EP1962048B1 - Verbesserte Schwachenergiepatrone und Herstellungsverfahren dafür - Google Patents

Verbesserte Schwachenergiepatrone und Herstellungsverfahren dafür Download PDF

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Publication number
EP1962048B1
EP1962048B1 EP08002544.8A EP08002544A EP1962048B1 EP 1962048 B1 EP1962048 B1 EP 1962048B1 EP 08002544 A EP08002544 A EP 08002544A EP 1962048 B1 EP1962048 B1 EP 1962048B1
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EP
European Patent Office
Prior art keywords
piston
cartridge body
cavity
cartridge
primer
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.)
Active
Application number
EP08002544.8A
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English (en)
French (fr)
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EP1962048A2 (de
EP1962048A3 (de
Inventor
Rochelle Diane Poore
Drew Lee Goodlin
Lawrence Peter Head
Richard Dean Hunt
Joel Lee Sandstrom
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Northrop Grumman Innovation Systems LLC
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Alliant Techsystems Inc
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Publication date
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Publication of EP1962048A2 publication Critical patent/EP1962048A2/de
Publication of EP1962048A3 publication Critical patent/EP1962048A3/de
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Publication of EP1962048B1 publication Critical patent/EP1962048B1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/02—Cartridges
    • 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
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/045—Cartridges, i.e. cases with charge and missile of telescopic type

Definitions

  • the invention relates to cartridges for firearms that are designed for, or are temporarily or permanently modified to be used in, reality-based training exercises.
  • the invention relates to a two-piece reduced energy cartridge.
  • One design used to solve the cycling problem in training cartridges is that of telescopically interfitted two-piece cartridges. After the explosive material is ignited in such a two-piece cartridge, the low-mass projectile, located in a first part of the cartridge, is expelled from the firearm by a portion of the gas created upon ignition. The remaining gas created during ignition of the explosive material is used to drive a second part of the cartridge rearwardly to cycle the firearm.
  • One objective in designing such a training cartridge is the minimization of cost.
  • Another objective is minimization of explosive material in the cartridge. The quantity of explosive material must be sufficient to cycle the firearm, but also low enough to prevent the projectile from leaving the firearm at an unsafe velocity.
  • WO9114916 forms the starting point for independent claims 1 and 10 and discloses a cartridge comprising a cartridge case having a primer at its base and a sabot or piston at its mouth.
  • the piston can be provided with longitudinal orifices, diagonal orifices, grooves or any combination of orifices and grooves.
  • the projectile is inserted into a cylindrical recess in the front portion of the sabot.
  • the orifices are in communication with this recess to permit propellant gas to bleed through and accelerate the projectile upon ignition.
  • the case and the sabot can be provided respectively with a crimp and a stepped portion in order to limit travel of the sabot out of the case.
  • At least one embodiment of the present invention is directed toward a method of manufacturing a cartridge for use in a firearm.
  • the method comprises providing a cartridge body wherein a first portion of the cartridge body defines a forward cavity and a second portion of the cartridge body defines a rearward cavity. An aperture interconnects the forward and rearward cavities.
  • the cartridge body is configured to be disposed about at least a portion of a piston.
  • the method further comprises providing a piston wherein the piston has a top end and a bottom end. A portion of the bottom end defines a primer retaining cavity.
  • a portion of the piston defines a gas passageway extending from the primer retaining cavity to the top end of the piston.
  • the method further comprises inserting a primer into the primer retaining cavity of the piston and securing the primer in the primer retaining cavity.
  • the method further comprises placing a seal member around the piston, inserting the piston and seal member combination into the rearward cavity of the cartridge body, and crimping at least a portion of the second portion of the cartridge body to
  • At least one embodiment of the present invention is directed towards a cartridge for firearms.
  • the cartridge includes a piston, a cartridge body, a primer, and a seal member.
  • the piston has a top end and a bottom end. A portion of the bottom end of the piston defines a primer retaining cavity. And, a portion of the piston defines a gas passageway which extends from the primer retaining cavity to the top end of the piston.
  • a first portion of the cartridge body defines a forward cavity and a second portion of the cartridge body defines a rearward cavity.
  • An aperture interconnects the forward and rearward cavities.
