CPC Definition - Subclass F42B

Last Updated Version: 2023.08
EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D)
Definition statement

This place covers:

This subclass covers all mechanical and materials aspects of ammunition of all calibres, explosive charges, fireworks, non-firearm projectiles/missiles.

It also covers the aspects of manufacturing, destructions, dismantling, testing and packaging of ammunition.

It further covers accessories for use with ammunition not elsewhere classified.

The classification is generally only based on structural and functional aspects, irrespective of caliber scaling/sizing.

Relationships with other classification places

C06B: Chemical aspects of explosives, explosive compositions

C06C: Chemical aspects of primers and detonators

References
Limiting references

This place does not cover:

Chemical aspects of explosives, explosive compositions

C06B

Fuzes

F42C

Blasting

F42D

Special rules of classification

The following IPC groups are not used in the CPC. Subject matter covered by these groups is classified in the following CPC groups:

Glossary of terms

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

Primer

effects the first explosive step in the sequence of explosion

Percussion cap

means a primer which is struck to explode

Igniter

effects the first spark-producing or heat-producing step but may not be explosive

Firing-means or initiator (used respectively in the arts of weaponry and blasting)

means a device acting directly on the primer, which device may or may not form part of the fuze

Detonator or detonator charge

means a charge used to amplify the explosion of the primer

Fuze

means an assembly or mechanism which incorporates safety and arming means in order that the explosion can only take place under certain conditions; this assembly or mechanism determines also the moment (instantaneous or delayed) or the manner, e.g. impact, proximity, hydrostatic pressure, of the firing;

Ammunition

covers propulsive charge and projectile whether or not forming a single body, unless otherwise made clear

Projectile, missile or projectile or missile

means any body which is projected or propelled;

Guided missile

means projectile or missile which is guided during at least part of its trajectory;

Rocket

means projectile or missile which is self-propelled, during at least part of its trajectory, by a rocket engine, i.e. by a jet-propulsion engine carrying both fuel and oxidant therefor

Fuse or fuse cord

means a continuous train of explosive enclosed in a usually flexible cord or cable for setting-off an explosive charge in the art of blasting.

Explosive charges characterised by form or shape but not dependent on shape of container
Definition statement

This place covers:

Configuration, shape, manufacturing processes of explosive charges per se.

Shaped charges forming explosively formed projectiles or jets.

Shaped or hollow charges (blasting cartridges with cavities in the charge F42B 3/08; oil winning using shaped-charge perforators E21B 43/116)
Definition statement

This place covers:

A hollow charge is a container filled with an explosive at least one side of the explosive having a concave hollow, which collapses upon detonation, the detonation of the explosive being initiated at the side opposite of the hollow. The hollow may be conical in shape to produce a jet or hemi-spherical to produce a projectile. The hollow is usually delimited by a liner.

A more generic shaped charge may have a convex active surface with an optional liner.

References
Informative references

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

Blasting cartridges with cavities in the charge

F42B 3/08

Warhead including a hollow charge

F42B 12/10

Linear cutting with shaped charges

B26F 3/04

Oil winning using shaped-charge perforators

E21B 43/116

Glossary of terms

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

Liner

thin metal layer, usually made of metal, disposed on the concave part of the hollow charge which is formed into a particle jet or an explosively formed projectile upon detonation of the charge

Synonyms and Keywords

In patent documents, the following abbreviations are often used:

EFP

Explosively formed projectile

provided with embedded bodies of inert material
References
Limiting references

This place does not cover:

Detonation wave guides in blasting cartridges

F42B 1/024

Blasting cartridges, i.e. case and explosive (fuse cords, e.g. detonating fuse cords C06C 5/00; chemical aspects of detonators, blasting caps or primers C06C 7/00)
Definition statement

This place covers:

Includes blasting cartridges per se, i.e. the assembly of an outer protecting case containing a predefined amount of explosive, ready for the use in blasting operation. Usually the case has a provision for inserting or attaching an initiator or detonator.

Further inlcudes initiators for the blasting cartridges and means for mounting the initator to the blasting cartridge.

Also included are detonation wave guides in blasting cartridges and explosive bolts.

Also includes means for initiation or detonation.

Includes gas generators and explosive bolts.

