CA1277526C - Mine field clearing apparatus - Google Patents
Mine field clearing apparatusInfo
- Publication number
- CA1277526C CA1277526C CA000533343A CA533343A CA1277526C CA 1277526 C CA1277526 C CA 1277526C CA 000533343 A CA000533343 A CA 000533343A CA 533343 A CA533343 A CA 533343A CA 1277526 C CA1277526 C CA 1277526C
- Authority
- CA
- Canada
- Prior art keywords
- vehicle
- mounting
- permanent magnet
- respect
- magnet
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H11/00—Defence installations; Defence devices
- F41H11/12—Means for clearing land minefields; Systems specially adapted for detection of landmines
- F41H11/16—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles
- F41H11/32—Decoy or sacrificial vehicles; Decoy or sacrificial devices attachable to vehicles
Abstract
ABSTRACT
An element for exploding magnetic mines comprising a permanent magnet arranged for driven engagement with a ground surface thereby providing rotation thereof, the permanent magnet being disposed at a distance in front of a vehicle to be protected from mines, whereby action of the permanent magnet provides premature detonation of mines in the vicinity thereof at a safe distance in front of the vehicle.
An element for exploding magnetic mines comprising a permanent magnet arranged for driven engagement with a ground surface thereby providing rotation thereof, the permanent magnet being disposed at a distance in front of a vehicle to be protected from mines, whereby action of the permanent magnet provides premature detonation of mines in the vicinity thereof at a safe distance in front of the vehicle.
Description
.775~6 F'IELD OF THE INVENTION
The present invention relates to apparatus for clearing mines and more particularly to mine clearing apparatus mountable on an armoured vehicle such as a tank.
BACKGROUND OF THE INVENTION
It is known in tank warfare to employ mine clearing apparat~s mounted on a vehicle for clearing a path through a mine-field.
There is described and claimed in U.S. Patents 4,491,~53 and 4,467,694, both to the assignee of the present application, mine field clearing apparatus mountable on a vehicle which comprises a pair of plows arranged in front of the treads , . .
of the vehicle. In Fig. 1 of both of the aforesaid U.S. Patents there is shown a weight in the general form of a "dog bone"
disposed on a chain which extends between the two plow sections joining same.
.
,, : . .
. .. : . ~ . . : -~ ~75'~
SUMMARY OF THE I~VENTION
The present invention relates to an element which may be employed in place of the "dog bone" weight illustrated in the aforesaid U.S. Patents of assignee.
There is thus provided in accordance with an embodiment of the present invention an element for exploding magnetic mines comprising a permanent magnet arranged for driven engagement with a ground surface thereby providing rotation thereof, the permanent magnet being disposed at a distance in front of a vehicle to be protected from mines, whereby action of the permanent magnet provides premature detonation of mines in the vicinity thereof at a safe distance in Pront of the vehicle.
Further in accordance with a preferred embodiment of the present invention, the permanent maBnet comprises at least one magnet arranged to define a longitudinal axis, the permanent magnet being magnetized in a direction perpendicular to its longitudinal axis, the magnet being arranged for driven engagement with the ground surface such that it rotates about its longitudinal axis.
Additionally in accordance with a prePerred embodiment of the present invention, the permanent magnet is enclosed in a shock resistant covering. Further in accordance with an embodiment of the invention, the shock resistant covering is surrounded by a rigid sleeve. Additionally in accordance with the invention, the rigid sleeve is surronded by a further impact .
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resistant covering.
Further in accordance with an embodiment of the invention, the magnet is bearing mounted with respect to a olounting chain for relatively free rotation with respect thereto.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be understood and appreciated more fully from the following detailed description taken in conjunction with the drawings in which:
Fig. 1 is a pictorial top view illustration of minefield clearing apparatus constructed and operative in accordance with a preferred e~bodiment oP the present invention;
and Fig. 2 is a partially cut away side view illustration oP a magnetic mine exploding device useful in the apparatus of Fig. 1 in accordance with a preferred embodiment oP the present invention.
