H
SECTION H — ELECTRICITY
 H02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
 H02K
DYNAMO-ELECTRIC MACHINES (measuring instruments G01; dynamo-electric relays H01H 53/00; magneto-hydrodynamic machines H02N 4/00; microphones, pick-ups, telephone receivers, loud-speakers or other transmitters or receivers of sound or other mechanical waves H04R)
 H02K

Note(s)

Structural adaptation of the machine for the purposes of its control is in this sub-class, but controlling motors, generators, or converters, in general, is classified in sub-class H02P.

 H02K 1/00
Details of the magnetic circuit (magnetic circuits or magnets in general, magnetic circuits for transformers for power supply H01F; magnetic circuits for relays H 01 H 45/16)
 H02K 1/02
·  characterised by the magnetic material
 H02K 1/04
·  characterised by the material used for insulating the magnetic circuit or parts thereof (insulation of windings H02K 3/30)
 H02K 1/06
·  characterised by the shape, form, or construction
 H02K 1/08
·  ·  Salient poles
 H02K 1/10
·  ·  ·  Commutating poles
 H02K 1/12
·  ·  Stationary parts of the magnetic circuit
 H02K 1/14
·  ·  ·  Stator cores with salient poles
 H02K 1/16
·  ·  ·  Stator cores with slots for windings
 H02K 1/18
·  ·  ·  Means for mounting or fastening magnetic stationary part on to, or to, the stator structure
 H02K 1/20
·  ·  ·  with channels or ducts for flow of cooling medium
 H02K 1/22
·  ·  Rotating parts of magnetic circuit
 H02K 1/24
·  ·  ·  Rotor cores with salient poles
 H02K 1/26
·  ·  ·  Rotor cores with slots for windings
 H02K 1/28
·  ·  ·  Means for mounting or fastening rotating magnetic part on to, or to, the rotor structure
 H02K 1/30
·  ·  ·  ·  using intermediate part or parts, e.g. spider
 H02K 1/32
·  ·  ·  with channels or ducts for flow of cooling medium
 H02K 1/34
·  ·  Reciprocating, oscillating, or vibrating part of magnetic circuit
 H02K 3/00
Details of windings (coils in general H01F 5/00)
 H02K 3/02
·  Windings characterised by the conductor material (conductors in general H01B 1/00, H01B 5/00)
 H02K 3/04
·  Windings characterised by the conductor shape, form, or construction, e.g. with bar conductor
 H02K 3/06
·  ·  Squirrel-cage or other short-circuited windings
 H02K 3/08
·  ·  ·  Double or multiple-cage windings
 H02K 3/10
·  ·  ·  Deep-bar windings
 H02K 3/11
·  ·  ·  ·  Amortisation windings
 H02K 3/12
·  ·  arranged in slots
 H02K 3/14
·  ·  ·  with transposed conductors, e.g. twisted conductor
 H02K 3/16
·  ·  ·  for damping, commutating, or other auxiliary purposes
 H02K 3/18
·  ·  Windings for salient poles
 H02K 3/20
·  ·  ·  for damping, commutating, or other auxiliary purposes
 H02K 3/22
·  ·  consisting of hollow conductors
 H02K 3/24
·  ·  with channels or ducts between the conductors for flow of cooling medium
 H02K 3/26
·  ·  consisting of printed conductors
 H02K 3/28
·  ·  Layouts of windings or of connections between windings
 H02K 3/30
·  Windings characterised by the insulating material (insulating bodies in general H01B 3/00, H01B 17/00)
 H02K 3/32
·  Windings characterised by the shape, form, or construction of the insulation
 H02K 3/34
·  ·  between conductors
 H02K 3/36
·  ·  between conductor and core, e.g. slot insulation
 H02K 3/38
·  ·  around winding heads, equalising connectors, or connections thereto
 H02K 3/40
·  ·  for high voltage, e.g. affording protection against corona
 H02K 3/42
·  Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
 H02K 3/44
·  Protection against moisture or chemical attack; Windings specially adapted for operation in liquid or gas
 H02K 3/46
·  Fastening of windings on stator or rotor structure
 H02K 3/48
·  ·  in slots
 H02K 3/50
·  ·  Fastening of winding heads, equalising connectors, or connections thereto
 H02K 3/52
·  ·  Fastening salient pole windings or connections thereto
 H02K 5/00
Casings; Enclosures; Supports (casings for electric apparatus in general H05K 5/00)
 H02K 5/02
