Patent ID: 8656837
Filing Date: 2014-02-25
Classification: F42C

Abstract:
1. A MEMS safety and arming device for projectiles that each include a detonator and an explosive, said safety and arming device comprising: a body; a slider mobile between: a) a safety position in which the detonator is isolated from the explosive, and b) an arming position in which the detonator is able to communicate with the explosive; and at least one inertial lock; wherein the slider is configured to be mobile under the effect of a centrifugal acceleration with respect to the body, wherein the slider is immobilized in said safety position by the at least one inertial lock configured to release the slider when moving in an unlocked position in which the at least one inertial lock is blocked by a blocking system, wherein said at least one inertial lock includes a counterweight having at least one straight groove whose longitudinal axis is parallel to a direction of movement of said at least one inertial lock, wherein a fixed guiding pin is positioned in said groove, said guiding pin being integral with said body, wherein said groove is of a length sufficient to allow the displacement of said counterweight with respect to said guiding pin, and wherein a hooking system is integral with said counterweight, and said slider is maintained in said safety position by said hooking system.