NARROWING HIGH STRENGTH POLYMER-BASED CARTRIDGE CASING FOR BLANK AND SUBSONIC AMMUNITION

• US 20160298944A1
• Filed: 06/20/2016
• Published: 10/13/2016
• Est. Priority Date: 01/14/2011
• Status: Active Grant

• Current Assignee: Pcp Ammunition Company LLC
• Original Assignee: Pcp Ammunition Company LLC
• Inventors: PADGETT, Tony
• Granted Patent: US 9,995,561 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F42B 12/76 of the casing
• CPC Class Codes: F42B 33/02 Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges F42B33/004 takes precedence
• CPC Class Codes: F42B 5/307 formed by assembling several elements
• CPC Class Codes: F42B 5/313 all elements made of plastics
• CPC Class Codes: F42B 8/04 Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge

Abstract

A high strength polymer-based cartridge casing includes a cartridge body, molded from a polymer, having a first end and an opposing second end, and enclosing a volume. A bullet is removably engaged with the first end and an insert is engaged to the second end. A shoulder portion is located proximate the first end and a propellant chamber formed in the volume. The propellant chamber has a first diameter proximate to the shoulder, a second diameter proximate to the insert and greater than the first diameter, and a linear slope disposed between the first diameter and the second diameter.

Claims

1. A high strength polymer-based cartridge casing for at least one of blank or subsonic ammunition comprising:

an upper component, molded from a polymer, comprising;

a first end having a mouth; and

at least a wall between the first end and a second end of the upper component opposite the first end;

a lower component, molded from a polymer, joined with the upper component, and having a lower wall;

an insert joined to the lower component;

a polymer sleeve extending longitudinally, radially, and in contact with at least one of the wall and the lower wall;

wherein the polymer sleeve has a uniform thickness and reduces a volume of a propellant chamber formed by at least one of the wall and the lower wall.

2. The high strength polymer-based cartridge casing of claim 1, wherein the insert is made from a metal, an alloy of metals, or an alloy of a metal and a non-metal.

3. The high strength polymer-based cartridge casing of claim 1, wherein an internal volume formed by the polymer sleeve between the mouth and the insert is unobstructed.

4. The high strength polymer-based cartridge casing of claim 1, wherein the sleeve is integral with the at least one of the wall and the lower wall.