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US 2002/0170416 A1Published application
Cap for a multi-component ammunition projectile and method
AssigneeDoris Nebel Beal Intervivos Patent Trust
InventorHarold F. Beal
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AssigneeDoris Nebel Beal Intervivos Patent Trust
InventorHarold F. Beal
Estimating the term…
Method of manufacture of a multi-component projectile 14 for gun ammunition 16 including the steps of providing a uniformly spherical ball 18 of a ductile metal, either solid metal or a self-supporting pressed compact of metal powder particles, inserting the metal ball into the open end 10 of a cup-shaped jacket 54 which houses at least one core 30, the ball being disposed between that end of the core adjacent the open end of the jacket and the open end of the jacket. Axially directed pressure against the ball deforms the ball into a generally flat disc 36. Simultaneously, the core 30 may be seated within the closed end 26 of the jacket. Thereafter, the jacket/core/disc combination is die-formed to define an ogive 42 at the open end of the jacket. This action, among other things, deforms that end of the core adjacent the ogive, the disc and the open end of the jacket into the desired ogive geometry, the disc being deformed into a cap 70 of generally hollow hemispherical geometry and containing powder particles 50 from the core within the hollow of the cap.
A method of manufacturing a gun ammunition multi-component projectile including at least one powder-based core disposed within a jacket of generally cup-shape having a closed end and an open end and a longitudinal centerline comprising the steps of
In a method of manufacture of a gun ammunition projectile including a jacket having an open end and a closed end, the improvement comprising the step of forming a seal for the open end of the jacket from a spherical member disposed within the jacket.
The improvement of claim 7 and including the steps of disposing a powder-based core within the jacket, followed by the disposition of said spherical member within the jacket between the core and the open end of the jacket, disposing the jacket and its contained core and spherical member in a die, applying sufficient pressure against said spherical member, hence against said core, to deform said spherical member into a substantially disc geometry, and thereafter in a different die, applying pressure to the closed end of the jacket having the core and disc disposed therein to at least partially close the open end of the jacket and define an ogive on said partially closed end, said latter pressure being sufficient to also deform said disc into a generally hollow hemispherical geometry which seals the at least partially closed open end of the jacket.
In a projectile including a powder-based core disposed within a jacket having an open end, a closed end and a longitudinal centerline, the improvement comprising a cap formed by die pressing a spherical member disposed within the jacket between the core and the open end of the jacket into a generally hollow hemispherical geometry which is disposed in sealing relationship to the open end of the jacket.
The improvement of claim 10 wherein said spherical member is formed from a solid metal or a self-supporting pressed quantity of at least one metal powder.
Dependencies are inferred from the claim text.