CPC Definition - Subclass H02N

Last Updated Version: 2017.08
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
Definition statement

This place covers:

Electrostatic generators, motors, clutches, or holding devices;

Other non-dynamo-electric generators or motors;

Holding or levitation devices using magnetic attraction or repulsion;

Arrangements for starting, regulating, braking, or otherwise controlling such machines unless in conjoint operation with a second machine.

References
Limiting references

This place does not cover:

Pumps

F04D

Dynamo-electric machines

H02K

Loudspeakers and microphones

H04R

{Electrostatic motors}
References
Limiting references

This place does not cover:

Switches making use of micromechanics

H01H 1/0036

Electrostatic relays; Electro-adhesion relays

H01H 59/00

Making use of micromechanics

H01H 59/0009

Informative references

Attention is drawn to the following places, which may be of interest for search:

Reflecting element being a micromechanical device and being moved or deformed by electrostatic means

G02B 26/0841

Special rules of classification

Electroactive polymers: see rules of classification in H02N 1/006

{of the gap-closing type (H02N 1/004 takes precedence)}
Definition statement

This place covers:

electrostatic actuators:

media0.png

References
Limiting references

This place does not cover:

Electrostatic motors, in which a body is moved along a path due to interaction with an electric field travelling along the path

H02N 1/004

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electro-chemical actuators; Actuators having a material for absorbing or desorbing gas, e.g. a metalhydride; Actuators using the difference in osmotic pressure between fluids; Actuators with elements stretchable when contacted with liquid rich in ions, with UV light, with a salt solution

F03G 7/005

Special rules of classification

The electroactive polymers (EAPs) are of three types:

1) The EAPs based on some electrochemical effect inside the polymer (e.g. or i.e. ionic EAPs). Electric machines with the same are classified in F03G 7/00.

2/3) The EAPs based on electrostrictive, or electrostatic (or a combination of electrostrictive and electrostatic) effects. Electric machines based on electrostrictive / electrostatic EAPs are classified in H02N 2/00.

{Laterally driven motors, e.g. of the comb-drive type}
Definition statement

This place covers:

Comb shaped motors the direction of movement is parallel to the extension direction of the comb teeth, among others

References
Limiting references

This place does not cover:

Details of microelectro-mechanical resonators

H03H 9/02244

Constructional features of microelectro-mechanical resonators of material which is not piezo-electric, electrostrictive, or magnetostrictive

H03H 9/2405

Informative references

Attention is drawn to the following places, which may be of interest for search:

Details of microelectro-mechanical resonators

H03H 9/02244

Special rules of classification

Comb shaped motors with oscillating movement are classified in H02N 1/006

with conductive charge carrier, i.e. capacitor machines
Definition statement

This place covers:

Including conveyor belt carrying conductive charge carriers charged by induction, i.e. like capacitors.

References
Limiting references

This place does not cover:

Machines of the corona charging type in which an (usually) insulating belt is charged by charges generated by corona effect

H02N 1/12

Special rules of classification

Influence type generators built as a conveyor belt can be of two types (according to the way the belt is charged): induction charging type and corona charging type.

The corona charging type usually comprises an insulating belt charged by charges generated by corona effect. This type of machine is classified in H02N 1/12 (even if the belt comprises some conductive element)

The induction charging type are a conveyor belt version (i.e. a linear version) of capacitor machines in which conductive charge carriers are charged by induction ( i.e. like capacitors). This type of machine is classified in H02N 1/08.

in the form of a conveyor belt, e.g. van de Graaff machine
Definition statement

This place covers:

Machines of the corona charging type in which an (usually) insulating belt is charged by charges generated by corona effect. (if the belt contains some conductive element see Special Rules of Classification).

References
Limiting references

This place does not cover:

Machines of the induction charging type i.e. in which the belt carries conductive charge carriers charged by induction

H02N 1/08

Special rules of classification

Influence type generators built as a conveyor belt can be of two types (according to the way the belt is charged): induction charging type and corona charging type.

