Nov 11, 2025

US12467703 - Cartridges for recoil management of shoulder fired weapons

A cartridge ( 20 ) has a cartridge case ( 22 ) extending along an axis ( 500 ) from a base ( 104 ) to a mouth ( 102 ) and having an interior. A projectile ( 24 ) is mounted in the case. A propellant ( 26 ) is contained within the case. The propellant has an annular grain encircling the axis.

Assignee: Raytheon Company
Inventors: Roger C. Esplin, Daniel Kenneth Johnson, Morgan J. Bakarich, Saeed Adil Merza, Gary Leonard Abrams, Cody Alan Jensen
Filing date: 2022-08-17

cartridgerecoilshoulder_firedammunition

The patent describes a cartridge designed for shoulder-fired weapons that incorporates a unique propellant grain configuration to manage recoil. It features a projectile with a rocket motor and a primer system that enhances ignition reliability while maintaining structural integrity.

Claim 1

1 . A cartridge ( 20 ) comprising: a cartridge case ( 22 ) extending from a base ( 104 ) to a mouth ( 102 ) and having an interior; a projectile ( 24 ) mounted in the case and having a rocket motor ( 48 ); a primer ( 28 ) mounted in the base, the primer comprising: a main primer charge ( 194 ); and a percussion primer ( 192 ) having a percussion primer charge ( 196 ); and a propellant grain ( 26 ) within the case interior, a cartridge case ( 22 ) extending from a base ( 104 ) to a mouth ( 102 ) and having an interior; a projectile ( 24 ) mounted in the case and having a rocket motor ( 48 ); a primer ( 28 ) mounted in the base, the primer comprising: a main primer charge ( 194 ); and a percussion primer ( 192 ) having a percussion primer charge ( 196 ); and a main primer charge ( 194 ); and a percussion primer ( 192 ) having a percussion primer charge ( 196 ); and a propellant grain ( 26 ) within the case interior, wherein: a nozzle ( 153 ) is encircled by the propellant grain and comprises a plurality of radially-open outlet ports ( 170 ); and the propellant grain comprises an annular body encircling a centerline ( 500 ) of the cartridge. a nozzle ( 153 ) is encircled by the propellant grain and comprises a plurality of radially-open outlet ports ( 170 ); and the propellant grain comprises an annular body encircling a centerline ( 500 ) of the cartridge.

Google Patents

https://patents.google.com/patent/US12467703

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12467703