EP0640205B1 - Hülse für teleskopische munitionen - Google Patents

Hülse für teleskopische munitionen Download PDF

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Publication number
EP0640205B1
EP0640205B1 EP94909162A EP94909162A EP0640205B1 EP 0640205 B1 EP0640205 B1 EP 0640205B1 EP 94909162 A EP94909162 A EP 94909162A EP 94909162 A EP94909162 A EP 94909162A EP 0640205 B1 EP0640205 B1 EP 0640205B1
Authority
EP
European Patent Office
Prior art keywords
plug
envelope
ring
casing
reinforcing means
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
EP94909162A
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English (en)
French (fr)
Other versions
EP0640205A1 (de
Inventor
Bruno Barratault
Michel Baubois
Roland Boual
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.)
CTA International SAS
Original Assignee
CTA International SAS
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 CTA International SAS filed Critical CTA International SAS
Publication of EP0640205A1 publication Critical patent/EP0640205A1/de
Application granted granted Critical
Publication of EP0640205B1 publication Critical patent/EP0640205B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/045—Cartridges, i.e. cases with charge and missile of telescopic type

Definitions

  • the field of the present invention is that of cases for telescoped type ammunition.
  • Patent FR2679991 discloses a telescoped type of munition which comprises a case consisting of a plastic envelope, closed at each end by a plug, also made of plastic.
  • the choice of a plastic material to make the case makes it easier to extract the latter out of the weapon after firing. In fact, the plastic case does not exhibit residual radial expansion.
  • Patent FR2679991 (cf. the preamble to claim one) proposes to have metal reinforcing means at the part of the plugs which is located outside the casing of the case. These reinforcing means consist of a ring which can be optionally supplemented at the base with a plate.
  • the subject of the invention is a case for ammunition of the telescoped type and consisting of a cylindrical plastic casing carrying at each end a plastic cap fitted of a metallic reinforcing means which comprises a peripheral cylindrical part and an external rim or a bottom, reinforcing means which completely covers one end of the plug extending out of the envelope, case characterized in that it comprises at least an annular space, arranged on the stopper in the vicinity of one end of the envelope in contact with the reinforcing means, space intended to absorb the deformation of the stopper during firing and making it possible to avoid the formation of a bead.
  • the reinforcing means will be constituted for the front plug by a metal ring comprising a peripheral cylindrical part and an external rim and for the rear plug by a metal plate comprising a bottom and a peripheral cylindrical part.
  • the ring By completely covering the front end of the front stopper, the ring maintains this part of the stopper which is intended to come into contact with the weapon.
  • the cylindrical part and the external rim prevent the formation when an annular bead is pulled from the front part of the case.
  • the annular space makes it possible to absorb the expansion of the plastic material of the stopper and thus prevents the formation of a bead between the case and the means of reinforcement of the stopper.
  • the plate completely covers the rear end of the rear plug and maintains this part of the plug which would be intended to come into contact with the weapon.
  • the cylindrical part and the bottom thus prohibit the formation during the firing of an annular bead at the rear part of the case, the annular space making it possible to absorb the expansion of the plastic material of the stopper.
  • the annular space is delimited by two annular surfaces substantially flat and normal to the axis of the ammunition, one carried by the reinforcement means and the other carried by the plug.
  • the reinforcement means is made integral with the stopper by hooking an annular fold carried by the reinforcement means on a peripheral groove of the stopper.
  • the reinforcing means have an external diameter at least equal to the nominal diameter of the envelope at the maximum temperature of use of the case.
  • At least one internal annular cavity is provided between the front plug and the reinforcing ring so as to allow the axial and radial deformations of the plug caused by the passage of the projectile to be absorbed.
  • At least one plug has a peripheral annular groove intended to be opposite the envelope, and the envelope is deformed during assembly so as to penetrate into the groove of the plug to secure the latter. with the envelope.
  • the deformation may be carried out at points regularly distributed angularly.
  • the invention also relates to a munition of the telescoped type comprising such a case inside which is disposed a projectile, a propellant charge and a device for igniting the propellant charge.
  • a case for a telescoped type of munition 1 is constituted by a cylindrical casing 2 made of plastic material, closed at its ends by two plugs 3a, 3b also made of plastic.
  • the case is intended to contain a projectile 4 as well as a propellant charge (not shown).
  • the projectile sketched in FIG. 1 is a projectile of the under-calibrated type stabilized by empennage, but another type of projectile in particular a caliber projectile could be put in place in such a case.
  • the front plug 3a is equipped with a metallic reinforcement means 5 which is a ring whose external diameter is at least equal to the nominal diameter of the casing 2 at the maximum temperature of use of the ammunition.
  • the ring 5 has a peripheral cylindrical part 6 and an external rim 7 and it covers a front end 8 of the plug which extends outside the casing 2.
  • the ring 5 By completely covering the front end of the stopper, the ring 5 maintains this part of the stopper which is intended to come into contact with the weapon.
  • the cylindrical part 6 and the rim 7 thus prohibit the formation during the firing of an annular bead at the front part of the case.
  • the internal diameter of the ring 5 is less than or equal to the internal diameter of the front plug 3a, while being sufficient to allow the passage of the projectile 4.
  • the ring 5 constitutes an abutment surface which allows the front part of the plug 3a to be maintained during the passage of the projectile 4.
  • the ring 5 therefore prohibits the tearing of the material constituting the plug 3a when the projectile is fired, which allows the front plug 3a to perform its function of guiding the projectile during its exit from the case.
  • An annular space 20a is arranged on the plug 3a opposite an end 21a of the casing 2 which comes into contact with the reinforcing ring 5.
  • This annular space allows the shot to absorb at this level the deformation of the front plug 3a.
  • An annular cavity 9 is arranged between the front plug 3a and the reinforcing ring 5.
