Oct 20, 2026

US12768625 - Polymer cartridge with enhanced snapfit metal insert and thickness ratios

A high strength polymer-based cartridge having a polymer case with a first end having a mouth. A body can be formed below the mouth and having a propellant chamber and a longitudinal axis. A back end can be formed opposite the first end and formed below the body, with a first snap ridge comprising a first ridge angle at approximately at 90° to the longitudinal axis; and a second snap ridge, positioned closer to the first end than the first snap ridge, comprising a second ridge angle at approximately at 90° to the longitudinal axis. Further, an insert is configured to engage the back end.

Assignee: PCP TACTICAL, LLC SHPP Global Technologies B.V.
Inventors: Charles Padgett, Lanse Padgett, Mark A. Sanner, Ernest Ford Caldwell, Gerould Harding, Christopher Wall
Filing date: 2024-11-15

cartridgepolymerammunition

The patent describes a high-strength polymer cartridge featuring a unique design with multiple snap ridges and spacers to enhance structural integrity and engagement with a metal insert at the back end. This design aims to improve the performance and reliability of polymer-based ammunition.

Claim 1

1 . A high strength polymer-based cartridge, comprising: a polymer case, comprising: a first end having a mouth; a body formed below the mouth and having a propellant chamber and a longitudinal axis; a back end, opposite the first end, and formed below the body, comprising: a first snap ridge comprising a first ridge angle; a first snap spacer having a first snap length depending from the first snap ridge and away from the mouth; a first snap slope depending from the first snap spacer and away from the mouth; a second snap ridge, positioned closer to the first end than the first snap ridge; a second snap spacer having a second snap length depending from the second snap ridge and away from the mouth; and a second snap slope depending from the second snap spacer and away from the mouth; wherein the second snap length is shorter than the first snap length; and an insert configured to engage the back end. a polymer case, comprising: a first end having a mouth; a body formed below the mouth and having a propellant chamber and a longitudinal axis; a back end, opposite the first end, and formed below the body, comprising: a first snap ridge comprising a first ridge angle; a first snap spacer having a first snap length depending from the first snap ridge and away from the mouth; a first snap slope depending from the first snap spacer and away from the mouth; a second snap ridge, positioned closer to the first end than the first snap ridge; a second snap spacer having a second snap length depending from the second snap ridge and away from the mouth; and a second snap slope depending from the second snap spacer and away from the mouth; wherein the second snap length is shorter than the first snap length; a first end having a mouth; a body formed below the mouth and having a propellant chamber and a longitudinal axis; a back end, opposite the first end, and formed below the body, comprising: a first snap ridge comprising a first ridge angle; a first snap spacer having a first snap length depending from the first snap ridge and away from the mouth; a first snap slope depending from the first snap spacer and away from the mouth; a second snap ridge, positioned closer to the first end than the first snap ridge; a second snap spacer having a second snap length depending from the second snap ridge and away from the mouth; and a second snap slope depending from the second snap spacer and away from the mouth; a first snap ridge comprising a first ridge angle; a first snap spacer having a first snap length depending from the first snap ridge and away from the mouth; a first snap slope depending from the first snap spacer and away from the mouth; a second snap ridge, positioned closer to the first end than the first snap ridge; a second snap spacer having a second snap length depending from the second snap ridge and away from the mouth; and a second snap slope depending from the second snap spacer and away from the mouth; wherein the second snap length is shorter than the first snap length; and an insert configured to engage the back end.

Google Patents

https://patents.google.com/patent/US12768625

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12768625