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]
 H01B
CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING, OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F 1/00; waveguides H01P; installation of cables or lines, or of combined optical and electric, cables or lines H02G)
 H01B
Subclass index
CONDUCTORS OR CABLES
Characterised by the material 1/00
Characterised by the construction 5/00, 7/00
Special types for: communication; power; superconductive cables 11/00; 9/00; 12/00
Manufacture; salvaging 13/00; 15/00
INSULATORS OR INSULATING BODIES
Characterised by the material 3/00
Characterised by the construction 17/00
Manufacture 19/00

 H01C
RESISTORS
 H01C

Note(s)

  1. In this subclass, the following term is used with the meaning indicated:
    • "adjustable" means mechanically adjustable.  [2]
  2. Variable resistors, the value of which is changed non-mechanically, e.g. by voltage or temperature, are classified in group H01C 7/00.  [2]
 H01C
Subclass index
NON-ADJUSTABLE RESISTORS 3/00, 7/00, 8/00, 11/00
ADJUSTABLE RESISTORS 10/00
OTHER RESISTORS 13/00
DETAILS 1/00
MANUFACTURE 17/00

 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

 H01G
CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B 3/00; capacitors with potential-jump or surface barrier H01L 29/00)
 H01G
Subclass index
CAPACITORS
With fixed capacitance 4/00
With variable capacitance: by mechanical means; by non-mechanical means 5/00; 7/00
Details 2/00
ELECTROLYTIC APPARATUS 9/00
STRUCTURAL COMBINATIONS 15/00, 17/00
MANUFACTURE 4/00, 5/00, 7/00, 9/00, 13/00

 H01H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B 7/10; overvoltage protection resistors, resistive arresters H01C 7/12, H01C 8/04; electrolytic self-interrupters H01G 9/18; switching devices of the waveguide type H01P; devices for interrupted current collection H01R 39/00; overvoltage arresters using spark gaps H01T 4/00; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K 17/00)
 H01H

Note(s)

  1. This subclass covers (in groups H01H 69/00-H01H 87/00) devices for the protection of electric lines or electric machines or apparatus in the event of undesired change from normal electric working conditions, the electrical condition serving directly as the input to the device.
  2. This subclass does not cover bases, casings, or covers accommodating two or more switching devices or for accommodating a switching device as well as another electric component, e.g. bus-bar, line connector. Those bases, casings or covers are covered by group H02B 1/26.
  3. In this subclass, the following terms or expressions are used with the meanings indicated:
    • "relay" means a switching device having contacts which are operated from electric inputs which supply, directly or indirectly, all the mechanical energy necessary to cause both the closure and the opening of the contacts;
    • "driving mechanism" refers to the means by which an operating force applied to the switch is transmitted to the moving contact or contacts;
    • "operating" is used in a broader sense than "actuating" which is reserved for those parts not touched by hand to effect switching;
    • "acting" or "action" means a self-induced movements of parts at one stage of the switching. These connotations apply to all parts of the verbs "to operate"; "to actuate", and "to act", and to words derived therefrom, e.g. to "actuation".
  4. In this subclass, details are classified as follows:
    However, mechanical details directly producing electronic effects are classified in group H03K 17/94.  [4]
 H01H
Subclass index
ELECTRIC SWITCHES
Characterised by the principle of control
mechanical
rectilinearly movable: one direction; two directions 13/00; 15/00
with angular displacement: unlimited angle; limited angle 19/00; 21/00
by pulling; by tumbling 17/00; 23/00
with compound movements 25/00
by removable members 27/00
physical
general; electric or magnetic field; heat; explosion 35/00; 36/00; 37/00; 39/00
Characterised by the contacts
liquid 29/00
Characterised by the voltage or the intensity
without arc-extinguishing means; with such means 31/00; 33/00
Characterised by the actuation duration
manual; programme 41/00; 43/00
Manufacture 11/00
RELAYS
Electromagnetic; dynamo-electric; magnetostrictive 51/00; 53/00; 55/00
Electrostrictive or piezo-electric; electrostatic; electrothermal 57/00; 59/00; 61/00
Details
general; electromechanical; circuits 45/00; 50/00; 47/00
Manufacture 49/00
SELECTORS
Types 67/00
Details 63/00
Manufacture 65/00
SECTIONALISERS
low-tension with blade-type contact 21/54
for high tension 31/00
combined with fuses 85/54
PROTECTIVE DEVICES
Circuit-breaking switches
with resetting: manual; by motor; separate 73/00; 75/00; 77/00
Protective switches
by short-circuit; opening and closing; particular 79/00; 81/00; 83/00
Fuses; evaporation devices 85/00; 87/00
Details of protective switches and relays 71/00
Manufacture 69/00
COMBINATIONS 89/00
GENERAL DETAILS
Contacts 1/00
Mechanisms
operating contacts in general; snap-action; delay 3/00; 5/00; 7/00
Other details 9/00