  • This cavity absorbs the axial and radial deformation of the plug 3a which is caused by the passage of the projectile during firing, which prevents tearing of the material constituting the plug 3a during firing of the projectile and allows the front plug 3a to ensure its projectile guidance function during its exit from the case.
  • the dimensioning of the annular space and cavity will be carried out according to the values of the operating pressures and the deformation characteristics of the material constituting the plug.
  • a rear part of the plug 3a has a sealing lip 10a which is slightly over-calibrated with respect to the casing 2. Such a lip is described by patent FR2679991.
  • connection of the plug 3a and the reinforcement ring 5 is obtained by attaching an annular fold 11a carried by the ring 5 on a peripheral groove 12a arranged on the plug.
  • the reinforcement ring is put in place by means of a press.
  • the annular fold 11a is applied against the plug 3a and produces an elastic deformation of the material constituting the latter to come into place in the groove 12a.
  • the plug 3a also includes an annular groove 13a which is arranged opposite the internal surface of the envelope 2.
  • the cap When mounting the ammunition, after placing the projectile inside the case, the cap is returned before secured to the casing 2 by punctually deforming the latter so as to make it penetrate into the annular groove 13.
  • the point deformations 14 are substantially circular, they are produced by cold deformation using a cylindrical tool and they are regularly distributed angularly around the envelope 2 as can be seen in FIG. 2.
  • the rear plug 3b of the case is equipped with a metallic reinforcement means which is a plate 15 having a bottom 16 and a peripheral cylindrical part 17.
  • the cylindrical part 17 has an external diameter which is at least equal to the nominal diameter of the casing 2 at the maximum temperature of use of the munition.
  • the case therefore thus comprises a metallic cylindrical part (6 and 17) disposed at each of its ends.
  • These cylindrical parts have a diameter at least equal to the nominal diameter of the casing 2 at the maximum temperature of use of the ammunition. They therefore have a diameter which is always greater than or equal to the diameter of the envelope whatever the temperature of use.
  • Such an arrangement ensures good centering of the holster in the chamber of the weapon regardless of the temperature of the holster and in particular when the temperature is very low and the casing 2 of plastic material then has a minimum diameter.
  • the bottom 16 and the cylindrical part 17 cover a rear end 18 of the plug 3b which extends out of the envelope.
  • the plate 15 has a bore intended to receive an igniter 19 of the type described by patent FR2679994.
  • the plate 15 By completely covering the end 18 of the rear plug 3b, the plate 15 maintains this part of the cap which would be intended to come into contact with the weapon.
  • the plate thus prohibits the formation when firing an annular bead at the rear part of the case.
  • An annular space 20b is arranged on the rear plug 3b opposite an end 21b of the casing 2 which comes into contact with the reinforcing plate 15.
  • This annular space allows the shot to absorb at this level the deformation of the rear plug 3b.
  • the dimensioning of the annular space will be carried out according to the values of the pressures of use and the characteristics of deformation of the material constituting the plug.
  • the plug 3b also has a sealing lip 10b which is slightly over-calibrated relative to the casing 2.
  • connection of the plug 3b and the plate 15 is obtained by attaching an annular fold 11b carried by the plate 15 on a peripheral groove 12b arranged on the plug.
  • the positioning of the plate is carried out by means of a press in a manner similar to that described previously for the front plug 3a.
  • the plug 3b has, like the front plug 3a, an annular groove 13b disposed opposite the internal surface of the envelope 2. And the envelope 2 has punctual deformations 14, regularly distributed angularly, which secure the rear plug 3b and of the envelope.
  • the front plug 3a is also equipped with a metallic reinforcement means which is a ring 5 comprising a peripheral cylindrical part 6 and an external rim 7 and covering a front end 8 of the plug which s extends out of envelope 2.
  • the end 21a of the casing 2 abuts on a shoulder 22a arranged on the ring 5.
  • the annular space 20a is disposed on the plug 3a and substantially opposite the end 21a of the casing 2
  • This space is delimited by two annular surfaces 23a, 24a substantially flat and normal to the axis of the ammunition, one (23a) carried by the reinforcement means 5 and the other (24a) carried by the plug 3a.
  • annular space is then simply defined by an appropriate choice of the respective lengths of the ring 5 and of the plug 3a.
  • This arrangement also makes it possible to distribute the deformation of the material of the ring over a larger surface and in an axial direction.
  • the length of the shoulder 22a arranged on the ring will be chosen so that, when firing after displacement of the plugs by the action of the gas pressure, the case is still slightly engaged on the reinforcing ring.
  • annular cavity 9 is arranged between the front plug 3a and the reinforcing ring 5.
  • connection of the plug 3a and the reinforcement ring 5 is obtained by attaching an annular fold 11a carried by the ring 5 on a peripheral groove 12a arranged on the plug.
  • the relative conicities of the annular fold 11a and of the peripheral groove 12a are here slightly different, which makes it possible to arrange a conical clearance 25 between the ring 5 and the plug 3a, clearance which communicates with the annular space 20a.
  • This game has the same function as the annular cavity 9 and also makes it possible to absorb the axial and radial deformations of the plug caused by the passage of the projectile during firing.
  • the rear plug 3b is equipped with a metallic reinforcement means which is a plate 15 having a bottom 16 and a peripheral cylindrical part 17.
  • the end 21b of the casing 2 abuts on a shoulder 22b arranged on the plate 15.
  • An annular space 20b is arranged on the rear plug 3b substantially facing one end 21b of the casing 2 which comes into contact with the reinforcing plate 15.
  • This space is also delimited by two annular surfaces 23b, 24b substantially flat and normal to the axis of the ammunition, one (23b) carried by the reinforcing plate 15 and the other (24b) carried by the plug 3b .
  • connection of the plug 3b and the plate 15 is obtained by attaching an annular fold 11b carried by the plate 15 on a peripheral groove 12b arranged on the plug. No tapered clearance is provided between fold and groove.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Fluid-Damping Devices (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Jib Cranes (AREA)
  • Closures For Containers (AREA)

