WO2001078949A1 - Propellant cartridge - Google Patents

Propellant cartridge Download PDF

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Publication number
WO2001078949A1
WO2001078949A1 PCT/EP2001/003387 EP0103387W WO0178949A1 WO 2001078949 A1 WO2001078949 A1 WO 2001078949A1 EP 0103387 W EP0103387 W EP 0103387W WO 0178949 A1 WO0178949 A1 WO 0178949A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
propellant
ignition
cartridge
cartridge according
Prior art date
Application number
PCT/EP2001/003387
Other languages
German (de)
French (fr)
Inventor
Heinz Riess
Erich Muskat
Original Assignee
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 DE10103393A external-priority patent/DE10103393A1/en
Application filed by Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik filed Critical Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik
Priority to AU2001256218A priority Critical patent/AU2001256218A1/en
Publication of WO2001078949A1 publication Critical patent/WO2001078949A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/16—Cartridges specially adapted for impact tools; Cartridge and bolts units
    • B25C1/163—Cartridges
    • 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
    • F42B5/08—Cartridges, i.e. cases with charge and missile modified for electric ignition

Definitions

  • the invention relates to a propellant cartridge for pyrotechnic drives, with a cartridge container containing a propellant, which is closed with a cover, and in particular to a propellant cartridge for pyrotechnically operated setting tools, such as firing guns or staplers.
  • Propellant cartridges are used in pyrotechnic setting devices, which are usually equipped with impact fuses.
  • a metallic cartridge container is provided, which is closed with a cover.
  • the propellant charge is ignited by striking a previously struck firing pin or by using a friction agent.
  • the present invention is based on the object of creating a propellant cartridge which can be triggered in a simple manner under defined ignition conditions and which ensures reliable triggering.
  • the cover carries an ignition bridge that can be heated by electricity and is connected to a starting set. In the event of a trigger, a current is sent through the ignition bridge and this is heated to the ignition temperature of the ignition charge by a controlled current flow which flows through a resistance bridge of the ignition bridge.
  • the propellant cartridge is insensitive to impact and not exposed to the risk of contamination.
  • the cartridge body and cover can be made from a relatively simple and inexpensive material.
  • the ignition bridge preferably contains a resistance bridge which is arranged between two contact electrodes. It can consist of a coating on the inside of the cover. Such a coating need not be self-supporting. It can be applied by gluing, printing, vapor deposition or electrolytic coating. It is possible to first apply the coating to the cover over a large area and then to carry out the structure of the ignition bridge by removing material, for example by etching or laser treatment. Exemplary embodiments of the invention are explained in more detail below with reference to the drawings.
  • FIG. 1 shows a first embodiment of the propellant cartridge, inserted into the cartridge bearing of a setting tool
  • FIG. 2 is a top view of the cartridge of FIG. 1;
  • FIG. 3 shows a second embodiment of the cartridge with holes for inserting contact elements
  • FIG. 4 is a top view of the cartridge of FIG. 3;
  • Fig. 5 shows a third embodiment of the cartridge with an ignition bridge made of resistance wire and
  • FIG. 6 is a top view of the cartridge of FIG. 5.
  • the cartridge of FIGS. 1 and 2 has a cartridge container 1, which is generally cup-shaped or conical and is filled with a powdered propellant 2.
  • the opening 16 of the cartridge container is provided in a wall 15, which here has a rectangular shape.
  • the top wall 15 and the opening 16 are closed by a cover 3 which is sealingly connected to the top wall 15.
  • the cartridge container 1 and the cover 3 are made of non-conductive material, in particular plastic.
  • the top wall 15 of numerous cartridge containers can consist of an endless belt which is cut off in sections in order to separate the individual cartridge containers.
  • the cover 3 can consist of an endless belt.
  • the ignition bridge 4 is located on the underside of the cover 3.
  • This consists of an electrically conductive coating that forms two strip-shaped, mutually aligned contact electrodes 17, 18, which are connected by a narrower resistance web 19.
  • the ignition set 5 consists of an easily flammable pyrotechnic material. For its part, it is in active contact with the propellant 2. By heating the resistance web 19, the ignition charge 5 is first ignited, which in turn then ignites the propellant.
  • the contact electrodes 17, 18 extend into the area of the cover 3, which lies on the top wall 15.
  • the cartridge bearing 20 contains a recess 21 adapted to the shape and size of the cartridge 1, from which a propellant channel 22 extends.
  • the recess 21 is closed with a cover 23.
  • the cover 23 contains piercing contacts 24, 25 which protrude outwards and pierce through the cover 3 into the top wall 15 when the cover is closed.
  • the piercing contacts 24, 25 are electrically conductive and they are connected to a power source (not shown) in the cover. The current can be switched on by actuating a switch (also not shown). The contact of the current source to the contact electrodes 17, 18 of the ignition bridge 4 is established by the piercing contacts 24, 25.
  • the ignition bridge 4 consists of a coating on the underside of the cover 3.
  • FIGS. 3 and 4 differs from the first exemplary embodiment in that contact elements 26, 27 are provided on the cartridge bearing 20 (and not on the cover 23). These contact elements protrude Holes 13 in the upper wall 15 of the cartridge container and their ends abut against the contact electrodes of the ignition bridge 4. The contact of the contact elements 26, 27 with the ignition bridge 4 is produced in a non-destructive manner.
  • FIGS. 5 and 6 largely corresponds to that of FIGS. 3 and 4.
  • the ignition bridge 4 consists of a wire that tapers in the area of the resistance web 19.

