EP0358750B1 - Composite cartridge for high velocity rifles and the like - Google Patents

Composite cartridge for high velocity rifles and the like Download PDF

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Publication number
EP0358750B1
EP0358750B1 EP89903385A EP89903385A EP0358750B1 EP 0358750 B1 EP0358750 B1 EP 0358750B1 EP 89903385 A EP89903385 A EP 89903385A EP 89903385 A EP89903385 A EP 89903385A EP 0358750 B1 EP0358750 B1 EP 0358750B1
Authority
EP
European Patent Office
Prior art keywords
head
casing
cartridge
bullet
powder
Prior art date
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
Application number
EP89903385A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0358750A4 (en
EP0358750A1 (en
Inventor
Inc. Amtech-Overseas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amtech-Overseas Inc
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP0358750A1 publication Critical patent/EP0358750A1/en
Publication of EP0358750A4 publication Critical patent/EP0358750A4/en
Application granted granted Critical
Publication of EP0358750B1 publication Critical patent/EP0358750B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/26—Cartridge cases
    • F42B5/30—Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics
    • F42B5/307—Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics formed by assembling several elements

Definitions

  • This invention relates to improvements in the ammunition art, and specifically to improvements in the ammunition of the type used in high power rifles of all calibers in which an elastomer or plastic is used for a predominant portion of the casing which houses the powder and positions the projectile.
  • the casing is made of a synthetic polymer composition attached to a metallic head positioned at the opposite end of the cartridge from the projectile.
  • Cartridges of this general type have been known in the literature for many years but have for one reason or another, failed to provide a satisfactory ammunition for sustained automatic fire in the modern automatic weapons widely used in police, paramilitary and military situations.
  • Cartridges of this type are also used in large quantities as blank rifle cartridges in which the head end of the cartridge case continues into the imitation shape of a plastic projectile which constitutes an integral part of the cartridge case and has a notch or groove forming a predetermined rupture zone. These cartridges are loaded with a nominal amount of powder and are used as training and simulation aids without a projectile of the usual type. Because of the nominal loading of powder, cartridges of this type may not develop enough chamber pressure to operate the gas-operated automatic ejection and reloading mechanisms used in military type automatic weapons.
  • a plastic rifle cartridge should usually have a metal cap or head to carry the primer and to provide the ejection groove necessary to eject the spent cartridge from the firing chamber.
  • a reinforced cap or head area to contain residual pressures in the cartridge occasionally encountered when the ejection cycle begins removal of the cartridge from the chamber before the pressure effects of the recent firing have fully dissipated.
  • a rifle cartridge must develop a consistently high chamber pressure level for each round.
  • the brass casing includes an integrally formed head containing a primer cup to receive a primer adapted to ignite a powder charge at one end, and at the other end provides a mechanical interfit to a bullet.
  • the grip of the cartridge upon the bullet, together with the amount and characteristics of the powder, the interior volume of the powder chamber and other factors determine the chamber pressure levels developed during the firing cycle.
  • the bullet or other projectile is held in place with a crimp or frictional engagement, the strength of which is a factor in determining the pressure needed to initiate bullet movement into the barrel of the rifle.
  • Brass casings can be reloaded and thereby reused but suffer from several disadvantages, including weight. In addition, special tooling is necessary for reloading. Brass is also a relatively expensive metal which may be in short supply in some areas of the world, particularly in the event of war.
  • Expendable aluminum casings have been developed but generally are not reusable, making the ultimate cost of the aluminum casing comparable to brass. An extensive amount of precision metalworking equipment is necessary to form the casings from either brass or aluminum.
  • the cartridge is formed of a composite plastic or metal and plastic casings which rely on multiple parts to provide the sealing around the end caps or head, and require a crimp about the bullet to hold the bullet in place.
  • the cost of producing and assembling a multiple piece casing is high and heretofore the composite casings have not accomplished the dual functions of sealing the head to the plastic casing and the plastic casing to the bullet in a manner which permits the resulting cartridge to be used in fully automatic rifle firing applications.
  • CH-A 326952 discloses the precharacterising features of the independent claims.