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DETAILED DESCRIPTION OF A PREFERRED EM~ODIMENT
Reference is now made to Fig. 1, which illustrates mine clearing apparatus constructed and operative in accordance with an embodiment of the present invention. As seen in the illustration, the mine clearing apparatus comprises a frame 1 including a pair of identical side portions 12, which are joined ' at their front end by a cross bar 14 and at their rear end support by an axle 16. Frame 10 is rigidly mounted onto an armoured vehicle, such as an M-60 tank, by engagement of pins 17 located at side portions 12 with towline lugs fixed onto the tank. Rigidity of mounting is provided by bolts 18 which engag;e the underside of the tank and force mounting plates 2~, fixedly mounted onto side portions 12 on the opposite side of pins 17, into tight engagement with the underside hull of the tank.
~ First and second arms 22 and 24 are independently rotatably mounted onto axle 16 and extend forwardly thereof in generally parallel planes. Arms 22 and 24 are strengthened by reinforcing elements 26 and 28 respectively which are t'ixed at one end thereof to the respective arlns and are rotatably mounted by means of cl~mps 30 and 32 onto axle 16.
Rigidly mounted onto each of arms 22 and 24 is a mine plowing assembly 34. Mine plowing assembly 34 comprises main plow portion 36 of generally elongate configuration and concave cross section.
The general configuration of main plow portion 36 may ,. ' ' ' ~ ' ' : ~. :
1~77~
be similar to that of an ordinary vehicle-powered snow plow, Disposed above main plow portion 36 and hinged thereonto is an auxiliary plow portion 38. Auxiliary plow portion 38 has two positions, a lowered position in which it extends forwardly of the surface of the main plow portion 36 and a raised position in which it defines an upper continuation of the surface of the main plow portion 36. This hinged construction is to obviate the problem of interference with a driver's field of vision or with the range of operation of the armament on a tank. Towards this end, the hinged auxiliary plow portion 38 may be lowered when the plowing assembly 34 is in its raised orientation.
Disposed below main plow portion 36 there are provided a plurality of vertically disposed planar blades 40, which during operation are disposed below the ground surface. The horizontal spacing between adjacent vertical blades is selected to be such that anti-vehicle mines will of necessity be engaged thereby. The blades are provided with an inclined forward surface, so as to raise mines located under the ground surPace into engagement with main plow poriton 36, so that they may be plowed aside.
A desired depth of operation for blades 4~ is determined by means of a ~liding surface assembly ~2 which is articulatedly nounted onto each oP arms 22 and 24. The gliding surface assembly 42 comprises a sled 44 which is arranged to slide on the ground surface and is formed at its front with a vertical blade 46 Por deflecting mines to the side thereof. Sled 44 is rotatably mounted onto a cam slot of a mounting plate 47.
~ounting plate 47 is mounted in turn onto a mounting element 48.
It is appreciated that sled 44 is permitted to undergo a somewhat .. . . ~ .
, ~' ' , ' ' :
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- ' 1~77~
complex articulated motion in a single plane within limits def`ined by the respective cam paths. This mounting arrangement permits selectable adjustment of the penetration depth of the plowing assembly 34 and also permits the sled 44 to be folded when the plowing assembly is in its raised orientation to eliminate interference with operation of the tank.
A chain 50 extends from each auxiliary plow portion 38 to a location on the tank hull. The length of the chain 50 is selected such that it is slack when the plowing assembly is in its raised orientation but becomes tight when the plowing assembly is lowered, thus pulling on auxiliary plow portion 38 and orienting it towards a generally vertical orientation. The full raised orientation of the auxiliary plow portion 38 is reached only when soil being plowed is forced thereagainst.
Apparatus for automatically lifting the mine plowing assembly is provided separately for each mine plow and comprises a freely rotatable disk 9~ which is bearing mounted onto a mounting member 92 which is bolted onto a tension wheel 94 of a tank. Tension wheel 94 engages the tread of the tank and maintains it at a desired tension. Mounted on an outer facing surface of disk 9~ are three outer pins 95, 96 and 97 and an inner disposed pin (not shown). Mounted on an inner facing surface of disk 9~ is a tooth 10~ which is disposed ordinarily out of engagement with corresponding interstices defined between plates of the tank tread.
