EP1355119A1 - Verfahren zum Aufpilzen eines Geschosses und aufpilzendes Geschoss - Google Patents

Verfahren zum Aufpilzen eines Geschosses und aufpilzendes Geschoss Download PDF

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Publication number
EP1355119A1
EP1355119A1 EP03100967A EP03100967A EP1355119A1 EP 1355119 A1 EP1355119 A1 EP 1355119A1 EP 03100967 A EP03100967 A EP 03100967A EP 03100967 A EP03100967 A EP 03100967A EP 1355119 A1 EP1355119 A1 EP 1355119A1
Authority
EP
European Patent Office
Prior art keywords
bullet
cavity
point
sealing surface
filling agent
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Withdrawn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
EP03100967A
Other languages
English (en)
French (fr)
Inventor
Antti Hietanen
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.)
Nammo Lapua Oy
Original Assignee
Nammo Lapua Oy
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
Priority claimed from FI20020167U external-priority patent/FI5551U1/fi
Application filed by Nammo Lapua Oy filed Critical Nammo Lapua Oy
Publication of EP1355119A1 publication Critical patent/EP1355119A1/de
Withdrawn legal-status Critical Current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 method according to the preamble of claim 1 for expanding a bullet and to a bullet according to the preamble of claim 2.
  • This type of bullet is used especially in hunting or other type of shooting, in which the expansion of the bullet is important.
  • the bullet point begins to strongly expand immediately the bullet hits its target, for example the skin of a game animal.
  • This action of the bullet does, however, often cause the surface muscles of the game animal to crush. As a result, this damage caused by the bullet makes part of the felled game animal inedible.
  • the bullets on the market also often have a very narrow operating range in view of their rate of travel. This means that a bullet shot at a lower rate of travel does not open properly when it hits the target, but on the other hand, higher rates of travel make the bullet burst into pieces as it hits the target. In both cases, the operation of the bullet results in that the animal dies slowly.
  • the basic idea of the invention is to provide a bullet body made of copper or some other soft, but high-tensile metal and having a hollow cavity or recess.
  • a point piece made of plastic or the like can be arranged in this hollow space.
  • the specific design of the body and the point piece arranged in the hollow space produces a bullet with steady flight properties, but which expands effectively when it hits the target.
  • the method and bullet of the present invention are suitable for use both in hunting and in other shooting.
  • the bullet is also suitable for both rifle and pistol shooting.
  • the present method for expanding the point of a bullet then preferably comprises a bullet described later in more detail and having a substantially cylindrical body 1 and a substantially conically convergent point 2.
  • a cavity 4 is arranged to extend from the point towards the base 3 of the bullet, and the cavity is at least partly filled with a filling agent 5.
  • the filling agent 5 presses into the cavity 4 due to the force action between the bullet and target and guided by the sealing surface 6.
  • the filling agent pressing into the cavity also frees the point of the bullet for the force action directed to it by the target and speeds up the expansion of the bullet.
  • the filling agent when pressing into the cavity, also expands the bullet at its opening in the cavity. This way, the expanding point of the bullet is subjected to an ever-increasing force action directed by the target to the bullet and speeding up the final expansion of the bullet.
  • the extent and rate of the expansion of the bullet can be significantly adjusted by selecting a different length and/or diameter for the cavity.
  • the shape of the sealing surface and the material of the bullet body can also be used to influence the expansion of the bullet.
  • Attached Figure 1 shows a preferred embodiment of the bullet, in which the bullet comprises a substantially cylindrical body 1 and a conically convergent point 2 made of copper, for instance, or by combining several materials.
  • a preferably cylindrical cavity 4 is arranged to extend from the point of the bullet towards the base 3 of the bullet.
  • the diameter and length of the cavity vary strongly depending on the use of the bullet, the gun type and calibre.
  • the diameter of the cavity can be 20 to 60% of the diameter of the body.
  • the length of the cavity can in turn vary between 5 and 48% of the entire length of the bullet.
  • This cavity 4 is arranged to receive a filling agent 5 that fills it at least partly.
  • the filling agent often comprises a separate stopper-like piece made especially for this purpose and is referred to as point piece hereafter.
  • the length of the point piece also affects the properties of the bullet and is preferably 15 to 90% in relation to the length of the cavity.
  • This filling agent preferably comprises a plastic material, but may also comprise a combination of several materials.
  • a sealing surface 6 is formed at the point 2 of the bullet between the cavity 4 and the point piece 5.
  • An essential feature of the sealing surface is its conical shape, whereby the sealing surface expands towards the point of the bullet.
  • the angle ⁇ between the sealing surface and the longitudinal axis 7 of the bullet is in the range of 10° to 80°, preferably about 45°. Because the point piece forms the outermost section of the point of the bullet, it extends beyond the cylindrical walls of the cavity and can be described as a mushroom with a small pileus, for instance.
  • the positioning of the sealing surface can also be used to affect the behaviour of the bullet.
  • the sealing surface has a diameter that can vary between 30 to 90% of the diameter of the body of the bullet, and the selected diameter of the sealing surface defines its positioning in relation to the cylindrical body 1.
  • Attached Figure 2 shows a second alternative embodiment of the bullet that differs from the embodiment of Figure 1 in the structure of the sealing surface 6 at the point 2 of the bullet.
  • the conical shape of the sealing surface 6 is arranged to extend from the edge of the cavity 4 to the outer jacket 8 of the bullet.
  • the sealing surface of the bullet comprises, however, not only the conical surface 6 but also a cylindrical section 9 that is substantially parallel to the longitudinal axis 7 of the bullet.
  • This type of cylindrical section is conventionally only 0.1 to 2.0 mm in size.
  • the length of the cylindrical section is most preferably about 0.5 mm. It is, however, possible to make a bullet in which this cylindrical section is as much as 50% of the length of the bullet.
  • the point piece in this embodiment of Figure 2 also forms the outermost section of the point of the bullet, the point piece extends beyond the cylindrical walls of the cavity in this case, too. Due to the cylindrical section of the sealing surface, a filling agent aggregation that is significant in mass and especially in volume is this way formed on the outer edge of the cavity.
  • FIG. 3 shows a third alternative embodiment of the bullet that also differs from the embodiments of Figures 1 and 2 in the structure of the sealing surface 6 at the point 2 of the bullet.
  • the sealing surface 6 in the embodiment of Figure 3 comprises both the conical section of Figure 1 and a planar surface 10 perpendicular to the longitudinal axis 7 of the bullet. This planar surface combines the conical section of the sealing surface to the outer jacket 8 of the bullet.
  • the present bullet may naturally also comprise any obvious combination of the presented embodiments.
  • the point piece 5 when hitting the target, makes the bullet expand more effectively than usually by pushing into the cavity 4 and pressing the inner walls 11 in the cavity away from each other.
  • Figures 3, 4 and 5 show schematically how the bullet expands when it hits and pushes into the target.
  • the point pieces push into the cavity 4 of the bullet sliding along the sealing surface 6 of the bullet when the bullet hits a targeted game animal, for instance.
  • the sealing surface 6 of the bullet and the point piece 5 in the cavity prevent the fluid and muscle mass in the tissues of the game animal from entering the cavity 4, as a result of which the bullet pushes quite deep into the target.
  • the pushing of the wedge-like point piece into the cavity due to the impact changes the shape of the point of the bullet as shown in Figure 4. As the bullet enters more deeply into the target, the point piece also pushes deeper into the cavity.
  • the present bullet provides an inlet wound with only a little crushing and the transfer of the high kinetic energy of the bullet to the inner organs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP03100967A 2002-04-15 2003-04-10 Verfahren zum Aufpilzen eines Geschosses und aufpilzendes Geschoss Withdrawn EP1355119A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI20020167U 2002-04-15
FI20020167U FI5551U1 (fi) 2002-04-15 2002-04-15 Venttiili luoti
FI20021196 2002-06-19
FI20021196A FI112701B (fi) 2002-04-15 2002-06-19 Menetelmä luodin laajentamiseksi ja luoti