Claims (8)

  1. Hülse für Munition (1) teleskopartig und bestehend aus einem zylindrischen Mantel (2) aus Kunststoff, der an jedem Ende einen Stopfen (3a,3b) aus Kunststoff mit einem metallischen Verstärkungsmittel (5,15) trägt, das einen peripheren zylindrischen Teil (6,17) und einen externen Wulst (7) oder einen Boden (16) aufweist, wobei das Verstärkungsmittel das eine Ende (8,18) des Stopfens (3a,3b) abdeckt und aus dem Mantel (2) hervorsteht und die Hülse dadurch gekennzeichnet ist, daß sie mindestens einen Ringraum (20a,20b) auf dem Stopfen (3a,3b) in der Nähe eines Endes (21a,21b) des Mantels (2) in Berührung mit dem Verstärkungsmittel (5,15) aufweist, wobei der Raum zum Absorbieren der Verformung des Stopfens beim Abschießen bestimmt ist und es ermöglicht, die Bildung eines Wulstes zu vermeiden.
  2. Hülse gemäß dem Anspruch 1, gekennzeichnet dadurch, daß der Ringraum von 2 ringförmigen in etwa geraden Flächen abgegrenzt wird, die zur Munitionsachse senkrecht stehen, von welchen eine vom Verstärkungsmittel und die andere vom Stopfen getragen wird.
  3. Hülse gemäß einem der Ansprüche 1 oder 2, gekennzeichnet dadurch, daß das Verstärkungsmittel (5,15) mit dem Stopfen (3a,3b) durch Aufhängen eines Ringfalzes (11a,11b) auf dem Verstärkungsmittel in einer peripheren Rille (12a,12b) des Stopfens fest verbunden ist.
  4. Hülse gemäß einem der Ansprüche 1 bis 3, gekennzeichnet dadurch, daß die Verstärkungsmittel (5,15) einen Außendurchmesser aufweisen, der mindestens gleich groß ist wie der Nenndurchmesser des Mantels (2) bei der maximalen Einsatztemperatur der Hülse.
  5. Hülse gemäß einem der Ansprüche 1 bis 4, gekennzeichnet dadurch, daß zwischen dem vorderen Stopfen (3a) und dem Verstärkungsring (5) mindestens ein innerer ringförmiger Hohlraum (9) angebracht ist, so daß die axialen und radialen Verformungen des Stopfens absorbiert werden, die durch den Durchgang des Geschosses beim Abschuß hervorgerufen werden.
  6. Hülse gemäß einem der Ansprüche 1 bis 5, gekennzeichnet dadurch, daß mindestens ein Stopfen (3a,3b) eine periphere ringförmige Hohlkehle (13,13b) aufweist, die gegenüber dem Mantel (2) liegen soll, und dadurch, daß der Mantel so verformt wird, daß er in die Hohlkehle des Stopfens eindringt, um diesen fest mit dem Mantel zu verbinden.
  7. Hülse gemäß dem Anspruch 6, gekennzeichnet dadurch, daß die Verformung punktweise (14) mit regelmäßiger winkeliger Verteilung durchgeführt wird.
  8. Teleskopartige Munition mit einer Hülse gemäß einem der Ansprüche 1 bis 7, in deren Innerem ein Geschoß (4), eine Treibladung und eine Zündvorrichtung (19) für die Treibladung angebracht sind.
EP94909162A 1993-03-12 1994-03-08 Hülse für teleskopische munitionen Expired - Lifetime EP0640205B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9302895A FR2702555B1 (fr) 1993-03-12 1993-03-12 Etui pour une munition de type télescopée.
FR9302895 1993-03-12
PCT/FR1994/000253 WO1994020814A1 (fr) 1993-03-12 1994-03-08 Etui pour munition de type telescopee

