H
SECTION H — ELECTRICITY
 H

Note(s)

These Notes cover the basic principles and general instructions for use of section H.

  1. Section H covers:
    1. 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);
    2. generation of electricity, which covers the generation, conversion and distribution of electricity together with the controlling of the corresponding gear;
    3. applied electricity, which covers:
      1. general utilisation techniques, viz. those of electric heating and electric lighting circuits;
      2. some special utilisation techniques, either electric or electronic in the strict sense, which are not covered by other sections of the Classification, including:
        1. electric light sources, including lasers;
        2. electric X-ray technique;
        3. electric plasma technique and the generation and acceleration of electrically charged particles or neutrons;
    4. basic electronic circuits and their control;
    5. radio or electric communication technique;
    6. the use of a specified material for the manufacture of the article or element described. In this connection, paragraphs 88 to 90 of the Guide should be referred to.
  2. In this section, the following general rules apply:
    1. 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;
    2. The electrical applications referred to under (a), above, either general or particular, include:
      1. the therapeutic processes and apparatus, in class A61;
      2. the electric processes and apparatus used in various laboratory or industrial operations, in classes B01 and B03 and in subclass B23K;
      3. the electricity supply, electric propulsion and electric lighting of vehicles in general and of particular vehicles, in the subsection "Transporting" of section B;
      4. the electric ignition systems of internal-combustion engines, in subclass F02P, and of combustion apparatus in general, in subclass F23Q;
      5. 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;
    3. 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.
  3. In this section, the following special cases occur:
    1. Among the general applications covered by sections other than section H, it is worth noting that electric heating in general is covered by subclasses F24D or F24H or class F27, and that electric lighting in general is partly covered by class F21, since in section H (see I(c), above) there are places in H05B which cover the same technical subjects;
    2. 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 H05B;
    3. 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 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 H05B, whereas the physical arrangement which their combination constitutes is covered by the various subclasses of class F21;
    4. As regards heating, not only the electric elements and circuitry designs, as such, are covered by subclass 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 B23K in connection with welding, it can be seen that electric heating is not covered by the general rule stated in II, above.

 H01
BASIC ELECTRIC ELEMENTS
 H01

Note(s)

  1. Processes involving only a single technical art, e.g. drying, coating, for which provision exists elsewhere are classified in the relevant class for that art.
  2. Attention is drawn to the Notes following the titles of class B81 and subclass B81B relating to "micro-structural devices" and "micro-structural systems". [7]
 H01F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES (ceramics based on ferrites C04B 35/26; alloys C22C; thermomagnetic devices H01L 37/00; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R)  [2]
 H01F
Subclass index
MAGNETS, ELECTROMAGNETS
Characterised by the magnetic material 1/00
Cores, yokes, armatures 3/00
Coils 5/00
Superconducting coils or magnets 6/00
Magnets 7/00
Magnetising, demagnetising 13/00
Manufacture 41/00
THIN FILMS 10/00
FIXED INDUCTANCES OR TRANSFORMERS
Of the signal type 17/00, 19/00
Other than of the signal type 30/00, 37/00
Manufacture 41/00
VARIABLE INDUCTANCES OR TRANSFORMERS
Of the signal type 21/00
Other than of the signal type 29/00
Manufacture 41/00
DETAILS OF TRANSFORMERS OR INDUCTANCES, IN GENERAL 27/00
SUPERCONDUCTIVE OR CRYOGENIC TRANSFORMERS 36/00
ADAPTATIONS OF TRANSFORMERS OR INDUCTANCES FOR SPECIFIC APPLICATIONS OR FUNCTIONS 38/00
P:140 H01F 1/00
Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties (thin magnetic films characterised by their composition H01F 10/10)
 H01F 1/01
·  of inorganic materials (H01F 1/44 takes precedence)  [6]
 H01F 1/03
·  ·  characterised by their coercivity  [6]
 H01F 1/03

Note(s)

Group H01F 1/40 takes precedence over H01F 1/03 [6]

