US Patent 7490537 Suppression apparatus for explosive devices

A suppression apparatus for a suspected explosive device comprising a container which surrounds a cavity, wherein the container is shaped such that when filled with liquid, the liquid has an outer boundary of cylindrical shape and an inner boundary of frusto-conical shape wherein the slope of the inner boundary relative to the outer boundary is of such magnitude to create a variation in the thickness of the liquid between the inner and outer boundaries which renders the shot line through the liquid of an explosion from an explosive device to be about uniform when the explosive device is located in the cavity on a surface on which the container sits.