·  Casings or enclosures characterised by the material thereof
 H02K 5/04
·  Casings or enclosures characterised by the shape, form, or construction thereof
 H02K 5/06
·  ·  Cast metal casings
 H02K 5/08
·  ·  Insulating casings
 H02K 5/10
·  ·  affording protection from ingress, e.g. of water, of fingers
 H02K 5/12
·  ·  specially adapted for operating in liquid or gas, e.g. packing of shaft (combined with cooling arrangements H02K 9/00)
 H02K 5/14
·  ·  Means for supporting brushes or brush holders in casings
 H02K 5/16
·  ·  Means for supporting bearings, in casings e.g. insulating support
 H02K 5/18
·  ·  with ribs or fins for improving heat transfer
 H02K 5/20
·  ·  with channels or ducts for flow of cooling medium
 H02K 5/22
·  ·  Other additional parts of casings, e.g. shaped to form connection or terminal box
 H02K 5/24
·  specially adapted for suppression or reduction of noise or vibration
 H02K 5/26
·  Means for adjusting the casing relative to its support
 H02K 7/00
Arrangements for handling mechanical energy structurally associated with the machine
 H02K 7/02
·  Additional mass for increasing inertia, e.g. flywheel
 H02K 7/04
·  Balancing means
 H02K 7/06
·  Means for converting reciprocating into rotary motion or vice versa
 H02K 7/08
·  Structural association with bearings (support in machine casing H02K 5/16)
 H02K 7/10
·  Structural association with clutches, brakes, gears, pulleys, mechanical starters
 H02K 7/102
·  ·  with friction brakes
 H02K 7/104
·  ·  with eddy-current brakes
 H02K 7/106
·  ·  with dynamo-electric brakes
 H02K 7/108
·  ·  with friction clutches
 H02K 7/11
·  ·  with dynamo-electric clutches
 H02K 7/112
·  ·  with friction clutches and brakes
 H02K 7/114
·  ·  with dynamo-electric clutches and brakes
 H02K 7/116
·  ·  with gear-box
 H02K 7/118
·  ·  with starting device
 H02K 7/12
·  ·  with auxiliary limited movement of stator, rotor, or core parts, e.g. rotor axially movable for the purpose of clutching or braking
 H02K 7/14
·  Structural association with mechanical load, e.g. hand-held machine tool, fan (with fan or impeller for cooling the machine H02K 9/06; for suction cleaners A47L)
 H02K 7/16
·  ·  for operation above critical speed of vibration of rotating parts
 H02K 7/18
·  Structural association of electric generator with mechanical driving motor, e.g. turbine (if the driving-motor aspect predominates, see the relevant sub-class of Section F, e.g. F03B 13/00)
 H02K 7/20
·  Structural association with auxiliary dynamo-electric machine, e.g. with electric starter motor, with exciter
 H02K 9/00
Systems for cooling or ventilating (channels or ducts in parts of the magnetic circuit H02K 1/20, H02K 1/32; channels or ducts in or between conductors H02K 3/22, H02K 3/24)
 H02K 9/02
·  by ambient air flowing through the machine
 H02K 9/04
·  ·  having means for generating flow of cooling medium, e.g. having fan
 H02K 9/06
·  ·  ·  with fan or impeller driven by the machine shaft
 H02K 9/08
·  by gaseous cooling medium circulating wholly within the machine casing (H02K 9/10 takes precedence)
 H02K 9/10
·  by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
 H02K 9/12
·  ·  wherein the cooling medium circulates freely within the casing
 H02K 9/14
·  wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
 H02K 9/16
·  ·  wherein the cooling medium circulates through ducts or tubes within the casing
 H02K 9/18
·  ·  wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing
 H02K 9/19
·  for machines with closed casing and with closed-circuit cooling using a liquid cooling medium, e.g. oil
 H02K 9/193
·  ·  with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
 H02K 9/197
·  ·  in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
 H02K 9/20
·  ·  wherein the cooling medium vaporises within the machine casing
 H02K 9/22
·  by solid heat conducting material embedded in, or arranged in contact with, stator or rotor, e.g. heat bridge
 H02K 9/24