References
Limiting references

This place does not cover:

Detonation wave guides in hollow charges

F42B 1/024

Fuse cords, e.g. detonating fuse cords

C06C 5/00

Chemical aspects of detonators, blasting caps or primers

C06C 7/00

Time fuzes

F42C 9/00

Electric time fuzes

F42C 11/06

Primers

F42C 19/08

Relative timing of multiple charges

F42D 1/06

for producing gas under pressure {(generators of inflation fluid especially adapted for vehicle air bags B60R 21/26)}
References
Informative references

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

Gas generators for airbags

B60R 21/26

Steam generators

F22B 1/18

with cavities in the charge, e.g. hollow-charge blasting cartridges
References
Informative references

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

Details of hollow charges and hollow charges

F42B 1/02

Mounting initiator heads in initiators; Sealing-plugs
Definition statement

This place covers:

Includes anchoring pins or electric lead wires in a sealing plug.

References
Limiting references

This place does not cover:

Coating a bridgewire or other initiating element with primary ignition compound or substance

F42B 3/198

Manufacture
References
Informative references

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

Anchoring pins or electric lead wires in a sealing plug

F42B 3/103

Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes (signalling by explosives G08B; advertising by fireworks G09F 13/46; {signalling by pyrotechnics in railway systems B61L 5/20})
Definition statement

This place covers:

Includes all mechanical aspects of fireworks for amusement purposes.

References
Informative references

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

Signalling by pyrotechnics in railway systems

B61L 5/20

Signalling by explosives;

G08B

Advertising by fireworks

G09F 13/46

Special rules of classification

The only defence aspect in this main group is in the flares in F42B 4/26 for signalling, illuminating and as leurres/decoys.

characterised by having holder or support other than casing, e.g. whirler or spike support {(supports for flares or torches F42B 4/26)}
Definition statement

This place covers:

Includes containers for fireworks that serve as packaging for storage and transport and also serve as launch units.

References
Informative references

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

Supports for flares or torches

F42B 4/26

Packaging of ammunition

F42B 39/00

Flares; Torches {(mines for practice or training containing flares or illuminating charges F42B 8/28; projectiles of illuminating type F42B 12/42)}
Definition statement

This place covers:

Flares for signalling, illuminating and as leurres/decoys.

Flares consisting of stacked platelets or disc shaped pellets use "platelets".

Flares consisting of elongated packages filled with slow burning chemical compositions with high electromagnetic spectrum output that burn down from one end as torches.

References
Informative references

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

Mines for practice or training containing flares or illuminating charges

F42B 8/28

Projectiles of illuminating type

F42B 12/42

Incendiary projectile

F42B 12/44

Cargo projectiles spreading chaff or infrared emitters

F42B 12/70

Active targets

F41J 2/02

Cartridge ammunition, e.g. separately-loaded propellant charges (shotgun ammunition F42B 7/00; practice or training ammunition F42B 8/00; missiles therefor F42B 12/00, F42B 14/00, F42B 15/00)
Definition statement

This place covers:

A cartridge is traditionally considered to be the combination of projectile, propellant, primer and cartridge case into a single unit. This subclass further includes caseless ammunitions, i.e. a unit comprising a formed propellant, primer and projectile without a case. This main group covers all the cartridged ammunitions except for the shotgun ammunitions, which are covered in F42B 7/00.

Also comprises separately packaged propellant charges for artillery gun.

References
Informative references

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

Caseless ammunition

F42B 5/182

Shotgun ammunition

F42B 7/00

Practice or training ammunition

F42B 8/00

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels

F42B 14/00

Self-propelled projectiles or missiles, e.g. rockets; Guided missiles

F42B 15/00

Glossary of terms

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

Case

container for housing propellant charge, primer and missile

Cartridge

case containing propellant charge(s), primer(s) and missile(s); formed propellant with missile and primer

Synonyms and Keywords

In patent documents, the following words/expressions are often used with the meaning indicated:

"missile"

"projectile", "bullet", "grenade", "warhead", "shell", "slug".

"cartridge "

" round of ammunition ".

Cartridges, i.e. cases with charge and missile
References
Informative references

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

Caseless ammunition

F42B 5/182

{characterised by the dimension of the case or the missile}
Definition statement

This place covers:

Includes identification markings on case or projectile.

