Ballistic sealing, component retention, and projectile launch control for an ammunition cartridge assembly
First Claim
Patent Images
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;
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.
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Abstract
A telescoped ammunition cartridge assembly including a case having a front end and a base end positioned along a longitudinal axis. A projectile is positioned along the longitudinal axis towards the front end of the case. An endcap is coupled to the front end of the case and 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. 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.
31 Citations
20 Claims
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1. A telescoped ammunition cartridge assembly, comprising:
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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; 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)
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11. An ammunition cartridge assembly, comprising:
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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 first obturating lip seal to seal the endcap to the case; a second obturating lip seal to seal the primer support to the case; and a third obturating lip between the end cap and the projectile. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A telescoped ammunition cartridge assembly, comprising:
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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, wherein the endcap defines a through-hole having a diameter that is sized to receive and retain the projectile prior to firing and the end cap includes a stepped interface facing towards the through-hole to control shot start force and to increase firing accuracy; 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; and at least one obturating lip seal to seal at least one of the endcap or the primer support to the case.
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20. An ammunition cartridge assembly, comprising:
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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, wherein the endcap defines a through-hole having a diameter that is sized to receive and retain the projectile prior to firing and the endcap includes a C-shaped portion that is coupled to the projectile, wherein the C-shaped portion is adapted to flex inwards during firing to seal against the projectile body to prevent gas leakage; 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 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.
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Specification