INITIATING DEVICE Russian patent published in 2003 - IPC

FIELD: blasting devices designed for initiation of explosives used for blast operation. SUBSTANCE: the initiating device consists of a section of a percussion-wave tube and a primer detonator interconnected with the aid of a crimper through an elastic seal and has a bush of a strong heat-resistant material positioned in the duct of the percussion-wave tube in the area of the crimper. The bush geometric dimensions are determined from relations 200>L/D>14 and 15>Dt>10, where L - the bush length, D - the bush diameter, t - the thickness of the bush wall, the bush is used of a strong, heat-resistant and corrosion-resistant material, non-reacting with explosive, for example, a metal alloy. EFFECT: enhanced reliability in operation, storage and transportation. 1 dwg