ClassID:

217480

H02K21/025 - 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

Sub-classes:
Recent Application in this class:
#1
20240120782
2024-04-11

ELECTRIC MACHINE AND MOTOR VEHICLE

#2
20240022150
2024-01-18

AIRGAP CONTROL IN AN ELECTRIC GENERATOR FOR A WIND TURBINE

#3
20230023710
2023-01-26

SYNCHRONOUS RELUCTANCE MACHINE HAVING A VARIABLE AIR GAP

#4
20220271637
2022-08-25

Low vibration electric motor

#5
20200381986
2020-12-03

PERMANENT MAGNET GENERATOR AND METHODS OF MAKING AND USING THE SAME

#6
20200343779
2020-10-29

Cycloidal electric machine with minimized airgap

#7
20200223646
2020-07-16

Method for operating a transport apparatus in the form of a long stator linear motor

#8
20200195110
2020-06-18

Rotor for an electric machine of a vehicle

#9
20200136484
2020-04-30

ROTATING ELECTRIC MACHINE

#10
20200076253
2020-03-05

Electric motor with switchover elements in the magnetic circuit

#11
20190002214
2019-01-03

Method for operating a transport apparatus in the form of a long stator linear motor

#12
20160344271
2016-11-24

Single Phase Brushless Motor and Electric Apparatus Having the Same

#13
20150171722
2015-06-18

Linear drive unit with a magnetic gap changing mechanism

#14
20140346908
2014-11-27

ELECTRIC MACHINE COMPRISING A DEFORMABLE STATOR

#15
20140183877
2014-07-03

PERMANENT MAGNET GENERATOR

#16
20140035414
2014-02-06

Brake device with built-in power generation mechanism and permanent magnetism eddy current

#17
20130069604
2013-03-21

Permanent magnet generator

#18
20120086293
2012-04-12

Kinetic energy to electric power converter

#19
20100314963
2010-12-16

PERMANENTLY EXCITED ELECTRICAL MACHINE

#20
20080150294
2008-06-26

Centrifugally active variable magnetic flux alternator

#21
20060091752
2006-05-04

Electric motor and electric compressor