·  Protection against failure of cooling arrangements, e.g. due to loss of cooling medium, due to interruption of the circulation of cooling medium (circuit arrangements affording such protection H02H 7/00)
 H02K 9/26
·  Structural association with machine of devices for cleaning or drying cooling medium, e.g. of filter
 H02K 9/28
·  Cooling of commutators, slip-rings, or brushes, e.g. by ventilating (current collectors in general H01R 39/00)
 H02K 11/00
Structural association with measuring or protective devices or electric components, e.g. with resistor, with switch, with suppressor for radio interference
 H02K 13/00
Arrangements for current collection structurally associated with the machine (means for supporting brushes or brush holders in casings H02K 5/14; current collectors or details thereof in general H01R 39/00); Circuit arrangements for improvement of commutation
 H02K 13/02
·  Connections of slip-rings with the winding
 H02K 13/04
·  Connections of commutator segments with the winding
 H02K 13/06
·  ·  Resistive connections between winding and commutator segments, e.g. by high-resistance choke, by transistor
 H02K 13/08
·  ·  Segments formed by extensions of winding
 H02K 13/10
·  Special arrangements of brushes or commutators for the purpose of improving commutation
 H02K 13/12
·  Means for producing an axial reciprocation of the rotor and its associated current collector part, e.g. for polishing commutator surface
 H02K 13/14
·  Circuit arrangements for improvement of commutation, e.g. by use of unidirectionally conductive element
 H02K 15/00
Methods or apparatus specially adapted for manufacturing, assembling, maintaining, or repairing dynamo-electric machines (manufacture of current collectors in general H01R 43/00)
 H02K 15/02
·  stator or rotor bodies
 H02K 15/04
·  windings, prior to mounting into the machine (coil manufacturing in general H 01 F 11/02)
 H02K 15/06
·  Embedding prefabricated windings in the machine
 H02K 15/08
·  Forming windings by laying conductors into or around core part
 H02K 15/085
·  ·  by laying conductors into slotted stators
 H02K 15/09
·  ·  by laying conductors into slotted rotors
 H02K 15/095
·  ·  by laying conductors around salient poles
 H02K 15/10
·  Applying solid insulation to the stator, or the rotor
 H02K 15/12
·  Impregnating, heating or drying of windings, stators, rotors, or machines
 H02K 15/14
·  Casings; Enclosures; Supports
 H02K 15/16
·  Centering the rotor within the stator; Balancing the rotor (balancing per se G01M)
 H02K 17/00
Asynchronous induction motors; Asynchronous induction generators
 H02K 17/02
·  Asynchronous induction motors
 H02K 17/04
·  ·  for single phase current
 H02K 17/06
·  ·  ·  having windings arranged for permitting pole-changing
 H02K 17/08
·  ·  ·  Motors with auxiliary phase obtained by externally fed auxiliary winding, e.g. capacitor motor
 H02K 17/10
·  ·  ·  Motors with auxiliary phase obtained by split-pole carrying short-circuited winding
 H02K 17/12
·  ·  for multi-phase current
 H02K 17/14
·  ·  ·  having windings arranged for permitting pole-changing
 H02K 17/16
·  ·  having rotor with internally short-circuited windings, e.g. cage rotor
 H02K 17/18
·  ·  ·  having double- or multiple-cage rotor
 H02K 17/20
·  ·  ·  having deep-bar rotor
 H02K 17/22
·  ·  having rotor with windings connected to slip-rings
 H02K 17/24
·  ·  ·  in which both stator and rotor are fed with ac
 H02K 17/26
·  ·  having rotor or stator designed to permit synchronous operation
 H02K 17/28
·  ·  having compensating winding for improving phase angle
 H02K 17/30
·  ·  Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the motor, e.g. with impedance, with switch (control arrangements external to the motor H02P)
 H02K 17/32
·  ·  Structural association with auxiliary mechanical devices, e.g. clutch, brake (control arrangements external to the motor H02P)
 H02K 17/34
·  ·  Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter (control of cascade arrangements H02P)
 H02K 17/36
