Mar 31, 2026

US12590781 - Preloaded disposable cylinder system for revolver

A preloaded disposable cylinder system for revolvers comprising a disposable cylindrical body, which is preferably 3D printed with chambers preloaded with propellant, primer, and projectile components without cartridge cases. The system includes boss pads and tapered cylinder end guideways for precise alignment, a spring-loaded center pin mechanism for secure retention, and eliminates traditional crane mechanisms and extractors. The design provides faster reload times than conventional revolvers, stronger dual-end cylinder lock-up, enhanced accuracy through improved alignment, and reduced manufacturing complexity. Compatible with existing revolver designs through minor frame modifications.

Inventors: Luther E. Brown
Filing date: 2025-10-17

revolvercylinderammunitiondisposable

The patent describes a preloaded disposable cylinder system for revolvers that eliminates traditional cartridge cases, allowing for faster reloads and enhanced accuracy. This innovative design is compatible with existing revolver models with minor modifications and features a secure retention mechanism for improved performance.

Claim 1

1 . A disposable cylinder for use in a revolver, comprising: a cylindrical body configured for single-use operation and having a muzzle end and an opposing butt end; a muzzle end boss pad located at the muzzle end and a butt end boss pad located at the butt end of said cylinder, wherein the butt end boss pad has a first diameter and the muzzle end boss pad has a second diameter, the first diameter being different than the second diameter to prevent backward installation of the cylinder; and a plurality of chambers formed radially around a central axis and extending from an opening at the muzzle end to a substantially closed butt end, each chamber preloaded with propellant, primer, and projectile components but entirely without separate cartridge cases, each of the plurality of chambers configured to fire only once. a cylindrical body configured for single-use operation and having a muzzle end and an opposing butt end; a muzzle end boss pad located at the muzzle end and a butt end boss pad located at the butt end of said cylinder, wherein the butt end boss pad has a first diameter and the muzzle end boss pad has a second diameter, the first diameter being different than the second diameter to prevent backward installation of the cylinder; and a plurality of chambers formed radially around a central axis and extending from an opening at the muzzle end to a substantially closed butt end, each chamber preloaded with propellant, primer, and projectile components but entirely without separate cartridge cases, each of the plurality of chambers configured to fire only once.

Google Patents

https://patents.google.com/patent/US12590781

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12590781