Ballistic sealing, component retention, and projectile launch control for an ammunition cartridge assembly
First Claim
1. A telescoped ammunition cartridge assembly, comprising:
- a case having a front end and a base end positioned along a longitudinal axis;
a projectile positioned along the longitudinal axis towards the front end of the case;
an endcap coupled to the front end of the case and adapted to retain the projectile entirely within the case;
a primer positioned along the longitudinal axis towards the base end of the case;
a primer support coupled to the base end of the case and adapted to support the primer within the case;
a groove located on an interior surface of the primer support into which the primer expands under pressure during firing, wherein the primer is deformed to create a retaining ring that locks the primer to the primer support after the pressure is released;
an exterior groove located on an exterior surface of the primer support, the exterior groove facing towards an inner surface of the case and providing retention support between the case and the primer support prior to firing;
at least one obturating lip seal to seal at least one of the endcap or the primer support to the case; and
a relief volume of air positioned between the case and at least one of the endcap or the primer support to maintain pressure within the case in the event propellant gasses escape during the initial stages of firing.
2 Assignments
0 Petitions
Accused Products
Abstract
An ammunition cartridge assembly including a case and a projectile positioned along a longitudinal axis towards the front end of the case. An endcap coupled to the front end of the case is adapted to retain the projectile entirely within the case. A primer is positioned along the longitudinal axis towards the base end of the case. A primer support is coupled to the base end of the case and is adapted to support the primer within the case. A groove is located on the interior surface of the primer support into which the primer expands under pressure during firing. Under firing pressure, the primer is deformed to create a retaining ring that locks the primer to the primer support after the pressure is released. The cartridge assembly includes at least one obturating lip seal to seal at least one of the endcap or the primer support to the case.
34 Citations
20 Claims
-
1. A telescoped ammunition cartridge assembly, comprising:
-
a case having a front end and a base end positioned along a longitudinal axis; a projectile positioned along the longitudinal axis towards the front end of the case; an endcap coupled to the front end of the case and adapted to retain the projectile entirely within the case; a primer positioned along the longitudinal axis towards the base end of the case; a primer support coupled to the base end of the case and adapted to support the primer within the case; a groove located on an interior surface of the primer support into which the primer expands under pressure during firing, wherein the primer is deformed to create a retaining ring that locks the primer to the primer support after the pressure is released; an exterior groove located on an exterior surface of the primer support, the exterior groove facing towards an inner surface of the case and providing retention support between the case and the primer support prior to firing; at least one obturating lip seal to seal at least one of the endcap or the primer support to the case; and a relief volume of air positioned between the case and at least one of the endcap or the primer support to maintain pressure within the case in the event propellant gasses escape during the initial stages of firing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An ammunition cartridge assembly, comprising:
-
a case having a front end and a base end positioned along a longitudinal axis; a projectile positioned along the longitudinal axis towards the front end of the case; an endcap coupled to the front end of the case and adapted to retain the projectile at least partially within the case; a primer positioned along the longitudinal axis towards the base end of the case; a primer support coupled to the base end of the case and adapted to support the primer within the case; a groove located on an interior surface of the primer support into which the primer expands under pressure during firing, wherein the primer is deformed to create a retaining ring that locks the primer to the primer support after the pressure is released; an exterior groove located on an exterior surface of the primer support, the exterior groove facing towards an inner surface of the case and providing retention support between the case and the primer support prior to firing; a first obturating lip seal to seal the endcap to the case; and a second obturating lip seal to seal the primer support to the case; and a relief volume of air positioned between the case and at least one of the endcap or the primer support to maintain pressure within the case in the event propellant gasses escape during the initial stages of firing. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification