HOLLOW CHARGE Russian patent published in 1997 - IPC

FIELD: destruction of rocks by charges of directed action. SUBSTANCE: explosive 1 is placed into shell 2 with hollow recess 3 made in the form of central V-shaped members 4 and additional V-shaped recesses 5 mated to them. Additional recesses 5 form together with central members 4 nonconvex polygon which internal vertexes 12 lie in base of charge. Planes 6 of additional recesses 5 are limited by sides lying in base of hollow recess 3. Planes 6 of additional recesses 5 cross side surface of shell 2 by sides 7 they limit side surface of side of base of recess 3. EFFECT: simplified design of hollow charge. 3 dwg