Insensitive munitions swaged vent plug

Patent metadata

Field	Value
Publication number	US-9964387-B2
Application number	US-54393809-A
Country	US
Kind code	B2
Filing date	Aug 19, 2009
Priority date	Aug 19, 2009
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A venting system for ordnance or rocket motors comprising a casing having at least one hole and a plug, the plug being formed from a plug slug swaged into the at least one hole. A method to fill a vent hole in a casing comprising transforming a plug slug positioned within the vent hole into a plug.

First claim

What is claimed is:

1. An apparatus comprising:
a casing defining a vent opening;
an energetic material contained in said casing; and
a non-threaded metal plastically deformed plug oriented in said vent opening, said plug sealing said vent opening,
wherein said casing is selected from the group consisting of an ordnance casing and a rocket motor casing.

2. The apparatus of claim 1 , wherein a melting temperature of said plug is less than a melting temperature of said casing.

3. The apparatus of claim 1 , said plug occupying the entire vent opening.

4. The apparatus of claim 1 , wherein said plug is formed by a process of crimping or swaging.

5. The apparatus of claim 4 , wherein said process comprises providing a slug, orienting at least a portion of said slug in said vent opening and applying pressure to said slug, thereby deforming said slug to form said plastically deformed plug.

6. The apparatus of claim 5 , wherein said deforming causes a portion of said slug to become oriented in said vent opening.

7. The apparatus of claim 1 , wherein said apparatus is an insensitive munition.

8. The apparatus of claim 1 , wherein said plug is constructed and arranged to seal said vent opening until said plug melts out.

9. The apparatus of claim 1 , wherein said plug and said vent opening form a venting system, said venting system reducing unplanned ignition of said energetic material.

10. The apparatus of claim 1 , said plug having a plug thickness equal to or greater than said thickness of said vent opening.

11. The apparatus of claim 1 , said vent opening including a groove in said wall, said groove having a groove thickness less than the thickness of said vent opening and a groove width greater than a width of said vent opening, wherein at least a portion of said plug is oriented in said groove.

12. The apparatus of claim 11 , wherein said vent opening further includes a second groove, wherein a portion of said plug is oriented in said second groove.

13. The apparatus of claim 1 , wherein said plug has a dimensionally controlled surface.

14. An apparatus comprising:
a casing defining a vent opening;
an energetic material contained in said casing; and
a non-threaded metal plastically deformed plug oriented in said vent opening, said plug sealing said vent opening,
wherein said apparatus is selected from the group consisting of ordnance and rocket motors.

15. An apparatus comprising:
a casing defining a vent opening;
an energetic material contained in said casing; and
a non-threaded metal plastically deformed plug oriented in said vent opening, said plug sealing said vent opening,
wherein a wall of said casing defines said vent opening, said vent opening having a thickness equal to a thickness of said wall,
wherein said plug has a plug thickness greater than said thickness of said vent opening and said plug has a surface that is mushroomed.

Assignees

• Fink Kenneth
• Smith David A
• Borchard Craig F
• Fehr David J
• Hanson Scott V
• Shireman Mark J
• Stanek Robert J
• Koshuba John S
• Orbital Atk Inc

Inventors

• Fink Kenneth
• Smith David A
• Borchard Craig F
• Fehr David J
• Hanson Scott V
• Shireman Mark J
• Stanek Robert J
• Koshuba John S

Classifications

• F42B39/14

  Explosion or fire protection arrangements on packages or ammunition (F42B39/20 {and F42B39/24} take precedence; {wall or panel structure of fireproof safes or storage containers E05G1/024}) · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• F42B39/20 Primary

  Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable {; Blow-out panels; Venting arrangements (ventilating arrangements on packages formed from foldable or erectable blanks B65D5/4295; packages with pressure-relief valves incorporated in a container wall B65D77/225)} · CPC title

• B23P11/00

  Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  (connecting sheet metal or metal tubes, rods or profiles B21D39/00; riveting B21J; soldering, unsoldering, welding B23K; hand tools for connecting wire or strip B25B25/00; connecting metal parts by adhesives F16B11/00) · CPC title