·  ·  ·  with another asynchronous induction motor
 H02K 17/38
·  ·  ·  with a commutator machine
 H02K 17/40
·  ·  ·  with a rotary ac/dc converter (cascade ac/dc converters H02K 47/06)
 H02K 17/42
·  Asynchronous induction generators
 H02K 17/44
·  ·  Structural association with exciting machine
 H02K 19/00
Synchronous motors or generators (having permanent magnet H02K 21/00)
 H02K 19/02
·  Synchronous motors
 H02K 19/04
·  ·  for single-phase current
 H02K 19/06
·  ·  ·  Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motor
 H02K 19/08
·  ·  ·  Motors having windings on the stator and a smooth rotor of material with large hysteresis without windings, e.g. hysteresis motor
 H02K 19/10
·  ·  for multi-phase current
 H02K 19/12
·  ·  ·  characterised by the arrangement of exciting windings, e.g. for self-excitation, for compounding, for pole-changing
 H02K 19/14
·  ·  having additional short-circuited winding for starting as an asynchronous motor
 H02K 19/16
·  Synchronous generators
 H02K 19/18
·  ·  having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar generator
 H02K 19/20
·  ·  ·  with variable-reluctance soft-iron rotor without winding
 H02K 19/22
·  ·  having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generator
 H02K 19/24
·  ·  ·  with variable-reluctance soft-iron rotor without winding
 H02K 19/26
·  ·  characterised by the arrangement of exciting winding
 H02K 19/28
·  ·  ·  for self-excitation
 H02K 19/30
·  ·  ·  for compounding
 H02K 19/32
·  ·  ·  for pole-changing
 H02K 19/34
·  ·  Generators with two or more outputs
 H02K 19/36
·  ·  Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the generator, e.g. with impedance, with switch (control arrangements external to the generator H02P)
 H02K 19/38
·  ·  Structural association with exciting machine
 H02K 21/00
Synchronous motors having permanent magnet; Synchronous generators having permanent magnet
 H02K 21/02
·  Details
 H02K 21/04
·  ·  Windings on magnet for additional excitation
 H02K 21/06
·  ·  Magnets
 H02K 21/08
·  ·  ·  Rotating magnets
 H02K 21/10
·  ·  Rotating armatures
 H02K 21/12
·  with stationary armature and rotating magnet
 H02K 21/14
·  ·  Magnet rotating within armature
 H02K 21/16
·  ·  ·  having an annular armature core with salient poles (with homopolar co-operation H02K 21/20)
 H02K 21/18
·  ·  ·  having horse-shoe armature core (with homopolar co-operation H02K 21/20)
 H02K 21/20
·  ·  ·  having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar machine
 H02K 21/22
·  ·  magnet rotating around armature, e.g. flywheel magneto
 H02K 21/24
·  ·  magnet axially facing armature, e.g. hub-type cycle dynamo
 H02K 21/26
·  with rotating armature and stationary magnet
 H02K 21/28
·  ·  armature rotating within magnet
 H02K 21/30
·  ·  ·  having an annular armature core with salient poles (with homopolar co-operation H02K 21/36)
 H02K 21/32
·  ·  ·  having a horse-shoe magnet (with homopolar co-operation H02K 21/36)
 H02K 21/34
·  ·  ·  having bell-shaped or bar-shaped magnet, e.g. for cycle lighting (with homopolar co-operation H02K 21/36)
 H02K 21/36
·  ·  ·  with homopolar co-operation
 H02K 21/38
·  with rotating flux distributor, and armature and magnet both stationary
 H02K 21/40
·  ·  Flux distributor rotating around magnet and within armature
 H02K 21/42
·  ·  Flux distributor rotating around armature and within magnet
 H02K 21/44
·  ·  Armature windings wound upon magnet
 H02K 21/46
·  Motors having additional short-circuited winding for starting as an asynchronous motor
 H02K 21/48
·  Generators with two or more outputs
 H02K 23/00
Dc commutator motors or generators having mechanical commutator; Universal ac/dc commutator motors
 H02K 23/02
·  characterised by the exciting arrangement
 H02K 23/04
·  ·  having permanent magnet excitation
 H02K 23/06
·  ·  having shunt connection of excitation windings
 H02K 23/08
·  ·  having series connection of excitation windings
 H02K 23/10
