|  | H |
SECTION H — ELECTRICITY

|  | H |
Note(s) These Notes cover the basic principles and general instructions for use of section H. Section H covers: basic electric elements, which cover all electric units and the general mechanical structure of apparatus and circuits, including the assembly of various basic elements into what are called printed circuits and also cover to a certain extent the manufacture of these elements (when not covered elsewhere); generation of electricity, which covers the generation, conversion and distribution of electricity together with the controlling of the corresponding gear; applied electricity, which covers: general utilisation techniques, viz. those of electric heating and electric lighting circuits; some special utilisation techniques, either electric or electronic in the strict sense, which are not covered by other sections of the Classification, including: electric light sources, including lasers; electric X-ray technique; electric plasma technique and the generation and acceleration of electrically charged particles or neutrons; basic electronic circuits and their control; radio or electric communication technique; the use of a specified material for the manufacture of the article or element described. In this connection, paragraphs 57 to 59 of the Guide should be referred to. In this section, the following general rules apply: Subject to the exceptions stated in I(c), above, any electric aspect or part peculiar to a particular operation, process, apparatus, object or article, classified in one of the sections of the Classification other than section H, is always classified in the subclass for that operation, process, apparatus, object or article. Where common characteristics concerning technical subjects of similar nature have been brought out at class level, the electric aspect or part is classified, in conjunction with the operation, process, apparatus, object or article, in a subclass which covers entirely the general electrical applications for the technical subject in question; The electrical applications referred to under (a), above, either general or particular, include: the therapeutic processes and apparatus, in class Fulltext... Hierarchy... Expanded...A61; the electric processes and apparatus used in various laboratory or industrial operations, in classes Fulltext... Hierarchy... Expanded...B01 and Fulltext... Hierarchy... Expanded...B03 and in subclass Fulltext... Hierarchy... Expanded...B23K; the electricity supply, electric propulsion and electric lighting of vehicles in general and of particular vehicles, in the subsection "Transporting" of section B; the electric ignition systems of internal-combustion engines, in subclass Fulltext... Hierarchy... Expanded...F02P, and of combustion apparatus in general, in subclass Fulltext... Hierarchy... Expanded...F23Q; the whole electrical part of section G, i.e. measuring devices including apparatus for measuring electric variables, checking, signalling and calculating. Electricity in that section is generally dealt with as a means and not as an end in itself; All electrical applications, both general and particular, presuppose that the "basic electricity" aspect appears in section H (see I(a), above) as regards the electric "basic elements" which they comprise. This rule is also valid for applied electricity, referred to in I(c), above, which appears in section H itself. In this section, the following special cases occur: Among the general applications covered by sections other than section H, it is worth noting that electric heating in general is covered by subclasses Fulltext... Hierarchy... Expanded...F24D or Fulltext... Hierarchy... Expanded...F24H or class Fulltext... Hierarchy... Expanded...F27, and that electric lighting in general is partly covered by class Fulltext... Hierarchy... Expanded...F21, since in section H (see I(c), above) there are places in Fulltext... Hierarchy... Expanded...H05B which cover the same technical subjects; In the two cases referred to under (a), above, the subclasses of section F, which deal with the respective subjects, essentially cover in the first place the whole mechanical aspect of the apparatus or devices, whereas the electrical aspect, as such, is covered by subclass Fulltext... Hierarchy... Expanded...H05B; In the case of lighting, this mechanical aspect should be taken to cover the material arrangement of the various electric elements, i.e., their geometrical or physical position in relation to one another; this aspect is covered by subclass Fulltext... Hierarchy... Expanded...F21V, the elements themselves and the primary circuits remaining in section H. The same applies to electric light sources, when combined with light sources of a different kind. These are covered by subclass Fulltext... Hierarchy... Expanded...H05B, whereas the physical arrangement which their combination constitutes is covered by the various subclasses of class Fulltext... Hierarchy... Expanded...F21; As regards heating, not only the electric elements and circuitry designs, as such, are covered by subclass Fulltext... Hierarchy... Expanded...H05B, but also the electric aspects of their arrangement, where these concern cases of general application; electric furnaces being considered as such. The physical disposition of the electric elements in furnaces is covered by section F. If a comparison is made with electric welding circuits, which are covered by subclass Fulltext... Hierarchy... Expanded...B23K in connection with welding, it can be seen that electric heating is not covered by the general rule stated in II, above.

