WO2008039083A2 - Munition - Google Patents

Munition Download PDF

Info

Publication number
WO2008039083A2
WO2008039083A2 PCT/NZ2007/000278 NZ2007000278W WO2008039083A2 WO 2008039083 A2 WO2008039083 A2 WO 2008039083A2 NZ 2007000278 W NZ2007000278 W NZ 2007000278W WO 2008039083 A2 WO2008039083 A2 WO 2008039083A2
Authority
WO
WIPO (PCT)
Prior art keywords
case
round
projectile
chamber
round according
Prior art date
Application number
PCT/NZ2007/000278
Other languages
English (en)
Other versions
WO2008039083A3 (fr
Inventor
William James Sharplin
Original Assignee
William James Sharplin
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 William James Sharplin filed Critical William James Sharplin
Publication of WO2008039083A2 publication Critical patent/WO2008039083A2/fr
Publication of WO2008039083A3 publication Critical patent/WO2008039083A3/fr

Links

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
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/02—Bullets
    • 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
    • F42B5/067—Mounting or locking missiles in cartridge cases

Definitions

  • This invention relates to a round of ammunition.
  • a round of ammunition having a case loaded with a charge, a projectile engaged with the case, a chamber between the case and the projectile, and a resilient ring providing a tight sealed fit between the case and the projectile, the round formed such that when it is fired combustion gases are formed in the case and travel into the chamber to cause the sealed fit to break and the projectile to propel from the case.
  • the resilient ring is located within a groove in the periphery of the projectile.
  • the resilient ring comprises an O-ring.
  • the case comprises an insert which contains the charge.
  • the insert is replaceable such that the case, less the insert, is reusable.
  • the chamber is an effective low pressure chamber relative to the case.
  • the leaf is metallic.
  • the projectile is substantially formed from a suitable polymer.
  • the resilient ring is formed from a suitable synthetic polymer.
  • Figure 1 is a side cross section exploded view of a round of ammunition
  • Figure 2 is a side cross section view showing the round when assembled
  • Figure 3 is an isometric view of the round when assembled.
  • the round of ammunition comprises a metallic case 1 and a projectile 2.
  • the round of ammunition is a 40 mm round.
  • the case 1 incorporates an insert 3 containing explosive material 4 sufficient to enable the round to be fired from a rifle or some other suitable firearm.
  • the insert 3 is replaceable after the round has been fired so that the case 1 (less its original insert) may be re-used.
  • the projectile 2 engages the case 1 in a tight sealed fit by way of a resilient CD- ring 5.
  • the O-ring 5 thus provides sufficient friction to hold the case 1 and projectile 2 together, ready for firing, as a low pressure low velocity round of ammunition. It is thus not necessary for the case 1 and the sabot 2 to be crimped, screw fitted or glued to one another.
  • the O-ring 5 when the round is assembled the O-ring 5 is seated within a groove 6 in the periphery of the projectile 2.
  • the O-ring 5 is formed from a suitable synthetic polymer.
  • the projectile 2 when the projectile 2 is within the case 1 there is a space 7 between the two.
  • the space 7 serves as a low pressure chamber.
  • the explosive material in the insert 3 explodes such that the insert becomes a high pressure chamber.
  • gas pressure within the insert 3 reaches a certain level the gases blow through a metallic leaf 3a or the like, as is known in the art, and enter the space or low pressure chamber 7.
  • the use of the low pressure chamber 7 between the case 1 and the projectile 2 reduces stress on the round as it is fired.
  • gas pressure within the low pressure chamber 7 reaches a certain level the O-ring seal between the case 1 and the projectile 2 breaks and the projectile launches from the case towards its target.
  • the O-ring 5 gives the round sufficient effective backpressure to enable it to be used for targets up to 400 metres away.
  • the projectile 2 is formed from a suitable synthetic polymer so that the round can be used in a training context rather than as actual combat ammunition.
  • Preferred forms of the round enable cost savings as the case 1 can be re-used, for example by fitting it with a new insert 3 and projectile 2 after it has been fired.
  • the use of an O-ring 5 means that a new projectile can be fitted without the need for heavy duty machinery.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

Cartouche de munition comprenant une douille (1) remplie d'une charge, un projectile (2) en prise avec la douille, une chambre (7) entre la douille (1) et le projectile (2), et une bague résiliente (5) qui procure un joint hermétique serré entre la douille (1) et le projectile (2); la cartouche étant formée de telle sorte que, quand elle est tirée, des gaz de combustion se forment dans la douille (1) et circulent à l'intérieur de la chambre (7) de façon à provoquer la rupture du joint hermétique serré et la projection du projectile hors de la douille.
PCT/NZ2007/000278 2006-09-29 2007-09-21 Munition WO2008039083A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ55023606 2006-09-29
NZ550236 2006-09-29

Publications (2)

Publication Number Publication Date
WO2008039083A2 true WO2008039083A2 (fr) 2008-04-03
WO2008039083A3 WO2008039083A3 (fr) 2008-08-07

Family

ID=39230702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2007/000278 WO2008039083A2 (fr) 2006-09-29 2007-09-21 Munition

Country Status (2)

Country Link
AU (1) AU2007216864A1 (fr)
WO (1) WO2008039083A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620737A1 (fr) * 2012-01-26 2013-07-31 Nexter Munitions Munition non létale
EP2643652A4 (fr) * 2010-11-25 2017-03-08 Advanced Material Engineering Pte Ltd Projectile en cartouche

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892038A (en) * 1985-03-05 1990-01-09 Nico-Pyrotechnik Hanns-Jurgen Diederichs Gmbh & Co. Kg Cartridged ammunition
US4938146A (en) * 1988-09-22 1990-07-03 Rheinmetall Gmbh Grenade-type projectile
US20060081148A1 (en) * 2000-01-06 2006-04-20 Beal Harold F Round of rifle ammuniton and method for making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62148896U (fr) * 1986-03-06 1987-09-19

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892038A (en) * 1985-03-05 1990-01-09 Nico-Pyrotechnik Hanns-Jurgen Diederichs Gmbh & Co. Kg Cartridged ammunition
US4938146A (en) * 1988-09-22 1990-07-03 Rheinmetall Gmbh Grenade-type projectile
US20060081148A1 (en) * 2000-01-06 2006-04-20 Beal Harold F Round of rifle ammuniton and method for making same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2643652A4 (fr) * 2010-11-25 2017-03-08 Advanced Material Engineering Pte Ltd Projectile en cartouche
EP2643652B1 (fr) 2010-11-25 2018-05-02 Advanced Material Engineering Pte Ltd Projectile en cartouche
EP2620737A1 (fr) * 2012-01-26 2013-07-31 Nexter Munitions Munition non létale
FR2986318A1 (fr) * 2012-01-26 2013-08-02 Nexter Munitions Munition non letale

Also Published As

Publication number Publication date
WO2008039083A3 (fr) 2008-08-07
AU2007216864A1 (en) 2008-04-17

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