EP1204840A1 - Entirely combustible inductive primer - Google Patents

Entirely combustible inductive primer

Info

Publication number
EP1204840A1
EP1204840A1 EP00947974A EP00947974A EP1204840A1 EP 1204840 A1 EP1204840 A1 EP 1204840A1 EP 00947974 A EP00947974 A EP 00947974A EP 00947974 A EP00947974 A EP 00947974A EP 1204840 A1 EP1204840 A1 EP 1204840A1
Authority
EP
European Patent Office
Prior art keywords
combustible
coil
primer
inductive
lighter
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.)
Granted
Application number
EP00947974A
Other languages
German (de)
French (fr)
Other versions
EP1204840B1 (en
Inventor
Heinz Kern
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.)
RWS GmbH
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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 DE19956635A external-priority patent/DE19956635A1/en
Application filed by Dynamit Nobel AG, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Publication of EP1204840A1 publication Critical patent/EP1204840A1/en
Application granted granted Critical
Publication of EP1204840B1 publication Critical patent/EP1204840B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/58Electric firing mechanisms
    • F41A19/63Electric firing mechanisms having means for contactless transmission of electric energy, e.g. by induction, by sparking gap
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/12Compositions or products which are defined by structure or arrangement of component of product having contiguous layers or zones
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06CDETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C9/00Chemical contact igniters; Chemical lighters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02Cartridges, i.e. cases with charge and missile
    • F42B5/08Cartridges, i.e. cases with charge and missile modified for electric ignition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00Details of fuzes
    • F42C19/08Primers; Detonators
    • F42C19/12Primers; Detonators electric

Definitions

  • the invention relates to a pyrotechnic lighter for igniting propellant powder for caseless ammunition with an ignition element and a coil, in which the energy required for triggering is transmitted by electromagnetic (inductive) means.
  • the object of the invention is therefore to construct a production-technically uncomplicated and inexpensive, fully combustible, inductive lighter, which has no residues which damage the weapon function and, in principle, can be used universally in all common weapon calibres.
  • this object is achieved in that the ignition element and the coil are located on a common flat combustible or consumable carrier material.
  • the entire carrier material of the igniter consists of combustible or consumable substances, such as paper or nitrocellulose.
  • a spatial cylindrical coil is obtained, and the remaining ends of the conductor tracks form the connection surfaces (contact points) of the ignition bridge.
  • the electrical conductor tracks are expediently applied to the carrier material in a screen printing process and consist of silver or copper conductive paste.
  • the inductive igniter can be columnar or flat, consisting of a combustible or consumable electrical igniter and an induction coil with several turns and any external geometry, which is built or embedded on a flat single or multi-layer, combustible, insulating carrier material and the electrically conductive coil material can also be designed to be combustible or edible.
  • the entire inductive igniter is applied in one or more layers to a flexible combustible paper film or nitrocellulose film or another combustible carrier layer, the entire electrical conductor or conductor tracks being made of, for example, hardened silver or copper conductive paste or another metal compound or non-metallic combustible or edible conductor material, which is preferably applied by screen printing or another application method.
  • the inductive igniter is constructed in one piece and only functions as a result of reshaping and adding glow wire, conductive glue points and primer and is completely combustible or consumable. Further features of the invention emerge from the figures, which are described below.
  • Fig. 3 shows the finished lighter
  • Fig. 4 shows an alternative example of a flat lighter.
  • FIG. 1 shows a production example for a cylindrical receiving coil on flammable carrier material 5 and conductor tracks made of printed conductive paste with, for example, three turns in the non-plated-through state. Visible are the coil turns 1, the through-contact points 2, the connection point of the ignition glow wire 3 and the glow wire 4.
  • the ignition glow wire can be contacted with the connection surfaces 3, for example by gluing or bonding. Geometry, conductor cross-section and number of turns can be varied within a wide range.
  • Figure 2 shows the manufacturing process for reaching a solenoid by folding the coil ends and then contacting the coil ends 6 with the via points 7, advantageously with electrically conductive adhesive.
  • the stacked paper ends can be fixed with NC glue.
  • Figure 3 shows the igniter ready for installation.
  • the via points 7 are visible through whose center bore the coil ends 6 are contacted.
  • the substrate around the pads 3 can be due to its flexibility in one be fixed in a suitable position in the ignition chain and connected to a corresponding combustible body for receiving the igniter z. B. by gluing.
  • FIG. 4 shows a production example for a flat-lying receiving coil on flammable carrier material 1 and conductor tracks made of printed conductive paste with, for example, ten turns. Visible are the coil turns 2, the via points 3, the conductor tracks on the back 4 of the carrier material and the connection point of the ignition filament 5. Geometry, conductor cross section and number of turns can be varied within a wide range.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Air Bags (AREA)

