EP1394498A2 - Balle à déformation contrôlée - Google Patents

Balle à déformation contrôlée Download PDF

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Publication number
EP1394498A2
EP1394498A2 EP03017049A EP03017049A EP1394498A2 EP 1394498 A2 EP1394498 A2 EP 1394498A2 EP 03017049 A EP03017049 A EP 03017049A EP 03017049 A EP03017049 A EP 03017049A EP 1394498 A2 EP1394498 A2 EP 1394498A2
Authority
EP
European Patent Office
Prior art keywords
housing
bullet
tip
chamber
sliding element
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.)
Withdrawn
Application number
EP03017049A
Other languages
German (de)
English (en)
Other versions
EP1394498A3 (fr
Inventor
Carlo Galluzzi
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.)
Fiocchi Munizioni SpA
Original Assignee
Fiocchi Munizioni SpA
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 Fiocchi Munizioni SpA filed Critical Fiocchi Munizioni SpA
Publication of EP1394498A2 publication Critical patent/EP1394498A2/fr
Publication of EP1394498A3 publication Critical patent/EP1394498A3/fr
Withdrawn legal-status Critical Current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
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/34—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect expanding before or on impact, i.e. of dumdum or mushroom type

Definitions

  • the present invention relates to a controlled-expansion bullet adapted to enable a reduced and controlled penetration into the target.
  • bullets such made as to open flowerwise upon an impact, so that they have a little penetration.
  • these bullets comprise an outer housing having a hollow tip in which a body (in the form of a small ball, for example) is received, which body upon the impact against a target is pushed backward urging the bullet tip to open.
  • an expansion bullet which comprises a hollow housing to internally define a chamber with an open tip and containing a slidable element in the chamber which is designed to slide backward in the chamber itself upon an impact against a target, the sliding element comprising a tip portion appearing at an opening on the housing tip and an axial rear shank that is received in a corresponding hole at the rear bottom of the housing to be slidably guided in said backward stroke, the housing being such made as to open flowerwise under the thrust of material from the target which enters the housing from the tip simultaneously with a back movement of said sliding element in the chamber.
  • Fig. 1 shown in Fig. 1 is an expansion bullet, generally identified with 10, comprising a hollow housing 11 (made of softer material, copper for example) with an open tip 12 and containing an element 13 (made of harder material, brass for example) in a chamber 15, which element is designed to slide backward upon the impact against a target.
  • the stroke of the sliding element is limited by the starting distance between a step 22 and the bottom of chamber 15 in the housing.
  • Element 13 has a head portion 14 the side surface of which slides within the axial chamber 15 formed in the hollow housing.
  • a rear shank 16 Projecting backward from the head side 14 is a rear shank 16 passing through the housing bottom at an axial hole 17 so as to project from said bottom and widen out in the form of a washer 19 of substantially the same diameter as that of the housing bottom.
  • This washer can be made of one piece construction or not with the end extremity of the shank. Consequently, head 14 can be made of one piece construction or not with shank 16 to enable easy mounting of the bullet.
  • the head 14 can be screw-mounted or riveted on the shank after insertion of the shank from the outside through the hole at the bottom and within chamber 15.
  • the washer can be screw-mounted or riveted on the rear end of the shank after insertion of the shank into the chamber to come out of the projectile bottom through hole 17.
  • element 13 can be made of one piece construction with the washer (which must not necessarily be of the shape herein shown) formed by riveting of the shank 16 end after mounting of the element in the seat 15 and through hole 17.
  • washer 19 is the bullet bottom supporting the impact in the shooting step and it can be made suitably hard, irrespective of the relative yielding feature that, on the contrary, must be supplied to housing 11 to enable opening of same.
  • the washer can also have a smaller diameter than the bullet diameter and be embedded in a suitable seat 18 at the washer bottom.
  • Housing 11 is made so as to open flowerwise under the thrust of material from the target entering the housing tip simultaneously with a backward movement of the sliding element 13.
  • the housing in the tip region is provided with means facilitating separation of its side wall into petals.
  • said facilitating means comprises relieves 21 distributed at intervals on the periphery of the inner wall of the chamber for receiving the sliding element and directed backward from the housing tip.
  • the resisting means comprises an annular friction element 20 coaxially disposed between the sliding element and the housing.
  • This element can be a suitably sized Seeger ring or an O-ring.
  • Fig. 2 Diagrammatically shown in Fig. 2 is bullet 10 after the impact against the target, with the sliding element 13 withdrawn within the housing and the housing completely “flowerwise" open.
  • Opening is caused by the soft material of the target that, exerting pressure on the head of the sliding element, causes a backward movement of the latter and penetrates into the cavity becoming gradually clear, so that it gets wedged and forces expansion of the petal extremities.
  • the effect can be easily calibrated during manufacture of the bullet by suitably selecting the length and number of the relieves 21 to weaken areas of the housing wall to a more or less important degree, as well as selecting the stroke of element 13 in the chamber to adjust the amount of the target material entering the housing cavity.
  • the bullet in accordance with the invention supplies excellent performance and a satisfactory amount of penetration. Shot tests in ballistic gelatine have shown suitably low penetration values. In addition, by modifying the above mentioned parameters the desired expansion and perforation values can be reached with ease.
  • the bullet in the housing of a high-density target the bullet reduces its expansion, accordingly increasing its penetration capacity.
  • the inner element is also used as a perforating element.
  • the element shape can be modified and at the maximum point of its back movement, the element becomes integral with the outer portion practically forming a solid metal block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP03017049A 2002-08-30 2003-07-28 Balle à déformation contrôlée Withdrawn EP1394498A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20021869 ITMI20021869A1 (it) 2002-08-30 2002-08-30 Pallottola ad espansione controllata.
ITMI20021869 2002-08-30

Publications (2)

Publication Number Publication Date
EP1394498A2 true EP1394498A2 (fr) 2004-03-03
EP1394498A3 EP1394498A3 (fr) 2004-08-11

Family

ID=31198624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03017049A Withdrawn EP1394498A3 (fr) 2002-08-30 2003-07-28 Balle à déformation contrôlée

Country Status (2)

Country Link
EP (1) EP1394498A3 (fr)
IT (1) ITMI20021869A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2867266A1 (fr) * 2004-03-04 2005-09-09 Jean Claude Sauvestre Balle de chasse a expansion retardee
FR2867267A1 (fr) * 2004-03-08 2005-09-09 Jean Claude Sauvestre Balle de chasse a bague d'expansion
WO2006096944A1 (fr) * 2005-03-17 2006-09-21 Cbc Companhia Brasileira De Cartuchos Projectile a expansion pour armes a feu

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US44492A (en) * 1864-09-27 Tors op e
US854923A (en) * 1907-04-01 1907-05-28 George F Mcrae Bullet.
US1493614A (en) * 1920-09-01 1924-05-13 Remington Arms Co Inc Mushroom bullet
DE2541632A1 (de) * 1975-09-18 1977-03-24 Schirnecker Hans Ludwig Ing Patrone fuer faust- und schulterwaffen
FR2671620A1 (fr) * 1991-01-10 1992-07-17 Kaladgew Andre Balle a expansion controlee pour arme a canon lisse ou raye.
US5149913A (en) * 1990-09-05 1992-09-22 Arakaki Steven Y Forced expanding bullet
DE19711344A1 (de) * 1997-03-18 1997-09-25 Rudolf Koeppen Hochgeschwindigkeits-Hohlzylindergeschoß mit integriertem Treibspiegel für Feuerwaffen
US6349651B1 (en) * 1999-11-23 2002-02-26 Juan Martinez Garcia Spinning and exploding projectile

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US44492A (en) * 1864-09-27 Tors op e
US854923A (en) * 1907-04-01 1907-05-28 George F Mcrae Bullet.
US1493614A (en) * 1920-09-01 1924-05-13 Remington Arms Co Inc Mushroom bullet
DE2541632A1 (de) * 1975-09-18 1977-03-24 Schirnecker Hans Ludwig Ing Patrone fuer faust- und schulterwaffen
US5149913A (en) * 1990-09-05 1992-09-22 Arakaki Steven Y Forced expanding bullet
FR2671620A1 (fr) * 1991-01-10 1992-07-17 Kaladgew Andre Balle a expansion controlee pour arme a canon lisse ou raye.
DE19711344A1 (de) * 1997-03-18 1997-09-25 Rudolf Koeppen Hochgeschwindigkeits-Hohlzylindergeschoß mit integriertem Treibspiegel für Feuerwaffen
US6349651B1 (en) * 1999-11-23 2002-02-26 Juan Martinez Garcia Spinning and exploding projectile

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2867266A1 (fr) * 2004-03-04 2005-09-09 Jean Claude Sauvestre Balle de chasse a expansion retardee
WO2005085745A2 (fr) * 2004-03-04 2005-09-15 Jean-Claude Sauvestre Balle de chasse a expansion retardee.
WO2005085745A3 (fr) * 2004-03-04 2005-11-10 Jean-Claude Sauvestre Balle de chasse a expansion retardee.
FR2867267A1 (fr) * 2004-03-08 2005-09-09 Jean Claude Sauvestre Balle de chasse a bague d'expansion
WO2005088234A3 (fr) * 2004-03-08 2005-11-10 Jean-Claude Sauvestre Balle de chasse a bague d'expansion
WO2006096944A1 (fr) * 2005-03-17 2006-09-21 Cbc Companhia Brasileira De Cartuchos Projectile a expansion pour armes a feu

Also Published As

Publication number Publication date
ITMI20021869A1 (it) 2004-02-29
EP1394498A3 (fr) 2004-08-11

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