IP Library › Granted Patent US 12,474,145
Granted Patent B1
US 12,474,145 · App. 18/668,088 · Granted Nov 18, 2025

Projectile and caseless cartridge

Inventors: Richard L. Eckstein, Jr. (Gilbert, AZ); Linda H. Eckstein (Gilbert, AZ); Lucas R. Hayhurst (Glendale, AZ)
Assignee: Revolutionary Rounds L.L.C.
F42B5/182F42B5/184F42B10/04
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Quick Facts
Patent No.
US 12,474,145
App. No.
18/668,088
Granted
Nov 18, 2025
Kind
B1
Abstract

A caseless cartridge including a projectile. A bullet is positioned on a leading end of the projectile and sized to exit a firearm through a barrel of the firearm. An ignition housing is positioned on a trailing end of the projectile opposite the leading end. An ignition source is positioned within the ignition housing. A hollow shaft extends between the bullet and the ignition housing and joins the bullet to the ignition housing. A plurality of ignition ports extend through a wall of the shaft and through the ignition housing. An interior of the shaft is fluidly coupled to an interior of the ignition housing. The ignition source is configured to ignite a propellant through the plurality of ignition ports in response to an activation of the firearm. When the firearm is activated, each component of the caseless cartridge is either consumed or discharged from the firearm through the barrel.

Claims (23)

1 . A caseless cartridge comprising:

a projectile having:

a bullet positioned on a leading end of the projectile and sized to exit a firearm through a barrel of the firearm;

an ignition housing positioned on a trailing end of the projectile opposite the leading end and configured to contain an ignition source;

a shaft extending between the bullet and the ignition housing and joining the bullet to the ignition housing, wherein the ignition housing is fixedly attached to the shaft through a plurality of arms extending from the ignition housing to the shaft; and

a plurality of ignition ports extending through a wall of the shaft, wherein the shaft is hollow and an interior of the shaft is fluidly coupled to an interior of the ignition housing and wherein the ignition source is configured to ignite a propellant through the plurality of ignition ports in response to an activation of the firearm;

wherein when the firearm is activated, each component of the caseless cartridge is either consumed or discharged from the firearm through the barrel.

2 . The caseless cartridge of claim 1 , the projectile further comprising a plurality of fins extending away from the shaft, wherein the fins are configured to stabilize the projectile during flight.

3 . The caseless cartridge of claim 1 , wherein the propellant is molded around the projectile.

4 . The caseless cartridge of claim 1 , wherein the bullet, the ignition housing, and the shaft are formed of a single piece.

5 . A caseless cartridge comprising:

a projectile having:

a bullet positioned on a leading end of the projectile and sized to exit a firearm through a barrel of the firearm;

an ignition housing positioned on a trailing end of the projectile opposite the leading end and configured to contain an ignition source;

a shaft extending between the bullet and the ignition housing and joining the bullet to the ignition housing, wherein the ignition housing is fixedly attached to the shaft through a plurality of arms extending from the ignition housing to the shaft; and

a plurality of ignition ports extending through a wall of the shaft and through the ignition housing, wherein the shaft is hollow and an interior of the shaft is fluidly coupled to an interior of the ignition housing, and wherein the ignition source is configured to ignite a propellant through the plurality of ignition ports in response to an activation of the firearm;

wherein when the firearm is activated, each component of the caseless cartridge is either consumed or discharged from the firearm through the barrel.

6 . The caseless cartridge of claim 5 , the projectile further comprising a plurality of fins extending away from the shaft, wherein the fins are configured to stabilize the projectile during flight.

7 . The caseless cartridge of claim 5 , wherein the propellant is molded around the projectile.

8 . The caseless cartridge of claim 5 , wherein the bullet, the ignition housing, and the shaft are formed of a single piece.

9 . The caseless cartridge of claim 5 , wherein the ignition source is a mechanical ignition source.

10 . The caseless cartridge of claim 5 , wherein the ignition source is a primer.

11 . The caseless cartridge of claim 5 , wherein the ignition source is an electronic ignition style ignitor.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 8, 2025
From: ECKSTEIN, RICHARD L., JR.; ECKSTEIN, LINDA H.; HAYHURST, LUCAS R.
To: REVOLUTIONARY ROUNDS L.L.C.
Reel/Frame 071975/0605 →
Continuity (1)
Continuation 17389215 · Jul 29, 2021
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