EP0022099A1 - Land mine having timed ignition means - Google Patents
Land mine having timed ignition means Download PDFInfo
- Publication number
- EP0022099A1 EP0022099A1 EP19800850078 EP80850078A EP0022099A1 EP 0022099 A1 EP0022099 A1 EP 0022099A1 EP 19800850078 EP19800850078 EP 19800850078 EP 80850078 A EP80850078 A EP 80850078A EP 0022099 A1 EP0022099 A1 EP 0022099A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mine
- charge
- shaft
- motor
- operating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/44—Arrangements for disarming, or for rendering harmless, fuzes after arming, e.g. after launch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/40—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
Definitions
- the present invention relates to a mine of the kind which includes a casing, and ignition means, a de-masking charge, a detonator charge and an explosive charge contained in said casing.
- the ignition means includes divers means required for the intended function of the mine under predetermined conditions.
- the de-masking charge is intended to blow away part of the mine (the upper part) subsequent to the detection of, for example, an enemy vehicle, but prior to causing the mine to explode.
- the detonator charge is intended for the preparation of the actual explosion.
- the explosive charge creates the explosion for destroying the enemy vehicle.
- mines having ignition means which include a clock movement for operating a mechanism in accordance with a given program.
- the mines are provided with safety means to ensure against premature explosion or to prevent the mines from exploding subsequent to a given lapse of time, etc. It has been found, however, that the drive means (the clock movement) are able to function in a manner not intended (e.g. as a result of racing), and that, for some reason or another, the safety means have not functioned correctly or have not been handled in the manner intended, and hence the risk of such mines exploding in a non-planned manner is too great to be accepted.
- a mine constructed in accordance with the invention includes an electric motor which is driven by an energy source and which is arranged to rotate at a speed exceeding 5000 r.p.m. and to activate the de-masking charge and the detonator charge at given pre-determined external conditions, via a transmission means and an operating shaft.
- FIG. 1 illustrates in plan view a mine constructed in accordance with the invention, said mine having a casing 10 which contains an ignition means, a de-masking charge, a detonator charge and an explosive charge.
- a casing 10 which contains an ignition means, a de-masking charge, a detonator charge and an explosive charge.
- two safety means 11, 12 which, during storage of the mine and the transportation thereof, etc., are locked in a safe position by means of a transport safety means 13, which, in turn, is held in place by a metal wire 14.
- the safety means 11 is prevented from rotating clockwise by an edge 131 on the transport safety means 13, while an edge 132 prevents clockwise rotation of the safety means 12 in a corresponding manner.
- the knob or handle of respective safety means points towards markings illustrated by horizontal sectioning in the drawing ("green"), showing that the mine has been made safe. This marking is also shown in a window 15 arranged in the lid of the mine.
- the safety means 11, 12 prevent an operating shaft 30 from rotating (see Figure 3).
- the mine Before placing the mine in the ground, the mine must be made live. This is effected by removing the metal wire 14 and the transport safety means 13, whereafter the safety means 11, 12 are depressed and turned clockwise through 90°. The knob or handle of the safety means will then point towards markings having vertical sectioning in the drawing ("red”), showing that the mine is live. The marking visible in the window 15, however, is still sectioned horisontally ("green").
- a current path is connected to an electric motor 20 incorporated in the mine (see Figure 2).
- a current path is connected to an electronic unit which includes a timing device and after a lapse of about 10 minutes connects a current path to the ignition means.
- the operating shaft 30 is mechanically freed, see Figure 3, said shaft 30 being driven by the electric motor and thus begins to rotate as soon as the safety means 11, 12 take their non-safe position.
- the motor 20 is arranged to rotate at a relatively high speed, e.g. a speed of about 15000 r.p.m., and drives the operating shaft 30 via a transmission means at a transmission ratio of 600000:1. After a lapse of about 10 minutes, the shaft 30 will have rotated through about 90°. In this position, two bores extending through the shaft 30 at right angles to the long axis of said shaft will adopt positions such that one bore enables detonation of the de-masking charge while the other bore enables detonation of the detonator charge. These charges, however, can only be detonated when a magnetic sensor incorporated in the mine detects, in a known manner, the presence of an enemy vehicle, such as a tank.
