Monolithic high incapacitation small arms projectile

• US 6,973,879 B1
• Filed: 03/14/2003
• Issued: 12/13/2005
• Est. Priority Date: 03/16/2002
• Status: Expired due to Fees

• Current Assignee: Green Mountain Defense Industries LLC
• Original Assignee: Hugh Anthony Mcelroy, Michael Ray Harris
• Inventors: Harris, Michael Ray, McElroy, Hugh Anthony
• Primary Examiner(s): Carone, Michael J.
• Assistant Examiner(s): Bergin, James S.
• Application Number:
  US10/389,470
• Time in Patent Office: 1,005 Days
• Field of Search: 102/501, 102514-517, 102/511
• US Class Current: 102/514
• CPC Class Codes: F42B 12/74 of the core or solid body
• CPC Class Codes: F42B 12/76 of the casing

Abstract

A small arms projectile for an increase in accuracy, incapacitation effects, and penetration of light material targets. The projectile includes a monolithic heat-treated steel core with a plated on jacket for strong adherence. A swaged or machined cannelure groove to provide a secure interface with conventional cartridge cases, support operation in semi-automatic and full automatic firearms, and a consistent shot start is also provided. An aero-ballistic efficient nose for increasing the projectile'"'"'s ballistic coefficient and dynamically adapting to soft and hard targets and light material in a novel manner is also provided.

Claims

1. An axisymmetric projectile 20 consisting of a unitary core 22 and an encapsulating metal jacket 21;

said jacket is securely bonded to said core by a process selected from the set of processes consisting of electroplating, electroless plating, and mechanical plating;

said unitary core is made from case hardened steel 23;

said projectile having an aft boat tail cross section 26;

said projectile having a cylindrical cross section forward of said aft boat tail;

said projectile having a cannelure groove 25;

said projectile having an ogival cross section forward of said cannelure groove;

said projectile having a sharp pointed nose 24;

said projectile having an external length and an external diameter;

said external length divided by said external diameter is a ratio greater than or equal to 4.5;

the combination therewith of a projectile having a gyroscopic stability factor less than or equal to 2.5;

the combination therewith of a projectile that does not break upon impact with external body armor and subsequent soft target penetration;

the combination therewith of a projectile having a yaw-of-repose angle while penetrating soft targets substantially equal to 90 degrees for substantially more than a brief moment in time.