STICK FOR ROCK BREAKING AND BATTERY CUP PRIMER Russian patent published in 2015 - IPC F42D1/45 F42B3/11 F42B3/26 

FIELD: blasting operations.

SUBSTANCE: invention relates to sticks for rock breaking. The stick comprises a crushing powder charge and a battery cup primer with the ignition powder charge in the sleeve of the ignition device, which has no mechanical strength which would be required for explosion of the ignition powder charge in open air when ignited. In the stick for rock breaking there is also a sleeve of the ignition unit, which surrounds the sleeve of the ignition device when the stick for rock breaking is charged. The unit that surrounds the crushing powder charge and which comprises a sleeve of the ignition device, and the sleeve of the ignition unit have together sufficient strength to produce sufficient pressure in the unit to blast the ignition powder charge and to form the flame jet, as well as the impact on the sleeve of the ignition unit by pressure and the flame jet, at that the said flame jet ignites the crushing powder charge.

EFFECT: invention enables to produce sticks that are able to be ignited without the use of detonator, containing any detonating substance.

22 cl, 10 dwg