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 57 to 59 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)

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.

 H01P
WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B; aerials H01Q; networks comprising lumped impedance elements H03H)
 H01P

Note(s)

In this subclass, the following expression is used with the meaning indicated:

  • "waveguide type" as applied to transmission lines includes only high-frequency coaxial cables or Lecher lines, and as applied to resonators, delay lines, or other devices includes all devices having distributed inductance and capacitance.

 H01P
Subclass index
WAVEGUIDES, TRANSMISSION LINES 3/00
DEVICES OF THE WAVEGUIDE TYPE
Auxiliary devices; coupling devices; resonators; delay lines 1/00; 5/00; 7/00; 9/00
MANUFACTURE 11/00
 H01P 1/00
Auxiliary devices (coupling devices of the waveguide type H01P 5/00)
 H01P 1/02
·  Bends; Corners; Twists
 H01P 1/04
·  Fixed joints (line connectors H01R; cable fittings H02G 15/00)
 H01P 1/06
·  Movable joints, e.g. rotating joints
 H01P 1/08
·  Dielectric windows (coupling devices for transit-time tubes H01J 23/36)
 H01P 1/10
·  for switching or interrupting
 H01P 1/11
·  ·  by ferromagnetic devices  [3]
 H01P 1/12
·  ·  by mechanical chopper
 H01P 1/14
·  ·  by electric discharge devices (discharge devices H01J 17/64)
 H01P 1/15
·  ·  by semiconductor devices  [2]
 H01P 1/16
·  for mode selection, e.g. mode suppression or mode promotion; for mode conversion (linking dissimilar lines or devices H01P 5/08)  [3]
 H01P 1/161
·  ·  sustaining two independent orthogonal modes, e.g. orthomode transducer  [3]
 H01P 1/162
·  ·  absorbing spurious or unwanted modes of propagation  [3]
 H01P 1/163
·  ·  specifically adapted for selection or promotion of the TE01 circular-electric mode  [3]
 H01P 1/165
·  for rotating the plane of polarisation  [2]
 H01P 1/17
·  ·  for producing a continuously rotating polarisation, e.g. circular polarisation  [2]
 H01P 1/175
·  ·  using Faraday rotators  [3]
 H01P 1/18
·  Phase-shifters (H01P 1/165 takes precedence; coupling devices with variable coupling factor H01P 5/04)  [2]
 H01P 1/185
·  ·  using a diode or a gas filled discharge tube  [3]
 H01P 1/19
·  ·  using a ferromagnetic device  [3]
 H01P 1/195
·  ·  ·  having a toroidal shape  [3]
 H01P 1/20
·  Frequency-selective devices, e.g. filters (resonators H01P 7/00)
 H01P 1/201
·  ·  Filters for transverse electromagnetic waves (H01P 1/212, H01P 1/213, H01P 1/215, H01P 1/219 take precedence)  [3]
 H01P 1/202
·  ·  ·  Coaxial filters (cascaded coaxial cavities H01P 1/205)  [3]
 H01P 1/203
·  ·  ·  Strip line filters  [3]
 H01P 1/205
·  ·  ·  Comb or interdigital filters; Cascaded coaxial cavities (H01P 1/203 takes precedence)  [3]
 H01P 1/207
·  ·  Hollow waveguide filters (H01P 1/212, H01P 1/213, H01P 1/215, H01P 1/219 take precedence)  [3]
 H01P 1/208
·  ·  ·  Cascaded cavities; Cascaded resonators inside a hollow waveguide structure (H01P 1/205 takes precedence)  [3]
 H01P 1/209
·  ·  ·  comprising one or more branching arms or cavities wholly outside the main waveguide  [3]
 H01P 1/211
·  ·  ·  Waffle-iron filters; Corrugated structures  [3]
 H01P 1/212
·  ·  suppressing or attenuating harmonic frequencies (H01P 1/215 takes precedence)  [3]
 H01P 1/213
·  ·  combining or separating two or more different frequencies (H01P 1/215 takes precedence)  [3]
 H01P 1/215
·  ·  using ferromagnetic material  [3]
 H01P 1/217
·  ·  ·  the ferromagnetic material acting as a tuning element in resonators  [3]
 H01P 1/218
·  ·  ·  the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters  [3]
 H01P 1/219
·  ·  Evanescent mode filters  [3]
 H01P 1/22
·  Attenuating devices (dissipative terminating devices H01P 1/26)
 H01P 1/23
·  ·  using ferromagnetic material  [3]
