Patent ID: 7690305

Claim:
An increment charge for mounting to a fin-stabilized mortar projectile, the increment charge comprising: a U-shaped body having a U-shaped upper side and a U-shaped lower side, the U-shaped body defining a substantially centrally located space and a mounting opening extending from the space to an edge of the increment charge to allow the increment charge to be mounted around a substantially cylindrical tail shaft of a mortar projectile having guiding fins adjacent to the tail shaft, the opening being smaller in width than the centrally located space; a first protrusion protruding above the U-shaped upper side of the U-shaped body and a second protrusion protruding above the U-shaped lower side of the U-shaped body opposite the first side; each of the first and second protrusions being dimensioned to be receivable by the mounting opening such that the first and second protrusions can be received by a mounting opening of an identical adjacent increment charge when the centrally located spaces of the increment charges are aligned with one another; wherein the first protrusion is dimensioned with respect to the mounting opening such that the first protrusion can be tightly fitted within an inner surface of a mounting opening of an adjacent like increment charge so that the increment charges can become locked in relation to one another.