US2654319A - Sectional cartridge - Google Patents

Sectional cartridge Download PDF

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Publication number
US2654319A
US2654319A US20269250A US2654319A US 2654319 A US2654319 A US 2654319A US 20269250 A US20269250 A US 20269250A US 2654319 A US2654319 A US 2654319A
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Prior art keywords
shell
cartridge
cup
skirt
depression
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
Jack W Roske
Original Assignee
Jack W Roske
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/26Cartridge cases
    • F42B5/30Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics
    • F42B5/307Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics formed by assembling several elements

Description

Oct. 6, 1953 .1. w. ROSKE SECTIONAL CARTRIDGE Filed Dec. 26, 1950 0 6 4 0 M 3 l 2 e M 4 .M 23 W F Q. a w 6 a 2 0 6 W 3 2 m w M \\\\\\N\\\\\ M. a F 2 a A. n n4 m F INVENTOR.

Patented Oct. 6, 1953 UNITED STATES PATENT OFFICE SECTIONAL CARTRIDGE Jack W. Roske, Crescent City, Calif.

Application December 26, 1950, Serial No. 202,692

2 Claims. 1

This invention relates to new and useful improvements in cartridges and the primary object of the present invention is to provide a sectional cartridge including a base cup, a shell and a novel and improved means for permanently securing the shell and cup together.

Another important object of the present invention is to provide a sectional cartridge including a plastic shell that will be converted to gas during the firing phase to assist in propelling the projectile and thereby permit reduction in the use of the propelling powder charge.

A further object of the present invention is to provide a sectional cartridge including a colored plastic shell that will indicate the type of projectile, thus eliminating the need for painting the tip of theprojectile.

A still further aim of the present invention is to provide a sectional cartridge that is extremely lighter in weight than all brass cartridges and which will permit reduction in the use of critical materials such as brass, copper and zinc.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is an elevational view of the present cartridge;

Figure 2 is a vertical sectional view of the present cartridge and showing the shell partially inserted in the cup; and,

Figure 3 is a vertical sectional view of the shell interlocked with the cup.

Referring now to the drawings in detail, wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral represents the completed cartridge composed of a hollow plastic shell l2 and a base or cup [4 that is fabricated of metal, such as cartridge brass, an aluminum alloy, iron, steel, or other suitable metal.

The cup I I is formed with an inwardly tapering smoothly curved recess Hi, the inner wall of which is formed with a conical depression I8. A conical lug or cam is integrally formed with the cup 14 and is disposed axially within the depression I8. The lug 20 is formed with an axial bore 22 that communicates with a primer pocket 24 in the undersurface of the cup [4.

The shell l2 includes an inwardly tapered and smoothly curved lower or inner end 26 that is integrally formed with a cylindrical skirt or lip portion 28. A peripheral shoulder 30 is provided 2 about the shell l2 at its juncture with the end 25. The end 26 is formed with an axial bore or vent 32 that will register with the bore 22 when the shell is secured to the cup.

As the shell I2 is forced into the cup, the end 26- will contact the wall of the recess l6 and the cam 20 will spread the skirt 2B and force the outer surface of the skirt against the wall of the depression Hi to frictionally lock the shell and cup together. Any suitable cement may be inserted into the depression I8 to cause the skirt 28 to adhere to the wall of the depression I8.

Since the shell is constructed of plastic, the skirt 28 may be heated to a predetermined temperature before the end 26 is inserted into the recess l6 permitting flaring of the skirt outwardly by the cam 20 and the skirt to adhere to the wall of the depression [8.

The shoulder 30 will abut one end of the cupto properly seal the end 26 in the recess I6 and the body or shell I2 is constructed of colored plastic to indicate the type cartridge and thereby eliminates the necessity of coloring or painting the projectile tip 34.

The cartridge is intended primarily for use in aircraft machine guns and cannons where a reduction in weight of the individual cartridge is of great importance, allowing a greater number of rounds to be carried.

