| ReturnTo Theme-Group-Choice | Onelevelup |
| 5H619 | Synchronous machinery | |
| H02K19/00 -19/38 | ||
| H02K19/00-19/38 | AA | AA00 PURPOSE |
AA01 | AA03 | AA04 | AA05 | AA06 | AA07 | AA08 | AA10 | ||
| . Improvement of magnetic characteristics | . Affixing or securing | . Insulation | . Manufacturing | . . Machining | . . . Pressing | . . . Cutting | . Prevention of vibration | |||||
| AA11 | AA13 | AA14 | ||||||||||
| . Cooling | . Detection, measurement, or protection | . . Detection of breakdowns or abnormalities | ||||||||||
| BB | BB00 FORMS AND TYPES OF SYNCHRONOUS MACHINERY |
BB01 | BB02 | BB03 | BB05 | BB06 | BB08 | BB09 | BB10 | |||
| . Motors | . Generators | . . Generators with which multiple outputs are obtained | . Single-phase machinery | . Multi-phase machinery | . Self-excited machinery | . . Capacitor self-excitation | . Separate excitation | |||||
| BB11 | BB13 | BB15 | BB17 | BB18 | ||||||||
| . Excitation by multiple coils | . Brushless-type variants | . Salient-pole-type variants | . Machinery that has claw pole type rotors | . . Randel-type variants | ||||||||
| BB21 | BB22 | BB24 | BB25 | BB26 | ||||||||
| . Monopole-inductor variants | . Multi-pole-inductor variants | . Reluctance-type variants | . Warren-motors | . Reaction motors | ||||||||
| PP | PP00 SUBJECT PORTIONS OF SYNCHRONOUS MACHINERY |
PP01 | PP02 | PP04 | PP05 | PP06 | PP08 | PP10 | ||||
| . Stators | . Rotors | . Iron ores | . . Teeth | . . Yokes | . Permanent magnets | . Brackets | ||||||
| PP11 | PP12 | PP13 | PP14 | PP15 | PP17 | PP19 | PP20 | |||||
| . Windings or coils | . . Field windings | . . Excitation windings | . . Armature windings | . . Short-circuit windings | . Bobbins | . Brushes | . Slip rings | |||||
| PP21 | PP22 | PP24 | PP25 | PP26 | PP28 | PP30 | ||||||
| . Shafts | . Bearings | . Machinery having internal fans | . . Variants having internal fans integrally formed with rotors | . Variants having external fans | . Fins | . Pulleys | ||||||
| PP31 | PP32 | PP33 | PP34 | PP35 | PP36 | PP38 | ||||||
| . Accessory parts or controllers | . . Diodes | . . Capacitors | . . Resistors | . . Voltage regulators | . . Rotary rectifiers | . Exciters |