Method of making a two-piece primer insert
First Claim
1. A method of making a two piece primer insert for ammunition comprising the steps of:
- providing an upper primer insert portion comprising;
an upper primer bottom surface opposite an upper primer top surface,a flash hole aperture through the upper primer bottom surface,a flash hole aperture groove positioned in the upper primer top surface around the flash hole aperture configured to receive a polymer overmolding through the flash hole aperture, anda substantially cylindrical coupling element extending away from the upper primer bottom surface,providing a lower primer insert portion comprising;
a lower primer bottom surface opposite a lower primer top surface,a primer recess in the lower primer top surface that extends toward the lower primer bottom surface and adapted to fit a primer, anda lower primer aperture through the lower primer bottom surface, aligning the upper primer top surface and the lower primer bottom surface; and
connecting the upper primer top surface and the lower primer bottom surface to form a two piece primer insert.
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Accused Products
Abstract
The present invention provides a method of making a two piece primer insert comprising: an upper primer insert portion comprising an upper primer bottom surface, an upper primer aperture through the upper primer bottom surface; a substantially cylindrical coupling element extending away from the upper primer bottom surface, and an interior surface; a lower primer insert portion comprising a lower primer bottom surface opposite a lower primer top surface having a primer recess, a lower primer aperture through the lower primer bottom surface, and a flange adapted to receive a polymer overmolding that extends circumferentially about an outer edge of the lower primer top surface; and an insert joint that links and aligns the upper primer bottom surface and the lower primer bottom surface to form a primer insert.
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Citations
19 Claims
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1. A method of making a two piece primer insert for ammunition comprising the steps of:
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providing an upper primer insert portion comprising; an upper primer bottom surface opposite an upper primer top surface, a flash hole aperture through the upper primer bottom surface, a flash hole aperture groove positioned in the upper primer top surface around the flash hole aperture configured to receive a polymer overmolding through the flash hole aperture, and a substantially cylindrical coupling element extending away from the upper primer bottom surface, providing a lower primer insert portion comprising; a lower primer bottom surface opposite a lower primer top surface, a primer recess in the lower primer top surface that extends toward the lower primer bottom surface and adapted to fit a primer, and a lower primer aperture through the lower primer bottom surface, aligning the upper primer top surface and the lower primer bottom surface; and
connecting the upper primer top surface and the lower primer bottom surface to form a two piece primer insert. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of forming a two piece primer insert for ammunition comprising the steps of:
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forming an upper primer insert portion comprising; an upper primer bottom surface opposite an upper primer top surface, and a flash hole aperture in the upper primer bottom surface that extends circumferentially about the upper flash hole aperture configured to receive a polymer overmolding through the flash hole aperture, and a substantially cylindrical coupling element extending away from the upper primer top surface; forming a lower primer insert portion comprising; a lower primer bottom surface opposite a lower primer top surface, a primer recess in the lower primer top surface that extends toward the lower primer bottom surface and adapted to fit a primer, aligning the upper primer bottom surface and the lower primer bottom surface to align the flash hole aperture and the primer recess to form an insert joint; and connecting the insert joint to connect the lower primer insert portion and the upper primer insert portion and form a primer insert. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification