NOSE FUSE Russian patent published in 2003 - IPC

FIELD: time combination double-action, direct impact fuses for small-caliber artillery cartridges. SUBSTANCE: the nose fuse has a body accommodating a percussion-primer, firing pin, delay bush, safety device, ray detonator and a self-destruction mechanism. The firing pin has an inertial arming mechanism including a spiral lock, impact reaction mechanism and a central rod with a support head. A longitudinal groove is made in the body, in which a ring bushing is installed on a transverse crosspiece with the spiral lock placed inside it. The impact reaction mechanism has a safety diaphragm secured at the end of the body. The self-destruction mechanism has a pyrotechnical channel connecting it with the ray detonator. The support head of the central rod has a rounded-off shape for rigid fixing from the top the safety diaphragm made in the form of a tapered fairing. Made under the tapered fairing in the body is a peripheral annular groove and radial inclined slots for connection of balls placed in them with the firing pin. EFFECT: enhanced functional reliability of the fuse, all-weather use of the fuse. 9 dwg