Patent ID: 9016203
Filing Date: 2015-04-28
Classification: F42C

Abstract:
1. A propellant charge igniter comprising: (a) a sleeve base; (b) a propellant charge igniter tube connected to the sleeve base, wherein the propellant charge igniter tube has a plurality of bores on an outer periphery of the propellant charge igniter tube, wherein each bore has an outwardly oriented edge, and wherein the outwardly oriented edges are formed during hydroforming of the bores; and (c) a vulcanized material coating on an external surface of the propellant charge igniter tube, wherein the vulcanized material coating includes portions disposed in the bores, and wherein the outwardly oriented edges are formed to locally weaken and facilitate breakage of the vulcanized material coating and ensure a reproducible flaking of the vulcanized material coating from the propellant charge igniter tube; wherein the propellant charge igniter tube is connected to the sleeve base via friction welding.