Ammunition and explosives – Shells – Shrapnel
Patent
1989-06-14
1992-03-17
Tudor, Harold J.
Ammunition and explosives
Shells
Shrapnel
102389, 29 121, 21912169, F42B 1224, B21K 2106
Patent
active
050958216
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL DOMAIN
The present invention relates to a fragmentation casing for an explosive device, in particular for a projectile, a grenade, or a mine, with a one-piece hollow body that incorporates nominal break points. In addition, the present invention relates to a process for the production of such a fragmentation casing.
PRIOR ART
It is known that projectiles, grenades, or mines can be fitted with a fragmentation casing that is configured as a hollow body that contains an explosive bursting charge and which, on detonation, is intended to shatter into the greatest possible number of fragments. In order to facilitate this fragmentation, the fragmentation casing usually incorporates nominal break points If, however, these nominal break points are in the form of grooves in the fragmentation casing, some of the potential total mass of the fragmentation casing (in relation to its size) is lost. The following methods, amongst others, have been used in order to avoid this mass decrement, at least in part:
In order to produce a fragmentation casing, wire of square cross-section, as well as with previously made notches transverse to its longitudinal axis on one (EP-B1-0 030 809) or two (US-H238) sides has been wound into a spiral such that the coils so formed were closely adjacent, so that there was no gap between them and no mass was lost. The coils were then joined to each other by soldering (EP-B1-0 030 809) or by laser welding (US-H328). DE-OS 32 21 ,565 also describes a spiral fragmentation casing. DE-U1-84 27 962.1 describes a fragmentation casing that consists of rings of rectangular cross-section that are arranged on a supporting body instead of being closely adjacent. DE-U1-84 27 781.5 describes a warhead with cracks in the warhead housing that result from grooves machined into the wall of the warhead housing, by upsetting the warhead housing.
However, the production of all the above types of fragmentation housings, in particular those with rings, is extremely costly.
DESCRIPTION OF THE INVENTION
It is the task of the present invention to describe a fragmentation casing of the type described heretofore, it being possible to produce this with far less labour and in a more rational manner.
According to the present invention, this task has been solved by a fragmentation housing having the distinguishing features set forth below. The underlying concept of this solution is that the hollow body is slit in at least one section by at least one separating cut that forms a separating gap, the separating cut being so made that the hollow body remains as a one-piece structure. The surfaces of the separating cut that are adjacent in the separating gap are brought into contact with each other and then fixed when in contact with each other.
Advantageous and preferred embodiments of the present invention are set forth below.
Additionally, it is the task of the present invention to describe a process that is particularly suitable for the production of such a fragmentation housing.
This task has been solved by a process as described below.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described below on the basis of examples shown in the drawings appended hereto These drawings show the following:
FIG. 1: A hollow body in the form of a hollow cylinder, the casing of which is divided equally into coils between two end sections by a separating cut, said coils being spaced by being drawn apart from each other.
FIG. 2: A hollow body as in FIG. 1, this being compressed, however, so that the coils rest against each other.
FIG. 3: A cross-section through a hollow body as in FIG. 2, in which, however, the adjacent edges of the separating cut are partially joined to each other by welding on the outer periphery.
FIG. 4: A hollow body as in FIG. 2, but in which the adjacent edges of the separating cut are partially connected to each other by discontinuous welding on the outer periphery.
FIG. 5: A cross-section through a hollow body as in FIG. 2, but with a supporting sleeve inserted therein.
FIG. 6: A cross-section o
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Hug Interlizenz AG
Tudor Harold J.
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