INITIATOR WITH ACTUATION TEMPORARY DELAY AND METHOD OF ITS ASSEMBLY Russian patent published in 2017 - IPC F42D1/45 F42C19/12 F42B3/195 F42B3/10 

FIELD: blasting works.

SUBSTANCE: device contains the shell with the slow down charge, made of three parts, at that one of the end parts, being made in the form of the cap, fitted with the blasting explosive composition, the burning speed of which exceeds the burning speed of the intermediate part composition, made with the sections of different cross section, the section of larger cross section is located from the cap side. The other extreme part and the intermediate part are made of the same incendiary material. The intermediate part is made with the sections of different cross section. The section of the smaller cross-section is placed in the sleeve, which is tightly installed in the shell, the height of which is selected depending on the required deceleration time, and the section of the larger cross section is adjacent to the sleeve and is made with the diameter corresponding to the diameter of the sleeve, exceeding at least twice the section diameter of the smaller cross section. The assembly method involves the stepwise formation of the decelerating charge, which begins with the extreme parts formation.

EFFECT: assembly use of technology increase, while providing the high reliability of actuation.

2 cl, 1 dwg