Rapid area clearance of explosives

• US 5,223,661 A
• Filed: 05/01/1992
• Issued: 06/29/1993
• Est. Priority Date: 09/21/1990
• Status: Expired due to Fees

• Current Assignee: Technology International Incorporated
• Original Assignee: Technology International Incorporated
• Inventors: Sabri, Zeinab A.
• Primary Examiner(s): BROWN, DAVID
• Application Number:
  US07/877,198
• Time in Patent Office: 424 Days
• Field of Search: 89/1.11, 89/1.13, 89/1.1, 86/50, 102/402
• US Class Current: 89/1.13
• CPC Class Codes: F42B 33/06 Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs F42B33/004 and F42B33/04 take precedence; elimination of undesirable components of explosives C06B21/0091

Abstract

A system and process for neutralizing unexploded ordnances and clearing explosive infested areas such that maneuvers can be both readily and confidently continued without significant delay is disclosed. The system clears such unexploded ordnances infested areas by initially spraying the explosive infested area with a cryogenic liquid to neutralize the unexploded ordnances and reduce an output voltage of a detonator of the unexploded ordnances thereby rendering the unexploded ordnances inert, gathering the now unexploded ordnances and submerging the inert unexploded ordnances in a tank containing the same or similar cryogenic liquid so that the unexploded ordnances are maintained in a neutralized and inert state to allow for disposal. Alternatively, the neutralization of unexploded ordnance and clearing of explosive infested areas may be carried out by spraying the explosive infested area with liquefied methane to neutralize the unexploded ordnance and reduce an output voltage of a detonator of the unexploded ordnances to render such ordnance inert, igniting the liquefied methane, deflagrating the unexploded ordnances at a temperature less than that required for detonation and subsequently removing the neutralized ordnances from the explosive infested area.

Claims

1. A system for neutralizing unexploded ordnance and clearing explosive-infested areas comprising:

dispersion means for dispersing a cryogenic liquid about the explosive-infested area to render the unexploded ordnance inert;

gathering means for gathering the inert unexploded ordnance; and

removal means for removing the unexploded ordnance from the explosive-infested area.

2. The system as defined in claim 1, wherein said cryogenic liquid is liquid air.

3. The system as defined in claim 1, wherein said cryogenic liquid is liquid nitrogen.

4. The system as defined in claim 1, wherein said cryogenic liquid is liquid methane.

5. The system as defined in claim 4, further comprising an igniting means for igniting the liquefied methane and deflagrating the unexploded ordnance at a temperature less than that required for detonation.

6. The system as defined in claim 5, further comprising a launching means for launching the igniting means into the explosive-infested area having the liquefied methane dispersed thereon.

7. The system as defined in claim 5, wherein said igniting means is a canister containing a flammable liquid and an adhesive agent.

8. The system as defined in claim 7, wherein said adhesive agent is rubber.