It should be noted that the metal base acts as a gas seal to the rear, preventing damage to the gun and injury to the firer. A suitable cement may be placed in the curved portion I6 01 the base to form a solid and watertight band between the base and shell. This may be preferable to placing cement in the depression l8 with the possibility of getting cement in the vent, which could cause a misfire.

In view of the foregoing description taken in conjunction with the accompanying drawings, it is believed that a. clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention, the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A sectional cartridge comprising a plastic shell having a. smoothly curved and tapered inner end, a metallic cup having a smoothly curved and tapered recess receiving the inner end of said shell, a peripheral shoulder on the shell abutting the cup, the inner wall of said recess having a conical depression therein, an upwardly extending conical lug forming the inner wall of said depression, and a skirt at the inner end of said shell for engaging said lug to be wedgingly fitted in said depression to secure the cup to the shell asftlie innernendsof thelshell isinserteduin the recess, said skirt; being provided with:an.axial bore having 'a tapered upper end whose walls engage the upper end of said conical lug as the skirt is fitted in said depression.

2. A sectional cartridge comprising ;a rplastic' portion of the shell, the lower wall of said recess having a continuous groove therein, said groove 1 having rlatera'lly and :uniformly spaced innerand routervwalls inclined relative to" the longitudinal axisof the cap and extending downwardly and outwardly from the recess, said skirt riding against the inner wall of said groove and against the outer wall of said groove to lock the shell and

US2654319A 1950-12-26 1950-12-26 Sectional cartridge Expired - Lifetime US2654319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2654319A US2654319A (en) 1950-12-26 1950-12-26 Sectional cartridge

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Application Number Priority Date Filing Date Title
US2654319A US2654319A (en) 1950-12-26 1950-12-26 Sectional cartridge

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US2654319A true US2654319A (en) 1953-10-06

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US2654319A Expired - Lifetime US2654319A (en) 1950-12-26 1950-12-26 Sectional cartridge