 H01J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; arc lamps with consumable electrodes H05B; particle accelerators H05H)
 H01J

Note(s)

  1. This subclass covers only devices for producing, influencing, or using a flow of electrons or ions, e.g. for controlling, indicating, or switching of electric current, counting electric pulses, producing light or other electromagnetic oscillations, such as X-rays, or for separating or analysing radiation or particles, and having a closed or substantially closed casing containing a chosen gas, vapour, or vacuum, upon the pressure and nature of which the characteristics of the device depend.

    Light sources using a combination (other than covered by group H01J 61/96 of this subclass) of discharge and other kinds of light generation are covered by group H05B 35/00.

  2. In this subclass, groups H01J 1/00-H01J 7/00 relate only to:
    1. details of an unspecified kind of discharge tube or lamp, or
    2. details mentioned in a specification as applicable to two or more kinds of tubes or lamps as defined by groups H01J 11/00, H01J 13/00, H01J 15/00, H01J 17/00, H01J 21/00, H01J 25/00, H01J 27/00, H01J 31/00, H01J 33/00, H01J 35/00, H01J 37/00, H01J 40/00, H01J 41/00, H01J 47/00, H01J 49/00, H01J 61/00, H01J 63/00 or H01J 65/00, hereinafter called basic kinds. A detail only described with reference to, or clearly only applicable to, tubes or lamps of a single basic kind is classified in the detail group appropriate to tubes or lamps of that basic kind, e.g. H01J 17/04.
  3. In this subclass, the following term is used with the meaning indicated:
    • "lamp" includes tubes emitting ultra-violet or infra-red light.
  4. Attention is drawn to the definition of the expression "spark gaps" given in the Note following the title of subclass H01T.  [4]
  5. Apparatus or processes specially adapted for the manufacture of electric discharge tubes, discharge lamps, or parts thereof are classified in group H01J 9/00.
 H01J
Subclass index
GAS-FILLED TUBES
Without electrode inside; liquid cathode; gaseous cathode; solid cathode 11/00; 13/00; 15/00; 17/00
VACUUM TUBES
Classical tubes: tubes; details 21/00; 19/00
Transit-time tubes: tubes; details 25/00; 23/00
Ion beam tubes 27/00
Cathode ray tubes: tubes; details 31/00; 29/00
X-ray tubes 35/00
TUBES FOR PROCESSING OR EXAMINATION OF MATERIALS OR OBJECTS 37/00
SPECIAL TUBES
For emergence of electrons or ions; particle spectrometers or separator tubes 33/00; 49/00
Vacuum gauges, evacuation by ion diffusion; secondary-emission tubes, electron multipliers; thermionic generators 41/00; 43/00; 45/00
Photoelectric; radiation and particle detectors 40/00; 47/00
DISCHARGE LAMPS
Gas discharge lamps; cathode ray or electron stream lamps; without electrode inside 61/00; 63/00; 65/00
DETAILS
Electrodes; electron optics; vessels; other details 1/00; 3/00; 5/00; 7/00
MANUFACTURE; REPAIR; REGENERATION; RECOVERY OF MATERIAL 9/00
SUBJECT MATTER NOT PROVIDED FOR IN OTHER GROUPS OF THIS SUBCLASS 99/00

 H01K
ELECTRIC INCANDESCENT LAMPS (details or apparatus or processes for manufacture applicable to both discharge devices and incandescent lamps H01J; light sources using a combination of incandescent and other types of light generation H01J 61/96, H05B 35/00; circuits therefor H05B)
 H01K

Note(s)

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

  • "lamp" includes tubes emitting ultra-violet or infra-red light.