Mounted on pin 95 is a lifting chain 99 which is attached at its other end to a location 1~2 fixed onto main plow ~ ~ ' ~7~ 6 portion 36. Mounted on pin 96 is a spring 1~4 which is attached at its other end to main plow portion 36, Spring 104 is operative when in the orientation illustrated in Fig. 2, to urge disk 90 to rotate about its axis in a clockwise direction.
The operation of all of the apparatus described hereinabove is described and illustrated in detail in U.S. Patent 4,467,694, the disclosure of which is incorporated herein by reference.
A weighted chain 120 is mounted between the two plowing assemblies to engage and detonate any mines that are encountered ln Pront of the intermediate portion of the tank at a safe distance from the tank.
In accordance with a preferred eDbodiment oP the invention, there is mounted onto the chain an element 200 for exploding magnetic mines of the type illustrated in Fig. 2.
The element of Fig. 2 preferably comprises a permanent magnet 21~, typically comprising one or more permanerlt Illagnets of conventional composition arranged along a longitudinal axis 212.
Permanent magnet 21~ is preferably magnetized in a direction perpendicular to longitudinal axis 212.
Surrounding permanent magnet 21~ on all sides there is provided a shock absorbing material 214 such as RTV rubber.
Surrounding the shock absorbing material 214 there is provided a rigid, impact-resistant cylindrical sleeve 216, formed of a paramagnetic material such as aluminum or any other suitable material such as plastic. Formed about sleeve 216 is a relatively thick layer 22~ of shock absorbing material, such as rubber.
The assembly is preferably held together by a pair oP
'. . ~ ~ .
~ : .
':
~'~77~'~6 end cl~lps 222, which are typically held together by elongate bolts 224, of paramagnetic material, which pass through material 214.
The assembly is rotatably mounted onto chain 12~ (~ig.
1) by means of bearing mounts 226, formed on either side of the magnet 21~, onto which are formed attachment members 22~ for attachment to chain 12~.
- It is a particular feature of the present invention that the assembly shown in Fig. 2 is mounted for rotatable engagement with a ground surface during movement of a tank onto which it is mounted, thus producing rotation of magnet 210 about its longitudinal axis whereby a varying magnetic field is produced in the vicinity of magnetic mines, producing detonation thereof at a safe distance in front of the tank.
It will be appreciated by persons skilled in the art that the present invention is not limited by what has been particularly shown and described hereinabove. Rather the scope of the present invention is def'ined only by the claims which follow:
' :: , .
: ' ~' `' ' '' :-.:
The present invention relates to apparatus for clearing mines and more particularly to mine clearing apparatus mountable on an armoured vehicle such as a tank.
BACKGROUND OF THE INVENTION
It is known in tank warfare to employ mine clearing apparat~s mounted on a vehicle for clearing a path through a mine-field.
There is described and claimed in U.S. Patents 4,491,~53 and 4,467,694, both to the assignee of the present application, mine field clearing apparatus mountable on a vehicle which comprises a pair of plows arranged in front of the treads , . .
of the vehicle. In Fig. 1 of both of the aforesaid U.S. Patents there is shown a weight in the general form of a "dog bone"
disposed on a chain which extends between the two plow sections joining same.
.
,, : . .
. .. : . ~ . . : -~ ~75'~
SUMMARY OF THE I~VENTION
The present invention relates to an element which may be employed in place of the "dog bone" weight illustrated in the aforesaid U.S. Patents of assignee.
There is thus provided in accordance with an embodiment of the present invention an element for exploding magnetic mines comprising a permanent magnet arranged for driven engagement with a ground surface thereby providing rotation thereof, the permanent magnet being disposed at a distance in front of a vehicle to be protected from mines, whereby action of the permanent magnet provides premature detonation of mines in the vicinity thereof at a safe distance in Pront of the vehicle.