- this marking has the form of horisontal sectional lines ("green”), when the mine is safe, and vertical section lines (“red”), when the shaft 30 has been rotated through said 90° after a lapse of 10 minutes.
- FIG. 2 illustrates the casing 10, a casing lid 21, a battery 22 for operating the electrical motor 20, the de-masking charge 23, the detonator charge 24, the magnetic sensor 27, the ignition means 25 and the explosive charge 26.
- the transport safety means 13-and the safety means 11 are shown arranged on the lid 21.
- Figure 3 illustrates the manner in which the safety means 11, 12 prevent rotation of the operating shaft 30.
- these safety means in the safe position both engage recesses in the shaft 30.
- the shaft is unable to rotate before both safety means have been mechanically moved from the safe position.
- the mine After a time lapse of about 10 minutes subsequent to rendering the mine live, the mine will thus be ready to be exploded. Meanwhile the timing means in the electronic unit is operative, and if the mine has not been caused to explode within a period of 30 days, a further current circuit is connected to the motor 20, which then begins to rotate the operating shaft through 270°, back to the starting position. The two bores arranged in the shaft 30 will then be rotated out of the positions necessary for effecting a detonation, i.e. the detonator charge and the de-masking charge can not now be detonated.
- one of the safety means 11, 12 will be lifted by the shaft 30 in a manner such that said safety means, subsequent to the shaft 30 being rotated through a complete turn, will prevent the shaft 30 from being rotated through a further revolution before the safety means has been reset.
- the safe, green marking will now be shown in the window 15.
- Rotation of the operating shaft 30 after said lapse of 30 days also causes an activating means 40, see Figure 4, to be displaced in a manner such as to activate a marking means (not shown in Figure 4) arranged to mark above the surface of the ground the position of the mine beneath said surface.
- Figure 4 illustrates the position of the shaft 30 10 minutes after the mine has been made live and buried in the ground.
- a stop screw 41 extends vertically downwardly and projects slightly outside the shaft.
- the stop screw 41 during its rotation will engage the edge of the activating means 40, which in the illustrated embodiment comprises a springactuated ignition plug.
- the spring is tensioned during movement of the ignition plug to the right, and, at the same time, a protective cover plate 42 is rotated out of the illustrated position, in which it covers an opening 43 intended for the passage of the ignition plug.
- the mechanical contact of the stop screw 41 with the ignition plug 40 ceases, therewith releasing and igniting the marking means on the other side of the opening 43.
- This means which comprises a charge and a "flag" fixed to a line at the mine casing is therewith shot through the layer of earth above the mine, to disclose the position of the mine.
- the mine which is now safe, can be lifted from the ground without risk, thereafter the safety means 11, 12 are rotated to the starting position ("green"). Subsequent to changing the battery 22 and the marking means, the mine is again ready for renewal burial in the earth.
- the speed of the motor 20 should not be less than 5000 r.p.m. or greater than 200000 r.p.m.
- Figure 2 also illustrates the two bores 301 and 302 of the operating shaft 30, and the electronic unit 28. Adjacent the bore 302 is a detonating cap which is arranged to detonate the de-masking charge which, in turn, initiates detonation of the detonator charge through a delay capsule in the ignition means 25.
- a detonating cap Adjacent the bore 302 is a detonating cap which is arranged to detonate the de-masking charge which, in turn, initiates detonation of the detonator charge through a delay capsule in the ignition means 25.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Air Bags (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
Description
- The present invention relates to a mine of the kind which includes a casing, and ignition means, a de-masking charge, a detonator charge and an explosive charge contained in said casing.
- The ignition means includes divers means required for the intended function of the mine under predetermined conditions.
- The de-masking charge is intended to blow away part of the mine (the upper part) subsequent to the detection of, for example, an enemy vehicle, but prior to causing the mine to explode.
- The detonator charge is intended for the preparation of the actual explosion.
- The explosive charge creates the explosion for destroying the enemy vehicle.
- Many different embodiments of mines of the kind described in the aforegoing are known to the art. Known to the art are mines having ignition means which include a clock movement for operating a mechanism in accordance with a given program. The mines are provided with safety means to ensure against premature explosion or to prevent the mines from exploding subsequent to a given lapse of time, etc. It has been found, however, that the drive means (the clock movement) are able to function in a manner not intended (e.g. as a result of racing), and that, for some reason or another, the safety means have not functioned correctly or have not been handled in the manner intended, and hence the risk of such mines exploding in a non-planned manner is too great to be accepted.