The corona charging type usually comprises an insulating belt charged by charges generated by corona effect. This type of machine is classified in H02N 1/12 (even if the belt comprise some conductive element)

The induction charging type are a conveyor belt version (i.e. a linear version) of capacitor machines in which conductive charge carriers are charged by induction ( i.e. like capacitors). This type of machine is classified in H02N 1/08.

Electric machines in general using piezo-electric effect, electrostriction or magnetostriction (generating mechanical vibrations in general B06B; piezo-electric, electrostrictive or magnetostrictive devices in general H01L 41/00)
Definition statement

This place covers:

Electric motors or generators using piezo-electric (PE) or magnetostriction (MS) devices described under H01L 41/00 as primary motion producing or electricity generating parts. In particular:

Linear or rotary motors, including positioners or actuators, based on at least one PE or MS device in cooperation with at least one driven element as mechanical output, e.g. a rotor or translating shaft. The motors can operate based on standing or travelling waves or quasi-static deformation generated by said PE or MS devices;

Generators based on at least one PE or MS device in cooperation with at least one driving element as mechanical input;

Aspects such as the operating principle, mechanical construction built around said PE or MS devices, driving or control circuits or methods, and methods relating to manufacturing of the engines.

Further information:

In this group the PE or MS devices are seen as black boxes which could in principle be replaced by any device of equal electromechanical conversion functionality.

If no relevant details of the PE or MS devices themselves are given classification is done only in this group. If particular details of the PE or MS devices are concerned, e.g. these devices appear to be relevant to other technical fields as well, classification in H01L 41/00 is required. If no details other than the PE or MS devices themselves are described, e.g. PE stacks or benders are just called actuators or generators, classification is done only in H01L 41/00.

References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Mechanical vibration generators

B06B 1/06

Adjustable work or tool supports in machining tools, e.g. motorised platforms

B23Q 1/34

Hair clippers; Shavers

B26B 19/28

Typewriters

B41J 2/295

PE generators - in tyre sensors- in spark lighters - in firing or trigger mechanisms of weapons - for measurement devices- in photographic flash ignition

B60C 23/0411, F23Q 2/287, F23Q 3/002, F41A 19/62, G01, G03B 15/0463,

Fuel injection in combustion engines - Control circuits or methods for injectors - Injectors- Injection valves

F02D 41/2096, F02M 51/0603, F02M 59/468, F02M 63/0026,

Pumps - Diaphragm type micropumps - Tube type- Oscillatory type, e.g. fans

F04B 17/003, F04B 43/046, F04B 43/095, F04D 33/00,

Brakes

F16D 2121/28, F16D 2129/12

Adjustable optical elements, e.g. motorised lenses or objectives

G02B 7/02 - G02B 7/10

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrostatic motors or generators

H02N 1/00

Motors using thermal drive effects

H02N 10/00

Motors or generators not provided for elsewhere; Alleged electric or magnetic perpetua mobilia

H02N 11/00

Liquid wave driven, e.g. ocean powered, generators

F03B 13/14

Oscillatory wind driven generators

F03D 5/06

PE or MS devices in general, e.g. PE stacks or benders; Structural details and fabrication thereof

H01L 41/00

Oscillatory dynamo-electric generators

H02K 35/00

Special rules of classification

In this group, in the absence of an indication to the contrary, an invention is classified in the last appropriate place.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Motor

Apparatus producing mechanical motion from electrical energy, the motion may be continuous or in separate strokes ;The term includes thus actuators or positioners, wherein the driven element is movable along a certain linear or angular stroke (limited stroke motors)

Ultrasonic motor

PE or MS motor operating in ultrasonic frequency range

perpetua mobilia

latin expression for devices having perpetual motion

Synonyms and Keywords

BAW

Bulk acoustic wave

EAP

Electroactive polymer

MEMS

Microelectromechanical system

MS

Magnetostrictive

PE

Piezoelectric or electrostrictive

PEG

Piezoelectric generator

SAW

Surface acoustic wave

USM

Ultrasonic motor

Travelling wave motorVibration wave motor

PE or MS motor

{producing non-specific motion; Details common to machines covered by H02N 2/02 - H02N 2/16}
Definition statement

This place covers:

Motors wherein the type of motion is irrelevant, e.g. driving devices which may be used to advance a driven body in arbitrary directions, and details thereof.

