Hunting bullet comprising an expansion ring

• US 20070193468A1
• Filed: 03/08/2005
• Published: 08/23/2007
• Est. Priority Date: 03/08/2004
• Status: Abandoned Application

• Current Assignee: Jean-Claude Sauvestre
• Original Assignee: Jean-Claude Sauvestre
• Inventors: Sauvestre, Jean-Claude
• Application Number:
  US10/592,136
• Publication Number:
  US 20070193468A1
• Time in Patent Office: Days
• US Class Current: 102/501
• CPC Class Codes: F42B 12/34 expanding before or on impact, i.e. of dumdum or mushroom type
• CPC Class Codes: F42B 30/02 Bullets
• CPC Class Codes: F42B 5/045 of telescopic type F42B5/184 takes precedence
• CPC Class Codes: F42B 7/10 Ball or slug shotgun cartridges

Abstract

The invention relates to the field of ammunition for hunting guns.

The ammunition consists of a full-caliber or subcaliber bullet (2), of the type comprising a substantially rigid bullet body (6) and a deformable part, the deformable part consisting of an approximately cylindrical expansion ring (7), the rear part of which is fitted onto the front part of the bullet body (6). Application to small, medium or large caliber ammunition.

Claims

1. A round for small, medium and large caliber guns, consisting of a full-caliber or subcaliber bullet (2), of the type comprising a substantially rigid bullet body (6) and a deformable part, wherein the deformable part consists of an approximately cylindrical expansion ring (7), the rear part of which is fitted onto the front part of the bullet body (6).

2. The round as claimed in claim 1, wherein the expansion ring (7) includes, on its front face (21), an emergent frustoconical bore (20), which cooperates with the front face of the head of the bullet body (6) in order to form an open cavity (29).

3. The round as claimed in claim 2, wherein the emergent frustoconical bore (20) on the front face (21) of the expansion ring (7) forms, with the external cylindrical part (22) of the ring, a narrow expansion flat or lip (23).

4. The round as claimed in claim 1, wherein the rear part of the ring (7) comprises a stop (27) that bears against a shoulder (28) on the bullet body (6).

5. The round as claimed in claim 2, wherein the base of the emergent frustoconical bore (20) comprises an annular bearing surface (18) that bears against the cylindrical surface (15) of the head of the bullet body and is capable of sliding over said cylindrical surface (15).

6. The round as claimed in claim 5, wherein the annular bearing surface (18) is separated from the rear part of the cylindrical ring by an annular groove (19).

7. The round as claimed in claim 1, wherein the outer surface of the cylindrical ring is slightly conical.

8. The round as claimed in claim 7, wherein the outer surface of the cylindrical ring has a curvilinear ogival shape (52).

9. The round as claimed in claim 1, wherein the front face of the expansion ring lies substantially in the plane of the face of the head of the bullet body.

10. The round as claimed in claim 1, wherein the front face of the expansion ring is protruding from the head of the bullet body.

11. The round as claimed in claim 1, wherein the front face of the expansion ring is set back relative to the plane of the head of the bullet body.

12. The round as claimed in claim 3, wherein the expansion ring is fitted onto the bullet body by screwing, friction welding, shrink-fitting or force-fitting.

13. The round as claimed in claim 12, wherein the ring is force-fitted onto the bullet body by means of a diamond-shaped knurled contact surface.