- The object of the present invention is to eliminate the aforementioned disadvantages and to increase therewith the safety of mines of the described kind. A mine constructed in accordance with the invention includes an electric motor which is driven by an energy source and which is arranged to rotate at a speed exceeding 5000 r.p.m. and to activate the de-masking charge and the detonator charge at given pre-determined external conditions, via a transmission means and an operating shaft.
- These and other characteristic features of a mine constructed in accordance with the invention are disclosed in the accompanying claims.
- The invention will now be described in more detail with reference to the accompanying drawings, in which
- Figure 1 illustrates in plan view a mine according to the invention;
- Figure 2 is a sectional view of the mine illustrated in Figure 1;
- Figure 3 illustrates two safety means and an operating shaft which is capable of being activated by said safety means and which is arranged to enable activation of the de-masking charge and the detonator charge incorporated in the mine; and
- Figure 4 illustrates the operating shaft and a marking neans which is actuatable by the operating shaft.
- Figure 1 illustrates in plan view a mine constructed in accordance with the invention, said mine having a
casing 10 which contains an ignition means, a de-masking charge, a detonator charge and an explosive charge. For the purpose of rendering the mine safe and live respectively, there are provided two safety means 11, 12 which, during storage of the mine and the transportation thereof, etc., are locked in a safe position by means of a transport safety means 13, which, in turn, is held in place by ametal wire 14. The safety means 11 is prevented from rotating clockwise by anedge 131 on the transport safety means 13, while anedge 132 prevents clockwise rotation of the safety means 12 in a corresponding manner. The knob or handle of respective safety means points towards markings illustrated by horizontal sectioning in the drawing ("green"), showing that the mine has been made safe. This marking is also shown in awindow 15 arranged in the lid of the mine. When the mine is safe, the safety means 11, 12 prevent anoperating shaft 30 from rotating (see Figure 3). - Before placing the mine in the ground, the mine must be made live. This is effected by removing the
metal wire 14 and the transport safety means 13, whereafter the safety means 11, 12 are depressed and turned clockwise through 90°. The knob or handle of the safety means will then point towards markings having vertical sectioning in the drawing ("red"), showing that the mine is live. The marking visible in thewindow 15, however, is still sectioned horisontally ("green"). - When the safety means 11, 12 occupy their non-safe position, a current path is connected to an
electric motor 20 incorporated in the mine (see Figure 2). At the same time a current path is connected to an electronic unit which includes a timing device and after a lapse of about 10 minutes connects a current path to the ignition means. Also, theoperating shaft 30 is mechanically freed, see Figure 3, saidshaft 30 being driven by the electric motor and thus begins to rotate as soon as the safety means 11, 12 take their non-safe position. - The
motor 20 is arranged to rotate at a relatively high speed, e.g. a speed of about 15000 r.p.m., and drives theoperating shaft 30 via a transmission means at a transmission ratio of 600000:1. After a lapse of about 10 minutes, theshaft 30 will have rotated through about 90°. In this position, two bores extending through theshaft 30 at right angles to the long axis of said shaft will adopt positions such that one bore enables detonation of the de-masking charge while the other bore enables detonation of the detonator charge. These charges, however, can only be detonated when a magnetic sensor incorporated in the mine detects, in a known manner, the presence of an enemy vehicle, such as a tank. As theshaft 30 rotates, it turns a marking shaft which exhibits at one end thereof a marking which can be seen through thewindow 15. As previously mentioned, this marking has the form of horisontal sectional lines ("green"), when the mine is safe, and vertical section lines ("red"), when theshaft 30 has been rotated through said 90° after a lapse of 10 minutes. - The sectional view shown in Figure 2 illustrates the