Abstract

A pyrotechnical primer for igniting propellant powder for sleeveless ammunition comprises an igniting element ( 4 ) and a coil ( 1 ). The energy required for triggering is transmitted in an electromagnetic manner (inductively). The inductive primer is cost-effective, entirely combustible, easy to produce and is not provided with residues that damage the functioning of the weapons. The primer has a base construction such that the primer can be used in all conventional weapons calibres. To this end, the ignition element ( 4 ) and the coil ( 1 ) are located on a mutual, flat, combustible consumable or support material ( 5 ).

Description

Voll verbrennbarer induktiver Anzünder Fully combustible induction lighter
Die Erfindung betrifft einen pyrotechnischen Anzünder zur Anzündung von Treibladungspulver für hülsenlose Munition mit einem Anzündelement und einer Spule, bei welchem die zur Auslösung benötigte Energie auf elektromagnetischem Wege (induktiv) übertragen wird.The invention relates to a pyrotechnic lighter for igniting propellant powder for caseless ammunition with an ignition element and a coil, in which the energy required for triggering is transmitted by electromagnetic (inductive) means.
Die in den letzten Jahren verstärkte Forderung nach Einsatz von hülsenloser Munition, führte vermehrt zu Lösungsansätzen für Anzündsysteme, die nach dem Prinzip der berührungslosen Energieübertragung in den Verbrennungsraum einer Waffe arbeiten. Prinzipielle Lösungen der induktiven Anzündung wurden in der Vergangenheit aufgezeigt und die Machbarkeit an diversen Waffensystemen nachgewiesen.The increased demand for the use of caseless ammunition in recent years has increasingly led to approaches for ignition systems that work on the principle of contactless energy transfer into the combustion chamber of a weapon. Basic solutions for inductive firing have been demonstrated in the past and the feasibility of various weapon systems has been demonstrated.
Hauptproblem bei den bisherigen Ausführungsforme induktiver Anzünder sind die nicht verbrennbaren Komponenten der Empfangsspule sowie des elektrischen Anzündelementes. Dies um so mehr bei relativ kleinem Kaliberdurchmesser, da hier unverbrannte Reste des Anzünders im Patronenlager bzw. im Rohr waffenschädigende Rückstände bilden können.The main problem with the previous embodiments of inductive igniters are the non-combustible components of the receiving coil and of the electrical igniter. This is all the more the case with a relatively small caliber diameter, since unburned remnants of the igniter in the cartridge chamber or in the tube can form residues which damage the weapon.
Aufgabe der Erfindung ist es daher, einen fertigungstechnisch unkomplizierten und kostengünstigen, vollverbrennbaren, induktiven Anzünder aufzubauen, welcher keine waffenfunktionsschädigende Rückstände aufweist und vom prinzipiellen Aufbau her universell bei allen gängigen Waffenkalibern eingesetzt werden kann.The object of the invention is therefore to construct a production-technically uncomplicated and inexpensive, fully combustible, inductive lighter, which has no residues which damage the weapon function and, in principle, can be used universally in all common weapon calibres.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß sich Anzündelement und Spule auf einem gemeinsamen flachen brennbaren oder verzehrbaren Tägermaterial befinden. Erfindungsgemäß besteht das gesamte Trägermaterial des Anzünders aus brennbaren oder verzehrbaren Stoffen, wie z.B. Papier oder Nitrocellulose.According to the invention this object is achieved in that the ignition element and the coil are located on a common flat combustible or consumable carrier material. According to the invention, the entire carrier material of the igniter consists of combustible or consumable substances, such as paper or nitrocellulose.