{the cartridge or barrel assembly having a plurality of axially stacked projectiles each having a separate propellant charge}
Definition statement

This place covers:

Roman candle type guns, e.g. Metal Storm type.

modified for electric ignition
Definition statement

This place covers:

Includes optical ignition.

characterised by composition or physical dimensions or form of propellant charge, {with or without projectile,} or powder (chemical composition C06B; {F42B 5/24 takes precedence})
References
Limiting references

This place does not cover:

Cartridges for cleaning; for cooling; for lubricating; for wear reducing

F42B 5/24

Informative references

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

Caseless ammunition

F42B 5/182

Chemical composition

C06B

Separately-loaded propellant charges, e.g. cartridge bags {(F42B 5/16, F42B 5/192 take precedence)}
References
Limiting references

This place does not cover:

Cartridges characterised by composition or physical dimensions or form of propellant charge, with or without projectile, or powder

F42B 5/16

Cartridge cases characterised by the material of the casing wall

F42B 5/192

Informative references

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

Increment charges for mortar projectiles (horse - shoe)

F42B 30/12

Projectiles or missiles specially adapted for projection without use of explosive or combustible propellant charge, e.g. for blow guns, bows or crossbows, hand-held spring or air guns (for delivering hypodermic charges F42B 12/54; projectiles or missiles incorporating springs as the projecting means F41B 7/02; {Arrows or darts for dispensing materials, for producing chemical or physical reaction, or for signalling F42B 12/362})
Definition statement

This place covers:

All projectiles or missiles which are not propelled from a firearm, i.e. not propelled by the combustion of a propellant in the cartridge chamber of a firearm's barrel, including darts, arrows, crossbow bolts, harpoons, fish spears, airgun pellets, paint balls, throwing stars or other non-standard-dart sharp throwing objects excluding knives and axes.

References
Informative references

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

Projectiles or missiles incorporating springs as the projecting means

F42B 7/02

Arrows or darts for dispensing materials, for producing chemical or physical reaction, or for signalling

F42B 12/362

Projectiles for delivering hypodermic charges

F42B 12/54

{Darts}
Definition statement

This place covers:

Includes throwing stars or other non-standard-dart sharp throwing objects excluding knives and axes.

References
Informative references

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

Throwing knives

F42B 15/00

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "shuriken"," throwing star" and " ninja star"
Arrows; Crossbow bolts; Harpoons for hand-held spring or air guns
References
Informative references

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

Arrows or darts for dispensing materials or for producing chemical or physical reaction

F42B 12/362

Fishing spears

A01K 81/04

Fletching jigs

F41B 5/1446

Arrow heads; Harpoon heads
Special rules of classification

Includes suction cup or soft tip safety tips for arrows and darts.

Shotgun ammunition
Definition statement

This place covers:

All projectiles or missiles specially adapted to be fired from a smooth bore shotgun barrel for shot pellets or from a rifled shotgun barrel for slugs. In literature a difference between birdshot and buckshot is made, however in the classification scheme these difference in shot dimension is not taken into account, i.e. bird- and buckshot will be both classified under F42B 7/04.

References
Informative references

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

Materials for pellets

F42B 12/72

Practice or training ammunition
Definition statement

This place covers:

Ammunition either devoid of - or with strongly reduced - propellant energy or warhead energy, in order to enable safe and cost-efficient weapon's training, i.e. including inert or dummy ammunition and reduced energy ammunition.

Cartridges {(F41A 33/02, F42B 7/12 take precedence)}
References
Limiting references

This place does not cover:

Cartridge top closures, i.e. for the missile side

F42B 7/12

Light- or radiation-emitting guns; Light- or radiation-sensitive guns; Cartridges carrying light emitting sources, e.g. laser

F41A 33/02

Informative references

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

Range reducing means

F42B 10/48

Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding (F42B 6/00 takes precedence)
Definition statement

This place covers:

Mechanical means for influencing, temporarily or constantly the aerodynamic properties of a projectile or missile or otherwise change its trajectory, i.e. the means physically influencing the projectile or missile to change behaviour. The influence being either the change of trajectory of the projectile or missile by intentional steering through remote control or on board control, the steering being effected with flight surfaces, thrust vector control or centre of gravity displacement. Alternatively the influence being the range increasing or the projectile or missile with aerodynamic means such as streamlined projectiles or lift inducing flight surfaces. Alternatively the influence could be the range reducing of the projectiles with aerodynamic spoilers or similar means. Alternatively the influence could be the fall retarding means, like parachutes or rotochutes, either with dropped warheads or in the final descent of the parabolic flight of a projectile.

