ClassID:

217481

H02K21/026 - CPC Classification

Classification description:

Synchronous motors having permanent magnets; Synchronous generators having permanent magnets; Details; Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the thickness of the air gap between field and armature Axial air gap machines

Recent Application in this class:
#1
20250233495
2025-07-17

ELECTRIC AXIAL FLUX MACHINE WITH PRETENSIONED STATOR COMPONENTS, AND ELECTRIC MACHINE ASSEMBLY COMPRISING SUCH AN ELECTRIC AXIAL FLUX MACHINE

#2
20250088085
2025-03-13

Method For Operating An Electric Motor

#3
20240429800
2024-12-26

AXIAL FLUX MOTOR WHICH IS FIXED TO A HOUSING AND HAS AN ADJUSTMENT FUNCTION

#4
20240235351
2024-07-11

ELECTRIC AXIAL FLUX MACHINE

#5
20240178732
2024-05-30

ADJUSTABLE AIR GAP AXIAL FLUX MOTOR

#6
20240136902
2024-04-25

ELECTRIC AXIAL FLUX MACHINE

#7
20240097541
2024-03-21

Motor for a personal care device

#8
20240088765
2024-03-14

AXIAL FLUX MOTOR WITH FIELD WEAKENING FUNCTIONALITY

#9
20230412057
2023-12-21

AXIAL FLUX MOTOR STRUCTURE USING MAGNETIC LEVITATION FORCE AND ROTATIONAL FORCE

#10
20230231455
2023-07-20

ELECTRIC AXIAL FLOW MACHINE AND DISPLACEMENT DEVICE FOR AN ELECTRIC AXIAL FLOW MACHINE

#11
20230231454
2023-07-20

Electric machine, displacement device for an electric machine, and powertrain for a motor vehicle

#12
20230040807
2023-02-09

Rotor support, rotor, motor, and wind turbine

#13
20220385156
2022-12-01

AXIAL FLUX MOTOR WITH VARIABLE GAP

#14
20220263355
2022-08-18

Axial flux motor having rectilinear stator teeth

#15
20220094249
2022-03-24

Axial gap motor, vehicle and axial gap motor system including torque control

#16
20210226557
2021-07-22

Hybrid rotary energy harvester

#17
20210152066
2021-05-20

Motor for a personal care device

#18
20210091646
2021-03-25

Electric machine with an adjustable air gap

#19
20200355159
2020-11-12

Vertical axis wind turbine apparatus and system

#20
20200227990
2020-07-16

Electro-magnetic motor

#21
20200195074
2020-06-18

DC motor-dynamo for bidirectional energy conversion between mechanical and electrical energy

#22
20200052564
2020-02-13

Rotary generators

#23
20190360465
2019-11-28

Vertical axis wind turbine apparatus and system

#24
20190334393
2019-10-31

Stack-type stator using multi-layer substrate, slim motor using same, and blower for air purification system

#25
20190245421
2019-08-08

AIR GAP CONTROL SYSTEMS AND METHODS

#26
20190245405
2019-08-08

Electric machine

#27
20190071874
2019-03-07

Multi-layer gutter cover and gutter assembly comprising the same

#28
20180269760
2018-09-20

Electrical machine

#29
20170256106
2017-09-07

Vehicle and engine generator unit for driving vehicle

#30
20170253233
2017-09-07

Vehicle having a generator with inductance-adjustable windings

#31
20170244349
2017-08-24

Electric power supply system, control device, vehicle, and engine generator unit for driving vehicle

#32
20170244348
2017-08-24

Current supply system, electric power supply system, and control device

#33
20170240053
2017-08-24

Transmission, control device, and vehicle

#34
20170040878
2017-02-09

Air gap control systems and methods

#35
20150380999
2015-12-31

Permanent magnet machine with segmented sleeve for magnets

#36
20150171721
2015-06-18

AIR GAP VARIABLE MOTOR

#37
20140191612
2014-07-10

Electric machine with multiple air gaps and a 3D magnetic flux

#38
20140139069
2014-05-22

Axial flux machine

#39
20140062087
2014-03-06

Ball bearing supported electromagnetic microgenerator

#40
20130285501
2013-10-31

Wind turbine generator with movable stator subunits

#41
20130119802
2013-05-16

Air gap control systems and methods

#42
20120319517
2012-12-20

Efficient and powerful electric motor integrated with a generator

#43
20120262095
2012-10-18

Air gap control systems and methods

#44
20120146445
2012-06-14

Axial Flux Permanent Magnet Brushless Machine

#45
20120019087
2012-01-26

Magnetic Electron Exciter and Methods

#46
20110241348
2011-10-06

Tapered magnetic thrust bearing within an electric generator with adjusting air gap controls

#47
20110133592
2011-06-09

Rotary electrical machine

#48
20110121676
2011-05-26

Vehicle disk motor with movable magnet poles

#49
20110109185
2011-05-12

HIGH EFFICIENCY MAGNETIC CORE ELECTRICAL MACHINE

#50
20100181770
2010-07-22

Method and apparatus for fluid turbine having a linear actuator

#51
20090224625
2009-09-10

Rotary electrical machine

#52
20090212728
2009-08-27

Wheel driving apparatus and electric vehicle including the same

#53
20090206602
2009-08-20

Fluid power generator

#54
20090134723
2009-05-28

Electric motor device

#55
20080265702
2008-10-30

Permanent magnetic brushless motor with length adjustable air gap based on load

#56
20080106162
2008-05-08

ROTARY ELECTRICAL MACHINE AND ELECTRIC VEHICLE HAVING THE SAME

#57
20070216252
2007-09-20

Motor/generator

#58
20070176427
2007-08-02

Alternate current power generator

#59
20060181172
2006-08-17

Rotary electrical machine and electric vehicle having the same

#60
20060152104
2006-07-13

Rotary electrical machine

#61
20060012182
2006-01-19

Wind energy conversion system

#62
20060006658
2006-01-12

Wind energy conversion system

#63
20050082839
2005-04-21

Wind energy conversion system