IT202100003746A1 - MULTIFUNCTIONAL ELECTRONIC FUZZLE WITH EXTENDED AND REINFORCED SAFETY FOR LAND OR MARINE USE WITH TRIPLE SAFETY IN USE, PLUS ONE ACCESSORY, AND TRIPLE TRIGGERING MODE FOR HAND GRENADES AND VARIOUS DETONATING OBJECTS - Google Patents

Description

MULTIFUNCTIONAL ELECTRONIC FUEL WITH EXTENDED AND REINFORCED SAFETY FOR LAND OR MARINE USE WITH TRIPLE SAFETY OF USE, PLUS? AN ACCESSORY, AND TRIPLE MODE? FOR TRIGGERING HAND GRENADES AND VARIOUS DETONATING OBJECTS

How?? well known, Fuzes are used to trigger/detonate any explosive charge of any kind and type, large or small.

There are various types of Spolette on the market, for the most? various civil and military applications mainly of the fire, electric and electronic type.

Here we want to consider a specific application, improving what already exists (but without excluding other possible applications in the civil or military field) and focused on the use of common Hand Grenades/Hand Grenades of all kinds and types, of National or Foreign production, that will be called later pi? briefly with the commonly accepted term of BaM.

To better clarify the concept, we want to remember that the BaMs have a very ancient history (they were ?invented? by the Chinese over 1000 years ago): in practice, they are small objects/containers filled with explosives, whatever it may be, which are ordinarily thrown at hand, needing, in any case, a trigger to obtain the detonation: in ancient times it was a fuse which was set on fire and which triggered the detonation in a pre-set time given by the length of the same and, more? recently (for example BaM used in the 1st and 2nd World War and today), still dealing with a small container/case of a different shape, easily handled and thrown by hand, with a trigger always of the ?piric? type? ie a ?modernized short fuse? contained in a tube inside the small container/case, which is ?turned on? from a chemical compound (Primer) that sets it on fire? triggering the explosion of the bomb - when is a safety device called ?Leva di Maneggio? held in place (usually) by a cotter pin with a pull ring.

All BaMs, when launched (safety eliminated), generally have a pre-set trigger time which varies, as a rule, from 3.5? to 4.5?, which generally puts the operator who launched it in safety.

If for?, for reasons of necessity? tactics on the field, you wanted to launch pi? away any BaM, the usual trigger time of the BaM mentioned above. would become completely insufficient: in fact, having to travel ? in flight - a journey more? long and wanting to hit at a distance greater than that obtainable with traditional hand throwing, as usual, it would detonate in the air along the way, not obtaining the desired effect.

Hence the need? to adapt the trigger time of the BaM according to the modality? of launch, from the distance to travel towards the target or, if you want to obtain particular tactical effects, for example an aerial detonation (Overhead Burst) on command or calculated time, to be able to hit hostiles from above (for example, hidden behind to embankments or natural/artificial obstacles) or to keep them at a distance. C?? so the need? to intervene on the methods? of Detonation, releasing these modalities?, from what prefixed by the Manufacturer of the BaM. This also applies if you wish to obtain an underwater detonation for the purpose of interdicting any hostiles entering the Ports or Arsenals etc., either with a BaM placed on a special support that blocks it safely, or if you wish to use an explosive charge inserted in a special tube that has hydrodynamic and waterproof characteristics, in practice obtaining a small and very handy Bomb / Underwater Charge, better if it can be launched from a distance with mode? detonation adjustable over time, in the depth? (in case of underwater use) or detonation activated by radio command.

As stated above and premised, does it require absolute reliability? and total safety in use and handling. For the purpose yes? worked a lot on the active and passive safety side, linking together the various operational phases of handling and launch.

This is thanks to the use of targeted, highly sophisticated and reliable electronics.

The target ? that of obtaining a Polyfunctional Electronic Fuze (10 ? 410), with High Safety of use, a further notable improvement of existing Electronic Fuzes, to be used with BaM of all types, and other detonating objects, capable of operating on the Ground as in a Marine environment , with the following operating characteristics:

Field Operations:

Choice of trigger/detonation on 4 pre-set times: 3.5 - 5 - 7.5 - 10 seconds ? impact (default) ? controlled by radio signal. Times that, however, can be different.

Sea Operations:

Choice of 4 depths? of prefixed detonation: 5 ? 10 ? 15 ? 20 meters, defaults when it hits bottom.