Further in accordance with a preferred embodiment of the present invention, the permanent maBnet comprises at least one magnet arranged to define a longitudinal axis, the permanent magnet being magnetized in a direction perpendicular to its longitudinal axis, the magnet being arranged for driven engagement with the ground surface such that it rotates about its longitudinal axis.
Additionally in accordance with a prePerred embodiment of the present invention, the permanent magnet is enclosed in a shock resistant covering. Further in accordance with an embodiment of the invention, the shock resistant covering is surrounded by a rigid sleeve. Additionally in accordance with the invention, the rigid sleeve is surronded by a further impact .
. , , ~ .. . .
- ' :
- . . .~-: ' : -- :
: ~ . . ., . - .
: .
~, ' , ' ' ' ~
~.~.775~
resistant covering.
Further in accordance with an embodiment of the invention, the magnet is bearing mounted with respect to a olounting chain for relatively free rotation with respect thereto.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be understood and appreciated more fully from the following detailed description taken in conjunction with the drawings in which:
Fig. 1 is a pictorial top view illustration of minefield clearing apparatus constructed and operative in accordance with a preferred e~bodiment oP the present invention;
and Fig. 2 is a partially cut away side view illustration oP a magnetic mine exploding device useful in the apparatus of Fig. 1 in accordance with a preferred embodiment oP the present invention.
' ' - ' :
- ' . :
-. ' , .
, ~'~77~
DETAILED DESCRIPTION OF A PREFERRED EM~ODIMENT
Reference is now made to Fig. 1, which illustrates mine clearing apparatus constructed and operative in accordance with an embodiment of the present invention. As seen in the illustration, the mine clearing apparatus comprises a frame 1 including a pair of identical side portions 12, which are joined ' at their front end by a cross bar 14 and at their rear end support by an axle 16. Frame 10 is rigidly mounted onto an armoured vehicle, such as an M-60 tank, by engagement of pins 17 located at side portions 12 with towline lugs fixed onto the tank. Rigidity of mounting is provided by bolts 18 which engag;e the underside of the tank and force mounting plates 2~, fixedly mounted onto side portions 12 on the opposite side of pins 17, into tight engagement with the underside hull of the tank.
~ First and second arms 22 and 24 are independently rotatably mounted onto axle 16 and extend forwardly thereof in generally parallel planes. Arms 22 and 24 are strengthened by reinforcing elements 26 and 28 respectively which are t'ixed at one end thereof to the respective arlns and are rotatably mounted by means of cl~mps 30 and 32 onto axle 16.
Rigidly mounted onto each of arms 22 and 24 is a mine plowing assembly 34. Mine plowing assembly 34 comprises main plow portion 36 of generally elongate configuration and concave cross section.
The general configuration of main plow portion 36 may ,. ' ' ' ~ ' ' : ~. :
1~77~
be similar to that of an ordinary vehicle-powered snow plow, Disposed above main plow portion 36 and hinged thereonto is an auxiliary plow portion 38. Auxiliary plow portion 38 has two positions, a lowered position in which it extends forwardly of the surface of the main plow portion 36 and a raised position in which it defines an upper continuation of the surface of the main plow portion 36. This hinged construction is to obviate the problem of interference with a driver's field of vision or with the range of operation of the armament on a tank. Towards this end, the hinged auxiliary plow portion 38 may be lowered when the plowing assembly 34 is in its raised orientation.
Disposed below main plow portion 36 there are provided a plurality of vertically disposed planar blades 40, which during operation are disposed below the ground surface. The horizontal spacing between adjacent vertical blades is selected to be such that anti-vehicle mines will of necessity be engaged thereby. The blades are provided with an inclined forward surface, so as to raise mines located under the ground surPace into engagement with main plow poriton 36, so that they may be plowed aside.
