GEAR FOR REMOTE INITIATION OF EXPLOSIVE CHARGES Russian patent published in 2000 - IPC

FIELD: detonation devices for remote initiation of explosive charges, predominantly, blast-hole charges while driving workings by drill and blast heading machine. SUBSTANCE: gear thrown to object to be initiated includes explosive charge of oxyliquid carrying carbon black with quartz sand and liquid oxygen. Charge houses perforated disc separating thin layer of oxyliquid from the rest of volume of explosive. Rod made fast to disc and perpendicular to it rests with its butt against cylindrical inertial body which end face carries explosive charge. Diameter of explosive charge of cylindrical shape is less than that of cylindrical body made of inert material. EFFECT: increased sensitivity of charge to shock, provision for self-liquidation of oxyliquid charge if detonation fails. 2 dwg