Handling safety:

Absolute thanks to 3 main safety devices linked together 1 accessory:

ON - OFF ? pressure switch ? Accelerometric ? Data entry error / time limit.

Furthermore: if you do not intervene by proceeding expeditiously in setting the parameters, after 10 seconds c?? automatic deactivation of the fuze with red LED (43) Fail/Error.

Figure 1 ? a transparent axonometric view of an Extended and Enhanced Safety Electronic Polyfunctional Fuze (10), of the invention where, in the end Closure (11) the following are highlighted schematically: the Pressure Switch/Pressure Switch (12) in the foreground, in the queue, and the Accelerometer (14) on the Electronics board (13) - this is the technological innovation - (indicated as a sort of small black parallelepiped) -, both absolutely essential operating components, in combination with each other, for safety purposes : this double security ? very innovative and unique in the specific sector.

Figure 2 depicts the Multifunctional Electronic Fuse with Extended and Enhanced Safety as in Fig. 1 but with a side view and in transparency, where the following are highlighted: the tail closure (11), the central body with electronic card (13) and the Thread (16) for connection to the detonating element (BaM or any other detonating element).

Figure 3 better represents the 3 Blocks which essentially make up the cylindrical body (10) in polymeric material (a fact which should not be considered a limit, as it could also be in alternative materials and have another geometric shape) of the Extended Safety Electronic Multifunctional Fuse and Reinforced (10 - 410) which has a thread (16) in the end part (but not limited to a thread, as there could be a connection of a different type, for example quick-connection/quick coupling for connection to the user, BaM or other). These 3 Blocks contain:

Block 1, Closing (11):

Pressure switch/Pressure switch (12), with double function? trigger both for operat? on the Ground (GROUND Ops.) and Underwater (SUB. Ops.), with cables (31) of suitable length, for connection with Block n.2.

Block 2, Control and Safety Electronics in the cylindrical body (10 -410):

Electronic Board (13) with the other essential operational and safety element: the innovative Accelerometer (14), which, if not activated, only and exclusively during launch (by hand or with a dedicated launcher) measures acceleration of the object when launched, does not allow any activation of the Multifunctional Electronic Fuze device with Extended and Enhanced Safety (10 - 410), therefore no possibility? of accidental detonation.

In practice: double operational safety, ? given by the combination/chaining of the activation in sequence of the pressure switch (12) - acting, in practice, in the initial phase as a pressure switch - and by the accelerometer (14): if one of the two does not give? the consensus, in sequence with the? other, can not? no ignition/detonation occurs.

Block no. 3, Thread 16, trigger by special ultra-fast micro-electric resistance (21) or unit? Piezo-electric (here not shown), as an alternative solution, pi? expensive but just as reliable as the micro-Resistance (21), highlighted with its symbol (Fig.2). In the internal area of the thread (16) of connection with the BaM or with other utilities, ? inserted the Explosive (whatever it is) in a special small Container (15) placed inside the Fillet area (16), triggered by an electric micro-Resistance (21) shown here which, when lit, red-hot, triggers the process of detonation. The ignition of the micro-Resistance (21) up to incandescence which acts as a trigger, ? given by a capacitor, and the whole can? take place only and exclusively if there ? the double consent in sequence of the Pressure Switch (12) and of the Accelerometer (14) and, in any case, after 3 or 5 seconds (adjustable in the Factory) of further safety, until the BaM (72 and 91), or other detonating user, is located well away from the operator/launcher.

Figure 4 shows, schematically, the FRONT of the Extended and Enhanced Safety Electronic Multifunctional Fuse device (410) (e 10 Fig 1), with the different functionalities for the? operation? on Land - track 444 - (GROUND Ops.) and Amber Yellow LED (44), and on Sea (SEA Ops.) - track 445 - and Blue LED (45), highlighting a further originality? design of this device: the setting of operating data via ?Magnetic Pen? (110), i.e. a rod similar to a pen that has at its end? a small but mighty magnet. With the aforementioned Magnetic Pen, an ON-OFF Switch (442) is activated, signaled by the Green LED (42) which activates the device and, placing the magnet on the GROUND track (444) with Yellow Amber LED (44), or on the track SEA (445) with LED Bleu (45) are the Functions activated, as desired? Operations mentioned above: LAND (GROUND) or SEA (SEA) with the relative parameters indicated by the LEDs Land (441) 4x Yellow Amber, or Sea (451) LEDs 4x Blue.