 H01F 1/032
·  ·  ·  of hard-magnetic materials  [6]
 H01F 1/12
·  ·  ·  of soft-magnetic materials  [6]
 H01F 1/40
·  ·  of magnetic semiconductor materials, e.g. CdCr2S4 (devices using galvano-magnetic or similar effects H01L 43/00)  [6]
 H01F 1/44
·  of magnetic liquids, e.g. ferrofluids (particles in a bonding agent H01F 1/12)  [6]
P:130 H01F 3/00
Cores, yokes, or armatures (magnetic materials H01F 1/00; permanent magnets H01F 7/02)
P:120 H01F 5/00
Coils (superconducting coils H01F 6/06; fixed inductances of the signal type H01F 17/00)
 H01F 5/02
·  wound on non-magnetic supports, e.g. formers
 H01F 5/06
·  Insulation of windings
P:90 H01F 6/00
Superconducting magnets; Superconducting coils  [6]
 H01F 6/06
·  Coils, e.g. winding, insulating, terminating or casing arrangements therefor  [6]
P:110 H01F 7/00
Magnets (superconducting magnets H01F 6/00; for separation of solid materials from solid materials or fluids B03C 1/00; for bench or like work-holders B23B 31/02, B23Q 3/00; work-holding devices B25B 11/00; lifting magnets B66C 1/00; for electric meters G01R; for relays H01H; for dynamo-electric machines H02K)
 H01F 7/02
·  Permanent magnets
 H01F 7/04
·  ·  Means for releasing the attractive force
 H01F 7/06
·  Electromagnets; Actuators including electromagnets  [6]
 H01F 7/08
·  ·  with armatures
 H01F 7/20
·  ·  without armatures (cores H01F 3/00; coils H01F 5/00)
P:100 H01F 10/00
Thin magnetic films, e.g. of one-domain structure (magnetic record carriers G11B 5/00; thin-film magnetic stores G11C)
 H01F 10/08
·  characterised by magnetic layers (applying magnetic films to substrates H01F 41/14)  [3]
 H01F 10/10
·  ·  characterised by the composition  [3]
 H01F 10/12
·  ·  ·  being metals or alloys (intermetallic compounds H01F 10/10)  [3]
P:150 H01F 13/00
Apparatus or processes for magnetising or demagnetising (for degaussing ships B63G 9/00; for clocks or watches G04D 9/00; demagnetising arrangements for colour television H04N 9/16)
 H01F 17/00 - 
H01F 38/00

Note(s)

Groups H01F 17/00-H01F 38/00, with the exception of groups H01F 27/42 and H01F 38/28, cover only structural or constructional aspects of transformers, inductive reactors, chokes or the like. These groups do not cover circuit arrangement of such devices, which are covered by the appropriate functional places. [6]

P:60 H01F 17/00
Fixed inductances of the signal type (coils in general H01F 5/00)
 H01F 17/02
·  without magnetic core
 H01F 17/04
·  with magnetic core
 H01F 17/06
·  ·  with core substantially closed in itself, e.g. toroid
P:40 H01F 19/00
Fixed transformers or mutual inductances of the signal type (H01F 36/00 takes precedence)  [3]
P:20 H01F 21/00
Variable inductances or transformers of the signal type (H01F 36/00 takes precedence)  [3]
 H01F 21/02
·  continuously variable, e.g. variometers
 H01F 21/12
·  discontinuously variable, e.g. tapped
P:80 H01F 27/00
Details of transformers or inductances, in general  [6]
 H01F 27/02
·  Casings
 H01F 27/06
·  Mounting, supporting, or suspending transformers, reactors, or choke coils
 H01F 27/08
·  Cooling (heat-transfer elements F28F); Ventilating (structural details of casings H01F 27/02)
 H01F 27/10
·  ·  Liquid cooling
 H01F 27/24
·  Magnetic cores
 H01F 27/245
·  ·  made from sheets, e.g. grain-oriented (H01F 27/26 takes precedence)  [5]
 H01F 27/25
·  ·  made from strips or ribbons (H01F 27/26 takes precedence)  [5]
 H01F 27/255
·  ·  made from particles (H01F 27/26 takes precedence)  [5]
 H01F 27/26
·  ·  Fastening parts of the core together; Fastening or mounting the core on casing or support (on coil H01F 27/30)
 H01F 27/28
·  Coils; Windings; Conductive connections
 H01F 27/29
·  ·  Terminals; Tapping arrangements  [6]
 H01F 27/30
·  ·  Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
 H01F 27/32
·  ·  Insulating of coils, windings, or parts thereof
 H01F 27/33
·  Arrangements for noise damping
 H01F 27/34
·  Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
 H01F 27/42
·  Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils (circuits for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output H02P 13/00; impedance networks H03H)  [6]
P:30 H01F 29/00
Variable transformers or inductances not covered by group H01F 21/00
P:50 H01F 30/00
Fixed transformers not covered by group H01F 19/00  [6]
 H01F 30/06
·  characterised by the structure  [6]
P:0 H01F 36/00
Transformers with superconductive windings or with windings operating at cryogenic temperatures (superconducting magnets or superconducting coils H01F 6/00)  [3]
P:70 H01F 37/00
Fixed inductances not covered by group H01F 17/00  [6]
P:10 H01F 38/00
Adaptations of transformers or inductances for specific applications or functions  [6]
 H01F 38/14
·  Inductive couplings  [6]
 H01F 38/20
·  Instrument transformers  [6]
 H01F 38/22
·  ·  for single phase ac  [6]
 H01F 38/28
·  ·  ·  Current transformers  [6]
P:160 H01F 41/00
Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass
 H01F 41/02
·  for manufacturing cores, coils, or magnets (H01F 41/14 takes precedence; for dynamo-electric machines H02K 15/00)  [3]
 H01F 41/04
·  ·  for manufacturing coils
 H01F 41/06
·  ·  ·  Winding
 H01F 41/10
·  ·  ·  Connecting leads to windings (making electric connections in general H01R 43/00)
 H01F 41/12
·  ·  ·  Insulating of windings (of conductors in general H01B 13/06)
 H01F 41/14
·  for applying magnetic films to substrates (covering metals, or materials with metals, in general C23C; manufacturing record carriers G11B 5/84)  [3]