IPC 7 English version H02K 33/00-H02K 57/00

IPC ⁷ English version

H02K 21/00 - H02K 31/04

H02K03300-H02K05700

SECTION H – ELECTRICITY

H 02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

H 02 K

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

33/

Motors with reciprocating, oscillating, or vibrating magnet, armature, or coil system (arrangements for handling mechanical energy structurally associated with motors H02K 7/00, e.g. H02K 7/06)

33/

with armature moved one way by energisation of a single coil system and returned by mechanical force, e.g. by spring

33/

wherein the frequency of operation is determined by the frequency of uninterrupted ac energisation

33/

with polarised armature

33/

with dc energisation superimposed on ac energisation

33/

wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armature

33/

with armature moving in alternate directions by alternate energisation of two coil systems

33/

wherein the alternate energisation and de-energisation of the two coil systems are effected or controlled by movement of the armature

33/

with polarised armature moving in alternate directions by reversal or energisation of a single coil system

33/

with coil system moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnet

35/

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 H02K 7/00, e.g. H02K 7/06)

35/

with moving magnet and stationary coil system

35/

with moving coil system and stationary magnet

35/

with moving flux distributor, and both coil system and magnet stationary

37/

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

37/

variable reluctance type [4]

37/

Rotor situated within stator [4]

37/

Rotor situated around stator [4]

37/

Rotor axially facing stator [4]

37/

permanent magnet type (H02K 37/02 takes precedence) [4]

37/

with stationary armature and rotating magnet [4]

37/

Magnet rotating within armature [4]

37/

having horseshoe armature core [4]

37/

homopolar type [4]

37/

with rotating flux distributor, the armature and magnet both being stationary [4]

37/

Damping units [4]

37/

Structural association with auxiliary mechanical devices [4]

39/

Generators specially adapted for producing a desired non-sinusoidal waveform

41/

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

41/

Linear motors; Sectional motors [3]

41/

025

Asynchronous motors [3]

41/

Synchronous motors; Motors moving step by step; Reluctance motors (H02K 41/035 takes precedence) [3]

41/

035

Dc motors; Unipolar motors [3]

41/

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

44/

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]

44/

Electrodynamic pumps [3]

44/

Conduction pumps [3]

44/

Induction pumps [3]

44/

Magnetohydrodynamic (MHD) generators [3]

44/

Constructional details of electrodes [3]

44/

Constructional details of fluid channel [3]

44/

Circular or screw-shaped channel [3]

44/

Constructional details of the magnetic circuit [3]

44/

for generating ac power [3]

44/

by changing the polarity of the magnetic field [3]

44/

by changing the conductivity of the fluid [3]

44/

by reversing the direction of fluid [3]

44/

by creating a travelling magnetic field [3]

44/

Association of MHD generators with conventional generators (nuclear power plants including a MHD generator G21D 7/02) [3]

47/

Dynamo-electric converters

47/

Ac/dc converters or vice versa

47/

Motor/generators

47/

Cascade converters

47/

Single-armature converters

47/

with booster machine on the ac side

47/

Dc/dc converters

47/

Motor/generators

47/

Single-armature converters, e.g. metadyne

47/

Ac/ac converters

47/

Motor/generators

47/

Single-armature frequency converters with or without phase-number conversion

47/

having windings for different numbers of poles

47/

operating as under- or over-synchronously running asynchronous induction machines, e.g. cascade arrangement of asynchronous and synchronous machines

47/

operating as commutator machines with added slip-rings

47/

Single-armature phase-number converters without frequency conversion

49/

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)

49/

of the asynchronous induction type

49/

of the eddy-current hysteresis type

49/

of the synchronous type

49/

of the collector armature type

49/

of the permanent-magnet type

49/

of the acyclic type

51/

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

53/

Alleged dynamo-electric perpetua mobilia

55/

Dynamo-electric machines having windings operating at cryogenic temperatures [3]

55/

of the synchronous type [3]

55/

with rotating field windings [3]

55/

of the homopolar type [3]

57/

Dynamo-electric machines not provided for in groups H02K 17/00 to H02K 55/00 [3]

H02K 21/00 - H02K 31/04