References
Limiting references

This place does not cover:

Projectiles or missiles specially adapted for projection without use of explosive or combustible propellant charge, e.g. for blow guns, bows or crossbows, hand-held spring or air guns

F42B 6/00

Special rules of classification

The electronic or logic control of the mechanical influencing means of this main group is covered in the groups F41G 7/00.

using spin (F42B 10/04, F42B 10/12, F42B 10/14, F42B 10/24, F42B 14/02 take precedence)
References
Limiting references

This place does not cover:

Stabilising arrangements using fixed fins

F42B 10/04

Stabilising arrangements using fins longitudinally-slidable with respect to the projectile or missile

F42B 10/12

Stabilising arrangements using fins spread or deployed after launch, e.g. after leaving the barrel

F42B 10/14

Projectiles of cannelured type with inclined grooves

F42B 10/24

Driving bands; Rotating bands

F42B 14/02

Means for imparting spin to the rocket before launching

F41F 3/048

Streamlined nose cones; Windshields; Radomes {(F42B 12/105 takes precedence)}
References
Limiting references

This place does not cover:

Protruding target distance or stand-off members therefor, e.g. slidably mounted

F42B 12/105

Informative references

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

Protection against overheating or radiation, e.g. heat shields

F42B 15/34

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material (F42B 6/00, F42B 10/00, F42B 14/00 take precedence; for practice or training F42B 8/12, F42B 8/28; self-propulsion or guidance aspects F42B 15/00)
Definition statement

This place covers:

The warheads of self-propelled missiles and rockets as well as projectiles which are not self propelled (F42B 15/00) are classified according to two major aspects, i.e. their intended effect (F42B 12/02-F42B 12/72) and the material of the projectile (F42B 12/74-F42B 12/82). In this whole main group, the ammunition is classified according to functional features.

References
Limiting references

This place does not cover:

Projectiles or missiles specially adapted for projection without use of explosive or combustible propellant charge, e.g. for blow guns, bows or crossbows, hand-held spring or air guns

F42B 6/00

Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding

F42B 10/00

Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels

F42B 14/00

Informative references

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

Projectiles or missiles for practice or training

F42B 8/12

Land or marine mines for practice or training; Depth charges for practice or training

F42B 8/28

Self-propelled projectiles or missiles, e.g. rockets; Guided missiles

F42B 15/00

Special rules of classification

In this main group classification is performed disregarding parameters such as calibres, weight and dimensions.

In case of multi-role, multiple purpose, multi-aspect or multiple warhead ammunition, classification in more than one group may be necessary.

{Projectiles transmitting information to a remote location using optical or electronic means (F42B 12/385 takes precedence)}
References
Limiting references

This place does not cover:

Tracer projectiles emitting an electromagnetic radiation, e.g. laser beam or infrared emission

F42B 12/382

Informative references

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

Missiles or projectiles for carrying measurement instruments

F42B 15/08

Projectiles with sensors, antennas or target trackers

F42B 30/006

of tracer type
Definition statement

This place covers:

Tracer projectiles by means of radiation caused by pyrotechnical compositions.

References
Informative references

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

Tracing by optical, electronic or optronic means

F42B 12/382

of target-marking, i.e. impact-indicating type (F42B 12/48, {F42B 12/50} take precedence)
Definition statement

This place covers:

Includes marking with paint, e.g. paintball or with smoke or similar liquid or powdery substances.

References
Limiting references

This place does not cover:

Smoke producing projectiles

F42B 12/48

Projectiles for dispensing gases, vapours, powders or chemically-reactive substances by dispersion

F42B 12/50

Informative references

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

Separately kept chemo-luminescant chemicals mixed upon bursting, e. g. on impact

C09K 11/00

of illuminating type, e.g. carrying flares
Definition statement

This place covers:

Includes flash-bang hand grenades.

References
Informative references

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

Flares for signalling

F42B 4/26

Parachute flares

F42B 4/28

Special rules of classification

Double classify flash-bangs hand grenades in F42B 27/00.

of incendiary type (F42B 12/46 takes precedence)
References
Limiting references

This place does not cover:

Projectiles for dispensing gases, vapours, powders or chemically-reactive substances

F42B 12/46

Informative references

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

Fuel-air explosive devices
Definition statement

This place covers:

Thermobaric warheads, i.e. destruction though synergetic effect of excessive heat, pressure.