In bevorzugter Ausführungsform ergibt sich durch Übereinanderlegen der auf einer Ebene befindlichen Leiterenden (Leiterbahnenden) und durch deren Kontaktierung eine räumliche Zylinderspule und dabei bilden die verbleibenden Enden der Leiterbahnen die Anschlußflächen (Kontaktierungsstellen) der Zündbrücke.In a preferred embodiment, by superimposing the conductor ends located on one level (conductor track ends) and by contacting them, a spatial cylindrical coil is obtained, and the remaining ends of the conductor tracks form the connection surfaces (contact points) of the ignition bridge.
Die elektrischen Leiterbahnen sind zweckmäßigerweise im Siebdruckverfahren auf das Trägermaterial aufgebracht und bestehen aus Silber- oder Kupferleitpaste.The electrical conductor tracks are expediently applied to the carrier material in a screen printing process and consist of silver or copper conductive paste.
Der induktive Anzünder kann säulenförmig oder flach ausgeführt sein, bestehend aus einem verbrennbaren oder verzehrbaren elektrischen Anzündelement und einer Induktionsspule mit mehreren Windungen und beliebiger Außengeometrie, welche auf einem flachen ein- oder mehrlagigen, verbrennbaren, isolierenden Trägermaterial aufgebaut oder eingebettet ist und das elektrisch leitfähige Spulenmaterial ebenfalls verbrennbar oder verzehrbar ausgelegt sein kann.The inductive igniter can be columnar or flat, consisting of a combustible or consumable electrical igniter and an induction coil with several turns and any external geometry, which is built or embedded on a flat single or multi-layer, combustible, insulating carrier material and the electrically conductive coil material can also be designed to be combustible or edible.
Vorteilhafterweise wird der gesamte induktive Anzünder in einer Ebene ein- oder mehrschichtig auf einer flexiblen brennbaren Papierfolie oder Nitrocellulosefolie oder einer anderen brennbaren Trägerschicht aufgebracht, wobei die gesamte elektrische Leiterführung bzw. Leiterbahnen aus beispielsweise gehärteter Silber- oder Kupferleitpaste oder einer anderen Metallverbindung oder nichtmetallischem verbrennbarem oder verzehrbarem Leitermaterial besteht, welches vorzugsweise im Siebdruckverfahren oder einem anderen Auftrageverfahren aufgebracht wird.Advantageously, the entire inductive igniter is applied in one or more layers to a flexible combustible paper film or nitrocellulose film or another combustible carrier layer, the entire electrical conductor or conductor tracks being made of, for example, hardened silver or copper conductive paste or another metal compound or non-metallic combustible or edible conductor material, which is preferably applied by screen printing or another application method.
Der Vorteil der vorgenannten Erfindung liegt darin, daß der induktive Anzünder einteilig aufgebaut ist und nur durch Umformen und Hinzufügen von Glühdraht, Leitkleberpunkten und Zündsatz seine Funktion erhält und komplett verbrennbar oder verzehrbar ist. Weitere Merkmale der Erfindung ergeben sich aus den Figuren, die nachfolgend beschrieben sind.The advantage of the above-mentioned invention is that the inductive igniter is constructed in one piece and only functions as a result of reshaping and adding glow wire, conductive glue points and primer and is completely combustible or consumable. Further features of the invention emerge from the figures, which are described below.
Es zeigt:It shows:
Fig. 1 ein Fertigungsbeispiel für einen erfindungsgemäßen Anzünder,1 shows a manufacturing example for a lighter according to the invention,
Fig. 2 den zugehörigen Fertigungsvorgang,2 the associated manufacturing process,
Fig. 3 den fertigen Anzünder undFig. 3 shows the finished lighter and
Fig. 4 ein alternatives Beispiel für einen ebenen Anzünder.Fig. 4 shows an alternative example of a flat lighter.
