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Lead free, composite polymer based bullet and cartridge case, and method of manufacturing

a composite polymer and bullet technology, applied in the field of bullets/projectiles, can solve the problems of not providing a specific range of ingredients, and not revealing the use of both nylon materials in the same bullet, and achieve the effect of superior strength

Inactive Publication Date: 2005-09-01
POLYTECH AMMUNITION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0033] It is another aspect of the present invention to provide a belted cartridge case, wherein the cylindrical body of the cartridge is circumscribed by the base of the cartridge. The portion of the cartridge where the walls of the base overlap the walls of cylindrical body forms a double-wall section of the cartridge, providing additional reinforcement and superior strength than what is known in the art.
[0034] It is yet another aspect of the present invention to provide a nested cartridge case, wherein the cylindrical body is nested in the base. The outer surface of the cartridge case is substantially smooth. The nested cartridge case maintains an outer dimension of the cartridge case that is compatible with conventional gun technology, while providing additional support for the cartridge case in the engaging region where the case engages the base.

Problems solved by technology

However, no specific range of ingredients was ever provided.
Booth does not disclose using both nylon materials together in the same bullet.

Method used

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  • Lead free, composite polymer based bullet and cartridge case, and method of manufacturing
  • Lead free, composite polymer based bullet and cartridge case, and method of manufacturing
  • Lead free, composite polymer based bullet and cartridge case, and method of manufacturing

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Embodiment Construction

[0054] The present invention provides a cartridge case body strong enough to withstand gas pressures that equal or surpass the strength of brass cartridge cases under certain conditions. Furthermore, the present invention provides a lead free, composite polymer based bullet having a specific gravity high enough to perform as well as if not better than conventional lead based bullets.

[0055]FIG. 6 illustrates a first embodiment of the invention. In particular, a cartridge case 60 for holding a 0.45 caliber bullet therein is shown. The cartridge case satisfies S.A.A.M.I. requirements for 0.45 caliber ammunition. It is understood to one skilled in the art that the dimensions of the present invention may be adjusted according to ammunition of varying size. Accordingly, the present invention, and the embodiments herein, can be adapted to smaller and larger ammunition.

[0056] For example, the cartridge case 60 has a front end that holds the bullet (not shown) and a rear end that holds the...

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PUM

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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.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation-in-part of Applicant's copending application Ser. No. 10 / 695,158, filed Oct. 2, 2003, the subject matter of which is incorporated herein in its entirety, and claims the benefit of U.S. Provisional Application No. 60 / 421,782, filed Oct. 29, 2002, the subject matter of which is incorporated herein in its entirety.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to bullets / projectiles (hereinafter referred to as bullets) and cartridge cases. More particularly, the present invention relates to lead free, composite polymer based bullets and cartridge cases, and a method of manufacturing the same. [0004] 2. Description of Related Art [0005] It is well known in the industry to manufacture bullets and corresponding cartridge cases from either brass or steel. Typically, industry design standards call for materials that are strong enough to withstand extreme opera...

Claims

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Application Information

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IPC IPC(8): F42B5/02F42B5/26F42B5/30F42B5/36F42B12/74
CPCF42B5/025F42B5/26F42B12/745F42B5/36F42B5/30
Inventor WILEY, SYREMBERT, WILLIAM E. III
Owner POLYTECH AMMUNITION
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