Chain-shot, i.e. the submissiles being interconnected by chains or the like {(ballistically deployed systems for restraining persons or animals F41H 13/0006)}
References
Informative references

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

Aerial barrages

F41H 11/04

Ballistically deployed restraining systems

F41H 13/0006

Line-carrying missiles, e.g. for life-saving (harpoons F42B 30/14 {, mine-clearing snakes F41H 11/14})
References
Limiting references

This place does not cover:

Chain shot projectiles

F42B 12/66

Harpoons

F42B 30/14

Mine-clearing snakes

F41H 11/14

Informative references

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

Deploying of guidance wire or (optical) fibres from wire guided missile

F42B 15/04

Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
Definition statement

This place covers:

Includes the means for guiding the projectiles with nominal calibre inside the barrel with one ore more malleable driving bands around the periphery of the projectile.

Also includes obturators for sealing the projectile so that no propellant gas leaks around the projectile.

Further includes coatings on projectiles with provisions for lubricating, i.e. reducing the friction between the barrel and the projectile.

Also includes all the sub-calibre projectiles, in particular the means for guiding them inside the normal calibre barrel, such as obturator plates and sabots.

Self-propelled projectiles or missiles, e.g. rockets; Guided missiles (F42B 10/00, F42B 12/00, F42B 14/00 take precedence; for practice or training F42B 8/12; rocket torpedoes F42B 17/00; marine torpedoes F42B 19/00; cosmonautic vehicles B64G; jet-propulsion plants F02K)
Definition statement

This place covers:

This main group covers all the missiles and projectiles with their own propulsion system and/or guidance system. The rockets and missiles must have at least part of their trajectory in the air.

These self-propelled missiles main group is structured according to the following aspects:

Mechanical and integrated arrangements for guidance or control mounted on the missile.

Their application without warhead (measurement instruments carriers)

The medium they are designed for (air or water and air).

Functional features such as heat shields/cooling arrangements and multi-stage rocket connectors and/or disconnectors.

References
Limiting references

This place does not cover:

Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding

F42B 10/00

Stabilising of missiles

F42B 10/02

Steering of missiles

F42B 10/66

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels

F42B 14/00

Rocket torpedo

F42B 17/00

Marine torpedoes

F42B 19/00

Electronic or logic guidandce and control of missiles

F41G 7/00

Informative references

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

Projectiles or missiles for practice or training

F42B 8/12

Cosmonautic vehicles

B46G

Jet-propulsion plants

F02K

Special rules of classification

The only exception of missiles and projectiles with their own propulsion system and/or guidance system not covered in this main group are the rocket torpedoes, which are covered in F42B 17/00.

using wire, e.g. for guiding ground-to-ground rockets
References
Informative references

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

Umbilical connections for rockets

F41F 3/055

for carrying measuring instruments; {Arrangements for mounting sensitive cargo within a projectile} (adaptations for meteorology G01W 1/08); {Arrangements for acoustic sensitive cargo within a projectile}
References
Informative references

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

Projectiles for transmitting signals to a remote location

F42B 12/365

Projectiles with antennas and sensors

F42B 30/006

Adaptations for meteorology

G01W 1/08

Protection against overheating or radiation, e.g. heat shields; Additional cooling arrangements {(thermal protection fitted in or to cosmonautic vehicles B64G 1/58)}
References
Informative references

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

Windshields & radomes

F42B 10/46

Thermal protection fitted in or to cosmonautic vehicles

B64G 1/58

Means for interconnecting rocket-motor and body section; Multi-stage connectors; Disconnecting means
References
Informative references

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

Systems for coupling or separating cosmonautic vehicles or parts

B64G 1/64

Rocket torpedoes, i.e. missiles provided with separate propulsion means for movement through air and through water (F42B 12/00 takes precedence)
Definition statement

This place covers:

A rocket torpedo is a special case of a self-propelled projectile or missile.

References
Limiting references

This place does not cover:

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Marine torpedoes

F42B 19/00

Special rules of classification

Guidance aspects and specific structural aspects need to be classified in F42B 15/00 if applicable.

If relevant, documents containing details relating to the underwater trajectory should also be classified in any of the subgroups F42B 19/005 (nose caps etc.), F42B 19/01, F42B 19/04, F42B 19/06, F42B 19/08, F42B 19/10 (steering control aspects).