Details of linear or rotary motors covered by H02N 2/02 - H02N 2/16 wherein the type of motion is irrelevant, e.g. of mechanical, electrical or thermal nature, such as friction interfaces between driving and driven parts.

References
Limiting references

This place does not cover:

Details of linear or rotary motors wherein the type of motion is relevant

H02N 2/02 - H02N 2/16

Informative references

Attention is drawn to the following places, which may be of interest for search:

Friction linings

F16D 69/00

Springs in general

F16F 1/00

Casings for dynamo-electric machines

H02K 5/00

{Inchworm motors}
Definition statement

This place covers:

Linear motors comprising at least two clamping devices and one intermediate driving device which are excited in sequence to grip and move a driven body.

{Inertial sliding motors}
Definition statement

This place covers:

Linear motors comprising a driving device which is excited asymmetrically during multiple phases such that in one phase the static friction between a driven body and its support is overcome, thereby effecting a sliding motion between them.

{by pressing one or more vibrators against the driven body}
Definition statement

This place covers:

Linear motors wherein a driven body, e.g. a translating rail, is moved by vibrations of one or more vibrators pressed against the driven body.

References
Limiting references

This place does not cover:

Details of the vibrator

H02N 2/0005

using travelling waves {, i.e. Rayleigh surface waves}
Definition statement

This place covers:

Linear motors wherein a driven body is moved by Rayleigh type surface acoustic waves only.

{by pressing one or more vibrators against the rotor}
Definition statement

This place covers:

Rotary motors wherein a rotor is moved by vibrations of one or more vibrators pressed against the rotor.

References
Limiting references

This place does not cover:

Details of the vibrator

H02N 2/0005

{Cycloid or wobble motors; Harmonic traction motors}
Definition statement

This place covers:

Rotary motors wherein a cycloid type motion of a rotor is caused by radial or tangential driving devices excited in different phases.

{Langevin motors}
Definition statement

This place covers:

Rotary motors wherein a substantially rod-shaped vibrator excited to axial vibrations, e.g. a longitudinal mode, combined with lateral vibrations, e.g. a bending or torsion mode, creates a hula-hoop like progressive wave on its surface, thereby driving a rotor.

using travelling waves {, i.e. Rayleigh surface waves}
Definition statement

This place covers:

Rotary motors wherein a rotor is moved by Rayleigh type surface acoustic waves only.

Generators in which thermal or kinetic energy is converted into electrical energy by ionisation of a fluid and removal of the charge therefrom (discharge tubes functioning as thermionic generators H01J 45/00)
Definition statement

This place covers:

Generators based on the collection of free electrical charges in the flow. e.g. inonized gas in a thermal engine exhaust.

References
Limiting references

This place does not cover:

Discharge tubes functioning as thermionic generators

H01J 45/00

Use of naturally-occurring electricity, e.g. lightning or static electricity

H05F 7/00

Electric motors using thermal effects {(motors using expansion or contraction of bodies due to heating or cooling F03G 7/06)}
Definition statement

This place covers:

Devices working around the Curie point.

References
Limiting references

This place does not cover:

Radiation pyrometers

G01J 5/34

Thermometers using thermo-electric or thermomagnetic elements

G01K 7/00

Selection of materials for magnetography, e.g. for Curie-point writing

G03G 5/00

Thermomagnetic generators, e.g. ;using Nernst-Ettinghausen effect (plurality of solid state components formed in or on a common substrate)

H01L 37/00

Using thermal change of magnetic permeability, e.g. working above and below the Curie point

H01L 37/04

Informative references

Attention is drawn to the following places, which may be of interest for search:

