MECHANICAL FUSE Russian patent published in 2013 - IPC F42C9/00 

FIELD: blasting.

SUBSTANCE: comprises an impact mechanism comprising a central inertial bushing with a spring-loaded axial sting, coaxially to which there is a lead charge arranged being installed in a mounting body and separated from a detonator cap in a rotary gate. In the body there is also a percussion cocking mechanism, an igniter of which communicates with pyrotechnical charges of the detonator cap of self-destruction. The spring-loaded bolt of the remote cocking mechanism installed in a guide cylinder is equipped with a powder stop and is kinematically connected to a rotary gate, bearing the detonator cap. At the same time in the radial slot of the gate there is a centrifugal pusher interacting with a plate spring. The axial sting is installed in a settling ring mounted in the inertial bushing and kinematically connected by means of plate latches resting against a radial collar of the inertial bushing as capable of relative longitudinal displacement under action of a striker. Besides, between the striker and the bushing there are radial levers jammed. The striker is equipped with an automatic valve made in the form of a throttling device.

EFFECT: improved functional reliability of a head fuse due to minimised necessary moving working force for an axial sting and increased sensitivity of fuse actuation.

2 cl, 5 dwg