  • DE-A-2 705 235 discloses a cartridge which has a casing and a head, the head having a tapered casing-receiving recess which extends around an external interlock surface of the casing.
  • Another object of this invention is to provide a cartridge which has a frangible pressure control bulkhead or partition which imparts pressure and force against the base of the bullet after a threshold level of pressure is attained to assure optimum powder ignition and complete burning.
  • a still further object of this invention is to provide ammunition in a cartridge in which the bullet can be inserted or removed easily without exposing the powder.
  • One further object of this invention is to provide a cartridge for rifle use which can have its powder load inserted from the base or head end of other cartridge without the presence of the bullet.
  • Another object of this invention is to provide a cartridge for use in a rifle which has a light frictional interfit with its bullet and no crimp or its equivalent to hold the bullet in place, for smooth and reproducible ejection of the bullet from the cartridge upon firing.
  • a tubular plastic casing made of a durable but elastic plastic material such as nylon which has the structural integrity to remain intact around the area upon which a malleable skirt is swaged to form the interconnection between the plastic casing and the head.
  • the casing is formed by injection molding a relatively simple shape which may have draft angles built in to permit easy removal of the part from the male mould part.
  • a partition or pressure control septum is molded in at the bullet-receiving end of the casing to define a bullet receiving recess and a powder receiving recess.
  • a metal head is formed to slip on the end of the casing opposite the bullet receiving recess and be swaged into flared contact with the periphery of the casing in a sealed joint.
  • the head may be swaged prior to assembly and the elastomer casing forced into the head, the elastomer material being yieldable but possessing plastic memory sufficient to urge it toward its original shape and into firm contact with the interior surface of the head.
  • the head has a primer recess into which a primer may be inserted coaxially with the head and casing.
  • a primer flash hole or central vent extends coaxially into the powder chamber to ignite the powder upon detonation of the primer.
  • the powder chamber is defined by the plastic casing, the pressure regulating frangible partition and by the head when it has been inserted axially over the casing and the skirt or a part thereof swaged into a fared interlock with the casing or into a circumferential groove.
  • the volume of the powder chamber may be varied according to the type of powder being used so that the powder used fills the chamber to simplify loading and to optimize the burning characteristics of the powder.
  • the pressure regulating front partition preferably is thickened from the frangible annular periphery thereof toward the cartridge axis in a semi-spherical configuration to provide application of forces evenly across the base of the bullet.
  • the frangible partition functions to separate the powder chamber from the bullet receptacle, to seal the powder chamber at the forward end thereof and to provide a controlled pressure rupture threshold to controllably regulate the generation of pressure during the firing cycle so that the power of the powder is both maximized and controlled by regulating the pressure level at which the projectile begins to move.
  • the strength of the frangible annulus is tailored to the powder type and charge to provide the optimum powder burn cycle by increasing or decreasing the thickness during molding and by choice of the elastomer used.
  • Fig. 1 shows an exploded perspective view of the composite cartridge of this invention for use with a boat tail bullet.
  • Fig. 2 shows one embodiment of this invention with the casing and head in cross section.
  • Fig. 3 is a partial cross sectional view of a second embodiment of the cartridge of this invention for use with a flat base bullet.
  • Fig.4 is an enlarged axial cross sectional view of the cartridge shown in Fig. 1.
  • Fig 5 is an enlarged axial cross sectional view of another embodiment of this invention.
  • Fig. 6 is a cross sectional view of the partially manufactured metallic head useful in one embodiment of this invention.
  • Fig. 7 is a cross sectional view of the device shown in Fig. 6 after a extraction groove cutting and forming step.
  • Fig. 8 is a cross sectional view of the device shown in Fig. 7 with an adhesive material applied to the interior surface thereof.
  • Fig. 9 shows a cross sectional representation of the final assembly step to unite the plastic casing to the metallic head in one embodiment of this invention.
  • FIG. 1 an exploded view of one embodiment of this invention.
  • a rifle cartridge suitable for use with high velocity rifles is shown manufactured with a polymer case 12 and a metallic head 14.
  • a bullet 10 having a circumferential groove 60 is shown positioned for insertion into the forward end of plastic casing 12.