Mechanical-power-producing mechanisms using a shape memory alloy

F03G 7/065

Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means (by hydrostatic pressure F03B 17/04; {by mechanical means F03G 7/10;} by dynamo-electric means, {including arrangements of permanent magnets interacting with other permanent magnets,} H02K 53/00)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Alleged perpetua mobilia obtained by hydrostatic pressure

F03B 17/04

Alleged perpetua mobilia obtained by mechanical means

F03G 7/10

Alleged perpetua mobilia obtained by dynamo-electric means, including arrangements of permanent magnets interacting with other permanent magnets

H02K 53/00

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

perpetua mobilia

latin expression for devices having perpetual motion

{Generators}
References
Limiting references

This place does not cover:

Radiation pyrometers

G01J 5/34

Thermometers using thermo-electric or thermomagnetic elements

G01K 7/00

Selection of materials for magnetography, e.g. for Curie-point writing

G03G 5/00

Thermoelectric generators comprising a junction of dissimilar materials, i.e. exhibiting Seebeeck or Peltier effect with or without other thermo-electric effects or thermomagnetic effects

H01L 35/00

Thermomagnetic generators, e.g. using Nernst-Ettinghausen effect (plurality of solid state components formed in or on a common substrate)

H01L 37/00

Using thermal change of magnetic permeability, e.g. working above and below the Curie point

H01L 37/04

Electrochemical current or voltage generators

H02M6/00 - H01M 14/00

{Motors}
References
Limiting references

This place does not cover:

Electro-chemical actuators; Actuators having a material for absorbing or desorbing gas, e.g. a metalhydride; Actuators using the difference in osmotic pressure between fluids; Actuators with elements stretchable when contacted with liquid rich in ions, with UV light, with a salt solution

F03G 7/005

Special rules of classification

Electroactive polymers: see rules of classification in H02N 1/006

{Alleged electric or magnetic perpetua mobilia}
References
Limiting references

This place does not cover:

Perpetua mobilia obtained by the reciprocal attraction / repulsion of a system of magnets arranged as the coils and or the magnets of the normal electrodynamic machines, including systems comprising only permanent magnets

H02K 53/00

Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Supporting structures for apparatus specially adapted for handling semiconductors using electrostatic chucks

H01L 21/6831

Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for (electric or magnetic devices for holding work on machine tools B23Q 3/15{; monorail vehicle propulsion or suspension B60L 13/00}; sliding or levitation devices for railway systems B61B 13/08; material handling devices associated with conveyors incorporating devices with electrostatic or magnetic grippers B65G 47/92; separating thin or filamentary articles from piles using magnetic force B65H 3/16; delivering thin or filamentary articles from magnetic holders by air blast or suction B65H 29/24; bearings using magnetic or electric supporting means F16C 32/04; relieving bearing loads using magnetic means F16C 39/06; magnets H01F 7/00; dynamo-electric clutches or brakes H02K 49/00{; electric furnaces with simultaneous levitation and heating H05B 6/32})
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electric or magnetic devices for holding work on machine tools

B23Q 3/15

Monorail vehicle propulsion or suspension

B60L 13/00

Sliding or levitation devices for railway systems

B61B 13/08

Material handling devices associated with conveyors incorporating devices with electrostatic or magnetic grippers

B65G 47/92

Separating thin or filamentary articles from piles using magnetic force

B65H 3/16

Delivering thin or filamentary articles from magnetic holders by air blast or suction

B65H 29/24

Bearings using magnetic or electric supporting means

F16C 32/04

Relieving bearing loads using magnetic means

F16C 39/06

Magnets

H01F 7/00

Apparatus specially adapted for handling semiconductor using electrostatic chucks

H01L 21/6831

Details of electrostatic chucks

H01L 21/6833

Dynamo-electric clutches or brakes

H02K 49/00

Electric furnaces with simultaneous levitation and heating

H05B 6/32

Repulsion by the Meissner effect (superconductors or hyperconductors in general H01L 39/00)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Superconductors or hyperconductors in general

H01L 39/00