|  | H02 |
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

|  | H02K |
DYNAMO-ELECTRIC MACHINES (measuring instruments Fulltext... Hierarchy... Expanded...G01; dynamo-electric relays Fulltext... Hierarchy... Expanded...H01H 53/00; conversion of dc or ac input power into surge output power Fulltext... Hierarchy... Expanded...H02M 9/00; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers Fulltext... Hierarchy... Expanded...H04R)

|  | H02K |
Note(s) This subclass covers the structural adaptation of the machines for the purposes of their control. This subclass does not cover starting, regulating, electronically commutating, braking, or otherwise controlling motors, generators or dynamo-electric converters, in general, which are covered by subclass Fulltext... Hierarchy... Expanded...H02P.

|  | H02K |
Subclass index
GENERATORS OR MOTORS |
Continuously rotating |
ac machines: asynchronous; synchronous; with mechanical commutator | 17/00; 19/00, 21/00; 27/00
dc machines or universal ac/dc motors: with mechanical commutator; with interrupter | 23/00; 25/00
with non-mechanical commutating devices | 29/00
Acyclic machines; oscillating machines; motors rotating step by step | 31/00; 33/00, 35/00; 37/00
Generators producing a non-sinusoidal waveform | 39/00
Machines with more than one rotor or stator | 16/00
SPECIAL DYNAMO-ELECTRIC APPARATUS |
Machines for transmitting angular displacements; torque motors | 24/00; 26/00
Machines involving dynamo-electric interaction with a plasma or a flow of conductive liquid or of fluid-borne conductive or magnetic particles | 44/00
Systems for propulsing a rigid body along a path | 41/00
Converters | 47/00
Dynamo-electric clutches or brakes; dynamo-electric gears | 49/00; 51/00
Alleged perpetua mobilia | 53/00
Machines operating at cryogenic temperatures | 55/00
Machines not otherwise provided for | 57/00
DETAILS |
Magnetic circuits; windings; casings | 1/00; 3/00; 5/00
Arrangements structurally associated with the machine for handling mechanical energy; cooling; measuring or protective devices; current collection or commutation | 7/00; 9/00; 11/00; 13/00
MANUFACTURE | 15/00

|  | H02K 1/00 |
Details of the magnetic circuit (magnetic circuits or magnets in general, magnetic circuits for transformers for power supply Fulltext... Hierarchy... Expanded...H01F; magnetic circuits for relays Fulltext... Hierarchy... Expanded...H01H 50/16)

|  | 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 Fulltext... Hierarchy... Expanded...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 1/17 |
· · · | Stator cores with permanent magnets [5]

|  | H02K 1/18 |
· · · | Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

|  | 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 1/27 |
· · · | Rotor cores with permanent magnets [5]

|  | H02K 1/28 |
· · · | Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

|  | 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 Fulltext... Hierarchy... Expanded...H01F 5/00)

|  | H02K 3/02 |
· | Windings characterised by the conductor material (conductors in general Fulltext... Hierarchy... Expanded...H01B 1/00, Fulltext... Hierarchy... Expanded...H01B 5/00)

|  | H02K 3/04 |
· | Windings characterised by the conductor shape, form, or construction, e.g. with bar conductor

|  | 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 |
· · | Layout of windings or of connections between windings (windings for pole-changing Fulltext... Hierarchy... Expanded...H02K 17/06, Fulltext... Hierarchy... Expanded...H02K 17/14, Fulltext... Hierarchy... Expanded...H02K 19/12, Fulltext... Hierarchy... Expanded...H02K 19/32)