Figure 4a shows, schematically, the REAR of the Extended and Enhanced Safety Electronic Multifunctional Fuze device (410) with the functionality? Manual, i.e. when the aforementioned fuze is launched with everything connected to it (BaM or other detonating object) only and exclusively by hand by an operator on the ground: on the back of the multi-purpose electronic fuze with extended and enhanced safety, there is? a slightly hollowed-out area/trace (401) where the Magnetic Pen must be placed which automatically excludes (only temporarily) the Pressure switch (12), leaving only the Accelerometer (14) free to operate which will give? the consent, or not, to the detonation only and exclusively at the launch. Only after the launch is the Pressure switch (12) reactivated, useful when used to adjust the depth? of burst. A Green LED (402) signals the operation? in Manual.

Example of operation? Terrestrial (GROUND Ops.) (444):

You pick up the device connected to any ?user? (BaM or other) and, if you intend to activate it/make it operational, will you proceed? as follows:

-A- Is the end? of the ?Magnetic Pen? (110) with the Magnet in the area/track ? slightly sunken? marked with ? ON ? OFF ? (442). Keeping the magnet (111) supported, will it turn on? the Green LED light (42) to mean that the device is now ON/Active, but NOT triggered, so not dangerous in any way. In case of error will it turn on? the Red LED (43) FAIL (Error) which imposes, for safety, the repetition of all the set operations.

-B- You choose the mode? of use: Earth (GROUND) (444), Amber Yellow LED (44) (or Sea (SEA) (445) with Blue LED (45) ), for example, csd will be chosen? Terra (GROUND) (444) and, in this case, will it lean? the Magnet on the sunken area/trace with the writing GROUND (444): it will immediately light up? the Yellow Amber LED (44) to confirm the choice. The next step allows for two options:

- Setting the fixed detonation time, Standard: 3.5 ? 5 ? 7.5 ? 10 seconds, the choice is highlighted by the progressive lighting up of the row of 4 Yellow Amber LEDs (441). (Other timing possible on request).

- Detonation with radio command that can? take place via signal from a mobile phone or from the dedicated transmitter (100) Fig.10, similar to common gate openers or similar home automation devices. The device ? set to 430 KHz (Default) - other Frequencies on request- and ? usable as shown below, or on another on request.

- You want to choose the 7.5 second Timer option: Yellow Amber LEDs (44 and 441).

In this case, just slide the ?Magnetic Pen? from left to right in the appropriate track (47) between the 2 rows of LEDs. (110) with the Magnet (111) up to the LED which is in the 3rd position, what will it do? turn on (staying on) 3 yellow amber LEDs (441) in sequence - out of four - and the required 7.5 seconds are automatically set.

The device now ? ready to detonate (ONLY) when activated, in sequence:

a) the Pressure Switch/Pressure Switch (12) located in the closure (11) (Block 1) b) the Accelerometer (14) located on the Electronic Board (13) (Block 2).

For example, when this Unit?/Fuze (with BaM 72 - 91 or other detonating utility: see further on) inserted in the appropriate Launcher/Bomb Launcher for example: the Launchers < Limbo 1ML> Pneumo-Mechanic (90) or < Limbo 1CT> High Pressure Tire - not illustrated - (our previous Patent Application n.102020000018565).

Launch operation, by way of example: using the <Limbo 1CT> High Pressure Compressed Air Launcher (not shown), when the Extended and Enhanced Safety Electronic Multipurpose Fuze device (10 and 410) in the description, more? the user to activate (e.g.: any BaM) ? inserted in the launch tube, as the trigger is pressed, the compressed air blow immediately activates the pressure switch (12) and, consequently, simultaneously also the accelerometer (14) which, ?registering? the acceleration impressed on the launch of the Extended and Enhanced Safety Electronic Polyfunctional Fuse (10 and 410), activates the detonation circuit, but with a safety pause of 3 or 5 seconds (safety timing modifiable on request) in order to give time for the launched detonating object to be at a safe distance from the launcher.