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Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007215B (en) * 1953-12-30 1957-04-25 Lars Ringdal Patronenhuelse of light metal
US2862446A (en) * 1955-08-15 1958-12-02 Kupag Kumststoff Patent Verwal Cartridge
US2996988A (en) * 1958-03-04 1961-08-22 Hughes Tool Company Aircraft D Cartridge for firearms having sideloaded firing chambers
US3026802A (en) * 1958-12-16 1962-03-27 Fredrick R Barnet Plastics lightweight cartridge case
US3029705A (en) * 1959-08-18 1962-04-17 Amp Inc Closure member for the firing chamber of an explosively-operated device
DE1157967B (en) * 1958-11-03 1963-11-21 Karl Gronn blank
US3207074A (en) * 1963-12-30 1965-09-21 Marlin A Kinna Plastics projector charge cartridge case
US3444812A (en) * 1965-12-22 1969-05-20 Dynamit Nobel Ag Cartridge
US3688699A (en) * 1970-01-12 1972-09-05 Federal Cartridge Corp Self-retaining reload capsule for shotgun shells
US3745924A (en) * 1970-03-30 1973-07-17 Remington Arms Co Inc Plastic cartridge case
US3771452A (en) * 1972-04-07 1973-11-13 Us Army Reinforcing movable head for protection against ruptured cartridge cases
FR2404192A1 (en) * 1977-09-27 1979-04-20 Herstal Sa Socket for hunting cartridge SYNTHETIC
US4565131A (en) * 1984-09-17 1986-01-21 Buchner Delmer B Cartridge assembly
US4593621A (en) * 1984-09-17 1986-06-10 Buchner Delmer B Cartridge assembly
US6752084B1 (en) 1999-01-15 2004-06-22 Amtech, Inc. Ammunition articles with plastic components and method of making ammunition articles with plastic components
US20050081704A1 (en) * 2003-05-29 2005-04-21 Nabil Husseini Ammunition articles and method of making ammunition articles
US20050257711A1 (en) * 1999-01-15 2005-11-24 Natec, Inc. A Cartridge Casing Body And An Ammunition Article Having A Cartridge Casing Body Wherein The Cartridge Casing Body Is Plastic, Ceramic, Or A Composite Material
US20090044717A1 (en) * 1999-01-15 2009-02-19 Development Capital Managment Company base for a cartridge casing body for an ammunition article, a cartridge casing body and an ammunition article having such base, wherein the base is made from plastic, ceramic, or a composite material
US20120180688A1 (en) * 2011-01-14 2012-07-19 Pcp Ammunition Company Llc High strength polymer-based cartridge casing and manufacturing method
WO2013096848A1 (en) 2011-12-22 2013-06-27 LEMKE, Paul Polymer-based composite casings and ammunition containing the same, and methods of making and using the same
US8573126B2 (en) 2010-07-30 2013-11-05 Pcp Tactical, Llc Cartridge base and plastic cartridge case assembly for ammunition cartridge
US8763535B2 (en) 2011-01-14 2014-07-01 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge casing for blank and subsonic ammunition
US8807008B2 (en) 2011-01-14 2014-08-19 Pcp Tactical, Llc Polymer-based machine gun belt links and cartridge casings and manufacturing method
USD715888S1 (en) * 2012-01-13 2014-10-21 Pcp Tactical, Llc Radiused insert
US8869702B2 (en) 2011-01-14 2014-10-28 Pcp Tactical, Llc Variable inside shoulder polymer cartridge
WO2015109033A1 (en) 2014-01-14 2015-07-23 Polycase Ammunition, Llc Methods and apparatus for making molded objects, and molded objects made therefrom
US20150241183A1 (en) * 2011-01-14 2015-08-27 Pcp Tactical, Llc Overmolded high strength polymer-based cartridge casing for blank and subsonic ammunition
US20150300791A1 (en) * 2013-10-15 2015-10-22 Olin Corporation Composite cartridge case
US20160003589A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Lightweight polymer ammunition cartridge casings
US20160003587A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Polymer ammunition cartridge having a wicking texturing
US9470485B1 (en) 2004-03-29 2016-10-18 Victor B. Kley Molded plastic cartridge with extended flash tube, sub-sonic cartridges, and user identification for firearms and site sensing fire control
US9506735B1 (en) 2016-03-09 2016-11-29 True Velocity, Inc. Method of making polymer ammunition cartridges having a two-piece primer insert
US9518810B1 (en) 2016-03-09 2016-12-13 True Velocity, Inc. Polymer ammunition cartridge having a two-piece primer insert
US9523563B1 (en) 2016-03-09 2016-12-20 True Velocity, Inc. Method of making ammunition having a two-piece primer insert
US9551557B1 (en) 2016-03-09 2017-01-24 True Velocity, Inc. Polymer ammunition having a two-piece primer insert
USD778391S1 (en) * 2015-04-28 2017-02-07 True Velocity, Inc. Notched cartridge base insert
USD779021S1 (en) * 2015-04-28 2017-02-14 True Velocity, Inc. Cylindrically square cartridge base insert
US9587918B1 (en) 2015-09-24 2017-03-07 True Velocity, Inc. Ammunition having a projectile made by metal injection molding
USD781393S1 (en) * 2015-04-28 2017-03-14 True Velocity, Inc. Notched cartridge base insert
US9644930B1 (en) * 2010-11-10 2017-05-09 True Velocity, Inc. Method of making polymer ammunition having a primer diffuser
US9835427B2 (en) 2016-03-09 2017-12-05 True Velocity, Inc. Two-piece primer insert for polymer ammunition
US9869536B2 (en) 2016-03-09 2018-01-16 True Velocity, Inc. Method of making a two-piece primer insert
US9885551B2 (en) 2010-11-10 2018-02-06 True Velocity, Inc. Subsonic polymeric ammunition
US9921017B1 (en) 2013-03-15 2018-03-20 Victor B. Kley User identification for weapons and site sensing fire control
USD813975S1 (en) * 2015-08-05 2018-03-27 Mark White Low volume subsonic bullet cartridge case
US9939236B2 (en) 2015-07-27 2018-04-10 Shell Shock Technologies, Llc Method of making a casing and cartridge for firearm