|  | H02K 3/30 |
· | Windings characterised by the insulating material (insulating bodies in general Fulltext... Hierarchy... Expanded...H01B 3/00, Fulltext... Hierarchy... Expanded...H01B 17/00)

|  | H02K 3/32 |
· | Windings characterised by the shape, form, or construction of the insulation

|  | H02K 3/34 |
· · | between conductors or between conductor and core, e.g. slot insulation [3]

|  | 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 [2]

|  | 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 3/47 |
· · | Air-gap windings, i.e. iron-free windings [3]

|  | H02K 3/48 |
· · | in slots

|  | H02K 3/487 |
· · · | Slot-closing devices [3]

|  | H02K 3/493 |
· · · · | where the devices are magnetic [3]

|  | H02K 3/50 |
· · | Fastening of winding heads, equalising connectors, or connections thereto

|  | H02K 3/51 |
· · · | applicable to rotors only [3]

|  | H02K 3/52 |
· · | Fastening salient pole windings or connections thereto

|  | H02K 5/00 |
Casings; Enclosures; Supports (casings for electric apparatus in general Fulltext... Hierarchy... Expanded...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 (combined with cooling arrangements Fulltext... Hierarchy... Expanded...H02K 9/00)

|  | H02K 5/124 |
· · · | Sealing of the shaft [3]

|  | H02K 5/128 |
· · · | using air-gap sleeve or air-gap disc [3]

|  | H02K 5/132 |
· · · | Submersible electric motor (Fulltext... Hierarchy... Expanded...H02K 5/128 takes precedence; pumping installations or systems for submerged use Fulltext... Hierarchy... Expanded...F04D 13/08) [3]

|  | H02K 5/136 |
· · · | explosion-proof [3]

|  | H02K 5/14 |
· · | Means for supporting or protecting brushes or brush holders [3]

|  | H02K 5/15 |
· · | Mounting arrangements for bearing-shields or end plates [3]

|  | H02K 5/16 |
· · | Means for supporting bearings, e.g. insulating support, means for fitting the bearing in the bearing-shield (magnetic bearings Fulltext... Hierarchy... Expanded...H02K 7/09)

|  | H02K 5/167 |
· · · | using sliding-contact or spherical cap bearings [3]

|  | H02K 5/173 |
· · · | using ball bearings or bearings with rolling contact [3]

|  | 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, e.g. structural association with mechanical driving motor or auxiliary dynamo-electric 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 7/065 |
· · | Electromechanical oscillators; Vibrating magnetic drives (in time-pieces Fulltext... Hierarchy... Expanded...G04C 5/00) [3]

|  | H02K 7/07 |
· · | using pawl and ratchet wheel [3]

|  | H02K 7/075 |
· · | using crankshaft or eccentric [3]

|  | H02K 7/08 |
· | Structural association with bearings (support in machine casing Fulltext... Hierarchy... Expanded...H02K 5/16)

|  | H02K 7/09 |
· · | with magnetic bearings [3]

|  | 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 gears

|  | 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 Fulltext... Hierarchy... Expanded...H02K 9/06; for suction cleaners Fulltext... Hierarchy... Expanded...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 place of section F, e.g. Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H02K 1/20, Fulltext... Hierarchy... Expanded...H02K 1/32; channels or ducts in or between conductors Fulltext... Hierarchy... Expanded...H02K 3/22, Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 11/02 |
· | for suppression of radio interference [6]

|  | H02K 11/04 |
· | for rectification [6]

|  | H02K 13/00 |
Structural associations of current collectors with motors or generators, e.g. brush mounting plates, connections to windings (supporting or protecting brushes or brush holders in motor casings or enclosures Fulltext... Hierarchy... Expanded...H02K 5/14); Disposition of current collectors in motors or generators; Arrangements for improving 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 Fulltext... Hierarchy... Expanded...H01R 43/00)

|  | H02K 15/02 |
· | of stator or rotor bodies

|  | H02K 15/03 |
· · | having permanent magnets [5]