  • the cartridge body is configured to be disposed about at least a portion of the piston. At least a portion of the second portion of the cartridge body is crimped about the piston.
  • a seal member is arranged around the piston, forming a seal between the piston and an inner surface of the rearward cavity of the cartridge body.
  • the piston has two positions: an unfired position and a fired position. In the unfired position the top end of the piston is adjacent the aperture. In the fired position the piston has sealingly slid rearward in the rearward cavity.
  • a primer is arranged in the primer retaining cavity of the piston whereby upon firing, the gas created by the primer flows through the gas passageway. A portion of the gas flows through the aperture, and a portion of the gas fills the rearward cavity between the seal and the aperture, which causes the piston to sealingly slide rearward.
  • FIG. 1 is an exploded view of an embodiment of the present invention depicting the components of a cartridge.
  • FIG. 2 is cross-sectional view of an embodiment of the present invention depicting a cartridge in an unfired position.
  • FIG. 3 is a cross-sectional view of an embodiment of the present invention depicting a cartridge in a fired position.
  • FIG. 4 is a perspective cross-sectional view of an embodiment of the present invention depicting a cartridge body with a vent hole.
  • FIG. 5 is a perspective cross-sectional view of an embodiment of the present invention depicting a cartridge with a rupture disc.
  • FIG. 6 is a perspective cross-sectional view of an embodiment of the present invention depicting a cartridge with a rupture disc.
  • FIG. 7 which does not form part of the invention, is a perspective cross-sectional view of an embodiment depicting a cartridge with a seal member integral to the piston.
  • FIG. 8 is a flowchart of an embodiment of the present invention depicting a method of making a cartridge.
  • Embodiments of the present invention make use of telescopically interfitted two-part cartridges.
  • the components are designed such that they can be easily produced and assembled at a lower cost than other designs.
  • At least one embodiment of the present invention is directed toward a firearm cartridge.
  • Examples of the components to be assembled into a cartridge 10 are depicted in FIG. 1 .
  • the telescopically interfitted cartridge 10 of FIG. 1 is comprised of a cartridge body 20, a piston 25, a seal member 30, and a primer 35.
  • the cartridge body 20 has five primary design features: a forward cavity 40 that retains a projectile; a rearward cavity 45 (as best seen in FIG. 3 ) into which the piston 25 is inserted; a divider 50 which separates the forward and rearward cavities; an aperture 55 within the divider 50 interconnecting the forward and rearward cavities, the aperture 55 acting to limit the gas flow to a projectile thereby limiting the projectile's velocity; and a top chamfer 60 which aids in feeding cartridges into the magazine and the firearm. It should be noted that the top chamfer 60 is not required in all embodiments of the invention.
  • the cartridge 10 also comprises a piston 25 wherein the piston has a top end 65 and a bottom end 70.
  • a portion of the bottom end 70 defines a primer retaining cavity 75 for retaining the primer, as best seen in FIGS. 2 and 3 .
  • a portion of the piston defines a gas passageway 80 extending from the primer retaining cavity 75 to the top end 65 of the piston.
  • the cartridge body 20 is configured to be disposed about at least a portion of the piston 25, thus forming a telescopically interfitted two-part cartridge 10.
  • the inner diameter 85 of the cartridge body 20 and the outer diameter 90 of the piston 25 are configured to allow the piston body 25 to be inserted into the cartridge body 20.
  • FIG. 2 which depicts the cartridge 10 in an unfired state
  • the top end 65 of the piston is adjacent the divider 50.
  • the piston 25 is almost completely contained within the rearward cavity 45 of the cartridge body 20.
  • a portion 92 of the cartridge body is crimped to the piston 25.
  • FIG. 3 which depicts the cartridge 10 in a fired state
  • crimped portion 92 impacts protrusion 93 after firing. Because the inner diameter of the crimped portion 92 is less than the outer diameter of the protrusion 93, the piston and cartridge body do not physically separate after firing. Instead, after firing the piston slides rearwardly, remaining slidingly engaged to the cartridge body in a telescopic manner.
