HEAT-RESISTANT LOW-VOLTAGE NON-DESTRUCTIBLE ELECTRIC DETONATOR NOT CONTAINING INITIATING EXPLOSIVES Russian patent published in 2000 - IPC

FIELD: blasting devices for blast of explosives. SUBSTANCE: the body and bush accommodate an igniter, weighed portion of pyrotechnical substance, gas-generating charge of heat-resistant high explosive with a dispersity not exceeding 500 sq.cm/g, projectable plate consisting of two layers with different acoustic stiffness, plate boosting duct, receiving charge of heat- resistant high explosive with a dispersity at least of 5000 sq.cm/g. The plate layer is made of material with a higher acoustic stiffness and thickness of 1/5 to 1/10 of the layer thickness. The relation between duct diameter d and plate total thickness h makes up 3/2≤d/h≤2. EFFECT: enhanced initiating capacity, heat resistance and safety. 3 cl