  • a pressure regulating front partition 44 (best seen in Figs. 2 through 6) securely closes off the forward portion of outer chamber 36 and is adapted to receive the base 61 of bullet 10.
  • the forward portion of casing 12 has a thickened shoulder 42 forming chamber taper 40.
  • the shoulder 42 supports a frangible annular zone 48 which is engineered and designed to be severed cleanly completely around the periphery of the shoulder 42 when sufficient pressure is developed on the interior of powder chamber 36.
  • the pressure regulating front partition 44 has a semi cylindrical surface projecting rearwardly into the powder chamber 36 to aid in the even distribution of pressure to the bullet 10 upon detonation of the powder charge 38 contained in chamber 36.
  • the frangible annulus 48 is sized in thickness to provide the desired level of pressure before bursting so that a controlled powder detonation can occur and further to provide the more nearly controllable pressure application to the base of bullet 10.
  • the presence of the pressure regulating front partition 44 is made possible by the composite configuration of the cartridge.
  • the front partition 44 is molded as a part of and extends inwardly from shoulder 42.
  • the interior volume of powder chamber 36 may be varied to provide the volume necessary for complete filling of the chamber 36 by the powder chosen so that a simplified volumetric measure of powder can be utilized when loading the cartridge.
  • the end of plastic casing 12 opposite from the pressure regulating front partition 44 has means to engage and seal to a metallic head 14.
  • Casing 12 is formed with a tapered skirt interlock surface 30 adapted to mate with and interlock with the deformable skirt 20 of head 14.
  • the skirt interlock surface 30 preferably tapers from a larger diameter at the rearward most portion 64 thereof to a smaller diameter at the forward portion 65.
  • a swaging anvil 22 may be used to provide backing for swaging of head 14 onto plastic casing 12.
  • Anvil 22 is received within anvil recess 32 and provides support for the plastic casing 12 during the swaging process.
  • Chamfers 24 are provided for ease of insertion of the anvil into the casing.
  • Head 14 is formed in a high pressure head forming apparatus as is well known in the prior art.
  • the die used provides for a diverging deformable skirt 20 having a larger diameter at the skirt tip 54 and a relatively smaller diameter, approximating the outside diameter of head 14 at the skirt base 56.
  • the thickness of skirt 20 increases from skirt base 56 to skirt tip 54 so that when swaged into contact with the tapered skirt interlock surface 30 a faired substantially cylindrical surface along the entire length of the assembled cartridge will result with a physical interlock between head 14 and plastic casing 12.
  • Head 14 also has an extraction groove 26 cut therein and a primer recess 18 formed therein with primer chamfer 29 for ease of insertion of the primer 16.
  • the primer recess 18 is sized so as to receive the primer 16 in an interference fit during assembly.
  • a primer flash hole 28 communicates through the anvil central vent 34 into the powder chamber 36 so that upon detonation of primer 16 the powder in powder chamber 36 will be ignited.
  • An alternative structure would include a groove at portion 65 to receive a swaged tip section 54 in a head configuration without the flared skirt configuration described above.
  • Bullet 10 is held in place within bullet recess 50 by a frictional interfit.
  • the bullet may be inserted into place following the completion of the filling of powder chamber 36 and final assembly of the cartridge by swaging the deformable skirt 20 into contact with the tapered skirt interlock surface 30. In this way bullets of differing size and characteristics can be utilized and may even be interchanged without affecting or exposing the powder in powder chamber 36.
  • Fig. 3 Whenever a flat bottom bullet is used the configuration shown in Fig. 3 may be used to accommodate the particular bullet shape desired.
  • the shoulder 42' is formed with a smaller interior angle from the axis to accommodate the full diameter of bullet 11'.
  • the flat base 61' rests against the pressure regulating front partition 44' which is configured with a larger diameter so that the entire base 61' receives the pressure developed within chamber 36'.
  • Figs. 5 and 6 through 9 When it is desired to have a larger volume in powder chamber 36, the configurations shown in Figs. 5 and 6 through 9 may be utilized.
  • the anvil shown as 22 in Fig. 4
  • the deformable skirt 20 is swaged carefully against the surface of casing 12. Omitting the anvil permits a larger charge of powder to be placed into the casing.
  • the thickness of the plastic casing 12 and shoulder 42 can also be varied so that the volume of powder chamber 36 can be modified for various powder types and loads to provide a consistent performance with any given powder.
  • FIG. 6 Another alternative embodiment is shown in Figs. 6 through 9 in which the head 114 is formed and the deformable skirt thereof swaged prior to assembly with the plastic casing 112.
