EP2896928B1 - Douille à base de polymère haute résistance pour une munition à blanc et subsonique - Google Patents

Douille à base de polymère haute résistance pour une munition à blanc et subsonique Download PDF

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Publication number
EP2896928B1
EP2896928B1 EP15156909.2A EP15156909A EP2896928B1 EP 2896928 B1 EP2896928 B1 EP 2896928B1 EP 15156909 A EP15156909 A EP 15156909A EP 2896928 B1 EP2896928 B1 EP 2896928B1
Authority
EP
European Patent Office
Prior art keywords
diameter
wall
cartridge
bullet
insert
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
EP15156909.2A
Other languages
German (de)
English (en)
Other versions
EP2896928A1 (fr
Inventor
Charles PADGETT
Sy Wiley
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.)
PCP Tactical LLC
Original Assignee
PCP Tactical LLC
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
Application filed by PCP Tactical LLC filed Critical PCP Tactical LLC
Priority to EP19192502.3A priority Critical patent/EP3587994B1/fr
Priority to EP18165338.7A priority patent/EP3361209B1/fr
Publication of EP2896928A1 publication Critical patent/EP2896928A1/fr
Application granted granted Critical
Publication of EP2896928B1 publication Critical patent/EP2896928B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F42B5/313—Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics formed by assembling several elements all elements made of plastics

Definitions

  • the primer mixture is an explosive lead styphnate blended with non-corrosive fuels and oxidizers which burns through a flash hole formed in the rear area of the cartridge case and ignites the propellant stored in the cartridge case.
  • the primer produces an initial pressure to support the burning propellant and seals the rear of the cartridge case to prevent high-pressure gases from escaping rearward. It should be noted that it is well known in the industry to manufacture primers in several different sizes and from different mixtures, each of which affects ignition differently.
  • the primary objective of the cartridge case is to hold the bullet, primer, and propellant therein until the gun is fired.
  • the cartridge case Upon firing of the gun, the cartridge case seals the chamber to prevent the hot gases from escaping the chamber in a rearward direction and harming the shooter.
  • the empty cartridge case is extracted manually or with the assistance of gas or recoil from the chamber once the gun is fired.
  • the present invention provides a cartridge case body strong enough to withstand gas pressures that equal or surpass the strength of brass cartridge cases under certain conditions, e.g. for both storage and handling.
  • the polymer used is lighter than brass.
  • a glass-filled high impact polymer can be used where the glass content is between 0%-50%, preferably between 5% and 50%. In another example the glass content can be 10%.
  • An example of a high impact polymer without the glass content is BASF's Capron® BU50I.
  • the insert 400 can be made of steel, and, in an example, heat treated carbon steel, 4140.
  • the 4140 steel is further heat treated to a Rockwell "C" scale (“RC") hardness of about 20 to about 50.
  • RC Rockwell "C" scale
  • any carbon steel with similar properties, other metals, metal alloys or metal/non-metal alloys can be used to form the insert. Heat treating a lower cost steel alloy to improve its strength is a point of distinction from the prior art, which have typically opted for more expensive alloys to deal with the strength and ductility needed for a cartridge casing application.
  • FIGs. 6-8 illustrate that the lower component 300 has a tapered portion 306 starting at the lower component first end 302 and ending at a collar 308.
  • the slope of the tapered portion 306 approximately matches the slope of the overlap portion 222 so the two can slide over each other to engage the upper 200 and lower 300 components.
  • the tapered portion 306 ends in a flat seat 307.
  • the seat 307 can have a thickness Ts which is about equal to the thickness of the wall and/or sleeve. This allows the bottom end 228 of the sleeve to sit on the seat 307 when the upper 200 and lower 300 components engage. This prevents the bottom end 228 of the sleeve 230 from being exposed. This could allow the gases to exert pressure on the bottom end 228 that can separate the upper 200 from the lower 300 component.
  • the lower component 300 in this further example is now much longer and comprises most of the propellant chamber 340.
  • the tapered portion is now replaced with an outer tapered portion 342.
  • the outer tapered portion 342 slides over the underskirt portion 240 so the two can be joined together as noted above.
  • the thickness of the underskirt portion 240 and the outer tapered portion 342 is approximate to the wall thickness or wall thickness and sleeve thickness.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Casings For Electric Apparatus (AREA)

Claims (8)

  1. Munition subsonique à base de polymère de résistance élevée, comprenant :
    un corps de cartouche, comportant une première extrémité (210) et une seconde extrémité opposée (304), moulée à partir d'un polymère, ledit corps de cartouche comprenant un composant (200) pourvu de ladite première extrémité (210) et pourvu de ladite seconde extrémité (304) ;
    caractérisée en ce que la munition comprend de plus :
    une embouchure (208) à une extrémité d'un col (206) qui forme une transition par rapport à un épaulement conique (204), l'ensemble étant disposé en correspondance de la première extrémité (210) ;
    ledit composant (200) enfermant un volume d'une chambre à propulseur (340) comprenant une première paroi interne ayant une première inclinaison et une seconde paroi interne ayant une seconde inclinaison ;
    un insert (400) raccordé à la seconde extrémité (304), ledit insert (400) comportant un évent (418) disposé en correspondance de la seconde extrémité (304) ;
    ladite seconde extrémité (304) comportant un trou (312) reliant l'évent (418) à la chambre à propulseur (340) ;
    la première inclinaison se prolongeant entre l'épaulement (204) et la seconde paroi interne ; la seconde inclinaison se prolongeant entre la première paroi interne et l'évent (418) ;
    la première inclinaison n'étant pas égale à la seconde inclinaison, les première et seconde inclinaisons réduisant un volume de la chambre à propulseur (340) contenant le propulseur propulsant la balle (50) à des vitesses subsoniques ; et une balle (50), ayant un poids standard, se mettant en prise de façon amovible avec l'embouchure (208).
  2. Douille de munition subsonique à base de polymère de résistance élevée selon la revendication 1, dans laquelle l'embouchure (208) comprend également : une extension (242) se mettant en prise à l'embouchure (208) ; et une amorce (244) se mettant en prise avec une extrémité de l'extension opposée à l'embouchure (208), dans laquelle l'amorce (244) se déforme élastiquement lorsque la cartouche est tirée.
  3. Douille de munition subsonique à base de polymère de résistance élevée selon la revendication 1, comprenant de plus un adhésif disposé entre la balle (50) et l'embouchure (208).
  4. Douille de munition subsonique à base de polymère de résistance élevée selon la revendication 3, comprenant de plus : un premier diamètre de la première paroi interne ; et un second diamètre de la seconde paroi interne, dans laquelle le premier diamètre est supérieur au second diamètre.
  5. Douille de cartouche à base de polymère de résistance élevée selon la revendication 3, comprenant de plus : un premier diamètre de la première paroi interne ; et un second diamètre de la seconde paroi interne, dans laquelle le premier diamètre est inférieur au second diamètre.
  6. Procédé de fabrication d'une douille de cartouche à base de polymère de résistance élevée pour une munition subsonique selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend les étapes de :
    mouler un corps de cartouche, à partir d'un polymère, comportant une première extrémité (210) et une seconde extrémité opposée (212) ;
    disposer de façon amovible une balle au poids conventionnel (50), pour un calibre de la balle, dans la première extrémité (210) ;
    former un insert (400) se mettant en prise avec la seconde extrémité (212) ;
    mouler une partie d'épaulement (204) à proximité de la première extrémité (210) ;
    prolonger une première paroi interne, ayant un premier diamètre, dans le corps de cartouche ;
    prolonger une seconde paroi interne à partir de la première paroi interne à proximité de l'insert,
    mouler un second diamètre de la seconde paroi interne différent du premier diamètre ;
    mouler une inclinaison linéaire disposée entre le premier diamètre et le second diamètre ;
    former une chambre à propulseur (340) à partir des première et seconde parois internes, l'inclinaison entre les premier et second diamètres réduisant un volume de la chambre à propulseur (340) contenant le propulseur propulsant la balle (50) à des vitesses subsoniques.
  7. Procédé selon la revendication 6, dans lequel le moulage du second diamètre comprend l'étape consistant à mouler le premier diamètre supérieur au second diamètre.
  8. Procédé selon la revendication 6, dans lequel le moulage du second diamètre comprend l'étape consistant à mouler le premier diamètre inférieur au second diamètre.
EP15156909.2A 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique Active EP2896928B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19192502.3A EP3587994B1 (fr) 2011-01-14 2012-01-13 Boîtier de cartouche à base de polymère à haute résistance pour ébauche et munition subsonique
EP18165338.7A EP3361209B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161433170P 2011-01-14 2011-01-14
EP12702665.6A EP2663831B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP12702665.6A Division EP2663831B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP18165338.7A Division EP3361209B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique
EP19192502.3A Division EP3587994B1 (fr) 2011-01-14 2012-01-13 Boîtier de cartouche à base de polymère à haute résistance pour ébauche et munition subsonique

Publications (2)

Publication Number Publication Date
EP2896928A1 EP2896928A1 (fr) 2015-07-22
EP2896928B1 true EP2896928B1 (fr) 2018-04-25

Family

ID=45563546

Family Applications (5)

Application Number Title Priority Date Filing Date
EP19192502.3A Active EP3587994B1 (fr) 2011-01-14 2012-01-13 Boîtier de cartouche à base de polymère à haute résistance pour ébauche et munition subsonique
EP12702665.6A Active EP2663831B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique
EP14161688.8A Active EP2749838B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique
EP18165338.7A Active EP3361209B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique
EP15156909.2A Active EP2896928B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique

Family Applications Before (4)

Application Number Title Priority Date Filing Date
EP19192502.3A Active EP3587994B1 (fr) 2011-01-14 2012-01-13 Boîtier de cartouche à base de polymère à haute résistance pour ébauche et munition subsonique
EP12702665.6A Active EP2663831B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique
EP14161688.8A Active EP2749838B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique
EP18165338.7A Active EP3361209B1 (fr) 2011-01-14 2012-01-13 Douille à base de polymère haute résistance pour une munition à blanc et subsonique

Country Status (4)

Country Link
US (1) US20120180687A1 (fr)
EP (5) EP3587994B1 (fr)
IL (6) IL285464B1 (fr)
WO (1) WO2012097320A1 (fr)

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EP3361209B1 (fr) 2019-09-11
EP3361209A1 (fr) 2018-08-15
US20120180687A1 (en) 2012-07-19
EP2749838A1 (fr) 2014-07-02
EP3587994A1 (fr) 2020-01-01
IL227436A (en) 2016-11-30
IL285464B1 (en) 2024-03-01
IL273811A (en) 2020-05-31
EP2663831B1 (fr) 2015-03-04
EP3587994B1 (fr) 2022-04-20
EP2663831A1 (fr) 2013-11-20
IL248485A0 (en) 2016-12-29
EP2749838B1 (fr) 2015-06-17
IL227436A0 (en) 2013-09-30
WO2012097320A1 (fr) 2012-07-19
IL285464A (en) 2021-09-30
IL248485B (en) 2020-04-30
IL310594A (en) 2024-04-01
EP2896928A1 (fr) 2015-07-22
IL278327B (en) 2021-08-31

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