US 3,935,816 AGranted

Construction for cartridge

AssigneeHoward S. Klotz

InventorLawrence E. Boquette, Jr.

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Abstract

A bullet is formed of an explosive charge with a primer at one end and a projectile mass at the other end, all enclosed in a continuous plastic sheath. The sheath has a weakened central section to define a line of separation for a projectile section from the body of the plastic sheath when the explosive charge is fired. By controlling the weight of the projectile and the stress required to separate the plastic case at the weakened section, the impact characteristics of the projectile can be controlled. A blank is fabricated by eliminating the projectile and forming the weakened sheath section at the end of the sheath. The combined primer and charge is encased by a thin, plastic sheath portion which is thin enough to allow a weapon firing pin to fire the primer. The combined primer and charge is also formed of a small caliber blank with a conventional brass case.

Claims6

Dependent claims

A live ammunition cartridge comprising, in combination:

a cylindrical powder charge body having a constant diameter, a primer disposed in one end of said powder charge body, an elongated cylindrical and continuous sheath of plastic material having an axial bore of said constant diameter;
a first portion of said elongated plastic sheath bore closely receiving said powder charge body with said primer being juxtaposed with one end of said elongated plastic sheath;
a second portion of said sheath having an elongated projectile-shaped section which is closed at its end and which extends axially away from said powder charge body;
a projectile mass disposed within and completely filling said constant diameter bore in said projectile-shaped sheath section;
said first plastic sheath portion having a wall thickness sufficiently strong to withstand the forces due to expanding gas created when said powder charge is ignited by said primer;
said second plastic sheath portion having a substantially constant wall thickness, said second portion wall thickness being less than said first portion wall thickness;
said first plastic sheath portion being ejected with said projectile mass when said powder charge body is ignited.

4 more elements

Dependencies are inferred from the claim text.