Delay detonator device

Claim 1

A delay detonator device adapted for use at elevated temperatures approaching 600° F., comprising: a cylindrical body having an internal chamber, one end of which communicates with an elongated bore of smaller inside diameter, the interface between the end of said chamber and said elongated bore defining an annular shoulder; an impactor disk abutting said shoulder within said chamber; a donor charge of a mixture of titanium hydride and potassium perchlorate located adjacent said impactor disk within said chamber; a delay charge of pyrotechnic material having a slow burning characteristic positioned adjacent said donor charge within said chamber; a high temperature acceptor charge positioned within said body at the downstream end of said bore; a header backing material positioned adjacent said delay charge and having a bridge wire with electrical conductors connected at opposite ends thereof, said conductors passing through said header backing material and extending outwardly of said detonator device, said body portion near said header being swaged to tightly confine said header and said donor and delay charges; and, ignition of said delay charge by said bridge wire causing said donor charge to be ignited after a predetermined delay time period, the burning of said donor charge creating high pressure that shears the central portion of said impactor disk interiorally of said shoulder and accelerates the same down said bore into igniting impact with said acceptor charge.