Publications (2)

Publication Number Publication Date
EP0640205A1 EP0640205A1 (de) 1995-03-01
EP0640205B1 true EP0640205B1 (de) 1996-07-17

Family

ID=9444916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94909162A Expired - Lifetime EP0640205B1 (de) 1993-03-12 1994-03-08 Hülse für teleskopische munitionen

Country Status (6)

Country Link
US (1) US5433148A (de)
EP (1) EP0640205B1 (de)
AT (1) ATE140532T1 (de)
DE (1) DE69400306T2 (de)
FR (1) FR2702555B1 (de)
WO (1) WO1994020814A1 (de)

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USD892258S1 (en) 2019-03-12 2020-08-04 True Velocity Ip Holdings, Llc Ammunition cartridge nose having an angled shoulder
USD891567S1 (en) 2019-03-12 2020-07-28 True Velocity Ip Holdings, Llc Ammunition cartridge nose having an angled shoulder
USD891568S1 (en) 2019-03-12 2020-07-28 True Velocity Ip Holdings, Llc Ammunition cartridge nose having an angled shoulder
WO2020197868A2 (en) 2019-03-19 2020-10-01 True Velocity Ip Holdings, Llc Methods and devices metering and compacting explosive powders
USD894320S1 (en) 2019-03-21 2020-08-25 True Velocity Ip Holdings, Llc Ammunition Cartridge
WO2021040903A2 (en) 2019-07-16 2021-03-04 True Velocity Ip Holdings, Llc Polymer ammunition having an alignment aid, cartridge and method of making the same

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BE694881A (de) * 1966-03-03 1967-08-14
DE1961307A1 (de) * 1969-12-06 1971-06-16 Dynamit Nobel Ag Schrotpatronenhuelse aus thermoplastischem Kunststoff
US3897729A (en) * 1970-05-02 1975-08-05 Schirnecker Hans Ludwig Cartridge for firearms
US3842739A (en) * 1973-05-31 1974-10-22 Remington Arms Co Inc Metallic mouth for a plastic cartridge case
CH611703A5 (en) * 1976-02-17 1979-06-15 Kupag Kunststoff Patent Verwal Cartridge for firearms, especially rifles
US4691638A (en) * 1985-04-30 1987-09-08 Honeywell Inc. Cased telescoped ammunition
US5127331A (en) * 1991-03-25 1992-07-07 Olin Corporation Reduced recoil compression formed shotshell casing
FR2679991B1 (fr) * 1991-07-31 1993-10-29 Giat Industries Perfectionnements apportes a une munition en particulier du type telescope.

Also Published As

Publication number Publication date
FR2702555B1 (fr) 1995-04-28
DE69400306T2 (de) 1997-02-20
FR2702555A1 (fr) 1994-09-16
US5433148A (en) 1995-07-18
WO1994020814A1 (fr) 1994-09-15
DE69400306D1 (de) 1996-08-22
ATE140532T1 (de) 1996-08-15
EP0640205A1 (de) 1995-03-01

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