  • the seal member 30 provides a seal between the piston 25 and cartridge body 20 so that the entire travel of the piston, from an unfired position to a fired position, is sealed. Gases created upon firing escape only through the aperture 55. More specifically, upon initiation of the primer, gas travels through the gas passageway 80 and reaches the divider 50. The gas fills the portion of the rearward cavity between the cartridge body 20, the piston 25, and the seal member 30. The seal member 30 prevents the gas from escaping rearwardly.
  • the term "primer” as used herein includes any detonating gas generator.
  • the present invention utilizes a gas generating primer that relies on heat to increase internal pressure: Gas is generated then heated. This creates an expansion of less gas to more volume than cooler systems. Information related to such a gas generating primer can be found in the pending U.S. Patent Application entitled “NON-TOXIC PERCUSSION PRIMERS AND METHODS OF PREPARING THE SAME", Attorney Docket No. A39.2B-13252-US01.
  • the cartridge body 20 further includes a vent hole 96, as depicted in FIG. 4 , in order to allow gases to escape and further reduce the energy available to the projectile.
  • the vent hole 96 is desirably placed forward the top end 65 of the piston when the piston is in the fired position.
  • the size of the vent hole will vary, depending on the primer/propellant system used. However, in some embodiments the size of the vent hole is approximately 1.27 mm (0.050 inches).
  • At least one embodiment of the present invention employs the use of a rupture disc 98 to regulate internal pressures, as shown in FIGs. 5 and 6 .
  • the rupture disc 98 is placed within the rearward cavity 45 and adjacent the aperture 55.
  • Figure 6 depicts another embodiment of a rupture disc 98, with the disc 98 placed within the gas passageway 80.
  • the rupture disc 98 has a thickness of approximately 0.25 mm (0.010 inches).
  • the seal member 30 is an O-ring, as depicted in FIGs. 1 - 3 .
  • the seal member 30 is an O-ring, as depicted in FIGs. 1 - 3 .
  • one skilled in the art will recognize that a number of other seal members may be used to accomplish the sealing effect created by the O-ring.
  • the seal member is integral to the piston 25, as shown in FIG. 7 .
  • the design of the piston 25 has eliminated the need for a separate seal member.
  • a propellant 94 is further included in the piston 25, as shown in FIG. 2 .
  • a propellant 94 is placed within the gas passageway 80 of the piston.
  • the cartridge 10 is also manufactured with a projectile 95.
  • the projectile 95 is comprised of a cup 100, a marking material 105, and a cap 110, as depicted in FIG. 1 .
  • the projectile 95 is inserted into the forward cavity 40 of the cartridge body 20. After firing, as gas escapes from the rearward cavity 45 to the forward cavity 40 through the aperture 55, the projectile 95 is forced from the forward cavity and out the barrel of the firearm.
  • the projectile 95 is comprised of a rubber bullet, a blank, or oleoresin capsicum spray.
  • a rubber bullet a blank
  • oleoresin capsicum spray a projectile that can be substituted for any of the above examples.
  • At least one embodiment of the present invention is directed toward a method of manufacturing the cartridge described above, as depicted in the flowchart in FIG. 8 .
  • the method comprises the step 200 of providing a cartridge body 20 and a piston 25, as described above.
  • the method further comprises the step 210 of priming the piston 25. This step involves inserting a primer 35 into the primer retaining cavity 75 of the piston.
  • the method further comprises the step 215 of securing the primer in the primer retaining cavity 75.
  • securing the primer to the piston involves staking the piston.
  • One method of staking the piston may entail using a machine to push inwardly portions of the piston material surrounding the primer. Once sufficient material has been pushed inwardly, the primer will be securingly retained within the primer retaining cavity.
  • the method further comprises the step 225 of placing a seal member 30 around the piston.
  • the method further comprises the step 230 of inserting the piston and seal member combination into the rearward cavity 45 of the cartridge body 20.
  • the inner diameter 85 of the cartridge body 20 and the outer diameter 90 of the piston 25 are configured to allow the piston 25 to be inserted into the cartridge body 20.
  • the method further comprises the step 235 of crimping at least a portion 92 of the cartridge body 20 to the piston 25.
  • the crimped portion 92 is located as close to the bottom end 70 of the piston as possible, thus allowing the greatest amount of travel.
  • the step 235 of crimping is performed by two partially annular jaws.
