# US 12,768,625 B2 · Polymer cartridge with enhanced snapfit metal insert and thickness ratios

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- Number: US 12,768,625 B2
- Document ID: US12768625B2
- Status: Granted
- Kind: B2
- Application number: 18/949,500
- Filed: 2024-11-15
- Published: 2025-07-31
- Granted: 2026-10-20
- Earliest claimed: 2018-07-30
- Assignees: PCP Tactical, LLC; Shpp Global Technologies B.V.
- Applicants: Pcp Tactical, LLC; SHPP Global Technologies B.V.
- Inventors: Charles Padgett; Lanse Padgett; Mark A. Sanner; Ernest Ford Caldwell; Gerould Harding; Christopher Wall
- Web page: https://patentgrep.com/patent/US12768625B2

## CPC

- F42B 5/307: formed by assembling several elements
- F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D)

## Abstract

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.

## Claims

### Claim 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.