Publications (1)

Publication Number Publication Date
EP1355119A1 true EP1355119A1 (de) 2003-10-22

Family

ID=26161278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03100967A Withdrawn EP1355119A1 (de) 2002-04-15 2003-04-10 Verfahren zum Aufpilzen eines Geschosses und aufpilzendes Geschoss

Country Status (3)

Country Link
US (1) US20040003747A1 (de)
EP (1) EP1355119A1 (de)
FI (1) FI112701B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006096944A1 (en) * 2005-03-17 2006-09-21 Cbc Companhia Brasileira De Cartuchos Expansion projectile for firearms
WO2013086544A3 (en) * 2011-12-07 2013-08-01 Sme Engineering (Pty) Ltd A bullet
WO2014135752A1 (en) 2013-03-08 2014-09-12 Nurminen Vesa Bullet and method for expanding a bullet
WO2015118173A1 (de) * 2014-02-10 2015-08-13 Ruag Ammotec Gmbh Pb-freies deformations-teilzerlegungsgeschoss mit einem definierten aufpilz- und zerlegungsverhalten
WO2021170899A1 (en) 2020-02-28 2021-09-02 Sako Oy Bullet

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7373887B2 (en) * 2006-07-01 2008-05-20 Jason Stewart Jackson Expanding projectile
US7966937B1 (en) 2006-07-01 2011-06-28 Jason Stewart Jackson Non-newtonian projectile
DE102014224715B4 (de) * 2014-10-29 2019-07-11 Metallwerk Elisenhütte GmbH Unterschallpatrone mit einem Geschoss sowie Geschoss für eine solche
US11313657B1 (en) 2016-11-14 2022-04-26 Erik Agazim Multi-piece projectile with an insert formed via a powder metallurgy process
WO2020106401A2 (en) * 2018-10-30 2020-05-28 Olin Corporation Hollow point bullet
US11428517B2 (en) 2019-09-20 2022-08-30 Npee L.C. Projectile with insert
DE102020116589A1 (de) * 2020-06-24 2021-12-30 Rheinmetall Waffe Munition Gmbh Penetrator, Verwendung eines Penetrators und Geschoss
DE102021104760A1 (de) * 2021-02-26 2022-09-01 Ruag Ammotec Ag Deformationsgeschoss für Polizei- und Behördenmunition

