Patent ID: 6463855
Filing Date: 2002-10-15
Classification: F42C

Abstract:
A fuse device for a mortar shell including:a safety element movable-from a safety position to an armed position; a spring for producing such movement; a spring-stressing mechanism for storing energy in the spring to produce the movement, the spring-stressing mechanism comprising an impeller arranged in an air flow path to be rotated by an air flow generated in response to travel of the mortal shell toward a target, the impeller operably connected to the spring for stressing the spring in response to being rotated by the air flow; a rotation transmission mechanism actuable for transmitting rotation from the impeller to the spring to stress the spring; and a holder for holding the rotation transmission mechanism against actuation and for releasing the rotation transmission mechanism for actuation in response to firing of the mortar shell, the holder comprising a safety plate held by arming pins in a position for preventing actuation of the rotation transmission mechanism, the arming pins arranged to release the safety plate in response to rearward inertia produced by firing of the mortar shell.