·  ·  having compound connection of excitation windings
 H02K 23/12
·  ·  having excitation produced by a current source independent of the armature circuit
 H02K 23/14
·  ·  having high-speed excitation or de-excitation, e.g. by neutralising the remanent excitation field
 H02K 23/16
·  ·  having angularly adjustable excitation field, e.g. by pole reversing, by pole switching
 H02K 23/18
·  ·  having displaceable main or auxiliary brushes
 H02K 23/20
·  ·  having additional brushes spaced intermediately of the main brushes on the commutator, e.g. cross-field machine, metadyne, amplidyne, other armature-reaction excited machine
 H02K 23/22
·  ·  having compensating or damping winding
 H02K 23/24
·  ·  having commutating-pole winding
 H02K 23/26
·  characterised by the armature winding
 H02K 23/28
·  ·  having open winding, i.e. not closed within armature
 H02K 23/30
·  ·  having lap winding; having loop winding
 H02K 23/32
·  ·  having wave winding; having undulating winding
 H02K 23/34
·  ·  having mixed windings
 H02K 23/36
·  ·  having more than one winding; having more than one commutator; having more than one stator
 H02K 23/38
·  ·  having winding or connection for improving commutation, e.g. equipotential connection
 H02K 23/40
·  characterised by the arrangement of the magnet circuit
 H02K 23/42
·  ·  having split poles, i.e. zones for varying reluctance by gaps in poles or by poles with different spacing of the air gap
 H02K 23/44
·  ·  having movable or turnable iron parts
 H02K 23/46
·  ·  having stationary shunts, i.e. magnetic cross flux
 H02K 23/48
·  ·  having adjustable armature
 H02K 23/50
·  Generators with two or more outputs
 H02K 23/52
·  Motors acting also as generators, e.g. starting motor used as generator for ignition or lighting
 H02K 23/54
·  Disc armature motors or generators
 H02K 23/56
·  Motors or generators having the iron core separated from armature winding
 H02K 23/58
·  Motors or generators having no iron core
 H02K 23/60
·  Motors or generators having a rotating armature and a rotating excitation field
 H02K 23/62
·  Motors or generators with stationary armature and rotating excitation field
 H02K 23/64
·  Motors specially adapted for running on dc or ac by choice
 H02K 23/66
·  Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedance, with switch (control arrangements external to the machine H02P)
 H02K 23/68
·  Structural association with auxiliary mechanical devices, e.g. with clutch, with brake (control arrangements external to the machine H02P)
 H02K 24/00
Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
 H02K 25/00
Dc interrupter motors or generators
 H02K 26/00
Machines adapted to function as torque motors, i.e. to exert a torque when stalled
 H02K 27/00
Ac commutator motors or generators having mechanical commutator (universal ac/dc motors H02K 23/64)
 H02K 27/02
·  characterised by the armature winding
 H02K 27/04
·  having single-phase operation in series or shunt connection
 H02K 27/06
·  ·  with a single or multiple short-circuited commutator, e.g. repulsion motor
 H02K 27/08
·  ·  with multiple-fed armature
 H02K 27/10
·  ·  with switching devices for different modes of operation, e.g. repulsion-induction motor
 H02K 27/12
·  having multi-phase operation
 H02K 27/14
·  ·  in series connection
 H02K 27/16
·  ·  in shunt connection with stator feeding
 H02K 27/18
·  ·  in shunt connection with rotor feeding
 H02K 27/20
·  Structural association with a speed regulating device
 H02K 27/22
·  having means for improving commutation, e.g. auxiliary fields, double windings, double brushes
 H02K 27/24
·  having two or more commutators
 H02K 27/26
·  having disc armature
 H02K 27/28
·  Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine (control arrangements external to the machine H02P)
 H02K 27/30
·  Structural association with auxiliary mechanical devices, e.g. clutch, brake (control arrangements external to the machine H02P)
 H02K 29/00