A desired depth of operation for blades 4~ is determined by means of a ~liding surface assembly ~2 which is articulatedly nounted onto each oP arms 22 and 24. The gliding surface assembly 42 comprises a sled 44 which is arranged to slide on the ground surface and is formed at its front with a vertical blade 46 Por deflecting mines to the side thereof. Sled 44 is rotatably mounted onto a cam slot of a mounting plate 47.
~ounting plate 47 is mounted in turn onto a mounting element 48.
It is appreciated that sled 44 is permitted to undergo a somewhat .. . . ~ .
, ~' ' , ' ' :
.
- ' 1~77~
complex articulated motion in a single plane within limits def`ined by the respective cam paths. This mounting arrangement permits selectable adjustment of the penetration depth of the plowing assembly 34 and also permits the sled 44 to be folded when the plowing assembly is in its raised orientation to eliminate interference with operation of the tank.
A chain 50 extends from each auxiliary plow portion 38 to a location on the tank hull. The length of the chain 50 is selected such that it is slack when the plowing assembly is in its raised orientation but becomes tight when the plowing assembly is lowered, thus pulling on auxiliary plow portion 38 and orienting it towards a generally vertical orientation. The full raised orientation of the auxiliary plow portion 38 is reached only when soil being plowed is forced thereagainst.
Apparatus for automatically lifting the mine plowing assembly is provided separately for each mine plow and comprises a freely rotatable disk 9~ which is bearing mounted onto a mounting member 92 which is bolted onto a tension wheel 94 of a tank. Tension wheel 94 engages the tread of the tank and maintains it at a desired tension. Mounted on an outer facing surface of disk 9~ are three outer pins 95, 96 and 97 and an inner disposed pin (not shown). Mounted on an inner facing surface of disk 9~ is a tooth 10~ which is disposed ordinarily out of engagement with corresponding interstices defined between plates of the tank tread.
Mounted on pin 95 is a lifting chain 99 which is attached at its other end to a location 1~2 fixed onto main plow ~ ~ ' ~7~ 6 portion 36. Mounted on pin 96 is a spring 1~4 which is attached at its other end to main plow portion 36, Spring 104 is operative when in the orientation illustrated in Fig. 2, to urge disk 90 to rotate about its axis in a clockwise direction.
The operation of all of the apparatus described hereinabove is described and illustrated in detail in U.S. Patent 4,467,694, the disclosure of which is incorporated herein by reference.
A weighted chain 120 is mounted between the two plowing assemblies to engage and detonate any mines that are encountered ln Pront of the intermediate portion of the tank at a safe distance from the tank.
In accordance with a preferred eDbodiment oP the invention, there is mounted onto the chain an element 200 for exploding magnetic mines of the type illustrated in Fig. 2.
The element of Fig. 2 preferably comprises a permanent magnet 21~, typically comprising one or more permanerlt Illagnets of conventional composition arranged along a longitudinal axis 212.
Permanent magnet 21~ is preferably magnetized in a direction perpendicular to longitudinal axis 212.
Surrounding permanent magnet 21~ on all sides there is provided a shock absorbing material 214 such as RTV rubber.
Surrounding the shock absorbing material 214 there is provided a rigid, impact-resistant cylindrical sleeve 216, formed of a paramagnetic material such as aluminum or any other suitable material such as plastic. Formed about sleeve 216 is a relatively thick layer 22~ of shock absorbing material, such as rubber.
The assembly is preferably held together by a pair oP
'. . ~ ~ .
~ : .
':
~'~77~'~6 end cl~lps 222, which are typically held together by elongate bolts 224, of paramagnetic material, which pass through material 214.
The assembly is rotatably mounted onto chain 12~ (~ig.
1) by means of bearing mounts 226, formed on either side of the magnet 21~, onto which are formed attachment members 22~ for attachment to chain 12~.
- It is a particular feature of the present invention that the assembly shown in Fig. 2 is mounted for rotatable engagement with a ground surface during movement of a tank onto which it is mounted, thus producing rotation of magnet 210 about its longitudinal axis whereby a varying magnetic field is produced in the vicinity of magnetic mines, producing detonation thereof at a safe distance in front of the tank.