 H01K
Subclass index
CHARACTERISED BY UTILISATION
General lighting; other lighting 5/00; 7/00
CHARACTERISED BY THE INCANDESCENT BODY
Non-conductive; non-conductive in the cold state; multiple 11/00; 13/00; 9/00
DETAILS 1/00
MANUFACTURE 3/00

 H01L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR (conveying systems for semiconductor wafers B65G 49/07; use of semiconductor devices for measuring G01; details of scanning-probe apparatus, in general G12B 21/00; resistors in general H01C; magnets, inductors, transformers H01F; capacitors in general H01G; electrolytic devices H01G 9/00; batteries, accumulators H01M; waveguides, resonators, or lines of the waveguide type H01P; line connectors, current collectors H01R; stimulated-emission devices H01S; electromechanical resonators H03H; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R; electric light sources in general H05B; printed circuits, hybrid circuits, casings or constructional details of electrical apparatus, manufacture of assemblages of electrical components H05K; use of semiconductor devices in circuits having a particular application, see the subclass for the application)  [2]
 H01L

Note(s)

  1. This subclass covers:
    • electric solid state devices which are not covered by any other subclass and details thereof, and includes: semiconductor devices adapted for rectifying, amplifying, oscillating or switching; semiconductor devices sensitive to radiation; electric solid state devices using thermoelectric, superconductive, piezo-electric, electrostrictive, magnetostrictive, galvano-magnetic or bulk negative resistance effects and integrated circuit devices; [2]
    • photoresistors, magnetic field dependent resistors, field effect resistors, capacitors with potential-jump barrier, resistors with potential-jump barrier or surface barrier, incoherent light emitting diodes and thin-film or thick-film circuits; [2]
    • processes and apparatus adapted for the manufacture or treatment of such devices, except where such processes relate to single-step processes for which provision exists elsewhere. [2]
  2. In this subclass, the following terms or expressions are used with the meaning indicated:
    • "wafer" means a slice of semiconductor or crystalline substrate material, which can be modified by impurity diffusion (doping), ion implantation or epitaxy, and whose active surface can be processed into arrays of discrete components or integrated circuits; [8]
    • "solid state body" means the body of material within which, or at the surface of which, the physical effects characteristic of the device occur. In thermoelectric devices, it includes all materials in the current path.
    Regions in or on the body of the device (other than the solid state body itself), which exert an influence on the solid state body electrically, are considered to be "electrodes" whether or not an external electrical connection is made thereto. An electrode may include several portions and the term includes metallic regions which exert influence on the solid state body through an insulating region (e.g. capacitive coupling) and inductive coupling arrangements to the body. The dielectric region in a capacitive arrangement is regarded as part of the electrode. In arrangements including several portions, only those portions which exert an influence on the solid state body by virtue of their shape, size, or disposition or the material of which they are formed are considered to be part of the electrode. The other portions are considered to be "arrangements for conducting electric current to or from the solid state body" or "interconnections between solid state components formed in or on a common substrate", i.e. leads; [2]
    • "device" means an electric circuit element; where an electric circuit element is one of a plurality of elements formed in or on a common substrate it is referred to as a "component"; [2]
    • "complete device" is a device in its fully assembled state which may or may not require further treatment, e.g. electroforming, before it is ready for use but which does not require the addition of further structural units; [2]
    • "parts" includes all structural units which are included in a complete device; [2]
    • "container" is an enclosure forming part of the complete device and is essentially a solid construction in which the body of the device is placed, or which is formed around the body without forming an intimate layer thereon. An enclosure which consists of one or more layers formed on the body and in intimate contact therewith is referred to as an "encapsulation"; [2]
    • "integrated circuit" is a device where all components, e.g. diodes, resistors, are built up on a common substrate and form the device including interconnections between the components; [2]
    • "assembly" of a device is the building up of the device from its component constructional units and includes the provision of fillings in containers. [2]
  3. In this subclass, both the process or apparatus for the manufacture or treatment of a device and the device itself are classified, whenever both of these are described sufficiently to be of interest. [6]
 H01L
Subclass index
SEMICONDUCTOR DEVICES
Devices adapted for rectifying, amplifying, oscillating, or switching 29/00
Devices sensitive to, or emitting, radiation 31/00, 33/00
SOLID STATE DEVICES USING ORGANIC MATERIALS 51/00
OTHER SOLID STATE DEVICES
Thermoelectric or thermomagnetic devices 35/00, 37/00
Superconductive or hyperconductive devices 39/00
Piezo-electric, electrostrictive or magnetostrictive elements in general 41/00
Galvano-magnetic devices 43/00
Devices without a potential-jump or a surface barrier; bulk negative resistance effect devices; devices not otherwise provided for 45/00; 47/00; 49/00
ASSEMBLIES OF SEMICONDUCTOR OR OTHER SOLID STATE DEVICES
Assemblies of individual devices 25/00
Integrated circuits 27/00
DETAILS 23/00
MANUFACTURE 21/00