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE213678C (en) *
US487125A (en) * 1892-11-29 Jacques antoine creuzx de latouche
GB189405277A (en) * 1894-03-13 1894-11-17 James Pinfold Improvements in the Manufacture of Cartridges, and in Apparatus therefor.
US1292359A (en) * 1916-01-17 1919-01-21 William C Nelson Cartridge-shell.
GB560344A (en) * 1941-10-28 1944-03-31 John Sidney Shufflebotham Improvements in or relating to cartridge cases

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE213678C (en) *
US487125A (en) * 1892-11-29 Jacques antoine creuzx de latouche
GB189405277A (en) * 1894-03-13 1894-11-17 James Pinfold Improvements in the Manufacture of Cartridges, and in Apparatus therefor.
US1292359A (en) * 1916-01-17 1919-01-21 William C Nelson Cartridge-shell.
GB560344A (en) * 1941-10-28 1944-03-31 John Sidney Shufflebotham Improvements in or relating to cartridge cases

Cited By (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007215B (en) * 1953-12-30 1957-04-25 Lars Ringdal Patronenhuelse of light metal
US2862446A (en) * 1955-08-15 1958-12-02 Kupag Kumststoff Patent Verwal Cartridge
US2996988A (en) * 1958-03-04 1961-08-22 Hughes Tool Company Aircraft D Cartridge for firearms having sideloaded firing chambers
DE1157967B (en) * 1958-11-03 1963-11-21 Karl Gronn blank
US3026802A (en) * 1958-12-16 1962-03-27 Fredrick R Barnet Plastics lightweight cartridge case
US3029705A (en) * 1959-08-18 1962-04-17 Amp Inc Closure member for the firing chamber of an explosively-operated device
US3207074A (en) * 1963-12-30 1965-09-21 Marlin A Kinna Plastics projector charge cartridge case
US3444812A (en) * 1965-12-22 1969-05-20 Dynamit Nobel Ag Cartridge
US3688699A (en) * 1970-01-12 1972-09-05 Federal Cartridge Corp Self-retaining reload capsule for shotgun shells
US3745924A (en) * 1970-03-30 1973-07-17 Remington Arms Co Inc Plastic cartridge case
US3771452A (en) * 1972-04-07 1973-11-13 Us Army Reinforcing movable head for protection against ruptured cartridge cases
FR2404192A1 (en) * 1977-09-27 1979-04-20 Herstal Sa Socket for hunting cartridge SYNTHETIC
US4192233A (en) * 1977-09-27 1980-03-11 Fabriqe Nationale Herstal, en abrege FN Shell for sporting cartridge of plastic material
US4565131A (en) * 1984-09-17 1986-01-21 Buchner Delmer B Cartridge assembly
US4593621A (en) * 1984-09-17 1986-06-10 Buchner Delmer B Cartridge assembly
US20060011087A1 (en) * 1999-01-15 2006-01-19 Natec, Inc. Ammunition articles with plastic components and method of making ammunition articles with plastic components
US6845716B2 (en) 1999-01-15 2005-01-25 Natec, Inc. Ammunition articles with plastic components and method of making ammunition articles with plastic components
US6752084B1 (en) 1999-01-15 2004-06-22 Amtech, Inc. Ammunition articles with plastic components and method of making ammunition articles with plastic components
US20050188883A1 (en) * 1999-01-15 2005-09-01 Natec, Inc. Ammunition articles with plastic components and method of making ammunition articles with plastic components
US20050257711A1 (en) * 1999-01-15 2005-11-24 Natec, Inc. A Cartridge Casing Body And An Ammunition Article Having A Cartridge Casing Body Wherein The Cartridge Casing Body Is Plastic, Ceramic, Or A Composite Material
US20090044717A1 (en) * 1999-01-15 2009-02-19 Development Capital Managment Company base for a cartridge casing body for an ammunition article, a cartridge casing body and an ammunition article having such base, wherein the base is made from plastic, ceramic, or a composite material
US20070044644A1 (en) * 2003-05-29 2007-03-01 Natec, Inc. Ammunition Article And Apparatus For Making Ammunition Articles
