Shaped explosive charge device for underwater use
First Claim
1. A casing for a shaped explosive charge device comprising a hollow chamber for holding an explosive charge, said chamber having a liner wall presenting a convex surface to said chamber and a concave surface externally of said chamber, said liner wall defining an open base cavity of the shaped explosive charge, and, adjacent to the concave surface of said liner wall, an inflatable, flexible, impervious, collapsible element, said element in the uninflated condition being essentially wholly accommodated within the casing and upon inflation expanding in said casing and in a stand-off space outwardly of said casing to confine and seal a volume of gas occupying said cavity and the stand-off space for the explosive charge, said cavity being exposed to ambient fluid pressure which acts on or around said element.
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Accused Products
Abstract
A shaped explosive charge device for underwater use wherein a deflated inflatable element is positioned within the stand-off space and, when the device is in position for firing, for example, as an inside cutter, the inflatable element is inflated to exclude water from the cavity and stand-off space between the explosive charge and the target surface.
32 Citations
13 Claims
- 1. A casing for a shaped explosive charge device comprising a hollow chamber for holding an explosive charge, said chamber having a liner wall presenting a convex surface to said chamber and a concave surface externally of said chamber, said liner wall defining an open base cavity of the shaped explosive charge, and, adjacent to the concave surface of said liner wall, an inflatable, flexible, impervious, collapsible element, said element in the uninflated condition being essentially wholly accommodated within the casing and upon inflation expanding in said casing and in a stand-off space outwardly of said casing to confine and seal a volume of gas occupying said cavity and the stand-off space for the explosive charge, said cavity being exposed to ambient fluid pressure which acts on or around said element.
Specification