|  | H02K 15/04 |
· | of windings, prior to mounting into the machine (insulating windings Fulltext... Hierarchy... Expanded...H02K 15/10, Fulltext... Hierarchy... Expanded...H02K 15/12; coil manufacture in general Fulltext... Hierarchy... Expanded...H01F 41/02)

|  | 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 windings, 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 in general Fulltext... Hierarchy... Expanded...G01M)

|  | H02K 16/00 |
Machines with more than one rotor or stator [2]

|  | H02K 16/02 |
· | Machines with one stator and two rotors [2]

|  | H02K 16/04 |
· | Machines with one rotor and two stators [2]

|  | H02K 17/00 - H02K 53/00 |
Note(s) Group Fulltext... Hierarchy... Expanded...H02K 16/00 takes precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...H02K 17/00-H02K 53/00. [2]

|  | 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 Fulltext... Hierarchy... Expanded...H02P)

|  | H02K 17/32 |
· · | Structural association with auxiliary mechanical devices, e.g. clutch, brake (control arrangements external to the motor Fulltext... Hierarchy... Expanded...H02P)

|  | H02K 17/34 |
· · | Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter (control of cascade arrangements Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H02K 47/06)

|  | H02K 17/42 |
· | Asynchronous induction generators (Fulltext... Hierarchy... Expanded...H02K 17/02 takes precedence) [4]

|  | H02K 17/44 |
· · | Structural association with exciting machine

|  | H02K 19/00 |
Synchronous motors or generators (having permanent magnet Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H02P)

|  | H02K 19/38 |
· · | Structural association with exciting machine

|  | H02K 21/00 |
Synchronous motors having permanent magnet; Synchronous generators having permanent magnet (stator cores with permanent magnets Fulltext... Hierarchy... Expanded...H02K 1/17; rotor cores with permanent magnets Fulltext... Hierarchy... Expanded...H02K 1/27)

|  | H02K 21/02 |
· | Details

|  | H02K 21/04 |
· · | Windings on magnet for additional excitation

|  | 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 Fulltext... Hierarchy... Expanded...H02K 21/20)

|  | H02K 21/18 |
· · · | having horse-shoe armature core (with homopolar co-operation Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H02K 21/36)

|  | H02K 21/32 |
· · · | having a horse-shoe magnet (with homopolar co-operation Fulltext... Hierarchy... Expanded...H02K 21/36)

|  | H02K 21/34 |
· · · | having bell-shaped or bar-shaped magnet, e.g. for cycle lighting (with homopolar co-operation Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H02P)

|  | H02K 23/68 |
· | Structural association with auxiliary mechanical devices, e.g. with clutch, with brake (control arrangements external to the machine Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H02P)

|  | H02K 27/30 |
· | Structural association with auxiliary mechanical devices, e.g. clutch, brake (control arrangements external to the machine Fulltext... Hierarchy... Expanded...H02P)

|  | H02K 29/00 |
Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices

|  | H02K 29/03 |
· | with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems [6]

|  | H02K 29/06 |
· | with position sensing devices (Fulltext... Hierarchy... Expanded...H02K 29/03 takes precedence) [4,6]

|  | H02K 29/08 |
· · | using magnetic effect devices, e.g. Hall-plates, magneto-resistors (Fulltext... Hierarchy... Expanded...H02K 29/12 takes precedence) [4]

|  | H02K 29/10 |
· · | using light effect devices [4]

|  | H02K 29/12 |
· · | using detecting coils [4]

|  | H02K 29/14 |
· | with speed sensing devices (Fulltext... Hierarchy... Expanded...H02K 29/03 takes precedence) [4,6]

|  | 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 (arrangements for handling mechanical energy structurally associated with motors Fulltext... Hierarchy... Expanded...H02K 7/00, e.g. Fulltext... Hierarchy... Expanded...H02K 7/06)

|  | 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 (arrangements for handling mechanical energy structurally associated with generators Fulltext... Hierarchy... Expanded...H02K 7/00, e.g. Fulltext... Hierarchy... Expanded...H02K 7/06)