Once the launch safety time has elapsed, the set time starts, in this case the set 7.5 seconds, at the end of which, the micro-Resistance (21) placed in contact with the priming charge (Block 3) inserted in said small Container (15), becomes red-hot to the point that the detonation of the hollow charge contained in said small Container (15) takes place and, consequently, the chain detonation of the appropriate support Stem (70) filled with Explosive (81) and of the BaM (72) (Fig.7 ) or of the hollow Stem (80) (Fig.8) without or with Nose (82) filled with Explosive (Fig. 8a) also referred to in the Patent Application no.

1020200000018565.

You want to choose the Radio command detonation option: the procedure? exactly the same as above with the difference that no timing is set but, once the detonating object? has come out of the launcher, once the safety inactivation time has elapsed (3 or 5 seconds csd), simply by pressing the detonation button (104) of the Transmitter (100) (Fig.10) you will have detonation also in the air (Overhead Burst) or at any time even on the ground.

Example of operation? Navy/SEA (445): which depth charge? anti-hostiles along the lines of what is stated regarding the operation? Terrestrial, choosing the Marina/SEA option (445) ? just bring the Magnetic Pen to SEA and it will turn on? the blue LED (45); will you do? then slide the Magnetic Pen on the track (47) ? in the middle of the 2 rows of LEDs, lighting in sequence the LEDs Bleu (451) up to the depth? desired burst. By default the following depths have been considered: 5 ? 10 ? 15 ? 20m. as it is assumed that any hostile dive operators will use ?closed circuit? (without a trace of air bubbles on the surface) which, necessarily, greatly limit the depth? operational at approx. 15-:-18mt. max., exceeding which, one would face serious physical damage, even lethal. On the other hand ? also to consider that the depth? max of the vast majority of Arsenals/Ports Military and not, have depth? max. which are on average between 10 and 20m.

When the Extended and Enhanced Safety Electronic Multifunctional Fuze (10 ? 410) is launched with the detonating utility, as previously described, the following are activated in sequence: the Pressure switch (12) and the Accelerometer (14) but, in this case, the pressure switch (12) will measure? the pressure of the column of water and, having reached the pre-set quota, dar? consent to detonation.

Do you want to choose the Hand Launch detonation option? Rear Body/Fuze (410) - with both options of GROUND (444) and SEA (445) in this case, after having brought the Magnetic Pen to the ON-OFF track (442), turning on the LED Green (42) ?ON- ? necessary to proceed with the temporary By-Pass of the Pressure switch (12), bringing the Magnetic Pen (110) to the rear face of the Electronic Multifunction Fuse with Extended and Enhanced Safety (10 ? 410) and positioning it on the track ?Pressure Switch MANUAL? (401), will ignite? the Green LED (402) and, in this case:

- The Multifunctional Electronic Fuze with Extended and Enhanced Security (10 ? 410) ? active, but always in total safety.

- Will you have to? select the Land (GROUND) (444) or Sea (SEA) (445) operating field How is the Multipurpose Electronic Fuse with Extended and Enhanced Safety (10 ? 410) launched, always connected to the ?detonating object? (BaM or other), the Accelerometer (14) comes into operation, which ?sensing/recording? the violent motion variation also reactivates the pressure switch circuit (12), also useful for operating in a marine environment (burst depth), without prejudice to the other timed, shock (Default) and radio signal options.

Operational safety: 3 1 active and passive safety:

- By ON switch ? OFF (442) for activation of the Electronic Multifunction Fuse with Extended and Enhanced Safety.

- Through the Stand-By and operating cycle start pressure switch (12).

- By means of the Accelerometer (14) which, if it does not feel/feel the acceleration, does not activate any detonation circuit and the Electronic Multipurpose Fuse with Extended and Enhanced Safety, remains completely inert and in total Safety, a Red LED (43) lights up which warns of the error (FAIL) automatically leading - for further safety - to the switching off (OFF) of the Electronic Multifunctional Fuse with Extended and Enhanced Safety and possibly, if necessary, starting the activation procedure of the Device from the beginning.

Figure 5 shows the Electronic Block Diagram, with the different connections and functionalities? in the presence of a micro-Resistor (21), as a trigger for the detonation of the small hollow charge contained in the small container (15) in the area inside the connection thread (16) (or other type of connection means), all? detonating user.

Figure 6 shows the electronic block diagram, with the different connections and functions? in the presence, instead of a micro-Resistance (21), of a pi? expensive, but technically feasible element of the Piezo-electric type (not shown), as another possible trigger for the detonation of the small hollow charge contained in the small container (15) placed in the area inside the thread (16) for connection to detonating objects ( or with another type of known connection means instead of the thread (16) ).