casing 10, acasing lid 21, a battery 22 for operating theelectrical motor 20, thede-masking charge 23, thedetonator charge 24, themagnetic sensor 27, the ignition means 25 and theexplosive charge 26. The transport safety means 13-and the safety means 11 are shown arranged on thelid 21. As previously mentioned, Figure 3 illustrates the manner in which the safety means 11, 12 prevent rotation of theoperating shaft 30. As will be seen, these safety means in the safe position both engage recesses in theshaft 30. Thus, even though the motor should be energized and therewith activated for rotation of theshaft 30, the shaft is unable to rotate before both safety means have been mechanically moved from the safe position. - After a time lapse of about 10 minutes subsequent to rendering the mine live, the mine will thus be ready to be exploded. Meanwhile the timing means in the electronic unit is operative, and if the mine has not been caused to explode within a period of 30 days, a further current circuit is connected to the
motor 20, which then begins to rotate the operating shaft through 270°, back to the starting position. The two bores arranged in theshaft 30 will then be rotated out of the positions necessary for effecting a detonation, i.e. the detonator charge and the de-masking charge can not now be detonated. In addition hereto, one of the safety means 11, 12 will be lifted by theshaft 30 in a manner such that said safety means, subsequent to theshaft 30 being rotated through a complete turn, will prevent theshaft 30 from being rotated through a further revolution before the safety means has been reset. The safe, green marking will now be shown in thewindow 15. - Rotation of the
operating shaft 30 after said lapse of 30 days also causes an activating means 40, see Figure 4, to be displaced in a manner such as to activate a marking means (not shown in Figure 4) arranged to mark above the surface of the ground the position of the mine beneath said surface. - Figure 4 illustrates the position of the
shaft 30 10 minutes after the mine has been made live and buried in the ground. - A
stop screw 41 extends vertically downwardly and projects slightly outside the shaft. When theshaft 30 is rotated through 270° to its starting position after the aforementioned lapse of 30 days, thestop screw 41 during its rotation will engage the edge of the activating means 40, which in the illustrated embodiment comprises a springactuated ignition plug. The spring is tensioned during movement of the ignition plug to the right, and, at the same time, aprotective cover plate 42 is rotated out of the illustrated position, in which it covers anopening 43 intended for the passage of the ignition plug. Upon continued rotation of theshaft 30, the mechanical contact of thestop screw 41 with the ignition plug 40 ceases, therewith releasing and igniting the marking means on the other side of theopening 43. This means, which comprises a charge and a "flag" fixed to a line at the mine casing is therewith shot through the layer of earth above the mine, to disclose the position of the mine. The mine, which is now safe, can be lifted from the ground without risk, thereafter the safety means 11, 12 are rotated to the starting position ("green"). Subsequent to changing the battery 22 and the marking means, the mine is again ready for renewal burial in the earth. - The speed of the
motor 20 should not be less than 5000 r.p.m. or greater than 200000 r.p.m. - Figure 2 also illustrates the two
bores operating shaft 30, and theelectronic unit 28. Adjacent thebore 302 is a detonating cap which is arranged to detonate the de-masking charge which, in turn, initiates detonation of the detonator charge through a delay capsule in the ignition means 25.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7905478 | 1979-06-21 | ||
SE7905478A SE428725B (en) | 1979-06-21 | 1979-06-21 | MY |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0022099A1 true EP0022099A1 (en) | 1981-01-07 |
EP0022099B1 EP0022099B1 (en) | 1982-12-29 |
Family
ID=20338349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19800850078 Expired EP0022099B1 (en) | 1979-06-21 | 1980-06-02 | Land mine having timed ignition means |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0022099B1 (en) |
DE (1) | DE3061496D1 (en) |
