Prefragmenting munitions

• US 5,375,529 A
• Filed: 04/23/1993
• Issued: 12/27/1994
• Est. Priority Date: 10/18/1991
• Status: Expired due to Fees

• Current Assignee: SNC Industrial Technologies Incorporated /LES Technologies Industrielles SNC Incorporated
• Original Assignee: SNC Industrial Technologies Incorporated /LES Technologies Industrielles SNC Incorporated
• Inventors: Knight, C. Reed Jr., Adkins, Michael G.
• Primary Examiner(s): BROWN, DAVID
• Application Number:
  US08/051,284
• Time in Patent Office: 613 Days
• Field of Search: 102/444, 102/502, 102/513, 102/515, 102/529
• US Class Current: 102/513
• CPC Class Codes: F42B 8/16 containing an inert filler in powder or granular form

Abstract

A projectile for firing from a self-loading firearm is provided that will rmit the self-loading mechanism to function while delivering a targeting projectile of reduced range and striking capacity. These latter characteristics may be varied in accordance with a designer'"'"'s preference.

Claims

1. A projectile for a self-loading firearm said projectile comprising:

(1) a frangible, outer projectile casing having a wall which fragments upon exiting the muzzle of the barrel of a firearm;

(2) a dispersible mass contained as a filling within such projectile casing, said mass being finely divided so that it will self-disburse upon fragmentation of the projectile casing; and

(3) a ballistically stable targeting projectile the entire part of which is located rearward of the aforesaid dispersible mass,

the overall mass of said projectile being sufficient to ensure the operation of the self-loading function of said firearm.

2. A projectile as in claim 1 wherein a portion of said dispersible mass located within the forward, nose end of the casing is in a compacted state to provide support for the casing nose and wall.

3. A projectile as in claim 2 wherein said dispersible mass predominantly consists of finely divided tungsten.

4. A projectile as in claim 1 wherein the targeting projectile is of full-calibre, having a diameter sufficient to engage with rifling in the inner surface of the barrel of said weapon upon firing.

5. A projectile as in claim 4 wherein the outside diameter of the targeting projectile is defined by a protruding rim which serves as a barrel-engaging portion of such projectile.

6. A projectile as in claim 4 wherein the disintegrating capacity of the casing is enhanced by providing a full-calibre casing with a diameter which provides for positive engagement of the casing with the rifling within the barrel whereby, upon firing, the casing becomes scored and thereby disintegrates more readily under the centrifugal forces imparted by the rifling.

7. A projectile as in claim 1 wherein the targeting projectile is provided within a sidewall in the general form of a cylinder that is open at its forward end and is closed by a capping portion at its rearward end.

8. A projectile as in claim 7 wherein said rearward end is provided with a protruding rim that functions as an air-brake.

9. A projectile as in claim 7 wherein the forward end of the targeting projectile is directly exposed to the dispersible mass and a portion of such mass is contained within said sidewall to serve as a filling for the targeting projectile.

10. A projectile as in claim 9 wherein the targeting projectile is ballistically balanced to maintain said forward end oriented in the direction of travel of such targeting projectile and thereby contain and carry said portion of the dispersible mass within its cylindrical walls after the projectile casing fragments towards a target.

11. A projectile as in claim 1 wherein said dispersible mass predominantly consists of finely-divided tungsten.

12. A projectile as in claim 7 wherein said dispersible mass predominantly consists of finely divided tungsten.

13. A projectile as in claim 10 wherein said dispersible mass predominantly consists of finely divided tungsten.