Figur 1 zeigt ein Fertigungsbeispiel für eine zylindrische Empfangsspule auf brennbarem Trägermaterial 5 und Leiterbahnen aus gedruckter Leitpaste mit beispielsweise drei Windungen im nicht durchkontaktierten Zustand. Sichtbar sind die Spulenwindungen 1 , die Durchkontaktierungspunkte 2, die Anschlußstelle des Zünd- Glühdrahtes 3 und der Glühdraht 4. Der Zünd-Glühdraht kann beispielsweise durch Kleben oder Bonden mit den Anschlußflächen 3 kontaktiert werden. Geometrie, Leiterquerschnitt und Windungszahl können in großem Rahmen variiert werden.FIG. 1 shows a production example for a cylindrical receiving coil on flammable carrier material 5 and conductor tracks made of printed conductive paste with, for example, three turns in the non-plated-through state. Visible are the coil turns 1, the through-contact points 2, the connection point of the ignition glow wire 3 and the glow wire 4. The ignition glow wire can be contacted with the connection surfaces 3, for example by gluing or bonding. Geometry, conductor cross-section and number of turns can be varied within a wide range.
Figur 2 zeigt den Fertigungsvorgang zum Erreichen einer Zylinderspule durch Zusammenlegen der Spulenenden und anschließender Kontaktierung der Spulenenden 6 mit den Durchkontaktierungspunkten 7, vorteilhafterweise mit elektrisch leitfähigem Kleber. Zusätzlich können die übereinanderliegenden Papierenden mit NC-Kleber fixiert werden.Figure 2 shows the manufacturing process for reaching a solenoid by folding the coil ends and then contacting the coil ends 6 with the via points 7, advantageously with electrically conductive adhesive. In addition, the stacked paper ends can be fixed with NC glue.
Figur 3 zeigt den Anzünder einbaufertig. Sichtbar sind die Durchkontaktierungspunkte 7 durch deren Mittenbohrung die Spulenenden 6 kontaktiert werden. Das Trägermaterial um die Anschlußflächen 3 kann durch seine Flexibilität in einer geeigneten Position in der Zündkette fixiert werden und mit einem entsprechenden brennbarem Körper zur Aufnahme des Zündstoffes verbunden werden z. B. durch Kleben.Figure 3 shows the igniter ready for installation. The via points 7 are visible through whose center bore the coil ends 6 are contacted. The substrate around the pads 3 can be due to its flexibility in one be fixed in a suitable position in the ignition chain and connected to a corresponding combustible body for receiving the igniter z. B. by gluing.
Figur 4 zeigt ein Fertigungsbeispiel für eine flachliegende Empfangsspule auf brennbarem Trägermaterial 1 und Leiterbahnen aus gedruckter Leitpaste mit beispielsweise zehn Windungen. Sichtbar sind die Spulenwindungen 2, die Durchkontaktierungspunkte 3, die Leiterbahnen auf der Rückseite 4 des Trägermaterials und die Anschlußstelle des Zünd-Glühdrahtes 5. Geometrie, Leiterquerschnitt und Windungszahl können in großem Rahmen variiert werden.FIG. 4 shows a production example for a flat-lying receiving coil on flammable carrier material 1 and conductor tracks made of printed conductive paste with, for example, ten turns. Visible are the coil turns 2, the via points 3, the conductor tracks on the back 4 of the carrier material and the connection point of the ignition filament 5. Geometry, conductor cross section and number of turns can be varied within a wide range.
Funktionsbeschreibungfunction Description
Bei der Beaufschlagung einer waffenseitigen Primärspule mit einem Stromimpuls wird ein magnetisches Wechselfeld erzeugt und in der Spule des induktiven Anzündelementes eine Spannung induziert, die durch den elektrischen Widerstand des Glühdrahtes einen Strom treibt, welcher durch die Umsetzung in Joulsche Wärme eine Zündung des Anzündsatzes bewirkt und damit Treibladungspulver anzündet. Hierbei werden alle Komponenten des Anzünders verbrannt oder verzehrt. When a current pulse is applied to a primary coil on the weapon side, an alternating magnetic field is generated and a voltage is induced in the coil of the inductive ignition element, which drives a current through the electrical resistance of the filament, which, by converting it into Joule heat, ignites the ignition charge and thus Ignites propellant powder. Here, all components of the lighter are burned or consumed.