Abstract

The propellant cartridge is provided with a cartridge container (1) which contains a powdery propellant (2) and is closed by a cover (3). An electric ignition bridge (4) is disposed on the lower side of the cover (3). Said ignition bridge is connected to an ignition set (5) . The ignition bridge is contacted by means of external contact elements (24, 25) associated with the support of the cartridge. As a result, defined and controlled ignition of the propellant occurs.

Description

Treibmittelkartusche Propellant cartridge
Die Erfindung betrifft eine Treibmittelkartusche für pyrotechnische Antriebe, mit einem ein Treibmittel enthaltenden Kartuschenbehalter, der mit einer Abdeckung verschlossen ist, und insbesondere eine Treibmittelkartusche für pyrotechnisch betriebene Setzgeräte, wie Boizenschußgeräte oder Heftgeräte.The invention relates to a propellant cartridge for pyrotechnic drives, with a cartridge container containing a propellant, which is closed with a cover, and in particular to a propellant cartridge for pyrotechnically operated setting tools, such as firing guns or staplers.
In pyrotechnischen Setzgeräten werden Treibmittelkartuschen benutzt, die üblicherweise mit Schlagzündern ausgestattet sind. Hierbei ist ein metallischer Kartuschenbehalter vorgesehen, der mit einer Abdeckung verschlossen ist. Das Anzünden der Treibladung erfolgt durch Aufschlag eines zuvor gespannten Schlagbolzens oder durch Einsatz eines Reibmittels.Propellant cartridges are used in pyrotechnic setting devices, which are usually equipped with impact fuses. Here, a metallic cartridge container is provided, which is closed with a cover. The propellant charge is ignited by striking a previously struck firing pin or by using a friction agent.
In der (nicht vorveröffentlichten) Offenlegungsschrift DE 199 05 548 A1 , die gemäß § 3 PatG als Stand der Technik gilt, ist ein Kartuschenmagazin für pulverkraftbetriebene Setzgeräte beschrieben, bei dem eine Treibmitteikartusche an der Innenseite ihrer Abdeckung einen Anzundsatz enthält. Das Setzgerät ist mit zwei dornartigen Elektroden versehen, die die Abdeckung durchstoßen und mit einer Stromquelle verbunden sind. Der Anzundsatz besteht aus einem elektrisch leitenden, leicht erwärmbaren Material, das im Falle eines Stromflusses zwischen den Elektroden entzündet wird.In the (not prepublished) published application DE 199 05 548 A1, which is considered the state of the art according to § 3 PatG, describes a cartridge magazine for powder-operated setting tools, in which a propellant cartridge contains a starting set on the inside of its cover. The setting tool is provided with two mandrel-like electrodes that pierce the cover and one Power source are connected. The ignition set consists of an electrically conductive, easily heatable material that is ignited in the event of a current flow between the electrodes.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Treibmittelkartusche zu schaffen, die auf einfache Weise unter definierten Anzündbedinguπgeπ auslösbar ist und eine sichere Auslösung gewährleistet.The present invention is based on the object of creating a propellant cartridge which can be triggered in a simple manner under defined ignition conditions and which ensures reliable triggering.
Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den im Patentanspruch 1 angegebenen Merkmalen. Hiernach trägt die Abdeckung eine durch Strom heizbare Zündbrücke, die mit einem Anzundsatz in Verbindung steht. Im Auslösefall wird ein Strom durch die Zündbrücke geschickt und diese wird durch einen kontrollierten Stromfluß, der durch einen Widerstandssteg der Zündbrücke fließt, auf die Anzündtemperatur des Anzündsatzes erwärmt.This object is achieved according to the invention with the features specified in claim 1. According to this, the cover carries an ignition bridge that can be heated by electricity and is connected to a starting set. In the event of a trigger, a current is sent through the ignition bridge and this is heated to the ignition temperature of the ignition charge by a controlled current flow which flows through a resistance bridge of the ignition bridge.
