Water-tight firing cap arrangement and method of making the same

摘要

A firing cap assembly has an interior percussion charge for producing a fire jet along a path in a predetermined direction which extends generally from one side of the assembly towards the other side thereof. The assembly is inserted into a casing having a base wall which extends across the path of the fire jet, and side walls which extend generally along the predetermined direction and which have bendable wall portions at said one side of the assembly. The casing and the assembly mounted therein are both inserted into a cavity of a firing cap carrier having bendable flange portions at said one side of the assembly. The flange portions are bent in direction generally transversely of the predetermined direction to a position in which the wall portions are located intermediate the flange portions and said one side of the assembly so as to form a corner region with said one side of the assembly. Sealing material is thereupon introduced into this corner region so as to prevent access of moisture to the percussion charge located at the interior of the assembly. The water-tight firing cap arrangement is thereby maintained in moisture-proof condition.