Figure 7 shows the Multifunctional Electronic Fuze with Extended and Enhanced Safety, connected via M27x2 Thread (16) to the hollow Stem (70), containing additional Explosive (81) connected in turn, again via male/female Threads on a special Custom socket (71), with a ball-type BaM (72) housed, as per our Department patent no. 102020000018565; the detonation of the Multifunctional Electronic Fuze with Extended and Enhanced Safety would trigger a chain of explosions (Hollow Stem 70 with Explosive 81 BaM 72), extremely significant and useful on a tactical level with an extremely advantageous cost/benefit ratio.

Figure 8 shows the Extended and Enhanced Safety Electronic Polyfunctional Fuse (10 ? 410), connected by M27x2 Thread (16) on a hollow Stem (80) length 190.5mm/7.5?, containing over 100gr. of Additional Explosive (81): This modular Assembly can? be combined as desired with other hollow Stems, BaM (see Fig.7) etc.

Figure 8a shows the Electronic Multifunctional Fuse with Extended and Enhanced Safety, connected via M27x2 Thread to the hollow Stem (801) length 254mm/10?, containing over 150gr. of additional Explosive (81), with an Ogiva (82) that allows a better and more? fast penetration into water; in this case ? is evident the application of type Underwater, such as Charge of Depth? anti-intrusion of Hostiles in Ports / Maritime Military Arsenals etc.

Figure 9 shows a BaM Launcher, in this case, for example, of the Pneumo-Mechanical type Mod. < Limbo 1 ML > (90) (referred to in our previous Patent Application n.

1020200000018565) with an Extended and Enhanced Safety Electronic Multifunctional Fuze Assembly (10 ? 410) Hollow Stem/Handle (801) containing over 150gr of additional Explosive (81) BaM ?Can? (91) enclosed in a shaped watertight container (92).

When launched, the Assembly with the Extended and Enhanced Safety Electronic Polyfunctional Fuze (10 ? 410) Hollow Stem/Handle (801) BaM (91), the same Extended and Enhanced Safety Electronic Multifunctional Electronic Fuze (10 ? 410) is active only after the Acceleration sensor (14) has detected the violent change of state, giving the consent for detonation only after 3 (or 5) seconds (time for putting the Operator on the ground in safety).

This means that, even if the Pressure Switch (12) is activated by a jet of air or pneumo-mechanical pressure, for whatever reason ?the Explosive Assembly? does not come out of the Launcher, can not? no accidental detonation following the failed launch.

Figure 10 shows an example of a Radio Transmitter (100), very similar to those used in the field of domotics (gate openers, shutters, etc.) which can be set on different frequencies, for activating the detonation on a Radio pulse of the Electronic Multifunctional Spoletta to Expanded and Enhanced Security (10-410).

The following characteristics, however, also pertaining to another of ours, should be underlined. Patent application no. 102020000018565, but of the same utility? for this innovative Multifunctional Electronic Fuse with Extended and Enhanced Safety (10-410):

Body of the Transmitter (100) in shockproof plastic material; (101) Main ON-OFF slide switch, slightly recessed to prevent unintentional activation; Push-button switch (102) that can be activated only when the switch (101) is ? to the ON state, which is used to activate the Transmitter (100) -Stand-By-, indicated, for example, by the Red micro LED (103); a further Button (104) is used to select the radio impulse function with the timer function (to be set in the Factory), signaled by further Green (105) and Yellow (106) Micro LEDs; the double functionality? ? operated by a slide micro-switch (107).

Of course, the above? purely indicative and a Transmitter of the type illustrated in Fig. 10. capable of sending a radio signal to the Extended and Enhanced Safety Electronic Multifunctional Fuze (10-410), can? be much more simply equipped with a built-in ON-OFF slide selector (101); a Stand-By Switch (102) signaled by a Red micro-LED (103); and a Detonation Button (104), signaled by a Green micro-LED (105), when ? request Detonate on command. In any case, the combinations of activations are the pi? various and others on request.

