Patent ID: 8899156
Filing Date: 2014-12-02
Classification: F42B

Abstract:
1. A stun grenade comprising: a housing comprising an externally threaded extension on a top; a cylindrical receptacle comprising internal threads on a top, a bottom hole, and a hollow externally threaded member secured to the internal threads; an air canister disposed in the receptacle; an internally threaded cap threadedly secured to both the externally threaded extension and the hollow externally threaded member, the internally threaded cap comprising a top opening, and a bifurcation disposed on a top of the internally threaded cap, the bifurcation including two opposite through holes in an intermediate portion, and two opposite first pivot holes in a rear portion; a striker unit comprising a striker and a spring loaded hinge pivotably fastened between the first pivot holes; a needle inserted through the hollow externally threaded member to have one end engaged with the air canister and an other end projecting out of the top opening; a lever having a front end pivotably secured to a front end of the bifurcation and comprising two opposite second pivot holes at an intermediate portion; and a safety pin inserted through the second pivot holes and the through holes to anchor the needle below; wherein in response to a removal of the safety pin, the lever is unlocked to turn the spring loaded hinge so that the striker hits and pushes down the needle which punctures the air canister to release compressed air from the air canister into the receptacle, the compressed air flows out of the receptacle into the housing via the bottom hole, the pressure in the housing increases constantly, and the housing explodes when the pressure reaches a predetermined value.