This patent discloses a novel shaped charge device that produces a hollow cylindrical jet capable of creating a hole in a target larger than the overall diameter of the device.
This patent discloses a novel axisymmetric revolved arc explosively formed projectile (REFP) shaped charge design will produce a projectile that is greater than 2/3 the diameter of the device forms a hole larger than the device diameter and removes all of the target material within the hole diameter.