Commutator motors or generators having non-mechanical commutating devices, e.g. discharge tube, semiconductor device
 H02K 29/02
·  Dc motors or generators
 H02K 29/04
·  Ac motors
 H02K 31/00
Acyclic motors or generators, i.e. dc machines having a drum or disc armature with continuous current collectors
 H02K 31/02
·  with solid-contact collectors
 H02K 31/04
·  with at least one liquid-contact collector
 H02K 33/00
Motors with reciprocating, oscillating, or vibrating magnet, armature, or coil system
 H02K 33/02
·  with armature moved one way by energisation of a single coil system and returned by mechanical force, e.g. by spring
 H02K 33/04
·  ·  wherein the frequency of operation is determined by the frequency of uninterrupted ac energisation
 H02K 33/06
·  ·  ·  with polarised armature
 H02K 33/08
·  ·  ·  with dc energisation superimposed on ac energisation
 H02K 33/10
·  ·  wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armature
 H02K 33/12
·  with armature moving in alternate directions by alternate energisation of two coil systems
 H02K 33/14
·  ·  wherein the alternate energisation and de-energisation of the two coil systems are effected or controlled by movement of the armature
 H02K 33/16
·  with polarised armature moving in alternate directions by reversal or energisation of a single coil system
 H02K 33/18
·  with coil system moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnet
 H02K 35/00
Generators with reciprocating, oscillating, or vibrating coil system, magnet, armature, or other part of the magnetic circuit
 H02K 35/02
·  with moving magnet and stationary coil system
 H02K 35/04
·  with moving coil system and stationary magnet
 H02K 35/06
·  with moving flux distributor, and both coil system and magnet stationary
 H02K 37/00
Motors with armature rotating step by step and without interrupter or commutator driven by the armature
 H02K 39/00
Generators specially adapted for producing a desired non-sinusoidal waveform
 H02K 41/00
Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
 H02K 41/02
·  Linear motors
 H02K 41/04
·  Motors of travelling-wave type
 H02K 41/06
·  Rolling motors, i.e. having the rotor axis parallel to the stator axis and following a circular path as the rotor rolls around the inside or outside of the stator
 H02K 45/00
Machines in which the dynamo-electric interaction between a flow of fluid-borne magnetic particles and a coil system converts energy of mass flow into electrical energy or vice versa
 H02K 47/00
Dynamo-electric converters
 H02K 47/02
·  Ac/dc converters or vice versa
 H02K 47/04
·  ·  Motor/generators
 H02K 47/06
·  ·  Cascade converters
 H02K 47/08
·  ·  Single-armature converters
 H02K 47/10
·  ·  ·  with booster machine on the ac side
 H02K 47/12
·  Dc/dc converters
 H02K 47/14
·  ·  Motor/generators
 H02K 47/16
·  ·  Single-armature converters, e.g. metadyne
 H02K 47/18
·  Ac/ac converters
 H02K 47/20
·  ·  Motor/generators
 H02K 47/22
·  ·  Single-armature frequency converters with or without phase-number conversion
 H02K 47/24
·  ·  ·  having windings for different numbers of poles
 H02K 47/26
·  ·  ·  operating as under- or over-synchronously running asynchronous induction machines, e.g. cascade arrangement of asynchronous and synchronous machines
 H02K 47/28
·  ·  ·  operating as commutator machines with added slip-rings
 H02K 47/30
·  ·  Single-armature phase-number converters without frequency conversion
 H02K 49/00
Dynamo-electric clutches; Dynamo-electric brakes (electrically or magnetically actuated clutches or brakes F16D 27/00, F16D 29/00, F16D 65/34, F16D 65/36; magnetic-particle clutches F16D 37/02; adapted for use as dynamometers G01L)
 H02K 49/02
·  Asynchronous induction type
 H02K 49/04
·  ·  Eddy-current hysteresis type
 H02K 49/06
·  Synchronous type
 H02K 49/08
·  Collector armature type
 H02K 49/10
·  Permanent-magnet type
 H02K 49/12
·  Acyclic type
 H02K 51/00
Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
 H02K 53/00
Alleged dynamo-electric perpetua mobilia