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2843167A1 (de) * 1978-10-04 1980-04-17 Schirnecker Hans Ludwig Geschoss, insbesondere jagdgeschoss
DE2909471A1 (de) * 1979-03-10 1980-09-11 Schirnecker Hans Ludwig Geschoss, beispielsweise fuer jagdzwecke, und verfahren zu seiner herstellung
US4655140A (en) * 1979-03-10 1987-04-07 Schirnecker Hans Ludwig Projectile, for example for hunting purposes, and process for its manufacture
DE3840165A1 (de) * 1988-06-06 1990-07-05 Schirnecker Hans Ludwig Vielfachgeschoss

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1094395A (en) * 1914-02-17 1914-04-21 Jan Willem Peppelman Van Kampen Universal rifle-projectile.
US1447478A (en) * 1921-07-05 1923-03-06 Emil J Koshollek Bullet
US2123981A (en) * 1935-09-28 1938-07-19 Remington Arms Co Inc Ammunition
US3003420A (en) * 1956-10-01 1961-10-10 Nosler Partition Bullet Compan Partition bullets
US4044685A (en) * 1971-06-18 1977-08-30 Hirtenberger Patronen-, Zundhutchen- Und Metallwarenfabrik Aktiengesellschaft Jacketless hunting bullet with roll-back cutting flags
DE2530155A1 (de) * 1975-07-05 1977-02-03 Dynamit Nobel Ag Geschoss, insbesondere fuer faustfeuerwaffen und maschinenpistolen
US4793037A (en) * 1987-02-06 1988-12-27 Carter Herman L Method of making a bullet
US4879953A (en) * 1987-02-06 1989-11-14 Carter Herman L Bullet
US4776279A (en) * 1987-09-17 1988-10-11 Pejsa Arthur J Expanding ballistic projectile
DE3838584A1 (de) * 1988-11-14 1990-05-23 Karl Klaus Mayer Geschoss der deformations-klasse, fuer jagd - buechsenpatronen
US5185495A (en) * 1992-04-13 1993-02-09 Petrovich Robert M Projective with improved flowering
US5404815A (en) * 1993-08-20 1995-04-11 Swift Bullet Company Bullet and process for making same
US5621186A (en) * 1995-09-20 1997-04-15 Trophy Bonded Bullets, Inc. Bullet
US6105506A (en) * 1997-09-23 2000-08-22 Antonio C. Gangale Sabot slug for shotgun
US6244187B1 (en) * 1999-07-01 2001-06-12 Federal Cartridge Company Increased velocity-performance-range bullet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2843167A1 (de) * 1978-10-04 1980-04-17 Schirnecker Hans Ludwig Geschoss, insbesondere jagdgeschoss
DE2909471A1 (de) * 1979-03-10 1980-09-11 Schirnecker Hans Ludwig Geschoss, beispielsweise fuer jagdzwecke, und verfahren zu seiner herstellung
US4655140A (en) * 1979-03-10 1987-04-07 Schirnecker Hans Ludwig Projectile, for example for hunting purposes, and process for its manufacture
DE3840165A1 (de) * 1988-06-06 1990-07-05 Schirnecker Hans Ludwig Vielfachgeschoss

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006096944A1 (en) * 2005-03-17 2006-09-21 Cbc Companhia Brasileira De Cartuchos Expansion projectile for firearms
WO2013086544A3 (en) * 2011-12-07 2013-08-01 Sme Engineering (Pty) Ltd A bullet
US9316468B2 (en) 2011-12-07 2016-04-19 Sme Engineering (Pty) Ltd Bullet
WO2014135752A1 (en) 2013-03-08 2014-09-12 Nurminen Vesa Bullet and method for expanding a bullet
WO2015118173A1 (de) * 2014-02-10 2015-08-13 Ruag Ammotec Gmbh Pb-freies deformations-teilzerlegungsgeschoss mit einem definierten aufpilz- und zerlegungsverhalten
US11199386B2 (en) 2014-02-10 2021-12-14 Ruag Ammotec Ag PB-free deforming/partially fragmenting projectile with a defined mushrooming and fragmenting behavior
WO2021170899A1 (en) 2020-02-28 2021-09-02 Sako Oy Bullet

Also Published As

Publication number Publication date
US20040003747A1 (en) 2004-01-08
FI20021196A0 (fi) 2002-06-19
FI20021196A (fi) 2003-10-16
FI112701B (fi) 2003-12-31

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