SE (1) | SE428725B (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3127522A1 (en) * | 1981-07-11 | 1983-01-27 | Dynamit Nobel Ag, 5210 Troisdorf | Device for indicating that a mine has been made safe again |
DE3200029A1 (en) * | 1982-01-02 | 1983-08-11 | Ingenieurbüro für Industrietechnik Manfred Knüfelmann GmbH, 4000 Düsseldorf | Electronic-mechanical safety insert of a fuze of an explosive body |
DE3206285A1 (en) * | 1982-02-22 | 1983-09-08 | Ingenieurbüro für Industrietechnik Manfred Knüfelmann GmbH, 4000 Düsseldorf | Sensor circuit for electronically controlled mines |
FR2563001A1 (en) * | 1984-04-16 | 1985-10-18 | France Etat Armement | Device for neutralisation and for display of the neutralisation of a priming system |
DE3424698A1 (en) * | 1984-07-05 | 1986-01-16 | Honeywell Gmbh, 6050 Offenbach | Safety device for fuses |
EP0202717A1 (en) * | 1985-05-21 | 1986-11-26 | Telecommunications Radioelectriques Et Telephoniques T.R.T. | Buried assembly having a signalling device |
EP0206978A1 (en) * | 1985-06-06 | 1986-12-30 | Mefina S.A. | Impact fuze for a projectile |
US4711179A (en) * | 1984-12-17 | 1987-12-08 | Affarsverket Ffv | Arrangement in a mine which is capable of being neutralized |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4070354B2 (en) | 1999-04-23 | 2008-04-02 | 三菱製紙株式会社 | 4-coumaric acid: CoA ligase cDNA, gene prepared using the cDNA, and transformed plant into which the gene has been introduced |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1326585A (en) * | 1962-03-30 | 1963-05-10 | Ruggieri Ets | Mobile carrying with it remotely controlled means of destruction |
DE2423912A1 (en) * | 1974-05-16 | 1975-11-27 | Messerschmitt Boelkow Blohm | Safety mechanism for land mines - has arming and safety devices feature for recovery of armed mines |
FR2408112A1 (en) * | 1977-11-04 | 1979-06-01 | Serat | Projective fuse with multiple safety devices - includes DC arming motor with electronic circuit controlled by inertia and pressure switches |
-
1979
- 1979-06-21 SE SE7905478A patent/SE428725B/en not_active IP Right Cessation
-
1980
- 1980-06-02 EP EP19800850078 patent/EP0022099B1/en not_active Expired
- 1980-06-02 DE DE8080850078T patent/DE3061496D1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1326585A (en) * | 1962-03-30 | 1963-05-10 | Ruggieri Ets | Mobile carrying with it remotely controlled means of destruction |
DE2423912A1 (en) * | 1974-05-16 | 1975-11-27 | Messerschmitt Boelkow Blohm | Safety mechanism for land mines - has arming and safety devices feature for recovery of armed mines |
FR2408112A1 (en) * | 1977-11-04 | 1979-06-01 | Serat | Projective fuse with multiple safety devices - includes DC arming motor with electronic circuit controlled by inertia and pressure switches |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3127522A1 (en) * | 1981-07-11 | 1983-01-27 | Dynamit Nobel Ag, 5210 Troisdorf | Device for indicating that a mine has been made safe again |
DE3127522C2 (en) * | 1981-07-11 | 1987-06-04 | Dynamit Nobel Ag, 5210 Troisdorf, De | |
DE3200029A1 (en) * | 1982-01-02 | 1983-08-11 | Ingenieurbüro für Industrietechnik Manfred Knüfelmann GmbH, 4000 Düsseldorf | Electronic-mechanical safety insert of a fuze of an explosive body |
DE3206285A1 (en) * | 1982-02-22 | 1983-09-08 | Ingenieurbüro für Industrietechnik Manfred Knüfelmann GmbH, 4000 Düsseldorf | Sensor circuit for electronically controlled mines |
FR2563001A1 (en) * | 1984-04-16 | 1985-10-18 | France Etat Armement | Device for neutralisation and for display of the neutralisation of a priming system |
DE3424698A1 (en) * | 1984-07-05 | 1986-01-16 | Honeywell Gmbh, 6050 Offenbach | Safety device for fuses |
US4711179A (en) * | 1984-12-17 | 1987-12-08 | Affarsverket Ffv | Arrangement in a mine which is capable of being neutralized |
EP0202717A1 (en) * | 1985-05-21 | 1986-11-26 | Telecommunications Radioelectriques Et Telephoniques T.R.T. | Buried assembly having a signalling device |
FR2582428A1 (en) * | 1985-05-21 | 1986-11-28 | Trt Telecom Radio Electr | BURNER SYSTEM COMPRISING A SIGNALING DEVICE |
EP0206978A1 (en) * | 1985-06-06 | 1986-12-30 | Mefina S.A. | Impact fuze for a projectile |
Also Published As
Publication number | Publication date |
---|---|
SE7905478L (en) | 1980-12-22 |
SE428725B (en) | 1983-07-18 |
EP0022099B1 (en) | 1982-12-29 |
DE3061496D1 (en) | 1983-02-03 |
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