| IPC 7 English version |
| F42C-F42C02100 |
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| SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| F 42 | AMMUNITION; BLASTING |
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| F 42 C | AMMUNITION FUZES (blasting cartridge initiators F42B 3/10; chemical aspects C06C); ARMING OR SAFETY MEANS THEREFOR (filling fuzes F42B 33/02; fitting or extracting primers in or from fuzes F42B 33/04; containers for fuzes F42B 39/30) [5] |
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| Subclass Index |
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| FUZE-OPERATING PRINCIPLES |
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| Impact |
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| Liquid contact |
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| Fluid pressure |
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| Mechanical force |
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| Non-electric time fuzes |
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| Electric fuzes |
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| Proximity fuzes |
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| Combination fuzes |
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| FUZES CHARACTERISED BY THE TYPE OF AMMUNITION |
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| ARMING OR SAFETY MEANS |
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| FUZE-SETTING |
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| OTHER DETAILS |
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| CHECKING, TESTING |
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1/ | 00 | Impact fuzes, i.e. fuzes actuated only by ammunition impact |
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1/ | 02 | . | with firing pin structurally combined with fuze |
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1/ | 04 | . | . | operating by inertia of members on impact |
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1/ | 06 | . | . | . | for any direction of impact |
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1/ | 08 | . | . | with delayed action after ignition of fuze (time fuzes F42C 9/00) |
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1/ | 09 | . | . | the fuze activating a propulsive charge for propelling the ammunition or the warhead into the air, e.g. in rebounding projectiles [5] |
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1/ | 10 | . | without firing pin |
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1/ | 12 | . | . | with delayed action after ignition of fuze (time fuzes F42C 9/00) |
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1/ | 14 | . | operating at a predetermined distance from ground or target by means of a protruding member |
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3/ | 00 | Fuzes actuated by exposure to a liquid, e.g. sea-water (F42C 5/00 takes precedence; time fuzes F42C 9/00) |
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5/ | 00 | Fuzes actuated by exposure to a predetermined ambient fluid pressure |
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5/ | 02 | . | barometric pressure |
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7/ | 00 | Fuzes actuated by application of a predetermined mechanical force, e.g. tension, torsion, pressure (by ammunition impact F42C 1/00; by exposure to a predetermined ambient fluid pressure F42C 5/00) |
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7/ | 02 | . | Contact fuzes, i.e. fuzes actuated by mechanical contact between a stationary ammunition, e.g. a land mine, and a moving target, e.g. a person (F42C 7/12 takes precedence) |
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7/ | 04 | . | . | actuated by applying pressure on the ammunition head [5] |
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7/ | 06 | . | . | . | and comprising pneumatic or hydraulic retarding means [5] |
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7/ | 08 | . | . | of release type, i.e. actuated by releasing pressure from the ammunition head [5] |
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7/ | 10 | . | . | of antenna type [5] |
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7/ | 12 | . | Percussion fuzes of the double-action type, i.e. fuzes cocked and fired in a single movement, e.g. by pulling an incorporated percussion pin or hammer (percussion caps F42C 19/10) [5] |
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9/ | 00 | Time fuzes; Combined time- and percussion- or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition |
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9/ | 02 | . | the timing being caused by mechanical means |
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9/ | 04 | . | . | by spring motor |
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9/ | 06 | . | . | by flow of fluent material, e.g. shot, fluids |
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9/ | 08 | . | the timing being caused by chemical action, e.g. of acids |
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9/ | 10 | . | the timing being caused by combustion |
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9/ | 12 | . | . | with ring combustion elements |
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9/ | 14 | . | Double fuzes; Multiple fuzes |
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9/ | 16 | . | . | for self-destruction of ammunition |
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9/ | 18 | . | . | . | when the spin rate falls below a predetermined limit, e.g. a spring force being stronger than the locking action of a centrifugally-operated lock [5] |
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11/ | 00 | Electric fuzes (proximity fuzes F42C 13/00; electric igniters F42C 19/12) |
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11/ | 02 | . | with piezo-crystal |
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11/ | 04 | . | with current induction |
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11/ | 06 | . | with time delay by electric circuitry |
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13/ | 00 | Proximity fuzes; Fuzes for remote detonation |
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13/ | 02 | . | operated by intensity of light or similar radiation |
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13/ | 04 | . | operated by radio waves |
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13/ | 06 | . | operated by sound waves |