  • the head 114 is formed by known head forming techniques into the shape as shown with the deformable skirt 120 having a substantially cylindrical interior and a diverging exterior surface as shown.
  • the interior diameter b is formed so that the device may be removed from the die and the exterior surface diverges outwardly to the diameter c.
  • Annular extractor groove 126 is then cut into the formed head and the deformable skirt is swaged into the condition shown in Fig.
  • a chamfer 66 is provided to guide and press inwardly the end of the plastic cartridge 112 as is further described below.
  • a primer recess 116 and flash hole 128 are also formed in head 114 at the time it is formed.
  • FIG. 8 an adhesive 68 is shown spread on the interior surface of the casing recess 115.
  • the adhesive 68 is preferably a contact type cement compatible with the metal forming head 114 and the plastic material forming plastic casing 112.
  • Fig. 9 shows the assembly step following completion of the head and filling of the powder chamber 136 with powder.
  • Head 114 is positioned coaxially with the filled plastic casing 112 and the elements are moved axially together, forcing the rounded end 70 of plastic casing 112 into recess 115 until the rounded ends 70 abut upon the base 72 of recess 115.
  • the elastic memory of casing 112 will cause the end 70 of casing 112 to expand and contact the interior of recess 115 in a tight interference fit.
  • the diameter of rounded end 70 at portion 74 is shown in Fig. 9 as being equivalent to the interior diameter of recess 115 at the base thereof and larger than the diameter of portion 75.
  • the plastic casing firmly contacts the adhesive 68 forming a secure mechanical and water tight bond to hold the elements of the completed cartridge together.
  • the deformable skirt 20 or 120 extends far enough up the side of the casing to provide casing strength preventing blow out of the side of the casing during rapid automatic fire.
  • the adhesive is optional and may be omitted under circumstances in which the interfit between head and plastic casing is found to be adequate without the adhesive being used.
  • the experienced handloader or ammunition manufacturer will know that many powder types and weights can be used to prepare workable ammunition and that such loads may be determined by a careful trial including initial low quantity loading of a given powder and the well known stepwise increasing of a given powder loading until a maximum acceptable load is achieved. Extreme care and caution is advised in evaluating new loads.
  • the powders available have various burn rates and must be carefully chosen so that a safe load is devised.
  • the following examples show some of the stepwise progression of loads undertaken by the inventor to establish the acceptable chamber pressures, bullet velocities and performance at this inventor's present stage of development which reflect workable and usable ammunition.
  • Example 1 A cartridge of the type shown in Fig. 4 for use with the 5.56 ml. NATO (.223 caliber) high velocity rifle was prepared as follows: A 55 grain boat tail full metal jacket bullet was used of the type shown in Fig. 1.
  • the plastic casing 12 was formed from an unpigmented Dupont 901 super tough ST nylon available from E.I. Dupont, Wilmington, Delaware.
  • the pressure regulating front partition 44 was formed using a frangible annulus 48 having a thickness of 0.508 mm (0.020 inches). 21.4 grains of Hodgedon H-335 sperical powder, having a moderate burn rate, was used.
  • a CCI small rifle magnum primer manufactured by CCI Industries was inserted into the primer recess.
  • the round was fired through a 5.56 mm (.223 caliber) pressure barrel with 1 in 7 twist manufactured by Obermeyer Rifled Barrels attached to a universal receiver to determine the pressure developed in the chamber when fired.
  • a pressure of about 310 MPa (45,000 psi) was measured using the standard copper crush test.
  • Example 2 A cartridge identical to that described in Example 1 was prepared using 18.7 grains of Hodgedon H-335 with a pressure regulating front partition 44 having a frangible annulus with a thickness of 0.254 mm (0.010 inches). A chamber pressure of 200 MPa (30,000 psi) was observed upon firing.
  • Example 3 Cartridges loaded in accordance with example 1 were fired in a semiautomatic rapid fire mode in a 5.56 mm (.223 caliber) semi automatic rifle to evaluate the ejection of spent cartridges and performance. Thirty rounds were loaded into a clip and fired as rapidly as possible in the semi automatic mode. All 30 rounds were fired and were ejected successfully from the automatic ejection mechanism.
  • Example 4 Ten cartridges constructed as shown in figures 1, 2 and 4 was constructed using a head 14 made of 1010 steel alloy.
  • a CCI small rifle magnum primer was placed into the primer recess and 21.4 grains of BL-C-(2) powder which is a rapid burning powder was placed into the powder chamber 36.
  • the swaging anvil 22 was placed into the open end of the powder chamber 36, and the head 14 was carefully swaged about the exterior of the plastic casing 12.