It will be appreciated by persons skilled in the art that the present invention is not limited by what has been particularly shown and described hereinabove. Rather the scope of the present invention is def'ined only by the claims which follow:
' :: , .
: ' ~' `' ' '' :-.:
Claims (12)
1. Apparatus for exploding magnetic mines comprising:
a permanent magnet disposed at a distance in front of a vehicle to be protected from mines and means for producing rotation of the permanent magnet thereby to cause premature detonation of mines in the vicinity thereof and without causing unacceptable damage to the vehicle or occupants of the vehicle.
a permanent magnet disposed at a distance in front of a vehicle to be protected from mines and means for producing rotation of the permanent magnet thereby to cause premature detonation of mines in the vicinity thereof and without causing unacceptable damage to the vehicle or occupants of the vehicle.
2. Apparatus according to claim 1 and also comprising a mounting chain for mounting said permanent magnet onto said vehicle and bearing means mounting said magnet with respect to said mounting chain for relatively free rotation with respect thereto.
3. Apparatus according to claim 1 and wherein said permanent magnet comprises at least one magnet arranged to define a longitudinal axis, the permanent magnet being magnetized in a direction perpendicular to the longitudinal axis, and the magnet being arranged for driven engagement with a ground surface such that it rotates about the longitudinal axis.
4. Apparatus according to claim 3 and wherein said permanent magnet is enclosed in a shock resistant covering.
5. Apparatus according to claim 3 and also comprising a mounting chain for mounting said permanent magnet onto said vehicle and bearing means mounting said magnet with respect to said mounting chain for relatively free rotation with respect thereto.
6. Apparatus according to claim 1 and wherein said permanent magnet is enclosed in a shock resistant covering.
7. Apparatus according to claim 6 and also comprising a mounting chain for mounting said permanent magnet onto said vehicle and bearing means mounting said magnet with respect to said mounting chain for relatively free rotation with respect thereto.
8. Apparatus according to claim 6 and wherein said shock resistant covering is surrounded by a rigid sleeve.
9. Apparatus according to claim 8 and also comprising a mounting chain for mounting said permanent magnet onto said vehicle and bearing means mounting said magnet with respect to said mounting chain for relatively free rotation with respect thereto.
10. Apparatus according to claim 8 and wherein said rigid sleeve is surrounded by an impact resistant covering.
11. Apparatus according to claim 10 and also comprising a mounting chain for mounting said permanent magnet onto said vehicle and bearing means mounting said magnet with respect to said mounting chain for relatively free rotation with respect thereto.
12. In combination with a vehicle including a pair of vehicle treads, mine clearing apparatus comprising:
means mounted onto the vehicle for raising and shunting aside mines in front of said vehicle treads and means disposed in front of said vehicle and intermediate said vehicle treads for exploding magnetic mines, comprising a permanent magnet disposed at a distance in front of the vehicle and means for producing rotation of the permanent magnet thereby to cause premature detonation of mines in the vicinity thereof without causing unacceptable damage to the vehicle or occupants of the vehicle.
means mounted onto the vehicle for raising and shunting aside mines in front of said vehicle treads and means disposed in front of said vehicle and intermediate said vehicle treads for exploding magnetic mines, comprising a permanent magnet disposed at a distance in front of the vehicle and means for producing rotation of the permanent magnet thereby to cause premature detonation of mines in the vicinity thereof without causing unacceptable damage to the vehicle or occupants of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000533343A CA1277526C (en) | 1987-03-30 | 1987-03-30 | Mine field clearing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000533343A CA1277526C (en) | 1987-03-30 | 1987-03-30 | Mine field clearing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1277526C true CA1277526C (en) | 1990-12-11 |
Family
ID=4135328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000533343A Expired - Fee Related CA1277526C (en) | 1987-03-30 | 1987-03-30 | Mine field clearing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1277526C (en) |
-
1987
- 1987-03-30 CA CA000533343A patent/CA1277526C/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |