Manufacturing process to produce metalurgically programmed terminal performance projectiles

Patent metadata

Field	Value
Publication number	US-9360284-B1
Application number	US-201414214780-A
Country	US
Kind code	B1
Filing date	Mar 15, 2014
Priority date	Mar 15, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

The present invention in some aspects is directed to small arms ammunition and programmed upset characteristics thereof imparted to them using high energy beams. More particularly, the invention relates to ammunition and methods of making ammunition having predetermined patterns of engraving and/or cutting or hardening and/or annealing imparted in the ammunition's forward portion using a programming laser or electron beam system adapted for treating projectiles to effect predetermined and consistent upset configurations.

First claim

The invention claimed is:

1. A method of forming a jacketed bullet having a front end portion, comprising the steps of:
a) forming cup shaped jacket;
b) providing a core;
c) inserting the core into the jacket and forming the jacketed bullet;
d) providing a high energy beam system capable of directing a narrow high energy beam and finely annealing and/or hardening specific patterns; and
e) heat treating the front end portion of the jacket with a narrow high energy beam emitted from the high energy beam system in the shape of a first predetermined pattern onto the jacket blank wall, the first predetermined pattern being about an axis of the jacketed bullet, wherein the heat treating in the shape of a first predetermined pattern is controlled by using a control processor comprising an automated computer having storage and operator interface.

2. The method of claim 1 , wherein the high energy beam system is a scanning laser system and the beam is a laser beam or an electron beam system and the beam is an electron beam.

3. The method of claim 2 , wherein the heat treating is annealing.

4. The method of claim 2 , wherein the heat treating is hardening.

5. The method of claim 3 , wherein the first predetermined pattern comprises paths of annealing in the jacket longitudinally oriented in an ogive portion of the jacketed bullet, wherein the paths define petals in the jacket.

6. The method of claim 4 , wherein the first predetermined pattern comprises paths of hardening in the jacket longitudinally oriented in an ogive portion of the jacketed bullet, wherein the paths define petals in the jacket.

7. The method of claim 5 , further comprising heat treating the core with a narrow high energy beam emitted from the high energy beam system in the shape of a second predetermined pattern, the second predetermined pattern being about the axis of the jacketed bullet and being at least partially longitudinally aligned the first predetermined pattern.

8. The method of claim 6 , further comprising heat treating the core with a narrow high energy beam emitted from the high energy beam system in the shape of a second predetermined pattern, the second predetermined pattern being about the axis of the jacketed bullet and being at least partially longitudinally aligned the first predetermined pattern.

9. The method of claim 7 , wherein the second predetermined pattern comprises paths of weakening in the core longitudinally oriented in an ogive portion of the jacketed bullet, wherein the paths define segments in the core, the segments being at least partially longitudinally aligned with the petals.

10. The method of claim 8 , wherein the second predetermined pattern comprises paths of weakening in the core longitudinally oriented in an ogive portion of the jacketed bullet, wherein the paths define segments in the core, the segments being at least partially longitudinally aligned with the petals.

11. The method of claim 2 , wherein the narrow high energy beam is oriented and fired at a perpendicular angle relative to a tangent of a targeted surface point of the jacket to form the first predetermined pattern.

12. The method of claim 2 , wherein the high energy beam system is an electron beam system and the narrow electron beam is oriented and fired at an acute angle relative to a tangent of a targeted surface point of the jacket to form the first predetermined pattern.

13. A method of forming a jacketed bullet having a front end portion, comprising the steps of:
a) forming cup shaped jacket;
b) providing a core;
c) inserting the core into the jacket and forming the jacketed bullet;
d) providing a high energy beam system capable of directing a narrow high energy beam and finely cutting and/or engraving specific patterns; and
e) heat treating the front end portion of the jacket with a narrow high energy beam emitted from the high energy beam system in the shape of a first predetermined pattern onto the jacket blank wall, the first predetermined pattern being about an axis of the jacketed bullet, wherein the heat treating in the shape of a first predetermined pattern is controlled by using a control processor comprising an automated computer having storage and operator interface.

14. The method of claim 13 , wherein the high energy beam system is a scanning laser system and the beam is a laser beam or an electron beam system and the beam is an electron beam.

15. The method of claim 14 , wherein the heat treating is cutting.

16. The method of claim 14 , wherein the heat treating is engraving.

17. The method of claim 15 , wherein the first predetermined pattern comprises paths of cutting in the jacket longitudinally oriented in an ogive portion of the jacketed bullet, wherein the paths define petals in the jacket.

18. The method of claim 16 , wherein the first predetermined pattern comprises paths of engraving in the jacket longitudinally oriented in an ogive portion of the jacketed bullet, wherein the paths define petals in the jacket.

19. The method of claim 17 , further comprising heat treating the core with a narrow high energy beam emitted from the high energy beam system in the shape of a second predetermined pattern, the second predetermined pattern being about the axis of the jacketed bullet and being at least partially longitudinally aligned the first predetermined pattern.

20. The method of claim 18 , further comprising heat treating the core with a narrow high energy beam emitted from the high energy beam system in the shape of a second predetermined pattern, the second predetermined pattern being about the axis of the jacketed bullet and being at least partially longitudinally aligned the first predetermined pattern.

21. The method of claim 19 , wherein the second predetermined pattern comprises paths of weakening in the core longitudinally oriented in an ogive portion of the jacketed bullet, wherein the paths define segments in the core, the segments being at least partially longitudinally aligned with the petals.

22. The method of claim 20 , wherein the second predetermined pattern comprises paths of weakening in the core longitudinally oriented in an ogive portion of the jacketed bullet, wherein the paths define segments in the core, the segments being at least partially longitudinally aligned with the petals.

23. The method of claim 14 , wherein the narrow high energy beam is oriented and fired at a perpendicular angle relative to a tangent of a targeted surface point of the jacket to form the first predetermined pattern.

24. The method of claim 2 , wherein the high energy beam system is an electron beam system and the narrow electron beam is oriented and fired at an acute angle relative to a tangent of a targeted surface point of the jacket to form the first predetermined pattern.

25. The method of claim 2 , wherein the high energy beam system is a scanning laser system and the beam is a laser beam, further comprising: precoating the jacket with a material selected to be absorptive of the wavelength of the laser beam to facilitate the laser annealing or hardening.

26. The method of claim 14 , wherein the high energy beam system is a scanning laser system and the beam is a laser beam, further comprising: precoating the jacket with a material selected to be absorptive of the wavelength of the laser beam to facilitate the laser annealing or hardening.

27. A cartridge comprising a casing and a jacket

Assignees

• Vista Outdoor Operations Llc

Inventors

• Moore Scott E

Classifications

• B23K26/38

  by boring or cutting · CPC title

• B44C1/228

  by laser radiation · CPC title

• F42B5/28 Primary

  of metal {, i.e. the cartridge-case tube is of metal} · CPC title

• B23K15/0006

  specially adapted for particular articles or work · CPC title

• B21K21/04

  Shaping thin-walled hollow articles, e.g. cartridges · CPC title