  • the outer surface of the cartridge was smooth and faired at the intersection of the metal cap and the plastic case.
  • a 55 grain full metal jacket spire point boat tail bullet was inserted into the bullet recess.
  • the plastic casing had a pressure regulating front partition having a frangible annulus with a thickness of 0.508 mm (0.020 inches).
  • the round was fired in a universal receiver with the 5.56 mm (.223 caliber) barrel manufactured by Obermeyer attached thereto.
  • the rounds developed chamber pressures in the range of 260 to 300 MPa (38,000 to 40,000 psi) and were grouped in a 50 mm (2 inch) diameter circle upon a target set at 50 metres (50 yards).
  • Example 5 Several rounds identical to those described in Example 4 were prepared using 21.4 grains of Hodgedon H-335 powder. When fired the rounds developed a cylinder pressure of 300 to 310 MPa (43,000 to 45,000 psi).
  • Example 6 A round identical to those described in Example 4 was prepared but using a front pressure regulating partition having a frangible annulus thickness of 0.254 mm (0.010 inches). 21.4 grains of BL-C-(2) powder developed 230 MPa (33,000 psi) chamber pressure when discharged.
  • Example 7 A round identical to the round described in Example 6 was prepared but with a front pressure regulating partition having a frangible annulus of 0.508 mm (0.020 inches)thickness. Upon discharge the round developed 300 MPa (43,000 psi) chamber pressure.
  • Example 8 A round identical to the round described in Example 6 was prepared using 21.4 grains of Hodgedon H-335 powder. When discharged the round developed 230 MPa (33,000 psi) chamber pressure.
  • Example 9 A round was constructed using the procedure and structures shown in Figures 6-9. Low nitrogen content series 1010 steel was fed into a heading machine to form the head precursor form shown in Figure 6. The dimensions shown were as follows:
  • Bevel 66 was formed at about 30 degrees from the axis of the head 114.
  • the ejection grove 126 was then cut into head 114 and the skirt 120 swaged inwardly so that the outer surface of the head 114 was cylindrical along its entire length.
  • An adhesive material sold under the trade designation PRONTO-LINE CA-9, a product of 3M Corporation, Minneapolis Minnesota, was sprayed upon the interior of head 113 to form a band of adhesive 68. the adhesive was permitted to dry for 15 minutes.
  • 21.4 grains of Hodgedon H-335 powder was placed into a vertically oriented plastic casing having a pressure regulating front partition with a frangible annulus thickness of 0.508 mm (0.020 inches).
  • the head 114 was positioned above the plastic casing as shown in Fig. 9 and quickly and firmly thrust over the rounded upper end of casing 112, firmly seating the cap fully upon casing 112. Since the diameter b of the upper end of casing 112 extends the inside diameter e of head 114, the casing end was slightly deformed inwardly toward the axis and upon full engagement of the parts was returned to its former configuration due to the plastic memory of the casing material. The adhesive material then engaged the plastic surface to form a structural and water tight bond. A 55 grain spire point boat tail full metal jacket bullet was then inserted into the bullet recess and the cartridge fired in the universal receiver having a 0.5 metre (20 inch) 5.56 mm (.223 caliber) barrel noted above. The round developed 280 MPa (44,000 psi) chamber pressure and the bullet hit its intended target at 50 metres (50 yards).
  • Example 10 A test firing of twenty five cartridges manufactured and loaded as set forth in Example 4 with 18.0 grains of IMR 4198 powder with a comparison to factory ammunition was conducted by H.P. White Laboratory, Inc., 3114 Scarboro Road, Street, Maryland 21154. The ammunition tested was hand loaded by the inventor and was designated as 5.56 mm Plastic case with a 55 grain Sierra FMJBT bullet. The rounds were compared to 10 rounds of a conventional brass cased ammunition prepared and sold by Olin Corp., Winchester Division in 5.56 mm with a 55 grain FMJ bullet. All rounds tested were fired in a NATO pressure barrel, H.P. White Serial No. 10, having a barrel length of 0.5 metres (20 inches).
  • One additional alternative embodiment of this invention incorporates one or more interfitting circumferential groove and embossment means interconnecting the head with the elastomeric body of the cartridge.
  • the skirt portion 20 shown in Fig. 5 has raised embossments extending inwardly around the inner circumference thereof with matching or mating grooves formed in the elastomeric cartridge whereby the head and the cartridge body are locked together.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
  • Powder Metallurgy (AREA)
EP89903385A 1988-02-09 1989-02-07 Composite cartridge for high velocity rifles and the like Expired - Lifetime EP0358750B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15405888A 1988-02-09 1988-02-09
US154058 1988-02-09
PCT/US1989/000489 WO1989007496A1 (en) 1988-02-09 1989-02-07 Composite cartridge for high velocity rifles and the like

