Explosive entry and cutting device and a method of explosive entry and cutting
AssigneeCanadian Patents and Development Limited
InventorsRoy E. Gabriel, Alf G. Arneson
Life of this patent
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Abstract
This invention relates to an explosive-containing device for cutting dense material, the device being particularly useful in forced entry situations, e.g. in law enforcement situations or where an immediate entry into a burning building through its wall is required.
Claims15
A device for controlled demolition, cutting or breaking through a target, which comprises
- (a) a frangible backing element comprising a layer of a substantially incompressible innocuous material, the layer and the backing element being V-shaped in cross-section thus defining two legs and a cavity therebetween, and
- (b) an explosive charge having in cross-section a V-shape generally corresponding to the V-shape of the cavity of the backing element, the explosive charge being accommodated and secured in the cavity in mating relationship to said element,
- (c) the legs of the backing element being adapted to contact the surface of the target so that the explosive charge is positioned between the backing element and the target,
- (d) the V-shape of the backing element and of the charge being such as to cause the energy of the explosive charge, when exploded, to be reflected partly by the backing element towards the target and concentrate the energy substantially in a place between the legs of the backing element.
A method of controlled demolition, cutting or breaking a target which comprises the steps of contacting a device comprising a frangible backing element and an explosive charge with an object to be broken or cut, the backing element comprising a layer of a substantially incompressible innocuous material, both the element and the charge being of a matching V-shape in cross section defining two legs and a cavity therebetween with the explosive charge being accommodated and secured in the cavity, positioning the device so that the cavity and the explosive charge face the object and the legs of the backing element abut its surface, and then detonating the explosive charge.
Dependencies are inferred from the claim text.