Patent ID: 6896204
Filing Date: 2005-05-24
Classification: F41B,F42B

Abstract:
1. A water jet producing device, comprising: a tube having a slug of water therein; a burst diaphragm proximate to the slug of water; a pusher plate proximate to the slug of water and opposite to the burst diaphragm; a breech charge proximate to the pusher plate wherein initiation of the breech charge produces breech gases; said tube having a bore end, having an inner diameter; an extension tube, comprising: an inner diameter; a first end, having an inner diameter greater than the inner diameter of the bore end, wherein the inner diameter of the extension tube decreases when moving away from the first end until the inner diameter of the extension tube approximately equals the inner diameter of the bore end; a volume sufficient to hold the water slug; means for attaching the first end of the extension tube to the bore end; and, at least one aperture located within the extension tube, proximate the attaching means wherein the breech gases vent through the at least one aperture.