  • the cartridge is placed within jaws and as they are brought together by a predetermined force, through a predetermined distance, or some other measurement used by those skilled in the art, a portion of the cartridge body is compressed onto the piston.
  • the step 235 of crimping comprises crimping the bottom portion of the cartridge body so that the inner diameter 85 of the rearward cavity in the crimped portion is less than the inner diameter 85 of the rest of the rearward cavity 45, as seen in FIG. 2 .
  • cartridge bodies before crimping have an outer diameter of approximately 9.11 mm (0.359 inches) and after crimping have an outer diameter of approximately 8.89 mm (0.350 inches). These dimensions will vary with other embodiments because the size of the firearm may dictate larger or small cartridges, however this ratio as proved to be sufficient to secure the cartridge body and the piston.
  • the method further includes the step 240 of inserting a projectile 95.
  • the step of inserting a projectile may comprise inserting a cup 100 into the forward cavity 40 of the cartridge body.
  • a marking material 105 such as ink or some other agent for marking known by those skilled in the art, is distributed into the cup 100.
  • amounts may vary depending on the size of the cartridge and the amount of marking material desired, an amount of material in some embodiments is 97.19 mg (1.5 grains).
  • a cap 110 is then inserted into the cup 100 and marking material combination.
  • the step 240 of inserting the projectile 95 can be performed at various stages of manufacture.
  • the step of inserting the projectile is performed prior to the step 230 of inserting the piston and seal member combination into the cartridge body.
  • the vent 125 may prevent the projectile from becoming dislodged from the forward cavity 40 during the step of piston insertion into the cartridge body.
  • the method also comprises the step 250 of inspecting the piston for damage.
  • the inspection step 250 is performed immediately after the step 215 of securing the primer in the primer retaining cavity. The inspection step 250 ensures that the primer has not been damaged during securement. Additionally, the inspection step 250 ensures that the primer has been fully secured to the piston.
  • a first machine performs the steps of primer insertion, primer securement, and piston inspection.
  • a second machine performs the steps of placing the seal member, inserting the piston and seal member combination into the cartridge body, and crimping the cartridge body.
  • the primer and piston combination may be placed into a feeder bowl of the second machine.
  • the second machine may stretch a seal member, drawn from another feeder bowl, and place it over a piston.
  • the second machine may draw a cartridge body from a feeder bowl, draw a cup from another feeder bowl, and insert the cup into the forward cavity of the previously drawn cartridge body.
  • a marking material is then distributed into the cup by the second machine, and a cap is drawn from a feeder bowl and inserted into the cup and marking material combination.
  • the second machine then inverts the cartridge and projectile combination. At this point, the second machine may then insert the piston into the cartridge body and the second machine crimps the cartridge body to the piston, after which the cartridge is placed in a tray as a finished unit.
  • the components, in particular the cartridge body and the piston, are designed such that they can be easily produced and assembled.
  • At least one embodiment of the present invention eliminates complicated piston and cartridge body alignment requirements.
  • at least one embodiment of the present invention uses less primer than that required by other designs, thereby reducing or eliminating damage to the gun's bolt face while still having enough energy to cycle the firearm.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Coating Apparatus (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (22)

  1. Eine Patrone (10), umfassend:
    einen Kolben (25), wobei der Kolben (25) ein oberes Ende (65) und ein unteres Ende (70) aufweist, wobei ein Abschnitt des unteren Endes (70) einen Primer enthaltenden Hohlraum definiert,
    und ein Abschnitt des Kolbens (25) einen Gasdurchgang definiert, der sich von dem Primer enthaltenden Hohlraum zu dem oberen Ende (65) des Kolbens (25) erstreckt;
    einen Patronenkörper (20), wobei ein erster Abschnitt des Patronenkörpers (20) einen nach vorn gerichteten Hohlraum (40) definiert, und ein zweiter Abschnitt des Patronenkörpers (20) einen nach hinten gerichteten Hohlraum definiert, wobei die nach vorn und nach hinten gerichteten Hohlräume durch eine Öffnung (55) miteinander verbunden sind, wobei der Patronenkörper (20) gestaltet ist, um zumindest um einen Abschnitt des Kolbens (25) herum eingerichtet zu sein;
    einen Primer, der in dem Primer enthaltenden Hohlraum angeordnet ist;
    ein Dichtungsbauteil (30), welches um den Kolben (25) angeordnet ist, und zwischen dem oberen Ende (65) und einem Vorsprung (93) des Kolbens (25) getragen wird, und eine Dichtung zwischen dem Kolben (25) und einer inneren Oberfläche des nach hinten gerichteten Hohlraums des Patronenkörpers (20) bildet;
    wobei der Kolben (20) zwei Positionen aufweist, eine ungefeuerte Position, in der das obere Ende (65) des Kolbens (25) neben der Öffnung (55) liegt, und eine gefeuerte Position, in der der Kolben (25) in abdichtender Weise nach hinten in den nach hinten gerichteten Hohlraum geglitten ist; wobei zumindest ein Abschnitt (92) des zweiten Abschnitts des Patronenkörpers (20) um den Kolben (25) geklemmt ist, und
    wobei beim Abfeuern das durch den Primer erzeugte Gas durch den Gasdurchgang verläuft, und ein Teil des Gases durch die Öffnung (55) fließt, und ein Teil des Gases den nach hinten gerichteten Hohlraum zwischen der Dichtung und der Öffnung (55) ausfüllt, was dazu führt, dass der Kolben (25) in dichtender Weise nach hinten gleitet, bis ein geklemmter Abschnitt (92) den Vorsprung (93) trifft, und
    wobei der Patronenkörper (20) weiterhin zumindest eine Bruchscheibe (98) umfasst.
  2. Patrone (10) nach Anspruch 1, weiterhin ein Treibgas umfassend.
  3. Patrone (10) nach Anspruch 2, bei welcher das Treibgas innerhalb des Gasdurchgangs verteilt ist.
  4. Patrone (10) nach Anspruch 1, weiterhin ein Projektil (95) umfassend.
  5. Patrone (10) nach Anspruch 4, bei welcher das Projektil ein Markierungsmaterial umfasst.
  6. Patrone (10) nach Anspruch 4, bei welcher das Projektil aus der Gruppe ausgewählt ist, die aus einer Gummikugel, einer Blindfeuerung und einem Pfefferextraktspray besteht.
  7. Patrone (10) nach Anspruch 1, bei welcher der geklemmte Abschnitt des Patronenkörpers (20) so geklemmt ist, dass der innere Durchmesser des nach hinten gerichteten Hohlraums im geklemmten Abschnitt kleiner als der innere Durchmesser des Restes des nach hinten gerichteten Hohlraums ist.
  8. Patrone (10) nach Anspruch 1, bei welcher der Patronenkörper (20) weiterhin eine Abschrägung (60) umfasst.
  9. Patrone (10) nach Anspruch 1, bei welcher der Patronenkörper (20) weiterhin mindestens ein Belüftungsloch (96) umfasst.
  10. Verfahren zum Herstellen einer Patrone (10) nach irgendeinem der Ansprüche 1 bis 9 zur Verwendung in einer Feuerwaffe, wobei das Verfahren umfasst:
    a) Bereitstellen eines Patronenkörpers (20) mit zumindest einer Bruchscheibe, wobei ein erster Abschnitt des Patronenkörpers (20) einen nach vorn gerichteten Hohlraum (40) definiert, und ein zweiter Abschnitt des Patronenkörpers (20) einen nach hinten gerichteten Hohlraum definiert, wobei die nach vorn und nach hinten gerichteten Hohlräume durch eine Öffnung (55) miteinander verbunden sind, wobei der Patronenkörper (20) gestaltet ist, um zumindest um einen Abschnitt eines Kolbens (25) herum eingerichtet zu sein;
    b) Bereitstellen des Kolbens (25), wobei der Kolben (25) ein oberes Ende (65) und ein unteres Ende (70) aufweist, wobei ein Abschnitt des unteren Endes (70) einen Primer enthaltenden Hohlraum definiert, und ein Abschnitt des Kolbens (25) einen Gasdurchgang definiert, der sich von dem Primer enthaltenden Hohlraum zu dem oberen Ende (65) des Kolbens (25) erstreckt;
    c) Einfügen von Primer in den Primer enthaltenden Hohlraum des Kolbens (25);
    d) Sichern des Primers in dem Primer enthaltenden Hohlraum;
    e) Positionieren eines Dichtungsbauteils (30) um den Kolben (25) zwischen dem oberen Ende (65) und einem Vorsprung (93) des Kolbens (25);
    f) Einfügen einer Kombination aus dem Kolben (25) und dem Dichtungsbauteil (30) in den nach hinten gerichteten Hohlraum des Patronenkörpers (20); und
    g) Klemmen zumindest eines Abschnitts des zweiten Abschnitts des Patronenkörpers (20) an den Kolben (25).