Marine torpedoes, e.g. launched by surface vessels or submarines (having additional propulsion means for movement through air F42B 17/00); Sea mines having self-propulsion means (F42B 12/00 takes precedence; launching means F41F; locating by use of radio or other waves G01S; automatic control of course G05D 1/00; firing directors or calculators G06G)
Definition statement

This place covers:

All aspects relating to torpedo, i.e. self-propelled and/or guided missile with a trajectory mainly under water, they may be lauched from surface vessels or aircraft, however their auto-propulsion system is designed for underwater use.

References
Limiting references

This place does not cover:

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Informative references

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

Rocket torpedoes

F42B 17/00

Launching means

F41F

Torpedo launchers

F41F 3/08

Fuzes for torpedoes

F42C 14/04

Locating by use of radio or other waves

G01S

Automatic control of course

G05D 1/00

Firing directors or calculators

G06G

Special rules of classification

References F42B 17/00; F41F, G01S, G05D 1/00 and G06G are non-limiting in the main group F42B 19/00. CPC will be updated/corrected once this inconsistency is resolved.

remotely controlled, e.g. by sonic or radio control (control systems using wire F41G 7/32)
References
Informative references

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

Control systems using wire

F41G 7/32

Special rules of classification

Looping references between F42B 19/10 and F41G 7/00 have been identified. Until this inconsistency is resolved, the current classification practice in CPC is as follows:

  • If a marine torpedo-related document discloses aspects of remote control by wire, then it should be classified in F41G 7/32
  • If it contains also aspects of remote control other than by wire, then it should be classified also in F42B 19/10 to account for those aspects.
  • Reference F41G 7/32 is currently defined as non-limiting in the subgroup F42B 19/10.
Depth charges (F42B 12/00 takes precedence; for practice or training F42B 8/28; laying aspects B63G)
Definition statement

This place covers:

Anti-submarine warfare (ASW) weapon intended to destroy or cripple a target submarine by the shock of exploding near it. Most use explosives and a fuze set to go off at a preselected depth in the ocean. Depth charges can be dropped by either surface ships, patrol aircraft, or from helicopters.

References
Limiting references

This place does not cover:

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Informative references

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

Depth charges for practice or training

F42B 8/28

Laying aspects

B63G

Fuzes for depth charges

F42C 14/04

Marine mines, e.g. launched by surface vessels or submarines (F42B 12/00 takes precedence; for practice or training F42B 8/28; mine laying or sweeping B63G)
Definition statement

This place covers:

A marine mine is a self-contained explosive device placed in water to destroy surface ships or submarines. Mines are deployed from ships, submarines and aircraft and usually left unattended until they are triggered by the approach of, or contact with, an enemy vessel. Marine mines can be used offensively—to hamper enemy shipping movements or lock vessels into a harbour; or defensively—to protect friendly vessels and create "safe" zones.

The main group is organised according to the functionality or the mine, the deployments aspects, tactical aspects and detail structural features.

References
Limiting references

This place does not cover:

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Informative references

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

Marine mines for practice and training

F42B 8/28

Marine mine laying or sweeping

B63G

Fuzes for marine mines

F42C 14/04

Remote controlled mine fields

F42C 15/42

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • " Marine mine " and " naval mine"
Land mines {; Land torpedoes} (F42B 12/00 takes precedence; for practice or training F42B 8/28)
Definition statement

This place covers:

A land mine is a self-contained explosive device placed on the ground or buried under the ground with the intention to destroy ground vehicles or harm infantrymen. Mines are deployed manually according to a very detailed planned pattern or scattered from minelaying vehicles of cargo ammunitions and usually left unattended until they are triggered by the approach of, or contact with, a vehicle or a person.

References
Limiting references

This place does not cover:

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Informative references

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

Land mines for practice and training

F42B 8/28

Ballistically deployed restraining systems

F41H 13/0006

Fuzes for mines

F42C 14/08

Special rules of classification

Since the entry into force of the ottawa treaty internationally banning land mines, the amount of new patent applications aimed at anti-personel mines is negligible and the groups F42B 23/10 and lower are stagnant. However non-lethal anti-personel devices for perimeter restrictions using electical stun technology, repellants or electromagnetic fields are classified in F42B 23/10 for their tactical similarity.

