US 9,587,918 B1Granted

Ammunition having a projectile made by metal injection molding

AssigneeTrue Velocity, Inc.

InventorLonnie Burrow

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Abstract

The present invention provides ammunition having a metal injection molded projectile and a metal cartridge case comprising a metal ammunition cartridge comprising a unitary body that enclose a propellant chamber, a primer recess in a bottom portion of the unitary body, a primer flash hole that connects the primer recess and the propellant chamber, and a projectile aperture in communication with the propellant chamber; a primer inserted into the primer flash hole aperture; a propellant at least partially filling the propellant chamber; and a metal injection molded projectile frictionally fitted in the projectile aperture, wherein the metal injection molded projectile comprises a nose extending essentially symmetrically to a shoulder, and an essentially cylindrical bearing surface extending from the shoulder to a base.

Claims19

Dependent claims

An ammunition having a metal injection molded projectile and a metal cartridge case comprising:

a metal ammunition cartridge comprising a body that enclose a propellant chamber, a primer recess in a bottom portion of the unitary body, a primer flash hole that connects the primer recess and the propellant chamber, and a projectile aperture in communication with the propellant chamber, wherein the metal ammunition cartridge comprises stainless steel, ceramic alloys, copper/cobalt/nickel/custom alloys, tungsten, tungsten carbide, carballoy, ferro-tungsten, titanium, cobalt, nickel, alumina oxide, zirconia and aluminum;
a primer inserted into the primer flash hole aperture;
a propellant at least partially filling the propellant chamber;
and
a metal injection molded projectile frictionally fitted in the projectile aperture, wherein the metal injection molded projectile comprises a nose extending essentially symmetrically to a shoulder, and an essentially cylindrical bearing surface extending from the shoulder to a base, wherein the metal injection molded projectile comprises stainless steel, brass, ceramic alloys, copper/cobalt/nickel/alloys, tungsten, tungsten carbide, carballoy, ferro-tungsten, titanium, copper, cobalt, nickel, uranium, depleted uranium, alumina oxide, zirconia and aluminum.

2 more elements

An ammunition having a metal injection molded projectile and a metal cartridge case comprising:

a metal ammunition cartridge comprising a body that enclose a propellant chamber, a primer recess in a bottom portion of the unitary body, a primer flash hole that connects the primer recess and the propellant chamber, and a projectile aperture in communication with the propellant chamber, wherein the metal ammunition cartridge comprises
2-16% Ni, 10-20% Cr, 0-5% Mo, 0-0.6% C, 0-6.0% Cu, 0-0.5% Nb+Ta, 0-4.0% Mn, 0-2.0% Si and the balance Fe;
2-6% Ni, 13.5-19.5% Cr, 0-0.10% C, 1-7.0% Cu, 0.05-0.65% Nb+Ta, 0-3.0% Mn, 0-3.0% Si and the balance Fe;
3-5% Ni, 15.5-17.5% Cr, 0-0.07% C, 3-5.0% Cu, 0.15-0.45% Nb+Ta, 0-1.0% Mn, 0-1.0% Si and the balance Fe;
10-14% Ni, 16-18% Cr, 2-3% Mo, 0-0.03% C, 0-2% Mn, 0-1% Si and the balance Fe;
12-14% Cr, 0.15-0.4% C, 0-1% Mn, 0-1% Si and the balance Fe;
16-18% Cr, 0-0.05% C, 0-1% Mn, 0-1% Si and the balance Fe;
3-12% Al, 2-8% V, 0.1-0.75% iron, 0.1-0.5% O, and the remainder Ti;
or
6% Al, about 4% V, about 0.25% iron, about 0.2% O, and the remainder Ti;
a primer inserted into the primer flash hole aperture;
a propellant at least partially filling the propellant chamber;
and
a metal injection molded projectile frictionally fitted in the projectile aperture, wherein the metal injection molded projectile comprises a nose extending essentially symmetrically to a shoulder, and an essentially cylindrical bearing surface extending from the shoulder to a base, wherein the metal injection molded projectile comprises
2-16% Ni, 10-20% Cr, 0-5% Mo, 0-0.6% C, 0-6.0% Cu, 0-0.5% Nb+Ta, 0-4.0% Mn, 0-2.0% Si and the balance Fe;
2-6% Ni, 13.5-19.5% Cr, 0-0.10% C, 1-7.0% Cu, 0.05-0.65% Nb+Ta, 0-3.0% Mn, 0-3.0% Si and the balance Fe;
3-5% Ni, 15.5-17.5% Cr, 0-0.07% C, 3-5.0% Cu, 0.15-0.45% Nb+Ta, 0-1.0% Mn, 0-1.0% Si and the balance Fe;
10-14% Ni, 16-18% Cr, 2-3% Mo, 0-0.03% C, 0-2% Mn, 0-1% Si and the balance Fe;
12-14% Cr, 0.15-0.4% C, 0-1% Mn, 0-1% Si and the balance Fe;
16-18% Cr, 0-0.05% C, 0-1% Mn, 0-1% Si and the balance Fe;
3-12% aluminum, 2-8% vanadium, 0.1-0.75% iron, 0.1-0.5% oxygen, and the remainder titanium;
or
6% aluminum, about 4% vanadium, about 0.25% iron, about 0.2% oxygen, and the remainder titanium.

20 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/863,701Filed 24 Sep 2015
Published: US 2017/0089672 A130 Mar 2017
Granted: 7 Mar 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F42B 5/02
Cartridge ammunition, e.g. separately-loaded propellant charges: cartridges, i.e. cases with charge and missile
F42B 12/745
Of the core or solid body: the core being made of plastics; Compounds or blends of plastics and other materials, e.g. fillers
F42B 5/285
Of metal , i.e. the cartridge-case tube is of metal: formed by assembling several elements
F42B 5/307
Of plastics , i.e. the cartridge-case tube is of plastics: formed by assembling several elements