Publications (3)

Publication Number Publication Date
EP0358750A1 EP0358750A1 (en) 1990-03-21
EP0358750A4 EP0358750A4 (en) 1992-10-21
EP0358750B1 true EP0358750B1 (en) 1999-01-07

Family

ID=22549824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89903385A Expired - Lifetime EP0358750B1 (en) 1988-02-09 1989-02-07 Composite cartridge for high velocity rifles and the like

Country Status (10)

Country Link
EP (1) EP0358750B1 (xx)
AR (1) AR244428A1 (xx)
AT (1) ATE175495T1 (xx)
AU (1) AU642381B2 (xx)
CA (1) CA1337962C (xx)
DE (1) DE68928894T2 (xx)
IL (1) IL89212A (xx)
MX (1) MX171078B (xx)
WO (1) WO1989007496A1 (xx)
ZA (1) ZA89892B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12066279B2 (en) 2022-05-06 2024-08-20 Innovative Performance Applications, Llc Polymer ammunition casing

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US6752084B1 (en) * 1999-01-15 2004-06-22 Amtech, Inc. Ammunition articles with plastic components and method of making ammunition articles with plastic components
US7059234B2 (en) * 2003-05-29 2006-06-13 Natec, Inc. Ammunition articles and method of making ammunition articles
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
US8240252B2 (en) 2005-03-07 2012-08-14 Nikica Maljkovic Ammunition casing
US9188412B2 (en) 2011-07-28 2015-11-17 Mac, Llc Polymeric ammunition casing geometry
US9182204B2 (en) 2011-07-28 2015-11-10 Mac, Llc Subsonic ammunition casing
US9921017B1 (en) 2013-03-15 2018-03-20 Victor B. Kley User identification for weapons and site sensing fire control
PL3094944T3 (pl) 2014-01-13 2019-10-31 Mac Llc Łuska amunicji polimerowej
WO2015154079A1 (en) 2014-04-04 2015-10-08 Mac, Llc Method for producing subsonic ammunition casing
US10107608B2 (en) * 2015-02-10 2018-10-23 Salvatore Tedde Cartridge for light weapons
US10866072B2 (en) * 2018-01-21 2020-12-15 Sig Sauer, Inc. Multi-piece cartridge casing and method of making
US11067370B2 (en) 2018-01-21 2021-07-20 Sig Sauer, Inc. Multi-piece cartridge casing and method of making
DE102020124559B4 (de) 2020-09-21 2024-05-02 Ruag Ammotec Ag Patronenhülse sowie Verfahren und Werkzeug zum Fügen von Bodenstück und Hülsenmantel einer mehrteiligen Patronenhülse
IT202000023866A1 (it) * 2020-10-12 2022-04-12 Salvatore Tedde Munizione per armi da fuoco leggere

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FR1113479A (fr) * 1954-11-03 1956-03-29 Union Ind Ct Sud Procédé de fabrication de douilles ou capacités cylindriques analogues
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US3745924A (en) * 1970-03-30 1973-07-17 Remington Arms Co Inc Plastic cartridge case
DE2303790C3 (de) * 1973-01-26 1981-08-20 Rheinmetall GmbH, 4000 Düsseldorf Treibladungshülse
DE2705235A1 (de) * 1977-02-08 1978-08-17 Dynamit Nobel Ag Leichte patrone
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JPS59185539A (ja) * 1983-04-06 1984-10-22 Jidosha Kiki Co Ltd 弁スリ−ブの製造方法
JPS61269938A (ja) * 1985-05-23 1986-11-29 Kuno Kinzoku Kogyo Kk ピストンの製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12066279B2 (en) 2022-05-06 2024-08-20 Innovative Performance Applications, Llc Polymer ammunition casing

Also Published As

Publication number Publication date
AU1819592A (en) 1992-08-20
AR244428A1 (es) 1993-10-29
ZA89892B (en) 1989-10-25
WO1989007496A1 (en) 1989-08-24
DE68928894D1 (de) 1999-02-18
IL89212A0 (en) 1989-09-10
EP0358750A4 (en) 1992-10-21
CA1337962C (en) 1996-01-23
AU642381B2 (en) 1993-10-14
ATE175495T1 (de) 1999-01-15
EP0358750A1 (en) 1990-03-21
MX171078B (es) 1993-09-29
IL89212A (en) 1996-10-31
DE68928894T2 (de) 1999-07-01

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