Fall bombs (F42B 10/00, F42B 12/00 take precedence; for practice or training F42B 8/12 {; gliding type bombs F42B 15/105})
Definition statement

This place covers:

A conventional aircraft-delivered bomb that does not contain a guidance system and hence, simply follows a gravitationally imposed ballistic trajectory.

References
Limiting references

This place does not cover:

Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding

F42B 10/00

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Informative references

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

Bombs for practice and training

F42B 8/12

Air torpedoes, e.g. projectiles with or without propulsion, provided with supporting air foil surfaces, gliding bombs

F42B 15/105

Hand grenades (F42B 12/00 takes precedence; for practice or training F42B 8/12)
Definition statement

This place covers:

A conventional hand grenade is an explosive device with an explosive charge, an enclosing casing and a initiator arrangement, adapted to be thrown by hand. Traditionally the grenade has timing means to delay detonation until the grenade is sufficiently remote from the person throwing it. Embodiments with impact fuzes or the like are exceptions. Furthermore the casing of the grenade can be designed so as to create splinters upon detonation.

The explosive charge is meant to cause blast (offensive grenade) and/or spread fragments (defensive grenades).

This main group also includes non-lethal hand grenades or hand grenades with reduced lethality, such as flash-bang or stun grenades.

Finally smoke/gas/incendiary/illuminating grenades specially adapted to be thrown by hand are included in this main group.

References
Limiting references

This place does not cover:

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Informative references

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

Hand grenades for practice and training

F42B 8/12

Fuzes for hand grenades

F42C 14/02

Special rules of classification

Smoke/gas/incendiary/illuminating/flash-bang grenades specially adapted to be thrown by hand must be double classified in F42B 12/00 or F41H 13/00 for their functional and intended effect features.

Noiseless, smokeless, or flashless missiles launched by their own explosive propellant
References
Informative references

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

Telescopic cartridges

F42B 5/045

Telescopic caseless cartridges

F42B 5/184

Special rules of classification

Cartridged ammunition with means for retaining the residues of their propellant after its consumption in a sealed chamber or compartment to avoid any audible or visible indication of a shot being fired except for the launched projectile.

Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used (F42B 10/00, F42B 12/00, F42B 14/00 take precedence)
Definition statement

This place covers:

In this main group ammunition is mainly classified according to the launcher the ammunition is made to be launched from, i.e. bullets (for smallarms), grenades for launching form a rifle or specifically made for ordnance like mortars (larger calibre guns) and pyrotechnically launched (not hand held) harpoons.

Further this main group has two detail entries for structural details not covered anywhere else, i.e. closures or base plates of projectiles and sensor mounts on projectiles.

References
Limiting references

This place does not cover:

Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding

F42B 10/00

Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material

F42B 12/00

Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels

F42B 14/00

Special rules of classification

Ammunition specially adapted for a specific launcher not listed in this main group need to be classified in the main group F42B 30/00.

In general, documents classified in the groups according to the launchers, i.e. F42B 30/02-F42B 30/14, should be double classified in F42B 5/00-F42B 29/00 according to the structural or functional features , e.g. materials for the projectile body or jackets F42B 12/72.

{Mounting of sensors, antennas or target trackers on projectiles}
References
Informative references

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

Projectiles transmitting information to a remote location using optical or electronic means

F42B 12/365

Arrows transmitting information to a remote location

F42B 12/385

Missiles carrying instruments

F42B 15/08

Bullet traps or bullet decelerators therefor
References
Informative references

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

Attachments for guns for firing blank cartridges

F41A 21/26

Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor (F42B 5/188 takes precedence; manufacturing processes for hollow charges F42B 1/036; manufacture of blasting cartridge initiators F42B 3/195)
Definition statement

This place covers:

Processes and devices for initial manufacturing of an ammunition as well as processes and devices for reconditioning/reusing ammunition or parts of ammunitions.

Also includes processes and devices for dismantling or controlled destruction of unused ammunition.

References
Limiting references

This place does not cover:

Manufacturing processes for hollow charges

F42B 1/036

Manufacture of blasting cartridge initiators

F42B 3/195

Manufacturing processes for caseless ammunition

F42B 5/188

Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs ({F42B 33/004 and} F42B 33/04 take precedence; {elimination of undesirable components of explosives C06B 21/0091})
Definition statement

This place covers:

This group includes the dismantling of ammunition with the aim of avoiding the triggering of a catastrophic detonation, e.g. by chemical bath, deep freezing, incinerator, laser cutting of the mantle.

