Firearm cartridge with roll and tapered crimps and related methods for assembly
OwnerPhilip Frickinventor
Life of this patent
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Abstract
A cartridge for a firearm, including a projectile, a gas check, a case, a propellant, and a primer configured to ignite the propellant. The propellant is arranged between the gas check and an end surface of the case in which the primer is arranged. The case is crimped against the projectile. The case includes an open end with discrete roll crimps distributed along a circumference of the open end. The case further includes tapered crimps between the roll crimps along the circumference of the open and. The open end alternates between tapered and roll crimps along the entire circumference of the open end. Each of the roll crimps and tapered crimps are crimped to the projectile.
Claims17
A cartridge for a firearm, comprising:
- a projectile;
- a gas check;
- a case;
- a propellant;
- and
- a primer configured to ignite the propellant,
- wherein the propellant is arranged between the gas check and an end surface of the case in which the primer is arranged,
- wherein the case is crimped against the projectile,
- wherein the case includes an open end with discrete roll crimps distributed along a circumference of the open end,
- wherein the case further includes tapered crimps between the roll crimps along the circumference of the open end, and wherein the open end alternates between tapered and roll crimps along the entire circumference of the open end, and
- wherein each of the roll crimps and tapered crimps are crimped to the projectile.
A method for assembling a cartridge for a firearm, the method comprising:
- providing a cylindrical case with an open end;
- arranging a propellant in the case;
- arranging a gas check and a projectile and
- crimping the open end of the case against the projectile such that the open end of the case has discrete roll crimps distributed along a circumference of the open end and tapered crimps between the roll crimps, wherein the open end alternates between tapered and roll crimps along the entire circumference of the open end, and
- wherein each of the roll crimps and tapered crimps are crimped to the projectile.
Dependencies are inferred from the claim text.