|  | 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 rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors

|  | H02K 37/02 |
· | variable reluctance type [4]

|  | H02K 37/04 |
· · | Rotor situated within stator [4]

|  | H02K 37/06 |
· · | Rotor situated around stator [4]

|  | H02K 37/08 |
· · | Rotor axially facing stator [4]

|  | H02K 37/10 |
· | permanent magnet type (Fulltext... Hierarchy... Expanded...H02K 37/02 takes precedence) [4]

|  | H02K 37/12 |
· · | with stationary armature and rotating magnet [4]

|  | H02K 37/14 |
· · · | Magnet rotating within armature [4]

|  | H02K 37/16 |
· · · · | having horseshoe armature core [4]

|  | H02K 37/18 |
· · · · | homopolar type [4]

|  | H02K 37/20 |
· · | with rotating flux distributor, the armature and magnet both being stationary [4]

|  | H02K 37/22 |
· | Damping units [4]

|  | H02K 37/24 |
· | Structural association with auxiliary mechanical devices [4]

|  | 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; Sectional motors [3]

|  | H02K 41/025 |
· · | Asynchronous motors [3]

|  | H02K 41/03 |
· · | Synchronous motors; Motors moving step by step; Reluctance motors (Fulltext... Hierarchy... Expanded...H02K 41/035 takes precedence) [3]

|  | H02K 41/035 |
· · | Dc motors; Unipolar motors [3]

|  | 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 44/00 |
Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa [3]

|  | H02K 44/02 |
· | Electrodynamic pumps [3]

|  | H02K 44/04 |
· · | Conduction pumps [3]

|  | H02K 44/06 |
· · | Induction pumps [3]

|  | H02K 44/08 |
· | Magnetohydrodynamic (MHD) generators [3]

|  | H02K 44/10 |
· · | Constructional details of electrodes [3]

|  | H02K 44/12 |
· · | Constructional details of fluid channel [3]

|  | H02K 44/14 |
· · · | Circular or screw-shaped channel [3]

|  | H02K 44/16 |
· · | Constructional details of the magnetic circuit [3]

|  | H02K 44/18 |
· · | for generating ac power [3]

|  | H02K 44/20 |
· · · | by changing the polarity of the magnetic field [3]

|  | H02K 44/22 |
· · · | by changing the conductivity of the fluid [3]

|  | H02K 44/24 |
· · · | by reversing the direction of fluid [3]

|  | H02K 44/26 |
· · · | by creating a travelling magnetic field [3]

|  | H02K 44/28 |
· | Association of MHD generators with conventional generators (nuclear power plants including a MHD generator Fulltext... Hierarchy... Expanded...G21D 7/02) [3]

|  | 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 Fulltext... Hierarchy... Expanded...F16D 27/00, Fulltext... Hierarchy... Expanded...F16D 29/00, Fulltext... Hierarchy... Expanded...F16D 65/34, Fulltext... Hierarchy... Expanded...F16D 65/36; magnetic-particle clutches Fulltext... Hierarchy... Expanded...F16D 37/02; adapted for use as dynamometers Fulltext... Hierarchy... Expanded...G01L)

|  | H02K 49/02 |
· | of the asynchronous induction type

|  | H02K 49/04 |
· · | of the eddy-current hysteresis type

|  | H02K 49/06 |
· | of the synchronous type

|  | H02K 49/08 |
· | of the collector armature type

|  | H02K 49/10 |
· | of the permanent-magnet type

|  | H02K 49/12 |
· | of the 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

|  | H02K 55/00 |
Dynamo-electric machines having windings operating at cryogenic temperatures [3]

|  | H02K 55/02 |
· | of the synchronous type [3]

|  | H02K 55/04 |
· · | with rotating field windings [3]

|  | H02K 55/06 |
· | of the homopolar type [3]

|  | H02K 57/00 |
Dynamo-electric machines not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...H02K 17/00-H02K 55/00 [3]