Sep 8, 2026

US12729940 - Reusable shell casing for a reloadable throwline projective launcher

A reusable breech loaded shell casing for a muzzle loaded throwline projective launcher is disclosed. The reusable breech loaded shell casing has a body defining a combustion chamber, the body extending from a distal end to a proximal end, wherein the proximal end has internal body threading. A primer head movable between an open condition and a sealed condition sealing off the proximal end of the body, wherein the primer head defines a primer chamber for refillably housing a primer propellent. A push cap operatively associable with the distal end of the body, wherein the push cap defines a concavity for seating the muzzle loaded throwline projectile on the breech-loaded chambered reusable shell casing.

Inventors: Michael Darren Pope
Filing date: 2025-03-31

shellcasinglauncherprojectilemuzzle

The patent describes a reusable breech-loaded shell casing designed for a muzzle-loaded throwline projectile launcher, featuring a combustion chamber, a refillable primer chamber, and a push cap for seating the projectile. The casing includes internal threading at the proximal end for a primer head that can be sealed or opened, enhancing its usability and reloading efficiency.

Claim 1

1 . A reusable breech loaded shell casing for a muzzle loaded throwline projectile launcher, the reusable breech loaded shell casing comprising: a body defining a combustion chamber, the body extending from a distal end to a proximal end, wherein the proximal end has internal body threading; a primer head provides an external head threading that engages the internal body threading for moving between an open condition and a sealed condition sealing off the proximal end of the body, wherein the primer head defines a primer chamber for refillably housing a primer propellent; and a push cap operatively associable with the distal end of the body, wherein the push cap defines a concavity for seating the muzzle loaded throwline projectile on the breech-loaded chambered reusable shell casing. a body defining a combustion chamber, the body extending from a distal end to a proximal end, wherein the proximal end has internal body threading; a primer head provides an external head threading that engages the internal body threading for moving between an open condition and a sealed condition sealing off the proximal end of the body, wherein the primer head defines a primer chamber for refillably housing a primer propellent; and a push cap operatively associable with the distal end of the body, wherein the push cap defines a concavity for seating the muzzle loaded throwline projectile on the breech-loaded chambered reusable shell casing.

Google Patents

https://patents.google.com/patent/US12729940

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12729940