Lead free, composite polymer based bullet and cartridge case, and method of manufacturing
First Claim
1. A lead-free cartridge case capable of holding a bullet, the bullet having a cannelure formed along an outer circumferential surface of a body of the bullet, the cartridge case comprising:
- a cylindrical body having a first end and a second end opposite the first end; and
a base having an axially extending wall at a first end of the base, wherein an inner diameter of the axially extending wall of the base is greater than an outer diameter of the second end of the cylindrical body, and wherein the axially extending wall of the base engages an engaging region of the cylindrical body, forming a belted portion.
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Accused Products
Abstract
A lead-free, composite polymer based bullet and cartridge case, wherein the cartridge case is formed by matingly engaging a cylindrical body and a corresponding base. A belted cartridge case has a double wall design, which provides the cartridge with increased thickness, and in turn, a reinforced structure useful for withstanding breakage from an impact caused by high pressure loads. The belt is formed to have an inner diameter at a first end of the base that is larger than the outer diameter of any portion of the cylindrical body. A nested cartridge case allows the second end of the case to nest in a first end of the base at an engaging region.
61 Citations
36 Claims
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1. A lead-free cartridge case capable of holding a bullet, the bullet having a cannelure formed along an outer circumferential surface of a body of the bullet, the cartridge case comprising:
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a cylindrical body having a first end and a second end opposite the first end; and
a base having an axially extending wall at a first end of the base, wherein an inner diameter of the axially extending wall of the base is greater than an outer diameter of the second end of the cylindrical body, and wherein the axially extending wall of the base engages an engaging region of the cylindrical body, forming a belted portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A base for a lead-free cartridge case having a cylindrical body for holding a bullet, the base comprising:
an axially extending wall at a first end of the base, wherein the cylindrical body of the cartridge case forms an interference fit with an inner diameter of the axially extending wall. - View Dependent Claims (17)
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18. A lead-free cartridge case capable of holding a bullet, the bullet having a cannelure formed along an outer circumferential surface of a body of the bullet, the cartridge case comprising:
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a cylindrical body having a first end and a second end opposite the first end; and
a base having an axially extending wall, wherein the cylindrical body forms an interference fit with an inner surface of the axially extending wall.
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19. A lead-free cartridge case capable of holding a bullet, the bullet having a cannelure formed along an outer circumferential surface of a body of the bullet, the cartridge case comprising:
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a cylindrical body having a first end and a second end opposite the first end, wherein second end of the cylindrical body comprises an axially extending wall; and
a base having an axially extending wall at a first end of the base, wherein an inner diameter of the axially extending wall at the first end of the base is greater than an outer diameter of the axially extending wall at the second end of the cylindrical body, and wherein the axially extending wall of the base and the axially extending wall of the second end of the cylindrical body, respectively, engage each other to define a nested engaging portion. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification