PROTECTIVE COMPONENT AGAINST SMALL ARMS BULLETS Russian patent published in 1999 - IPC

FIELD: armored constructions that can be used in means of individual protection in transport and other facilities against the action of small arms bullets. SUBSTANCE: the protective component comprises a ceramic layer installed on a backing, hangs are installed at the edges of the ceramic layer, and the backing rigidity changes from the center to the edges: the minimum - in the center, the maximum - in the area of the hinges, notable for the fact that the backing is composed of two parts with an additional layer placed between them, this layer is made of plates with ribs directed towards each other and fastened by flexible catches; the additional layer is enclosed in an elastic shell of highly strong material and rigidly connected through the shell to each part of the backing; the thickness of the rear part of the backing makes up not more than 2/3 of the thickness of its part adjoining the ceramic layer, and the thickness of the additional layer is selected from relationship h₁/(h₂-h₃) ≤ 1, where h₁-thickness of the additional layer, mm; h₂ - thickness of the ceramic layer, mm; h₃ - thickness of the backing part adjoining the ceramic layer, mm. EFFECT: absence of penetration of bullets and products of their interaction with the protective component behind its rear surface at a thickness of the protective component not exceeding 25 mm and surface density not exceeding 45 kg/sq m; impact momentum is stretched to the permissible levels, which prevents construction injuries and damage of protected objects. 2 dwg, 1 ex