008-09-18

FAN WITH MEANS FOR MONITORING WEAR

#206
20080219846
2008-09-11

Apparatus for hydraulically adjusting the blades of an impeller of an axial-flow fan

#207
20080159882
2008-07-03

Motor-fan unit with thermal device

#208
20080087342
2008-04-17

Air pump device and its inflatable product

#209
20080075579
2008-03-27

Fan device

#210
20080036403
2008-02-14

Fan control system

#211
20070258805
2007-11-08

Fan systems

#212
20070253806
2007-11-01

Electric Fan

#213
20070224030
2007-09-27

Fan system with hysteresis character and method thereof

#214
20070166158
2007-07-19

Reverse rotation prevention device

#215
20070160481
2007-07-12

Control scheme for a roof vent fan assembly

#216
20070147983
2007-06-28

Vortex-flow blower device

#217
20070145920
2007-06-28

Fan system and speed detecting device thereof

#218
20070116577
2007-05-24

Fan system and seriate starting module and delayed starting unit thereof

#219
20070116553
2007-05-24

Fan system and temperature-sensing protecting device thereof

#220
20070104575
2007-05-10

TOUCH CONTROL SYSTEM FOR A FAN

#221
20070081888
2007-04-12

Series fans with flow modification element

#222
20060291964
2006-12-28

Pressure switch applicable for an inflatable body

#223
20060261761
2006-11-23

Fan control system

#224
20060199521
2006-09-07

Fan having function for detecting fault in the fan

#225
20060185114
2006-08-24

Vacuum device/blower

#226
20060165538
2006-07-27

Fan clutch for an electronics cooling fan

#227
20060124424
2006-06-15

Control method of magnet type fan clutch

#228
20060062669
2006-03-23

Blower

#229
20060034713
2006-02-16

Turbo pump and processing apparatus comprising the same

#230
20050254946
2005-11-17

Fan blade for allowing airflow with fan in failure condition

#231
20050230489
2005-10-20

Blower

#232
20050207882
2005-09-22

Air circulating apparatus

#233
20050186071
2005-08-25

Protection mechanism for flow inducing device

#234
20050141997
2005-06-30

Ceiling fan proximity safety apparatus

#235
20050118029
2005-06-02

Apparatus and method for detecting fault of cooling fan

#236
20050095138
2005-05-05

Scalable, modular, high availability fan system

#237
20050093500
2005-05-05

High availability fan system

#238
20050084384
2005-04-21

Smart fan and pump controller

#239
20050058559
2005-03-17

Fan motor

#240
20050047905
2005-03-03

Molecular pump and connecting device

#241
20050046362
2005-03-03

Fan control system

#242
20050039298
2005-02-24

Blower

#243
20050007041
2005-01-13

Complementary fan rotational speed control method and apparatus

#244
18820889
2025-12-09

Compressor temperature protection module and protection system thereof

#245
18624197
2024-07-23

Air pump

#246
18233750
2024-10-08

Wearable air circulation devices and methods of use