References
Limiting references

This place does not cover:

Cartridge loaders of the rotatable-turret type

F42B 33/004

Fitting or extracting primers in or from fuzes or charges

F42B 33/04

Rendering explosive charges harmless, destroying ammunition (by exploding within a safety container)

F42D 5/04

Informative references

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

Elimination of undesirable components of explosives

C06B 21/0091

{by combustion (incineration apparatuses or processes for used articles F23G 7/003)}
Definition statement

This place covers:

This class includes destruction of ammunition by combustion in the sense of incineration, i.e. no pressure confinement chambers or detonators are used. The aim is the deflagration at low pressure of the explosive to be destroyed.

Incineration in fluidised bed reactors.

References
Limiting references

This place does not cover:

Rendering explosive charges harmless, destroying ammunition (by exploding within a safety container)

F42D 5/04

Informative references

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

Incineration apparatuses or processes for used articles

F23G 7/003

Testing or checking of ammunition {(apparatus for measuring the energy of projectiles G01L 5/14)}
Definition statement

This place covers:

It includes the testing and checking of ammunition before the use, i.e during manufacturing, during storage or just prior to launch/deployment.

It further inlcudes processes and devices for the forensic testing of smallarms ammunition after an incident or crime.

Also includes firing test batches in specialised testing devices equipped with measuring instruments and/or high speed cameras; specialised testing devices therefore.

References
Informative references

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

Apparatus for measuring the energy of projectiles

G01L 5/14

Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
Definition statement

This place covers:

Packaging of ammunition, e.g. cartridges, projectiles, warheads, rocket engines, fuzes, primers, self-contained propellants, detonators or explosives for safe storage and transport (in vehicle or worn on body).

References
Limiting references

This place does not cover:

Holder for fireworks

F42B 4/20

Informative references

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

Launching apparatus also used as a transport container for rockets

F41F 3/042

Cartridge bags; Bandoleers
Definition statement

This place covers:

Belt or webbing worn ammunition pouches or magazine pouches or speedloader holsters.

Holders for extra ammunition mounted on the outside of a gun or gunstock.

References
Informative references

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

Holders for extra ammunition mounted on the inside of a gun or gunstock

F41C 23/22

Cartridge belts
Definition statement

This place covers:

Means facilitating the feeding of ammunition to automatic firearms, i.e. cartridges carried by a textile band or by carrier units each holding one cartridge, the carrier units being sequentially connected to each other by connecting elements or connected to each other by belt links, each belt link holding one cartridge and embracing the previous or subsequent cartridge.

Includes solid inflexible metal strips or racks acting similar to belts (Hotchkiss type or Japanese Model 01 (1941)or japanese Type 92 HMG).

References
Informative references

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

Bandoleers and waist belts for carrying separate cartridges or magazines including speed loaders or clips

F42B 39/02

Feeding of belted ammunition

F41A 9/29

Explosion or fire protection arrangements on packages or ammunition (F42B 39/20 {and F42B 39/24} take precedence; {wall or panel structure of fireproof safes or storage containers E05G 1/024})
Definition statement

This place covers:

Arrangements for reducing damage effects from the outside environment, e.g. fire, on the ammunition.

References
Limiting references

This place does not cover:

Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable; Blow-out panels; Venting arrangements

F42B 39/20

Shock-absorbing arrangements in packages

F42B 39/24

Informative references

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

Wall or panel structure of fireproof safes or storage containers

E05G 1/024

Safety devices, e. g. to prevent accidental ignition (for rocket engine plants)

F02K 9/38

Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable {; Blow-out panels; Venting arrangements (ventilating arrangements on packages formed from foldable or erectable blanks B65D 5/4295; packages with pressure-relief valves incorporated in a container wall B65D 77/225)}
Definition statement

This place covers:

Venting arrangements including pyrotechnic cutting arrangements

Arrangements for reducing damage to the outside environment caused by unintended activation of the ammunition itself, e.g. pressure or heat build up.

References
Informative references

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

Ventilating arrangements on packages formed from foldable or erectable blanks

B65D 5/4295

Packages with pressure-relief valves incorporated in a container wall

B65D 77/225

Arrangement for preventing, or minimising the effect of, excessive or insufficient pressure (blow-out panels) with weakened parts

B65D 90/36