Hollow point bullets and methods of fabricating the same

• US 7,171,905 B2
• Filed: 12/02/2005
• Issued: 02/06/2007
• Est. Priority Date: 06/05/2003
• Status: Active Grant

• Current Assignee: Heckler & KOCH GmbH (H&K AG)
• Original Assignee: Heckler & KOCH GmbH (H&K AG)
• Inventors: Roth, Marc, Hirt, Robert, Kron, Hans-Jürgen, Seeger, Heinz
• Primary Examiner(s): Carone; Michael J.
• Assistant Examiner(s): Klein; Gabriel J.
• Application Number:
  US11/292,977
• Publication Number:
  US 20060144280A1
• Time in Patent Office: 431 Days
• Field of Search: 102507-510
• US Class Current: 102/509
• CPC Class Codes: F42B 12/34 expanding before or on impact, i.e. of dumdum or mushroom type

Abstract

A hollow point bullet and methods for fabricating the same are disclosed. An example hollow point bullet includes a recess opened at a tip of the bullet that includes a first portion and a second portion. The first portion opens to the tip of the bullet and has a square cross-section, and the second portion has a circular cross-section.

Claims

1. Hollow point bullet comprising a recess opened at a tip of the bullet that includes a first portion and a second portion, wherein at least one of the first portion or the second portion opens to the tip or the bullet, and wherein the first portion has a square cross-section transverse to a longitudinal axis of the bullet and the second portion has a circular cross-section transverse to a longitudinal axis of the bullet.

2. The hollow point bullet as defined in claim 1, wherein the second portion has a depth shorter than a depth of the first portion.

3. The hollow point bullet as defined in claim 2, wherein the depth of the second portion is approximately half as long as the depth of the first portion.

4. The hollow point bullet as defined in claim 3, wherein the bullet further comprises a tapered portion and a full-caliber portion and wherein the first portion extends the length of the tapered portion.

5. The hollow point bullet as defined in claim 1, wherein the second portion has a diameter smaller than a length of a side of the first portion.

6. The hollow point bullet as defined in claim 4, wherein the second portion has a depth shorter than a depth of the first portion.

7. The hollow point bullet as defined in claim 1, wherein the bullet further comprises a tapered portion and a full-caliber portion and wherein the first portion extends the length of the tapered portion.

8. The hollow point bullet as defined in claim 1, wherein the length of the first portion is one-fifth to one-third of the overall length of the bullet.

9. The hollow point bullet as defined in claim 1, wherein width of the first portion is approximately one-third of the caliber of the bullet.

10. The hollow point bullet as defined in claim 1, wherein the nominal caliber of the bullet is approximately 4.6 millimeters.

11. The hollow point bullet as defined in claim 10, wherein the width of the first portion is approximately 1.5 millimeters.

12. The hollow point bullet as defined in claim 11, wherein the diameter of the second portion is approximately 1.3 millimeters.

13. The hollow point bullet as defined in claim 1, wherein the first and second portions are open towards the tip of the bullet.

14. Hollow point bullet comprising a recess opened at a tip of the bullet that includes a first portion and a second portion, wherein the first portion has a differently shaped cross-section transverse to a longitudinal axis of the bullet than the second portion, wherein the maximum dimension across the second portion is less than the maximum dimension across the first portion, and wherein the difference in the maximum dimensions across the first and second portions stops further deformation of the bullet or ensures that portions of the tip do not rip off upon impact with a target.

15. The hollow point bullet of claim 14, wherein one of the first portion or second portion has a square shaped cross-section and the other of the first portion or second portion has a circular shaped cross-section.

16. The hollow point bullet as defined in claim 14, wherein the second portion has a depth shorter than a depth of the first portion.

17. The hollow point bullet as defined in claim 14, wherein the bullet further comprises a tapered portion and a full-caliber portion and wherein the first portion extends the length of the tapered portion.

18. A hollow point bullet as defined in claim 17, wherein the second portion extends into the full-caliber pardon of the bullet.

19. A method of fabricating a hollow point bullet, the method comprising forming a first and a second recess at a tip of the bullet where the first and second recesses are differently shaped and open at the tip of the bullet, and wherein the maximum dimension across the second recess is less than the maximum dimension across the first recess, which stops further deformation of the bullet or ensures that portions of the tin do not rip off upon impact with a target.

20. The method as defined in claim 19, wherein the first recess has a square cross-section transverse to a longitudinal axis of the bullet and the second recess has a circular cross-section transverse to a longitudinal axis of the bullet.