Polymer ammunition having a primer insert with a primer pocket groove
First Claim
1. A polymeric ammunition comprising:
- a primer insert comprising;
a top surface opposite a bottom surface and a extraction flange that extends circumferentially about an outer edge of the top surface;
a coupling element that extends from the bottom surface, wherein the coupling element is adapted to receive a polymer overmolding;
a primer recess in the top surface that extends toward the bottom surface, wherein the primer recess comprises a recess bottom and a circular recess side wall;
a primer flash aperture through the recess bottom that extends through the bottom surface, wherein the primer flash aperture is adapted to receive the polymer overmolding to form a flash hole; and
a groove in the primer recess positioned around the primer flash aperture adapted to receive the polymer overmolding, wherein the groove extends at least partially over the recess bottom and the circular recess side wall and the groove is adapted to receive the polymer overmolding through the primer flash aperture and over the recess bottom and the circular recess side wall;
a substantially cylindrical polymeric middle body extending about the primer insert, wherein the substantially cylindrical polymeric middle body comprises;
a polymeric bullet-end coupling element at a first end opposite a polymeric coupling end connected by a propellant, wherein the polymeric coupling end extends over the coupling element and into the primer flash hole aperture and into the groove to form a flash hole;
a polymeric bullet-end upper portion comprising a bullet-end coupling element connected to the polymeric bullet-end coupling element opposite a projectile aperture adapted to engage a projectile;
a propellant at least partially filling the propellant chamber;
a primer inserted into the primer recess; and
a projectile frictionally fitted in the bullet-end aperture.
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Accused Products
Abstract
The present invention provides an ammunition having a primer insert having a top surface opposite a bottom surface and a extraction flange that extends circumferentially about an outer edge of the top surface; a coupling element that extends from the bottom surface, wherein the substantially cylindrical coupling element is adapted to receive a polymer overmolding; a primer recess in the top surface that extends toward the bottom surface, wherein the primer recess comprises a recess bottom and a circular recess side wall; a primer flash aperture through the recess bottom that extends through the bottom surface, wherein the primer flash aperture is adapted to receive a polymer overmolding to form a flash hole; and a groove in the primer recess positioned around the primer flash aperture adapted to receive a polymer overmolding, wherein the groove extends at least partially over the bottom surface and the circular recess side wall and the groove is adapted to receive polymer through the primer flash aperture and over the bottom surface and the circular recess side wall.
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Citations
19 Claims
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1. A polymeric ammunition comprising:
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a primer insert comprising;
a top surface opposite a bottom surface and a extraction flange that extends circumferentially about an outer edge of the top surface;
a coupling element that extends from the bottom surface, wherein the coupling element is adapted to receive a polymer overmolding;
a primer recess in the top surface that extends toward the bottom surface, wherein the primer recess comprises a recess bottom and a circular recess side wall;
a primer flash aperture through the recess bottom that extends through the bottom surface, wherein the primer flash aperture is adapted to receive the polymer overmolding to form a flash hole; and
a groove in the primer recess positioned around the primer flash aperture adapted to receive the polymer overmolding, wherein the groove extends at least partially over the recess bottom and the circular recess side wall and the groove is adapted to receive the polymer overmolding through the primer flash aperture and over the recess bottom and the circular recess side wall;a substantially cylindrical polymeric middle body extending about the primer insert, wherein the substantially cylindrical polymeric middle body comprises;
a polymeric bullet-end coupling element at a first end opposite a polymeric coupling end connected by a propellant, wherein the polymeric coupling end extends over the coupling element and into the primer flash hole aperture and into the groove to form a flash hole;a polymeric bullet-end upper portion comprising a bullet-end coupling element connected to the polymeric bullet-end coupling element opposite a projectile aperture adapted to engage a projectile; a propellant at least partially filling the propellant chamber; a primer inserted into the primer recess; and a projectile frictionally fitted in the bullet-end aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification