Fragmentation casing and method of making
AssigneeHug Interlizenz AG
InventorKarl Merz
Life of this patent
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Abstract
The fragmentation casing has a one-piece hollow body (1) that incorporates nominal break points; this hollow body (1) is divided at least in one section (4) by at least one separating cut (5) that forms a separating gap. The separating cut is so made that the hollow body remains in the form of 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 are so fixed in contact with each other.
Claims19
A fragmentation casing for an explosive device, said fragmentation casing comprising a one-piece hollow body (1), said one-piece body having a cylindrical portion (13) and a base portion (14), said cylindrical portion having inner and outer cylindrical surfaces, one of said inner or outer cylindrical surfaces being grooved to provide nominal break points upon explosion of the explosive device, a section of said cylindrical portion having at least one cut defined by first and second opposing surfaces, said cut extending in a substantially helical form along said section, said first opposing surface being substantially in engagement with said second opposing surface, said base portion being disposed at and closing one end of said cylindrical portion, said base portion being configured as an attachment element for a detonator head, and said cut extending to a point on said cylindrical portion located a short distance from said base portion.
A method of making a fragmentation casing, said method comprising the steps of:
- forming a one-piece hollow body, the hollow body having a cylindrical portion with inner and outer surfaces and a base portion, said base portion being disposed at and closing one end of said cylindrical portion, said base portion being configured as an attachment element for a detonator head;
- forming grooves on one of said inner and outer surfaces of the cylindrical portion;
- cutting a helical cut defined by first and second opposing surfaces along at least a section of the cylindrical portion;
- and
- engaging the first opposing surface to the second opposing surface.
A method as set forth in clam 14, wherein said step of forming a one-piece hollow body includes drawing and ironing a material into the shape of the cylindrical portion and the base portion.
Dependencies are inferred from the claim text.