SAFETY-DETONATING DEVICE Russian patent published in 2009 - IPC F42C19/08 

FIELD: explosive works.

SUBSTANCE: safety-detonating device contains the case with a cavity in which the electroigniter connected by isolated electricity cables with elements of the current feedthrough, the pyrostop is established, a cap-detonator and the combustion chamber. In the case the additional cavity with an oblique wall in which the contact plate connected by the isolated electricity cable with an element of the current feedthrough and a current-carrying ball is installed. The case is executed from two parts rigidly connected among themselves, one of which is executed from the isolating material, and another - from the current-carrying. The electroigniter is established in a cavity of the case from the isolating material which is connected to a cavity of the case from the current-carrying material. In the case from the isolating material the through aperture parallel to a vertical axis, in which the additional electroigniter is placed, it is connected by isolated electricity cables with fed-through current elements. The pyrostop is executed in a kind of the spring-actuated cursor established in a groove of the case from the current-carrying material and a cross-section flute executed on its lateral surface with oblique walls and coaxial with it by a through aperture in which the cap-detonator is established. The device contains the lock rod which one end face is executed rounded and resting against a cross-section flute of a cursor, and the second - in the form of a flange and is drawn in by the powder charge placed in a cavity of the cylindrical case, executed with ring groove on its external surface and with through radial apertures in a zone of the ring groove. The ring groove and through radial by apertures are placed in the combustion chamber, and the aperture in a cursor is executed not coaxial with an aperture in the case from isolating a material.

EFFECT: reliability of operation of the device increases.

9 dwg