DETONATION DEVICE WITHOUT PRIMARY EXPLOSIVE Russian patent published in 1998 - IPC

FIELD: devices for initiation of blast transformation, in particular, detonators, applicable for creation of blast nets in commercial blasting operations. SUBSTANCE: detonating device has an ignition device with a fastener, body with an air chamber accommodating the main charge and intermediate shell enclosing the igniting component and initiating charge; the end surface of contact of the igniting component and initiating charge is made in the form of surface of revolution; whose axis is aligned with the axis of symmetry of the device on the whole, and the top of the surface faces the ignition device. Placed between the initiating and main charges is an intermediate charge of secondary explosive coated with a layer of glass particles. EFFECT: enhanced stability of functioning and accuracy of retardation in detonators of short-retarded action. 19 cl, 4 dwg