EP0723649B1 - Propfen für schrotpatronen zur verminderung des rückstosses - Google Patents

Propfen für schrotpatronen zur verminderung des rückstosses Download PDF

Info

Publication number
EP0723649B1
EP0723649B1 EP94928977A EP94928977A EP0723649B1 EP 0723649 B1 EP0723649 B1 EP 0723649B1 EP 94928977 A EP94928977 A EP 94928977A EP 94928977 A EP94928977 A EP 94928977A EP 0723649 B1 EP0723649 B1 EP 0723649B1
Authority
EP
European Patent Office
Prior art keywords
round
charge
ammunition according
base
formations
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.)
Expired - Lifetime
Application number
EP94928977A
Other languages
English (en)
French (fr)
Other versions
EP0723649A1 (de
Inventor
Francis Chetcuti
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0723649A1 publication Critical patent/EP0723649A1/de
Application granted granted Critical
Publication of EP0723649B1 publication Critical patent/EP0723649B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B7/00—Shotgun ammunition
    • F42B7/02—Cartridges, i.e. cases with propellant charge and missile
    • F42B7/08—Wads, i.e. projectile or shot carrying devices, therefor

Definitions

  • the present invention relates to a device for reducing recoil in weapons. It is applicable to all types of weapons in which the ignition of gunpowder, or cordite, or the like, is employed to propel a projectile or projectiles in a forward direction.
  • a known shotgun cartridge is a shown in the accompanying Fig. 1.
  • a casing 10 encloses, in sequence, a primer 12 held by an end cap 13, a charge 14, and wad 16, and a quantity of shot 18.
  • the shot is retained in place by a cap 20.
  • the cartridge is fired by striking the primer 12, causing ignition thereof and hence ignition of the charge 14. Gases are produced by this latter ignition under high pressure which propel the rear face 22 of the wad 16 in a forward direction. This initially causes crushing of the wad 16 and then forward acceleration of the shot 18, and rupture of the cap 20.
  • the purpose of wad 16 is to protect the shot 18 from too sudden acceleration.
  • US-A-3359906 discloses a shotgun shell having a base wad of plastic material disposed between the shell base and a charge.
  • the precharacterising part of Claim 1 is based on the disclosure of US-A-3359906.
  • US-A-4805535 discloses a shotgun cartridge having a wad of plastic material disposed between the charge and a plurality of projectiles.
  • the present invention provides a round of ammunition comprising a casing, and a base, within the casing there being contained a charge, at least one projectile forward of the charge, and a gap between the base and the charge, the gap being at least partially occupied by a charge support which separates the charge from the base, wherein on discharge of the round, the charge support undergoes compressive deformation, characterised in that the charge support incorporates one or more hollow, air-filled formations which undergo resilient or crushing deformations on discharge of the round.
  • a crushable material can be provided in the space between the rear internal face of the round and the rear jack portion.
  • a suitable material is expanded polystyrene.
  • circumferential ribs can be provided on an internal face of the round or on an external surface of the column, (where provided).
  • a shotgun casing 10 has an end cap 13 holding a primer 12.
  • the primer 12 communicates with an internally fluted duct 22 formed axially within a tapering column 24.
  • the duct 22 leads to a charge 14 enclosed by a jacket consisting of a forward jacket portion 28 and rear jacket portion 30.
  • the rear jacket portion 30 has an aperture 32 which fits snugly about the end of the column 24.
  • the forward jacket portion 28 has a rearwardly directed axial projection 34 in the shape of a truncated circular pyramid Ahead of the forward jacket portion 28 is a quantity of shot (not shown) in the region 18.
  • the shot would normally be retained within the casing by a cap (not shown) similar to the cap 20 of Fig. 1.
  • the cartridge is fired by striking the external surface of the primer 12, causing explosion thereof. Flames travel along the duct 22 to the charge 14.
  • the projection 34 promotes uniform distribution of the flames about the charge 14 and thus gives near simultaneous ignition of the entire charge. Expansion of the gases produced by ignition of the charge 14 drive the forward jacket portion forward and the rear jacket portion rearward.
  • the forward motion of the forward jacket portion 28 causes expulsion of the shot in the conventional fashion.
  • Rearward motion of the rear jacket portion 30 is gradually arrested by absorption of its kinetic energy through deformation of the opening 32 as it is driven down the taper of the column 24.
  • the rearward momentum corresponding to the forward momentum of the shot is transmitted to the rear jacket portion 30, rather than the weapon itself. Since the energy of this motion is absorbed in deformation of the jacket portion, a significantly reduced recoil is produced. Hence, a better shooting performance can be obtained due to decreased fatigue or nervousness on the part of the firer. Alternatively, a larger charge can be employed to give a greater muzzle velocity with no substantial increase in recoil over the prior art cartridge.
  • the forward surface of the rear jacket portion 30 has an axially centred ring-shaped recess 36 (an alternative being shown in Fig. 3B where the recess 36 is in rearward surface).
  • This recess 36 increases the radial flexibility of the rear jacket portion 30, the effect of which is to take up the increase in diameter of the opening 32 without causing an increase in the overall diameter of the rear jacket portion 30.
  • bulging of the cartridge during firing is inhibited, allowing easier removal of the cartridge from the barrel of the weapon.
  • radially extending grooves 38 are also shown in Fig. 4, which allow better distribution of the flames from the primer 12 about the charge 14.
  • Figs. 5A and 5B show an alternative to the circular-cross section column 24 of Figs. 2 to 4, being a column of polygonal cross section (or of round cross section, this being particularly suited for manufacture by injection moulding), the column could conveniently be manufactured as an integral part of an injected, moulded or drawn shotgun cartridge.
  • Fig. 7 shows the column and rear jacket portion of Figs. 3 and 4 after firing.
  • the rear jacket portion 30 is retained against forward motion by the rib 26. Forward motion of the rear jacket portion 30 into the barrel of the weapon is undesirable since this could cause bulging of the barrel on firing of a further round.
  • the column 24 is formed with a dovetail section 39 which engages with a corresponding recess provided on an internal face of the cartridge.
  • the primer 12 may be formed with external ribs 60 which engage and grip the inner wall of the duct 22 to further resist forward movement of the inner jacket portion, and/or the recoil device.
  • Figs. 8 and 9 show alternative arrangements for restraining forward motion of the column 24 into the barrel.
  • the column 24 has a recess 37 which fits around a corresponding annular dovetail 39 on the base of the cartridge.
  • the column 24 could be formed integrally with the cartridge 10, as shown in Fig. 2.
  • Fig. 9 also shows the use of hollow crushable rings of plastics within the region around the column 24, as an energy absorbing means.
  • expanded polystyrene can be employed, as solid rings or spheres or the like.
  • a forward jacket portion 28 consists of a generally cylindrical structure 40 divided into a shot retaining portion 42 and a charge retaining portion 44 by a dividing portion 46.
  • the dividing portion 46 has a member 34 projecting into the charge retaining portion to promote uniform distribution of flames from the primer (not shown).
  • the dividing member further has an axially centred, annular projection 48 which extends into the shot-retaining portion 42, and a central, generally conical projection 34 which extends into the charge-retaining portion 44.
  • a charge support 31 disposed between the cartridge base 13 and the jacket portion 28.
  • the charge support 31 (which is separate from the jacket portion 28) comprises a platform member 32 into which the charge is received which is supported on a recoil-absorbing struture which is, in turn, carried on the base plate.
  • the recoil absorbing structure comprises two toric members 116 of resilient material in each of which is an air space 41.
  • a duct 22 extends axially through the cartridge base 13 and the toric members 116 to provide a flame path between a primer (not shown in Figs. 10 to 12) and the platform member 32.
  • Figs. 11 and 12 illustrate alternative constructions of cartridges embodying the above described components.
  • the charge support 31 could be formed integrally with the base plate of the cartridge. This is made possible since the reduction in recoil forces resulting from the invention allows the base plate to be formed from a wider range of materials (including, for example, plastics, which may, for example, be drawn or injection moulded) than hitherto possible.
  • a substantially conventional base plate 13 may be used.
  • a dovetail formation (as described above) may be employed to this end.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Fats And Perfumes (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Developing Agents For Electrophotography (AREA)

Claims (16)