US20050081704A1 (en) * 2003-05-29 2005-04-21 Nabil Husseini Ammunition articles and method of making ammunition articles
US7059234B2 (en) 2003-05-29 2006-06-13 Natec, Inc. Ammunition articles and method of making ammunition articles
US9891030B1 (en) 2004-03-29 2018-02-13 Victor B. Kley Molded plastic cartridge with extended flash tube, sub-sonic cartridges, and user identification for firearms and site sensing fire control
US9470485B1 (en) 2004-03-29 2016-10-18 Victor B. Kley Molded plastic cartridge with extended flash tube, sub-sonic cartridges, and user identification for firearms and site sensing fire control
US9989343B2 (en) * 2010-07-30 2018-06-05 Pcp Tactical, Llc Base insert for polymer ammunition cartridges
US8573126B2 (en) 2010-07-30 2013-11-05 Pcp Tactical, Llc Cartridge base and plastic cartridge case assembly for ammunition cartridge
US9599443B2 (en) 2010-07-30 2017-03-21 Pcp Tactical, Llc Base insert for polymer ammunition cartridges
US9885551B2 (en) 2010-11-10 2018-02-06 True Velocity, Inc. Subsonic polymeric ammunition
US20160003595A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Method of making a polymer ammunition cartridge having a metal injection molded primer insert
US9835423B2 (en) * 2010-11-10 2017-12-05 True Velocity, Inc. Polymer ammunition having a wicking texturing
US9644930B1 (en) * 2010-11-10 2017-05-09 True Velocity, Inc. Method of making polymer ammunition having a primer diffuser
US9631907B2 (en) * 2010-11-10 2017-04-25 True Velocity, Inc. Polymer ammunition cartridge having a wicking texturing
US9927219B2 (en) 2010-11-10 2018-03-27 True Velocity, Inc. Primer insert for a polymer ammunition cartridge casing
US9546849B2 (en) 2010-11-10 2017-01-17 True Velocity, Inc. Lightweight polymer ammunition cartridge casings
US9513096B2 (en) 2010-11-10 2016-12-06 True Velocity, Inc. Method of making a polymer ammunition cartridge casing
US9933241B2 (en) 2010-11-10 2018-04-03 True Velocity, Inc. Method of making a primer insert for use in polymer ammunition
US20160003589A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Lightweight polymer ammunition cartridge casings
US20160003596A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Method of making polymer ammunition having a metal injection molded primer insert
US9441930B2 (en) 2010-11-10 2016-09-13 True Velocity, Inc. Method of making lightweight polymer ammunition
US20160003597A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Method of making a polymer ammunition cartridge having a wicking texturing
US20160003587A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Polymer ammunition cartridge having a wicking texturing
US20160003601A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Metal injection molded primer insert for polymer ammunition
US20160003590A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Polymer ammunition cartridge having a metal injection molded primer insert
US20160003588A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Polymer ammunition having a wicking texturing
US20160003594A1 (en) * 2010-11-10 2016-01-07 True Velocity, Inc. Method of making polymer ammunition having a wicking texturing
US9429407B2 (en) 2010-11-10 2016-08-30 True Velocity, Inc. Lightweight polymer ammunition
US8807008B2 (en) 2011-01-14 2014-08-19 Pcp Tactical, Llc Polymer-based machine gun belt links and cartridge casings and manufacturing method
US9372054B2 (en) 2011-01-14 2016-06-21 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge casing for blank and subsonic ammunition
US9003973B1 (en) 2011-01-14 2015-04-14 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge casing for blank and subsonic ammunition