  11. Verfahren nach Anspruch 10, weiterhin ein Einfügen eines Projektils in den nach vorn gerichteten Hohlraum des Patronenkörpers (20) umfassend.
  12. Verfahren nach Anspruch 11, bei welchem das Einfügen des Projektils umfasst:
    a) Einfügen eines Bechers in den nach vorn gerichteten Hohlraum (40);
    b) Verteilen eines Markierungsmaterials in dem Becher; und
    c) Einfügen eines Deckels in die Kombination aus dem Becher und dem Markierungsmaterial.
  13. Verfahren nach Anspruch 12, bei welchem das Einfügen des Projektils vor dem Einfügen der Kombination aus dem Kolben (25) und dem Dichtungsbauteil (30) in dem Patronenkörper (20) durchgeführt wird.
  14. Verfahren nach Anspruch 13, weiterhin ein Invertieren des Patronenkörpers (20) vor dem Einfügen der Kombination aus dem Kolben (25) und dem Dichtungsbauteil (30) in den Patronenkörper (20) umfassend.
  15. Verfahren nach Anspruch 10, bei welchem das Sichern des Primers in dem Primer enthaltenden Hohlraum ein Einsetzen des Kolbens (25) umfasst.
  16. Verfahren nach Anspruch 10, bei welchem das Klemmen durch zwei teilweise ringförmige Backen durchgeführt wird.
  17. Verfahren nach Anspruch 10, bei welchem das Klemmen das Klemmen des unteren Abschnitts des Patronenkörpers (20) so umfasst, dass der innere Durchmesser des nach hinten gerichteten Hohlraums in dem geklemmten Abschnitt kleiner als der innere Durchmesser des Rests des nach hinten gerichteten Hohlraums ist.
  18. Verfahren nach Anspruch 10, bei welchem c) und d) durch eine erste Maschine durchgeführt werden, und e) bis g) durch eine zweite Maschine durchgeführt werden.
  19. Verfahren nach Anspruch 10, weiterhin ein Inspizieren des Kolbens (25) nach Schäden umfassend.
  20. Verfahren nach Anspruch 19, bei welchem das Inspizieren des Kolbens (25) direkt nach dem Sichern des Primers in dem Primer enthaltenden Hohlraum durchgeführt wird.
  21. Verfahren nach Anspruch 20, bei welchem c) und d) und das Inspizieren des Kolbens (25) durch eine erste Maschine durchgeführt werden, und e) bis g) durch eine zweite Maschine durchgeführt werden.
  22. Verfahren nach Anspruch 10, weiterhin umfassend:
    Inspizieren des Kolbens (25) nach Schäden zwischen dem Schritt d) und dem Schritt e);
    Einfügen eines Projektils in den nach vorn gerichteten Hohlraum (40) des Patronenkörpers (20) zwischen dem Schritt e) und dem Schritt f).
EP08002544.8A 2007-02-22 2008-02-12 Verbesserte Schwachenergiepatrone und Herstellungsverfahren dafür Active EP1962048B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/677,638 US20100269724A1 (en) 2007-02-22 2007-02-22 Reduced Energy Cartridge and Method of Making Same

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EP1962048A2 EP1962048A2 (de) 2008-08-27
EP1962048A3 EP1962048A3 (de) 2010-02-24
EP1962048B1 true EP1962048B1 (de) 2013-12-11

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US9360223B1 (en) 2013-03-15 2016-06-07 Vista Outdoor Operations Llc High velocity ignition system for ammunition
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CA2621708C (en) 2013-04-16
CA2621708A1 (en) 2008-08-22
US20100269724A1 (en) 2010-10-28
EP1962048A2 (de) 2008-08-27
EP1962048A3 (de) 2010-02-24

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