  1. Patrone zum Verfeuern, umfassend eine Hülse (10) und einen Boden (13), wobei sich in der Hülse (10) eine Ladung (14), zumindest ein Geschoß (42) vor der Ladung (14) und ein Zwischenraum zwischen dem Boden und der Ladung (14) befindet, wobei der Zwischenraum zumindest teilweise von einem Ladungsträger (31) eingenommen wird, der die Ladung (14) vom Boden (13) trennt, wobei beim Abfeuern der Patrone der Ladungsträger (31) Verformung durch Zusammendrücken erfährt, dadurch gekennzeichnet, daß der Ladungsträger (31) eine oder mehrere hohle, luftgefüllte Formationen (116) umfaßt, die beim Abfeuern der Patrone elastische oder Zerdrückungsverformung erfahren.
  2. Patrone zum Verfeuern nach Anspruch 1, bei der die hohlen luftgefüllten Formationen (116) eine Vielzahl von Formationen mit rohrförmigem Querschnitt umfassen.
  3. Patrone zum Verfeuern nach Anspruch 2, bei der die Formationen (116) zwischen einem die Ladung (14) berührenden Plattformelement (32) und dem Boden (13) der Patrone angeordnet sind.
  4. Patrone zum Verfeuern nach Anspruch 3, bei der die zwei oder mehreren Ausbildungen (116) in einer Linie zwischen dem Plattformelement (32) und dem Boden angeordnet sind.
  5. Patrone zum Verfeuern nach Anspruch 4, bei der entweder zwei oder drei Formationen (41) zwischen dem Boden (13) und dem Plattformelement (32) angeordnet sind.
  6. Patrone zum Verfeuern nach einem der vorangegangenen Ansprüche, bei der der Ladungsträger ein Spritzgußformkörper aus Kunststoffmaterial ist.
  7. Patrone zum Verfeuern nach einem der vorangegangenen Ansprüche, bei der der Ladungsträger einstückig mit dem Boden der Patrone verbunden ist.
  8. Patrone zum Verfeuern nach einem der Ansprüche 1 bis 6, bei der der Ladungsträger eine diskrete Komponente ist, die in den Körper eingesetzt ist, wobei Haltemittel (37; 50) vorgesehen sind, um sie darin zu halten.
  9. Patrone zum Verfeuern nach Anspruch 8, bei der das Haltemittel ineinander verriegelnde Formationen (39) auf dem Ladungsträger und auf dem Boden (13) der Patrone umfaßt.
  10. Patrone zum Verfeuern nach Anspruch 8, bei der das Haltemittel einen Bereich mit verringertem Durchmesser (50) des Körpers (10) der Patrone umfaßt.
  11. Patrone zum Verfeuern nach einem der vorangegangenen Ansprüche, umfassend einen Mantelabschnitt (28) innerhalb der Hülse (10), wobei der Mantelabschnitt (28) eine Trennwand (46) aufweist, die zwischen der Ladung (14) und zumindest einem Geschoß (42) angeordnet ist.
  12. Patrone zum Verfeuern nach Anspruch 11, bei der die Trennwand (46) eine Ausbildung (34) aufweist, die in die Ladung (14) ragt, um für gleichmäßige Verteilung der Verbrennung darin zu sorgen.
  13. Patrone zum Verfeuern nach Anspruch 11 oder 12, in der der Mantelabschnitt (28) einen im allgemeinen zylindrischen Schrothalteabschnitt aufweist, der sich von der rennwand (46) nach vorne erstreckt.
  14. Patrone zum Verfeuern nach einem der Ansprüche 11 bis 13, in der der Mantelabschnitt (28) innerhalb der Hülse satt an der Patrone anliegt.
  15. Patrone zum Verfeuern nach Anspruch 14, bei der ein Zündhütchen (12) im Boden (13) der Patrone angeordnet ist, wobei sich ein Kanal (22) durch den Ladungsträger (30) hindurch erstreckt, um Flammen vom Zündhütchen (12) zur Ladung (14) hin zu lenken.
  16. Patrone zum Verfeuern nach Anspruch 15, bei der sich der Kanal (22) zum Zündhütchen (12) hin verjüngt.
EP94928977A 1993-10-12 1994-10-12 Propfen für schrotpatronen zur verminderung des rückstosses Expired - Lifetime EP0723649B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9321016 1993-10-12
GB939321016A GB9321016D0 (en) 1993-10-12 1993-10-12 Recoil reducer for cartridges or other ammunition
PCT/GB1994/002228 WO1995010752A1 (en) 1993-10-12 1994-10-12 Recoil reducer wad for shotgun ammunition

Publications (2)

Publication Number Publication Date
EP0723649A1 EP0723649A1 (de) 1996-07-31
EP0723649B1 true EP0723649B1 (de) 1998-06-24

Family

ID=10743391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94928977A Expired - Lifetime EP0723649B1 (de) 1993-10-12 1994-10-12 Propfen für schrotpatronen zur verminderung des rückstosses

Country Status (8)

Country Link
EP (1) EP0723649B1 (de)
CN (1) CN1159222A (de)
AU (1) AU676095B2 (de)
CA (1) CA2173968A1 (de)
DE (1) DE69411279D1 (de)
ES (1) ES2121232T3 (de)
GB (1) GB9321016D0 (de)
WO (1) WO1995010752A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2011004500A (es) 2008-10-27 2011-07-19 Ra Brands Llc Taco con camara de ignicion.
US8800449B2 (en) 2008-10-27 2014-08-12 Ra Brands, L.L.C. Wad with ignition chamber
US8555785B2 (en) 2009-02-02 2013-10-15 Ra Brands, L.L.C. Shotshell wad with shot confinement feature
US9360223B1 (en) 2013-03-15 2016-06-07 Vista Outdoor Operations Llc High velocity ignition system for ammunition
WO2014144104A2 (en) 2013-03-15 2014-09-18 Alliant Techsystems Inc. Combination gas operated rifle and subsonic cartridge
IT201900020288A1 (it) * 2019-11-04 2021-05-04 Sullivan Costi Dispositivo per l'assorbimento della retrospinta di sparo in un'arma da fuoco