 H01M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY (electrochemical processes or apparatus in general C25; semiconductor or other solid state devices for converting light or heat into electrical energy H01L, e.g. H01L 31/00, H01L 35/00, H01L 37/00)  [2]
 H01M

Note(s)

  1. This subclass covers galvanic primary or secondary cells or batteries, fuel cells or batteries.
  2. Processes using enzymes or micro-organisms in order to:
    1. liberate, separate or purify a pre-existing compound or composition, or to
    2. treat textiles or clean solid surfaces of materials
    are further classified in subclass C12S.  [5]
 H01M
Subclass index
CELLS ACCORDING TO TYPE
Primary cells 6/00
Fuel cells 8/00
Secondary cells 10/00
Hybrid cells; electrochemical generators not provided for otherwise; combinations of different types of electrochemical generators 12/00; 14/00; 16/00
DETAILS COMMON TO DIFFERENT TYPES OF CELLS
Details, processes of manufacture of the non-active parts 2/00
Electrodes 4/00

 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

 H01Q
AERIALS (microwave radiators for near-field therapeutic treatment A61N 5/04; apparatus for testing aerials or for measuring aerial characteristics G01R; waveguides H01P; radiators or aerials for microwave heating H05B 6/72)
 H01Q

Note(s)

  1. This subclass covers:
    • in addition to the primary active radiating elements,
      1. secondary devices for absorbing or for modifying the direction or polarisation of waves radiated from aerials, and
      2. combinations with auxiliary devices such as earthing switches, lead-in devices, and lightning protectors;
    • both transmitting and receiving aerials.  [3]
  2. This subclass does not cover devices of the waveguide type, such as resonators or lines, not designed as radiating elements, which are covered by subclass H01P.
  3. In this subclass, the following expression is used with the meaning indicated:
    • "active radiating element" covers corresponding parts of a receiving aerial.  [3]
 H01Q
Subclass index
TYPES OF AERIALS
Loop type 7/00
Waveguide type 13/00
Other type: short; long 9/00; 11/00
DEVICES FOR INFLUENCING RADIATED WAVES
Quasi-optical; absorbing 15/00; 17/00
COMBINATIONS OF PRIMARY ACTIVE ELEMENTS WITH SECONDARY DEVICES 19/00
COMBINATIONS OF AERIALS WITH ACTIVE CIRCUITS OR CIRCUIT ELEMENTS 23/00
ARRANGEMENTS PROVIDING MORE THAN ONE RADIATION PATTERN 25/00
AERIAL ARRAYS OR SYSTEMS 21/00
SPECIAL ARRANGEMENTS
Details; orientation; simultaneity 1/00; 3/00; 5/00