Figure 11 shows the ?Magnetic Pen? (110) in very resistant technical plastic material with, inserted on one side, the powerful little magnet (111) for activating the various operating functions and, on the opposite side, a flat tip like a screwdriver blade (112) for activating ( for example), possibly of the Recessed ON - OFF switch (101), of the Transmitter 100 (Fig.10). AND? also evident, that the Magnetino (111) can? insert in another ?tool? act to set more? comfortably and surely the various operating parameters to be set on the Extended and Enhanced Safety Electronic Multifunctional Fuse (10-410), for example: a ring that can be easily worn on the fingers of the right hand. or Sin. with a Magnet (not shown), or a ?brooch? with Magnetino wearable, for example, on a Combat Jacket, and secured with an anti-loss cable or chain, etc.

Claims (12)

1) High safety electronic multifunction fuze including: (a) a container with connection means for connection to a detonating element; and included in said container (b) preferably an on/off switch; (c) a pressure switch; (d) an accelerometer; (e) preferably a deactivation system capable of turning off the fuze following an incorrect data entry or exceeding a time limit, for example 10 seconds; wherein said pressure switch and said accelerometer are linked in such a way that the triggering of the detonating element is subject to the activation in sequence of both elements. 2) Spool according to claim 1, characterized in that the spool can? be set for terrestrial or marine use in which the setting provides for terrestrial use a trigger at pre-set times, by impact or controlled by radio signal and for marine use a trigger at depth? detonation rates, in particular at 5, 10, 15 or 20 meters or by impact on the bottom. 3. Fuse according to claim 1 or 2, characterized in that said accelerometer is activated only in case of a measurement of an acceleration. 4) Fuze according to any one of the preceding claims, characterized in that said fuze ? connected through said means of connection to said detonating element, which ? preferably selected from the group consisting of hand grenades with or without their launcher; hand grenades with or without a support rod; ogive with its stem and with or without launcher. 5) Spool according to any one of the preceding claims, characterized in that said connection means are selected between a thread and a quick coupling. 6) Fuze according to any one of the preceding claims, characterized in that said connection means comprise an electric micro-resistance or a unit? piezoelectric to trigger an explosive always contained in said connection means. 7) Spool according to any one of the preceding claims, characterized in that it also comprises (f) an additional safety device which allows the triggering only after a certain predetermined period of time has elapsed, in particular only if within a certain period of time the accelerator detects an acceleration. 8) Spool according to any one of the preceding claims, characterized in that for manual use ? foreseen the possibility? to temporarily exclude the pressure switch that ? subsequently reactivated following the consent received from the accelerometer, on the one hand as further security and on the other as an underwater detonation actuator for depth quota? set. 9) Fuse according to any one of the preceding claims, characterized in that the setting of the operating data of the fuze takes place magnetically and/or that the parameters, selected between on/off; data entry error; pressure switch excluded/included; land/sea use; set time; depth set are indicated by the light feedback with colored LEDs. 10) Spool according to any one of the preceding claims, characterized in that ? made waterproof up to water pressures of 5bar and/or includes (g) a battery to power the various electronically operated devices. 11) Spool according to any one of the preceding claims, characterized in that ? equipped with a magnetic actuator for setting the parameters and/or a radio transmitter for communicating a command for activating the detonation circuit to a radio receiver included in the fuze. 12) Method of use of the spool according to any one of the preceding claims comprising the following steps: (I) providing a fuze connected to a related detonating element according to any one of the preceding claims; (II) ignition of the fuze with the on/off switch; (III) mode setting? of terrestrial or marine use; (IVa) in case of choice of terrestrial use, the detonation time is set or the detonation with radio command is set; (IVb) in case of choice of? marine use you set the depth? desired burst, for example chosen between 5, 10, 15 and 20 metres, measurable by said pressure switch; (Va) activation of the pressure switch, for example by means of the air pressure exerted by a launcher or manually or (Vb) temporary deactivation of the pressure switch, preferably before step (III); (VI) launch of the fuze connected to a related detonating element; (VII) measurement of the acceleration imparted upon launch by the accelerometer which reactivates the pressure switch if phase (Vb) is performed earlier; (VIII) since the pressure switch and accelerometer are activated and when the values set in phase (Va) or (Vb) are reached or when ? given a radio command, the detonation circuit is activated, preferably after a safety time period, for example 3 or 5 seconds, and therefore the triggering of the detonating element; in which additional safety devices are preferably provided which switch off the fuze if (i) the data entry is done incorrectly or not within a certain period of time; or (ii) the accelerometer does not cause acceleration within a given period of time after its activation.