US20160169641A1 (en) * 2011-01-14 2016-06-16 Pcp Tactical, Llc Frangible portion for a high strength polymer-based cartridge casing and manufacturing method
US9261335B2 (en) 2011-01-14 2016-02-16 Pcp Tactical, Llc Frangible portion for a high strength polymer-based cartridge casing and manufacturing method
US9194680B2 (en) 2011-01-14 2015-11-24 Pcp Tactical, Llc Polymer-based machine gun belt links and cartridge casings and manufacturing method
US20120180688A1 (en) * 2011-01-14 2012-07-19 Pcp Ammunition Company Llc High strength polymer-based cartridge casing and manufacturing method
US8869702B2 (en) 2011-01-14 2014-10-28 Pcp Tactical, Llc Variable inside shoulder polymer cartridge
US8443730B2 (en) * 2011-01-14 2013-05-21 Pcp Tactical, Llc High strength polymer-based cartridge casing and manufacturing method
US8875633B2 (en) 2011-01-14 2014-11-04 Pcp Tactical, Llc Adhesive lip for a high strength polymer-based cartridge casing and manufacturing method
US20150241183A1 (en) * 2011-01-14 2015-08-27 Pcp Tactical, Llc Overmolded high strength polymer-based cartridge casing for blank and subsonic ammunition
US9995561B2 (en) 2011-01-14 2018-06-12 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge for blank and subsonic ammunition
US8763535B2 (en) 2011-01-14 2014-07-01 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge casing for blank and subsonic ammunition
WO2013096848A1 (en) 2011-12-22 2013-06-27 LEMKE, Paul Polymer-based composite casings and ammunition containing the same, and methods of making and using the same
US9683818B2 (en) 2011-12-22 2017-06-20 Polycase Ammunition, Llc Polymer-based composite casings and ammunition containing the same, and methods of making and using the same
USD765214S1 (en) 2012-01-13 2016-08-30 Pcp Tactical, Llc Radiused insert
USD715888S1 (en) * 2012-01-13 2014-10-21 Pcp Tactical, Llc Radiused insert
US9921017B1 (en) 2013-03-15 2018-03-20 Victor B. Kley User identification for weapons and site sensing fire control
US20150300791A1 (en) * 2013-10-15 2015-10-22 Olin Corporation Composite cartridge case
WO2015109033A1 (en) 2014-01-14 2015-07-23 Polycase Ammunition, Llc Methods and apparatus for making molded objects, and molded objects made therefrom
USD781393S1 (en) * 2015-04-28 2017-03-14 True Velocity, Inc. Notched cartridge base insert
USD779021S1 (en) * 2015-04-28 2017-02-14 True Velocity, Inc. Cylindrically square cartridge base insert
USD778391S1 (en) * 2015-04-28 2017-02-07 True Velocity, Inc. Notched cartridge base insert
US9939236B2 (en) 2015-07-27 2018-04-10 Shell Shock Technologies, Llc Method of making a casing and cartridge for firearm
USD813975S1 (en) * 2015-08-05 2018-03-27 Mark White Low volume subsonic bullet cartridge case
US9587918B1 (en) 2015-09-24 2017-03-07 True Velocity, Inc. Ammunition having a projectile made by metal injection molding
US9869536B2 (en) 2016-03-09 2018-01-16 True Velocity, Inc. Method of making a two-piece primer insert
US9551557B1 (en) 2016-03-09 2017-01-24 True Velocity, Inc. Polymer ammunition having a two-piece primer insert
US9523563B1 (en) 2016-03-09 2016-12-20 True Velocity, Inc. Method of making ammunition having a two-piece primer insert
US9518810B1 (en) 2016-03-09 2016-12-13 True Velocity, Inc. Polymer ammunition cartridge having a two-piece primer insert
US9506735B1 (en) 2016-03-09 2016-11-29 True Velocity, Inc. Method of making polymer ammunition cartridges having a two-piece primer insert
US9835427B2 (en) 2016-03-09 2017-12-05 True Velocity, Inc. Two-piece primer insert for polymer ammunition

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