IMPACT FUSE PRIMING CHARGE Russian patent published in 2010 - IPC F42C19/10 

FIELD: blasting works.

SUBSTANCE: invention relates to impact fuse priming charges operated by preset mechanical force. Device casing comprises stepped cylindrical firing pin, deformable element, primer cap, axial channel, transfer charge and priming grain. Said firing pin is arranged on deformable element surface so that firing pin and step face surface are buried relative to casing face surface. Said firing pin is locked by nut in said casing to be screwed thereon and furnished with web with the hole that features diametre equal to smaller diametre of stepped cylindrical firing pin. Priming cap is made from high explosive with grain size of explosive crystalline particles making at least 0.2 mm, while transfer charge represents a grain made up of at least three weights of high explosive fitted in casing at normalised load.

EFFECT: higher safety in assembly and operation.

1 dwg