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE78438C (de) * F. KRUG, Halberstadt, Hohe Weg 11 Schrotpatrone mit Papierhülse und Dichtungspfropfen
DE306951C (de) *
GB191015517A (en) * 1910-06-28 1911-06-28 Gottlob Emmanuel Loeble Improvements in Cartridges.
FR1116967A (fr) * 1954-12-31 1956-05-15 Bourre semi-pneumatique en matière plastique pour cartouches de chasse
FR1186659A (fr) * 1957-11-22 1959-08-31 Rhone Alpes Soc Ind Bourre pour munitions d'armes à feu
AU422052B2 (en) * 1966-11-28 1972-03-03 Wad column
FR1454931A (fr) * 1964-12-07 1966-10-07 Remington Arms Co Inc élément réglant le groupement des plombs d'une cartouche
US3359906A (en) * 1965-12-20 1967-12-26 Herter Inc S Shotshell base wad
DE1453837B2 (de) * 1965-12-28 1976-04-22 Dynamit Nobel Ag, 5210 Troisdorf Artilleriekartusche
US3669023A (en) * 1969-07-01 1972-06-13 Olin Mathieson Shot protector
ZA78670B (en) * 1978-02-03 1979-11-28 Andre Theodor Dreyer Shotshells
DE3241149C2 (de) * 1982-11-08 1984-12-20 Wilhelm Brenneke Kg Fabrikation Von Jagdgeschossen, 3012 Langenhagen Flintenlaufgeschoß
US4805535A (en) * 1987-05-13 1989-02-21 Marcon Robert V Projectile
IL92941A0 (en) * 1989-01-04 1990-09-17 Piepenbrock Pyrotechnik Gmbh Training cartridge for recoilless defense weapons

Also Published As

Publication number Publication date
EP0723649A1 (de) 1996-07-31
CA2173968A1 (en) 1995-04-20
GB9321016D0 (en) 1993-12-01
CN1159222A (zh) 1997-09-10
AU676095B2 (en) 1997-02-27
WO1995010752A1 (en) 1995-04-20
AU7819894A (en) 1995-05-04
ES2121232T3 (es) 1998-11-16
DE69411279D1 (de) 1998-07-30

Similar Documents

Publication Publication Date Title
US4970959A (en) Collapsible basewad
US3496869A (en) Sabot projectile
US6782828B2 (en) Pliant firearm projectiles
US4958567A (en) Training cartridge with improved case for fixing propellant position in powder chamber
US4653404A (en) High velocity notched ammunition sabot
JP3388640B2 (ja) 縮射用弾丸のための放出可能な装弾筒
CA2360239C (en) Marker projectile
EP0616684A1 (de) Übungsgeschoss
US4805535A (en) Projectile
US3507220A (en) Ammunition round
US4172420A (en) Propellant charge for recoilless weapons
EP0723649B1 (de) Propfen für schrotpatronen zur verminderung des rückstosses
US5710391A (en) Recoil reducer wad for ammunition
US5173571A (en) Projectile guide for telescoped ammunition
US20050115392A1 (en) Countermass weapon
RU2492408C1 (ru) Травматический патрон для бесствольного оружия
KR100331776B1 (ko) 소구경발사체를위한부품들이조절분리되는탄환발사장치
US3720171A (en) Plastic shot shell wad
US5063852A (en) Forward full caliber control tube for a cased telescoped ammunition round
US6490959B2 (en) Recoilless telescoping barrel gun
TW202400958A (zh) 玩具榴彈及其彈丸裝填裝置
RU2075033C1 (ru) Активно-реактивный снаряд
RU2080552C1 (ru) Пуля омельяненко для гладкоствольного оружия
CA1142782A (en) Device for launching of a projectile from a launching tube opened at its two ends
RU2458317C1 (ru) Пуля "бабочка подкалиберная" и патрон для гладкоствольного оружия

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960502

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE DK ES FR GB IT SE

17Q First examination report despatched

Effective date: 19960813

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE DK ES FR GB IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980624

REF Corresponds to:

Ref document number: 69411279

Country of ref document: DE

Date of ref document: 19980730

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980924

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980924

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980925

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2121232

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040205

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20040211

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040220

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041012

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041013

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20041012

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051012

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20041013