Remote explosive separation tool

Patent metadata

Field	Value
Publication number	US-12416478-B1
Application number	US-202418933116-A
Country	US
Kind code	B1
Filing date	Oct 31, 2024
Priority date	Oct 31, 2024
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

Exemplary embodiments of apparatus and methods for remotely and explosively cutting the casing of a UXO and separating the fuzing components from the main charge in the UXO. A remote explosive separation tool creates a Linear Explosively Formed Projectile (LEFP) charge to separate fuzing components from live explosive threats in UXO, for example only, a 155 mm artillery round. The tool functions by explosively deforming a copper liner into a linear projectile or penetrator which then impacts the UXO casing. The speed of impact enables the fuzing elements of the UXO to be removed from the main charge of the UXO either by directly cutting the fuze elements off or by imparting the fuze elements with enough momentum such that they break off. The process of dismembering the fuze elements occurs without detonating the main charge of the UXO. The tool may be remotely placed by an unmanned vehicle.

First claim

What is claimed is:

1. A remote explosive separation tool for forming a Linear Explosively Formed Projectile (LEFP), comprising:
a housing in the shape of a rectangular prism, the housing includes an open front, two opposing side walls, a rear wall, and top and bottom walls;
a detonator well being located on the housing;
a quantity of C-4 explosive being packed in the housing and extending from the top wall to the bottom wall;
a linear concave copper liner being disposed adjacent to the quantity of C-4 explosive and extending from the top wall to the bottom wall, the linear concave copper liner faces the open front of the housing and includes an elliptical cross-section;
a pair of parallel stand-off wands extending from respective opposing side walls midway between the top and bottom walls, the pair of parallel stand-off wands extends perpendicular to a plane of the open front and includes, at distal ends, visual indicators for identifying a point of impact of the LEFP;
a base interface being attached to the bottom wall of the housing for attaching the housing to a base, the base being configured to contact a ground surface and stably support the tool so that the tool does not tip over prior to detonation of the quantity of C-4 explosive; and
an unmanned vehicle interface being attached to the top wall of the housing for attaching the tool to an unmanned vehicle grip.

2. The remote explosive separation tool of claim 1 , wherein the point of impact of the LEFP corresponds to a projection of a geometric center of the open front of the housing to a second point that is midway between the distal ends of the stand-off wands.

3. The remote explosive separation tool of claim 1 , wherein the housing is a plastic housing.

4. The remote explosive separation tool of claim 1 , wherein the base interface includes one part of a dovetail joint and the base includes another part of a dovetail joint.

5. The remote explosive separation tool of claim 1 , wherein the quantity of C-4 explosive is about 1.25 pounds.

6. The remote explosive separation tool of claim 4 , wherein the unmanned vehicle interface includes one part of a dovetail joint and the unmanned vehicle grip includes another part of the dovetail joint.

7. The remote explosive separation tool of claim 1 , wherein the unmanned vehicle grip is one of an inline ground robot grip, a sideways ground robot grip, and an unmanned aerial vehicle grip.

8. The remote explosive separation tool of claim 1 , wherein the base is one of a flat static stand, an angled static stand, and an articulating stand.

9. The remote explosive separation tool of claim 1 , further comprising a pair of wand holder sleeves being located on respective opposing side walls of the housing, wherein proximal ends of the pair of parallel stand-off wands are disposed in respective ones of the pair of wand holder sleeves.

10. The remote explosive separation tool of claim 9 , wherein the visual indicators at the distal ends of the pair of parallel stand-off wands include whiskers and a bullseye.

11. A method of separating fuzing components from a main charge in unexploded ordnance (UXO), comprising:
providing the remote explosive separation tool of claim 1 ;
creating a Linear Explosively Formed Projectile (LEFP) from the linear concave copper liner having the elliptical cross-section; and
directing the LEFP at the UXO and separating the fuzing components from the main charge without at least one of setting off and detonating the main charge.

12. The method of claim 11 , further comprising transporting the remote explosive separation tool to a location near the UXO, using an unmanned vehicle.

13. The method of claim 12 , further comprising, using the unmanned vehicle, aiming the remote explosive separation tool at the UXO.

14. The method of claim 12 , further comprising, using the unmanned vehicle, aiming the remote explosive separation tool at the UXO, wherein the UXO includes a steel casing, and wherein the Linear Explosively Formed Projectile (LEFP) penetrates the steel casing.

15. The method of claim 12 , further comprising, using the unmanned vehicle, aiming the remote explosive separation tool at the UXO, wherein the UXO includes a steel casing, wherein the Linear Explosively Formed Projectile (LEFP) penetrates the steel casing, wherein the UXO is a 155 mm projectile.

16. A remote explosive separation tool for forming a Linear Explosively Formed Projectile (LEFP), comprising:
a housing including an open front, two opposing side walls, a rear wall, and top and bottom walls;
a quantity of C-4 explosive being packed in the housing;
a linear concave copper liner being disposed adjacent to the quantity of C-4 explosive, the linear concave copper liner faces the open front of the housing and includes an elliptical cross-section;
a pair of parallel stand-off wands extending from respective opposing side walls, the pair of parallel stand-off wands includes at distal ends, visual indicators to identify a point of impact of the LEFP;
a base being attached to the bottom wall of the housing, the base is configured to contact a ground surface and stably support the tool so that the tool does not tip over prior to detonation of the quantity of C-4 explosive; and
an unmanned vehicle interface being attached to the top wall of the housing for attaching the tool to an unmanned vehicle grip.

17. The remote explosive separation tool of claim 16 , further comprising a pair of wand holder sleeves being located on the respective opposing side walls of the housing, wherein proximal ends of the pair of parallel stand-off wands are disposed in respective ones of the pair of wand holder sleeves.

18. The remote explosive separation tool of claim 17 , wherein a proximal end of each stand off wand includes a barb that contacts the rear surface of the housing.

19. The remote explosive separation tool of claim 16 , wherein the base is one of a flat static stand, an angled static stand, and an articulating stand.

20. The remote explosive separation tool of claim 16 , wherein the unmanned vehicle interface includes an unmanned vehicle grip for one of an inline ground robot, a sideways ground robot, and an unmanned aerial vehicle.

Assignees

• The United States Of America Represented By The Secretary Of The Navy
• Us Navy

Inventors

• Shattuck Michael
• Mccarthy Daniel
• Foltz Lee
• Pegouske Adam

Classifications

• F42D5/04

  Rendering explosive charges harmless, e.g. destroying ammunition ({F42B39/14 and F42B39/20 take precedence } ; extracting primers, dismantling ammunition F42B33/04, F42B33/06 {; chemical deactivating of explosives C06B21/0091}); Rendering detonation of explosive charges harmless · CPC title

• F42B33/06 Primary

  Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs ({F42B33/004 and} F42B33/04 take precedence; {elimination of undesirable components of explosives C06B21/0091}) · CPC title