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13/ | 08 | . | operated by variations in magnetic field |
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14/ | 00 | Fuzes characterised by the ammunition class or type (F42C 1/00, F42C 13/00, F42C 15/00 take precedence) [5] |
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14/ | 02 | . | for hand grenades [5] |
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14/ | 04 | . | for torpedoes, marine mines or depth charges (influenced marine mines F42B 22/04) [5] |
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14/ | 06 | . | for fall bombs [5] |
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14/ | 08 | . | for land mines [5] |
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15/ | 00 | Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges |
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15/ | 16 | . | wherein the firing pin is displaced out of the action line for safety (F42C 15/40 takes precedence) |
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15/ | 18 | . | wherein a carrier for an element of the pyrotechnic or explosive train is moved (F42C 15/40 takes precedence) [5] |
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15/ | 184 | . | . | using a slidable carrier [5] |
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15/ | 188 | . | . | using a rotatable carrier [5] |
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15/ | 192 | . | . | . | rotatable in a plane which is parallel to the longitudinal axis of the projectile [5] |
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15/ | 196 | . | . | . | . | by the action of centrifugal or inertia forces on the carrier body, e.g. the carrier having eccentrically mounted weights or eccentric centre of gravity [5] |
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15/ | 20 | . | wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing pin (F42C 15/40 takes precedence) |
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15/ | 21 | . | . | using spring action (F42C 15/23 takes precedence) [5] |
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15/ | 22 | . | . | using centrifugal force (F42C 15/23 takes precedence) |
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15/ | 23 | . | . | by unwinding a flexible ribbon or tape [5] |
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15/ | 24 | . | wherein the safety or arming action is effected by inertia means (F42C 15/196, F42C 15/20 take precedence) |
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15/ | 26 | . | . | using centrifugal force |
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15/ | 28 | . | operated by flow of fluent material, e.g. shot, fluids (F42C 15/26 takes precedence) |
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15/ | 285 | . | . | stored within the fuze housing [5] |
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15/ | 29 | . | . | operated by fluidic oscillators; operated by dynamic fluid pressure, e.g. ram-air operated [5] |
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15/ | 295 | . | . | operated by a turbine or a propeller; Mounting means therefor [5] |
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15/ | 30 | . | . | of propellant gases, i.e. derived from propulsive charge or rocket motor |
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15/ | 31 | . | . | generated by the combustion of a pyrotechnic or explosive charge within the fuze [5] |
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15/ | 32 | . | operated by change of fluid pressure (F42C 5/00, F42C 15/29 take precedence) |
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15/ | 33 | . | . | by breaking a vacuum or pressure container [5] |
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15/ | 34 | . | wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge (F42C 15/18, F42C 15/40 take precedence) |
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15/ | 36 | . | wherein arming is effected by combustion or fusion of an element (F42C 15/31 takes precedence) |
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15/ | 38 | . | wherein arming is effected by chemical action (F42C 3/00 takes precedence) |
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15/ | 40 | . | wherein the safety or arming action is effected electrically |
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15/ | 42 | . | . | from a remote location, e.g. for controlled mines or mine fields [5] |
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15/ | 44 | . | Arrangements for disarming, or for rendering harmless, fuzes after arming, e.g. after launch [5] |
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17/ | 00 | Fuze-setting apparatus |
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17/ | 02 | . | Fuze-setting keys |
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17/ | 04 | . | for electric fuzes [5] |
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19/ | 00 | Details of fuzes (other parts F42C 15/00) |
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19/ | 02 | . | Fuze bodies; Fuze housings |
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19/ | 04 | . | Protective caps |
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19/ | 06 | . | Electric contact parts specially adapted for use with electric fuzes |
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19/ | 07 | . | . | Nose-contacts for projectiles or missiles [5] |
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19/ | 08 | . | Primers (initiators for blasting cartridges F42B 3/10); Detonators |
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19/ | 085 | . | . | Primers for caseless ammunition [5] |
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19/ | 09 | . | . | Primers or detonators containing a hollow charge [5] |
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19/ | 095 | . | . | Arrangement of a multiplicity of primers or detonators, dispersed around a warhead, one of the primers or detonators being selected for directional detonation effects [5] |
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19/ | 10 | . | . | Percussion caps |
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19/ | 12 | . | . | electric |
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19/ | 14 | . | . | . | operable also in the percussion mode [5] |
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21/ | 00 | Checking fuzes; Testing fuzes |
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