Claims

Patentansprüche claims
1. Pyrotechnischer Anzünder zur Anzündung von Treibladungspulver für hülsenlose Munition mit einem Anzündelement (4) und einer Spule (1 ), bei welchem die zur Auslösung benötigte Energie auf elektromagnetischem Wege (induktiv) übertragen wird, dadurch gekennzeichnet, daß sich1. Pyrotechnic lighter for igniting propellant powder for caseless ammunition with an ignition element (4) and a coil (1), in which the energy required for triggering is transmitted by electromagnetic means (inductive), characterized in that
Anzündelement (4) und Spule (1 ) auf einem gemeinsamen flachen brennbaren oder verzehrbaren Trägermaterial (5) befinden.Ignition element (4) and coil (1) are on a common flat combustible or consumable carrier material (5).
2. Anzünder nach Anspruch 1 , dadurch gekennzeichnet, daß das gesamte Trägermaterial (5) des Anzünders aus brennbaren oder verzehrbaren Stoffen, wie z. B. Papier oder Nitrocellose besteht.2. lighter according to claim 1, characterized in that the entire carrier material (5) of the lighter from combustible or consumable substances, such as. B. paper or nitrocellose.
3. Anzünder nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sich durch Übereinanderlegen der auf einer Ebene befindlichen Leiterenden und durch deren Kontaktierung eine räumliche Zylinderspule ergibt und dabei die verbleibenden Enden der Leiterbahnen die Anschlußflächen der Zündbrücke (4) bilden.3. Igniter according to claim 1 or 2, characterized in that a spatial solenoid coil is obtained by superimposing the conductor ends located on one level and by contacting them, and the remaining ends of the conductor tracks form the connection surfaces of the ignition bridge (4).
4. Anzünder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die elektrischen Leiterbahnen (1) vorzugsweise im Siebdruckverfahren auf das Trägermaterial (5) aufgebracht sind und aus Silber- oder Kupferleitpaste bestehen. 4. Igniter according to one of claims 1 to 3, characterized in that the electrical conductor tracks (1) are preferably applied to the carrier material (5) by screen printing and consist of silver or copper conductive paste.
EP00947974A 1999-07-30 2000-07-12 Entirely combustible inductive primer Expired - Lifetime EP1204840B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19936095 1999-07-30
DE19936095 1999-07-30
DE19956635A DE19956635A1 (en) 1999-07-30 1999-11-25 Fully combustible induction lighter
DE19956635 1999-11-25
PCT/EP2000/006607 WO2001009563A1 (en) 1999-07-30 2000-07-12 Entirely combustible inductive primer

Publications (2)

Publication Number Publication Date
EP1204840A1 true EP1204840A1 (en) 2002-05-15
EP1204840B1 EP1204840B1 (en) 2003-03-05

Family

ID=26054435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00947974A Expired - Lifetime EP1204840B1 (en) 1999-07-30 2000-07-12 Entirely combustible inductive primer

Country Status (5)

Country Link
US (1) US6962112B1 (en)
EP (1) EP1204840B1 (en)
AT (1) ATE233890T1 (en)
CA (1) CA2380442C (en)
WO (1) WO2001009563A1 (en)

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Publication number Priority date Publication date Assignee Title
US10254090B1 (en) 2013-03-14 2019-04-09 University Of Central Florida Research Foundation Layered energetic material having multiple ignition points
US9464874B1 (en) * 2013-03-14 2016-10-11 Spectre Materials Sciences, Inc. Layered energetic material having multiple ignition points
US20150345922A1 (en) * 2014-05-28 2015-12-03 Baker Hughes Incorporated Igniter for Downhole Use Having Flame Control
US10882799B2 (en) 2014-09-10 2021-01-05 Spectre Materials Sciences, Inc. Primer for firearms and other munitions
US11112222B2 (en) 2019-01-21 2021-09-07 Spectre Materials Sciences, Inc. Propellant with pattern-controlled burn rate
IL305237A (en) 2021-02-16 2023-10-01 Spectre Mat Sciences Inc Primer for firearms and other munitions

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FR2438820A1 (en) * 1978-10-13 1980-05-09 France Etat ELECTRIC DEVICE FOR IGNITION OF A PYROTECHNIC SUBSTANCE
US4271370A (en) * 1979-09-21 1981-06-02 Litton Systems, Inc. Double air gap printed circuit rotor
DE3231369C1 (en) * 1982-08-24 1984-01-05 Dynamit Nobel Ag, 5210 Troisdorf Secondary coil for inductive igniters
NZ207264A (en) * 1984-02-23 1988-10-28 New Zealand Dev Finance Flexible printed circuit coil
US4715894A (en) * 1985-08-29 1987-12-29 Techno Instruments Investments 1983 Ltd. Use of immersion tin and tin alloys as a bonding medium for multilayer circuits
EP0526389B1 (en) * 1991-06-29 1997-01-29 Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Device for launching ammunition
US5600293A (en) * 1994-06-14 1997-02-04 The United States Of America As Represented By The Secretary Of The Army Integrated magnetic exploding foil initiator fire set
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DE19706605A1 (en) * 1997-02-20 1998-08-27 Dynamit Nobel Ag Secondary coil for inductive ignition
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Title
See references of WO0109563A1 *

Also Published As

Publication number Publication date
CA2380442A1 (en) 2001-02-08
US6962112B1 (en) 2005-11-08
ATE233890T1 (en) 2003-03-15
WO2001009563A1 (en) 2001-02-08
EP1204840B1 (en) 2003-03-05
CA2380442C (en) 2009-01-13

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