 H01P 1/24
·  Terminating devices
 H01P 1/26
·  ·  Dissipative terminations
 H01P 1/28
·  ·  Short-circuiting plungers (coupling devices with variable coupling factor H01P 5/04)
 H01P 1/30
·  for compensation of, or protection against, temperature or moisture effects
 H01P 1/32
·  Non-reciprocal transmission devices (H01P 1/02-H01P 1/30 take precedence)  [3]
 H01P 1/36
·  ·  Isolators  [2,3]
 H01P 1/365
·  ·  ·  Resonance absorption isolators  [3]
 H01P 1/37
·  ·  ·  Field displacement isolators  [3]
 H01P 1/375
·  ·  ·  using Faraday rotators  [3]
 H01P 1/38
·  ·  Circulators  [2,3]
 H01P 1/383
·  ·  ·  Junction circulators, e.g. Y-circulators  [3]
 H01P 1/387
·  ·  ·  ·  Strip line circulators  [3]
 H01P 1/39
·  ·  ·  ·  Hollow waveguide circulators  [3]
 H01P 1/393
·  ·  ·  using Faraday rotators  [3]
 H01P 1/397
·  ·  ·  using non-reciprocal phase shifters (H01P 1/393 takes precedence)  [3]
 H01P 3/00
Waveguides; Transmission lines of the waveguide type
 H01P 3/02
·  with two longitudinal conductors
 H01P 3/04
·  ·  Lines formed as Lecher wire pairs
 H01P 3/06
·  ·  Coaxial lines (not suitable for handling frequencies considerably beyond the audio range H01B 11/18)
 H01P 3/08
·  ·  Microstrips; Strip lines
 H01P 3/10
·  Wire waveguides, i.e. with a single solid longitudinal conductor
 H01P 3/12
·  Hollow waveguides (H01P 3/20 takes precedence)
 H01P 3/123
·  ·  with a complex or stepped cross-section, e.g. ridged or grooved waveguides (H01P 3/14 takes precedence)  [3]
 H01P 3/127
·  ·  with a circular, elliptic, or parabolic cross-section  [3]
 H01P 3/13
·  ·  specially adapted for transmission of the TE01circular-electric mode  [2]
 H01P 3/14
·  ·  flexible
 H01P 3/16
·  Dielectric waveguides, i.e. without a longitudinal conductor
 H01P 3/18
·  built-up from several layers to increase operating surface, i.e. alternately conductive and dielectric layers
 H01P 3/20
·  Quasi-optical arrangements for guiding a wave, e.g. focusing by dielectric lenses (quasi-optical devices in general H01Q 15/00)
 H01P 5/00
Coupling devices of the waveguide type (non-reciprocal devices H01P 1/32; for introducing or removing wave energy to or from the discharge in transit-time tubes H01J 23/36)
 H01P 5/02
·  with invariable factor of coupling (H01P 5/12 takes precedence)  [3]
 H01P 5/04
·  with variable factor of coupling
 H01P 5/08
·  for linking dissimilar lines or devices (H01P 1/16, H01P 5/04 take precedence; linking lines of the same kind but with different dimensions H01P 5/02)  [3]
 H01P 5/10
·  ·  for coupling balanced with unbalanced lines or devices
 H01P 5/103
·  ·  ·  Hollow-waveguide/coaxial-line transitions  [3]
 H01P 5/107
·  ·  ·  Hollow-waveguide/strip-line transitions  [3]
 H01P 5/12
·  Coupling devices having more than two ports (H01P 5/04 takes precedence)  [3]
 H01P 5/16
·  ·  Conjugate devices, i.e. devices having at least one port decoupled from one other port  [2]
 H01P 5/18
·  ·  ·  consisting of two coupled guides, e.g. directional couplers  [2]
 H01P 5/19
·  ·  ·  of the junction type  [3]
 H01P 5/20
·  ·  ·  ·  Magic-T junctions  [2,3]
 H01P 5/22
·  ·  ·  ·  Hybrid ring junctions  [2,3]
 H01P 7/00
Resonators of the waveguide type (structurally associated with transit-time tubes and interacting with the discharge therein H01J 23/18; microwave heating devices H05B 6/64)
 H01P 7/02
·  Lecher resonators
 H01P 7/04
·  Coaxial resonators
 H01P 7/06
·  Cavity resonators
 H01P 7/08
·  Strip line resonators  [3]
 H01P 7/10
·  Dielectric resonators  [3]
 H01P 9/00
Delay lines of the waveguide type (structurally associated with transit-time tubes and interacting with the discharge therein H01J 23/24)
 H01P 9/02
·  Helical lines
 H01P 9/04
·  Interdigital lines
 H01P 11/00
Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type (manufacture of coaxial cables H01B 13/00)