 H01R
ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS (switches, fuses H01H; coupling devices of the waveguide type H01P 5/00; switching arrangements for the supply or distribution of electric power H02B; installations of electric cables or lines, or of combined optical and electric cables or lines, or of auxiliary apparatus H02G; printed means for providing electric connections to or between printed circuits H05K)
 H01R

Note(s)

  1. This subclass covers:
    • all kinds of contact-making disconnectable and non-disconnectable electric line connecting devices, coupling devices, lamp or similar holders or current collectors for all kinds of electric lines, cables or apparatus;
    • non-printed means for electric connections to or between printed circuits.
  2. This subclass does not cover mounting of connections in or on specified apparatus. Such mounting is covered by the relevant subclass for such apparatus, e.g. mounting in junction or distribution boxes is covered by subclass H02B or H02G, high-temperature connections for heating elements is covered by group H05B 3/08. Structural association of one part of a coupling device with specific electric apparatus is classified with the apparatus, e.g. association of cap with incandescent lamp is covered by subclass H01K.
  3. In this subclass, the following expressions are used with the meaning indicated: [7]
    • "pin" is a rigid or flexible conductor for engagement with an appropriately shaped socket to establish contact therewith; [7]
    • "socket" is a rigid or flexible conductor for receiving an appropriate pin to establish electrical contact therewith; [7]
    • "coupling devices" are devices having two or more parts specially adapted so as to be capable of ready and repeated physical engagement or disengagement, without the use of a tool, for the purpose of establishing or breaking an electrical path. Examples of such devices having more than two parts are: a) adapters for linking two coupling parts; and b) rails or bus-bars provided with a plurality of discrete connecting locations for counterparts. [7]
  4. General details are classified in groups H01R 4/00, H01R 9/00, H01R 11/00, H01R 12/00.
 H01R
Subclass index
CONNECTIONS; CONNECTING ELEMENTS
Direct; Insulation-penetrating 4/00
Structural associations:
of a plurality of mutually-insulated connecting elements 9/00
for printed circuits, flat or ribbon cables 12/00
Individual connecting elements providing two or more spaced connecting locations 11/00
Terminals 9/00; 12/00
Other connections 3/00
COUPLINGS
Direct connections between conductors and conductive members of coupling 4/00
Other details 13/00
Overall structure of two-part couplings 24/00
Coupling parts for multiple or alternative co-operation with counterparts 25/00, 27/00, 29/00
Coupling parts supported by counterpart 31/00
Couplings having holders for supporting apparatus 33/00
FLEXIBLE OR TURNABLE LINE CONNECTORS 35/00
CURRENT COLLECTORS
Rotary; non-rotary 39/00; 41/00
MANUFACTURE 43/00

 H01S
DEVICES USING STIMULATED EMISSION
 H01S

Note(s)

This subclass covers:

  • devices for the generation or amplification, by using stimulated emission, of coherent electromagnetic waves or other forms of wave energy;  [2]
  • such functions as modulating, demodulating, controlling, or stabilising such waves.  [2]

 H01S
Subclass index
MASERS 1/00
SEMICONDUCTOR LASERS 5/00
LASERS OTHER THAN SEMICONDUCTOR LASERS 3/00
OTHER DEVICES USING STIMULATED EMISSION 4/00

 H01T
SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES (working of metal by the action of a high concentration of electric current B23H; welding, e.g. arc welding, electron beam welding or electrolytic welding, B23K; gas-filled discharge tubes with solid cathode H01J 17/00; electric arc lamps H05B 31/00)
 H01T

Note(s)

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

  • "spark gaps" means enclosed or non-enclosed discharge device having cold electrodes and used exclusively to discharge a quantity of electrical energy in a small time duration.  [4]

 H01T
Subclass index
SPARK GAPS
Rotary 7/00
Comprising auxiliary triggering means 2/00
Special adaptations: for oscillations; for rectifiers 9/00; 11/00
Overvoltage arresters; arcing horns 4/00
Other spark gaps 14/00
Details 1/00
SPARKING PLUGS 13/00
CIRCUITS 15/00
DEVICES FOR CORONA DISCHARGE 19/00
MANUFACTURE, MAINTENANCE 21/00
APPARATUS FOR GENERATING IONS 23/00