IP Library Granted Patent US 7,162,942
Granted Patent B2
US 7,162,942 · App. 11/143,190 · Granted Jan 16, 2007

Bullet

Assignee: Olin Corporation
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Quick Facts
Patent No.
US 7,162,942
App. No.
11/143,190
Granted
Jan 16, 2007
Kind
B2
Abstract

A plated hallow point bullet has a metallic plating which completely encapsulates a metallic core. A core precursor is formed having a nose compartment. A metallic coating is applied to the precursor to completely encapsulate the precursor. The coated precursor is mechanically deformed without breaching the coating.

Claims (17)

1. A method of manufacturing a bullet comprising: forming a core precursor having a nose cavity; applying a metallic coating onto the core precursor to completely encapsulate the precursor; and mechanically deforming the coated precursor to reduce the nose diameter of the precursor and the inner diameter of the nose cavity in the precursor, and to form plurality of indentations within the nose cavity without breaching or rupturing the coating.

2. The method of claim 1 wherein: the forming comprises swaging; the applying comprises electroplating; and the mechanically deforming comprises impacting the metallic coating of the nose cavity with a tool to form a plurality of indentations extending at least mostly longitudinally so as to define locally weakened areas for defining impact petals.

3. The method of claim 2 wherein the deforming does not penetrate the metallic coating of the nose cavity.

4. The method of claim 2 wherein the deforming decreases the depth of the nose cavity.

5. The method of claim 1 wherein: the forming comprises forming said nose cavity with a first depth of at least 0.20 inch; and the deforming produces a bullet nose cavity of a second depth less than the first depth.

6. The method of claim 1 wherein the deforming produces a bullet nose cavity of 0.15–0.35 inch.

7. The method of claim 1 wherein: the forming comprises forming said precursor nose with a first diameter at a rim thereof; the applying produces a coated precursor nose with a second diameter at a rim thereof greater than the first diameter;

and the deforming produces a bullet nose with a third diameter at a rim thereof less than the second diameter.

8. The method of claim 1 wherein the third diameter is less than the first diameter.

9. The method of claim 1 wherein the deforming compresses the nose diameter of the precursor by at least 0.010 inches.

10. The method of claim 9 wherein the deforming comprises compressing the nose of the precursor to cause a slight narrowing of the nose cavity's inner diameter, such that the forming of the plurality of indentations does not result in expansion of the nose cavity and coating that would cause a rupture in the coating.

11. The method of claim 10 wherein the deforming forms a plurality of indentations extending at least mostly longitudinally so as to define locally weakened areas for defining impact petals.

12. The method of claim 11 wherein the plurality of indentations comprise grooves having a width of about 0.025 inches and a depth of about 0.050 inches.

13. A method of manufacturing a bullet comprising:

forming a core precursor having a nose cavity;

applying a metallic coating onto the core precursor to completely encapsulate the precursor; and

mechanically deforming the coated precursor to reduce the nose diameter of the precursor by at least 0.010 inches and cause a slight narrowing of the nose cavity's inner diameter such that the deforming may further form a plurality of indentations within the nose cavity that does not result in expansion of the nose cavity and coating that would cause a rupture or penetration of the coating, wherein the plurality of indentations extend at least mostly longitudinally so as to define locally weakened areas for defining impact petals.

Assignments (2)
RELEASE OF SECURITY INTEREST Recorded Jul 29, 2021
From: BANK OF AMERICA, N.A.
To: OLIN CORPORATION
Reel/Frame 057016/0561 →
SECURITY AGREEMENT Recorded Aug 7, 2020
From: OLIN CORPORATION
To: BANK OF AMERICA, N.A.
Reel/Frame 053436/0262 →
Continuity (3)
Division 1037790300 · Mar 3, 2003
Provisional Application 6036165800 · Mar 4, 2002
Related Publication 20060090665A1 · May 4, 2006