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Firearm cartridge

a cartridge and cartridge technology, applied in the field of cartridges for projectile weapons, can solve the problems of breech-loading, metallic cartridges that have never been used with modern breech-loading cartridges, straight cut lands and grooves, etc., and achieve the effect of better appreciation of contribution to the ar

Inactive Publication Date: 2019-02-07
FRANKLIN ARMORY HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is an improved firearm cartridge that solves the problems of previous designs. It includes a case, a projectile, a sabot assembly, and a stabilizer. The stabilizer has fins and may have a circumferential groove. The sabot assembly has mating features that engage the groove to limit axial motion of the projectile. The projectile may also have additional features. Overall, this design has all the benefits of previous designs and improves firearm performance.

Problems solved by technology

Furthermore, a barrel with straight cut lands and grooves has never been used with a modern breech-loading, metallic cartridge.

Method used

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Examples

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Embodiment Construction

[0021]An embodiment of the firearm cartridge of the present invention is shown and generally designated by the reference numeral 200.

[0022]FIGS. 2-4 illustrate the improved firearm barrel 10 of the present invention. More particularly, the firearm barrel is an elongated body having a rear / breech end 12 and an opposed muzzle end 14. The barrel defines a barrel bore 16, which communicates with a chamber 18 in the rear end, and a barrel axis 24. In the current embodiment, the barrel is chambered to receive a 0.308 Winchester cartridge. However, the barrel can be chambered for any suitable cartridge, including 300 Blackout and 5.56 mm. The entire barrel bore forward of the chamber has an interior surface 26 having a plurality of alternating lands 20 and grooves 22 (the lands and grooves extend from the chamber to the muzzle end, giving the bore a constant cross-sectional profile along its length). The grooves are surfaces separated from the bore axis by a first radius. The lands are sur...

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Abstract

A firearm cartridge has a case defining an interior chamber and having a case mouth, an elongated projectile having a forward end and a rear end, a sabot assembly having an exterior sized to be closely received in the case mouth, and defining an interior passage adapted to closely receive the projectile, and the projectile including a stabilizer at the rear end. The stabilizer may include fins. The projectile may include a circumferential groove at an intermediate portion between the forward end and rear end. The sabot assembly includes a mating feature adapted to engage the circumferential groove to limit axial motion of the projectile with respect to the sabot assembly. The projectile may define a plurality of circumferential grooves. The sabot assembly may include a plurality of mating features adapted to engage the circumferential grooves. The sabot assembly may include a plurality of elements arranged about the projectile.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Patent Application No. 62 / 541,994 filed on Aug. 7, 2017, entitled “SELF-STABILIZED PROJECTILES,” and claims the benefit of U.S. Provisional Patent Application No. 62 / 619,365 filed on Jan. 19, 2018, entitled “NON-RIFLE / SHOTGUN (NRS) FIREARM SYSTEM,” which are hereby incorporated by reference in its entirety for all that is taught and disclosed therein.FIELD OF THE INVENTION[0002]The present invention relates to cartridges for projectile weapons and, more particularly, to a cartridge including a drag-stabilized projectile.BACKGROUND OF THE INVENTION[0003]The National Firearms Act of 1934 (NFA) requires the registration with the federal government of machineguns, rifles and shotguns having an overall length less than 26 inches, rifles with a barrel shorter than 16 inches, and shotguns with a barrel length less than 18 inches. An example of a prior art short barreled rifle is shown in FIG...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F42B10/06F42B5/02
CPCF42B10/06F42B5/025F41A21/18F42B10/08F42B14/061F42B14/062F41A21/24
Inventor FELLOWS, RYAN PAULJACOBSON, JAY LEONARD
Owner FRANKLIN ARMORY HLDG INC