ClassID:

144078

F04D19/005 - CPC Classification

Classification description:

Axial-flow pumps; Axial flow fans reversible fans

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

METHODS AND APPARATUS FOR CONTROLLING FAN DEVICES

#2
20250314254
2025-10-09

POWER SUPPLY UNIT WITH CONSOLIDATED DIFFERENT AIRFLOW DIRECTION FANS

#3
20250059984
2025-02-20

CONFIGURABLE BI-DIRECTIONAL AIRFLOW FAN

#4
20250043792
2025-02-06

INFLATABLE PUMP, INFLATABLE ASSEMBLY, AND INFLATABLE PRODUCT

#5
20240102491
2024-03-28

Configurable bi-directional airflow fan

#6
20230323887
2023-10-12

Methods and apparatus for controlling fan devices

#7
20230096473
2023-03-30

Table Fan Device

#8
20220364570
2022-11-17

Reversible fan

#9
20220364567
2022-11-17

Reversible fan

#10
20220316489
2022-10-06

Remote control system for forward/reverse rotation of a fan

#11
20220154722
2022-05-19

FAN APPARATUS

#12
20210293249
2021-09-23

Methods and apparatus for controlling fan devices

#13
20210033099
2021-02-04

Aerodynamic anti-rotation device

#14
20210025401
2021-01-28

WIND DIRECTION CHANGING STRUCTURE OF FAN

#15
20200318645
2020-10-08

Load Bearing Direct Drive Fan System With Variable Process Control

#16
20200232476
2020-07-23

Variable pitch fan pitch limit

#17
20200063745
2020-02-27

Air pump with two fans

#18
20190301493
2019-10-03

Fan systems including brushes and bristles for self-cleaning

#19
20190293075
2019-09-26

Fan apparatus

#20
20190219060
2019-07-18

FAN DEVICE CONTROLLER

#21
20190219059
2019-07-18

Methods and apparatus for controlling fan devices

#22
20190162192
2019-05-30

Blower

#23
20180274549
2018-09-27

Connecting element

#24
20180142619
2018-05-24

Multiple axle-sleeve driving bidirectional rotating wheel-shaped fan turbine and a bushing wheel-shaped fan compressor

#25
20180141092
2018-05-24

Fan or pump arrangement and operating method

#26
20180087440
2018-03-29

Blast fan

#27
20180087439
2018-03-29

Reversible flow fan

#28
20180058463
2018-03-01

Load bearing direct drive fan system with variable process control

#29
20180051711
2018-02-22

Cooling fan assemblies with selectively activated vibration modes

#30
20170342988
2017-11-30

A Fan Drive Assembly

#31
20170276139
2017-09-28

Thrust generating apparatus for controlling attitude of movable body

#32
20170260985
2017-09-14

Blower and a blowing vacuum device

#33
20170254335
2017-09-07

Bearing free axial fan

#34
20170077863
2017-03-16

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

#35
20170030370
2017-02-02

High pitch stall resisting propeller

#36
20170002907
2017-01-05

Drive assembly provided with a continuously variable transmission and a direction reversing mechanism

#37
20160319827
2016-11-03

Method for preventing a fan from burning down at activation

#38
20160312792
2016-10-27

Bidirectional axial fan device

#39
20160290341
2016-10-06

Fan assembly having a rotatingly drive hub

#40
20160238014
2016-08-18

System and method for controlling forward/reverse rotation of fan

#41
20160238010
2016-08-18

Vacuum / blower device

#42
20160222975
2016-08-04

Dual direction windmill pump for geared turbofan engine

#43
20160195097
2016-07-07

Axial blower vacuum

#44
20160178266
2016-06-23

Electronically commutated fan motors and systems

#45
20160178227
2016-06-23

Electronically commutated fan motors and systems

#46
20150275905
2015-10-01

Electric device including an electric fan which generates airflow at a time of low-temperature startup

#47
20140363272
2014-12-11

Serial axial fan

#48
20140314559
2014-10-23

Guide vane and inline fan assembly

#49
20120298055
2012-11-29

Apparatus and method for pumping air for exhaust oxidation in an internal combustion engine

#50
20120262282
2012-10-18

Hanging Fan Control Circuit for Controlling Clockwise/Counterclockwise Rotation Direction and Rotation Speed

#51
20120219399
2012-08-30

Electric device including an electric fan and a control unit for controlling the electric fan

#52
20120213650
2012-08-23

Cooling Fan with Dual Rotation Directions

#53
20120132411
2012-05-31

WIND POWER GENERATING SYSTEM FOR VEHICLE USING MOTOR FOR COOLING FAN

#54
20080253896
2008-10-16

High efficiency fan blades with airflow-directing baffle elements

#55
18937197
2026-02-03

Axial fan rotor for reversible flow

#56
18446388
2024-07-09

Fan lamp and fan lamp controller