H02K21/28 - CPC Classification Index

ClassID:

217505 ⎘

H02K21/28 - CPC Classification

Classification description:

Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating armatures and stationary magnets with armatures rotating within the magnets

Sub-classes:

H02K21/30 » having an annular armature core with salient poles 5
H02K21/32 » having a horse-shoe magnet 4
H02K21/34 » having bell-shaped or bar-shaped magnet, e.g. for cycle lighting 2
H02K21/36 » with homopolar co-operation 5

Recent Application in this class:

20250219518

2025-07-03

ELECTRIC GENERATOR WITH REDUCED INPUT POWER

20250023404

2025-01-16

Revived Repulsion (RR) Magnetic Configuration

20240280099

2024-08-22

Sealing In Helical Trochoidal Rotary Machines

20230366326

2023-11-16

METHODS AND APPARATUS TO HEAT ROTOR BLADES

20230336063

2023-10-19

Electric machine

20230098259

2023-03-30

Sealing in helical trochoidal rotary machines

20230054067

2023-02-23

MOTOR

20220407373

2022-12-22

Revived repulsion (RR) magnetic configuration

20220088803

2022-03-24

Generating electric power for a robotic end effector

#10

20210354798

2021-11-18

DRONE FOR TRIGGERING NAVAL MINES, HAVING AN ELECTRIC DRIVE

#11

20210246889

2021-08-12

Electrically driven power end apparatus and methods

#12

20210199011

2021-07-01

Helical trochoidal rotary machines

#13

20210189880

2021-06-24

Helical trochoidal rotary machines with offset

#14

20210025392

2021-01-28

Sealing in helical trochoidal rotary machines

#15

20200309212

2020-10-01

Actuator assembly with integrated housing for electromechanical parking brake

#16

20200200174

2020-06-25

Sealing in helical trochoidal rotary machines

#17

20200200008

2020-06-25

Helical trochoidal rotary machines with offset

#18

20190123626

2019-04-25

Electric motor generator system with a plurality of magnet portions abutting an inwardly facing surface of a shaft

#19

20180358882

2018-12-13

Electric motor

#20

20180145575

2018-05-24

Electrical machine including a magnetic flux weakening apparatus

#21

20180065221

2018-03-08

DC-motor

#22

20130049511

2013-02-28

Permanent magnet embedded rotor

#23

20130026877

2013-01-31

Motor

#24

20120119596

2012-05-17

Electric motor for a small electric device

#25

20120112566

2012-05-10

Small Electrical Appliance And Electric Motor Drive Unit For A Small Electrical Appliance

#26

20120007458

2012-01-12

Electrical machine

#27

20090045687

2009-02-19

Inertia permanent magnet generator unit

#28

20060113796

2006-06-01

Automatic power generation light-image fan device