Gegenüber den üblichen Schlagbolzenzündern besteht ein Vorteil darin, dass keine Spannkraft zum Spannen einer Schlagbolzenfeder erforderlich ist. Auch ein Reibmittel wird nicht benötigt. Die Treibmittelkartusche ist schlagunempfindlich und nicht der Gefahr von Verschmutzung ausgesetzt. Außerdem kann der Kartuschenkörper und die Abdeckung aus einem relativ einfachen und kostengünstigen Material hergestellt werden.One advantage over the conventional firing pin firers is that no tension force is required to tension a firing pin spring. There is also no need for an abrasive. The propellant cartridge is insensitive to impact and not exposed to the risk of contamination. In addition, the cartridge body and cover can be made from a relatively simple and inexpensive material.
Die Zündbrücke enthält vorzugsweise einen Widerstandssteg, der zwischen zwei Kontaktelektroden angeordnet ist. Sie kann aus einer Beschichtung der Innenseite der Abdeckung bestehen. Eine derartige Beschichtung braucht nicht selbsttragend zu sein. Sie kann durch Kleben, Drucken, Aufdampfen oder elektrolytische Beschichtung aufgebracht sein. Es ist möglich, die Beschichtung zunächst großflächig auf der Abdeckung anzubringen und danach die Struktur der Zündbrücke durch Materialentnahme, z.B. durch Ätzen oder Laserbehandlung, vorzunehmen. Im folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert.The ignition bridge preferably contains a resistance bridge which is arranged between two contact electrodes. It can consist of a coating on the inside of the cover. Such a coating need not be self-supporting. It can be applied by gluing, printing, vapor deposition or electrolytic coating. It is possible to first apply the coating to the cover over a large area and then to carry out the structure of the ignition bridge by removing material, for example by etching or laser treatment. Exemplary embodiments of the invention are explained in more detail below with reference to the drawings.
Es zeigen:Show it:
Fig. 1 eine erste Ausführungsform der Treibmittelkartusche, eingesetzt in das Kartuschenlager eines Setzgerätes,1 shows a first embodiment of the propellant cartridge, inserted into the cartridge bearing of a setting tool,
Fig. 2 eine Draufsicht auf die Kartusche von Fig. 1 ,2 is a top view of the cartridge of FIG. 1;
Fig. 3 eine zweite Ausführungsform der Kartusche mit Löchern zum Durchstecken von Kontaktelementen,3 shows a second embodiment of the cartridge with holes for inserting contact elements,
Fig. 4 eine Draufsicht auf die Kartusche von Fig. 3,4 is a top view of the cartridge of FIG. 3;
Fig. 5 eine dritte Ausführungsform der Kartusche mit einer Zündbrücke aus Widerstandsdraht undFig. 5 shows a third embodiment of the cartridge with an ignition bridge made of resistance wire and
Fig. 6 eine Draufsicht der Kartusche nach Fig. 5.6 is a top view of the cartridge of FIG. 5.
Die Kartusche der Fign. 1 und 2 weist einen Kartuschenbehalter 1 auf, der generell napfförmig oder kegelförmig ausgebildet ist und mit einem pulverförmigen Treibmittel 2 gefüllt ist. Die Öffnung 16 des Kartuschenbehälters ist in einer überwand 15 vorgesehen, die hier rechteckige Form hat. Die Oberwand 15 und die Öffnung 16 sind durch eine Abdeckung 3 verschlossen, die mit der Oberwand 15 abdichtend verbunden ist. Der Kartuschenbehalter 1 und die Abdeckung 3 bestehen aus nicht leitendem Material, insbesondere aus Kunststoff. Die Oberwand 15 zahlreicher Kartuschenbehalter kann aus einem Endlosband bestehen, das abschnittsweise abgetrennt wird, um die einzelnen Kartuschenbehalter zu separieren. In gleicher Weise kann auch die Abdeckung 3 aus einem Endlosband bestehen. An der Unterseite der Abdeckung 3 befindet sich die Zündbrücke 4. Diese besteht aus einer elektrisch leitenden Beschichtuπg, die zwei streifenförmige, zueinander ausgerichtete Kontaktelektroden 17,18 bildet, welche durch einen schmaleren Widerstandssteg 19 verbunden sind. Unter dem Widerstandssteg 19 befindet sich ein Anzundsatz 5 in Berührungskontakt mit dem Widerstandssteg. Der Anzundsatz 5 besteht aus einem leicht entzündbaren pyrotechnischen Material. Er steht seinerseits in Wirkkontakt mit dem Treibmittel 2. Durch Stromerwärmung des Widerstandsstegs 19 wird zunächst der Anzundsatz 5 angezündet, der seinerseits dann das Treibmittel zündet.The cartridge of FIGS. 1 and 2 has a cartridge container 1, which is generally cup-shaped or conical and is filled with a powdered propellant 2. The opening 16 of the cartridge container is provided in a wall 15, which here has a rectangular shape. The top wall 15 and the opening 16 are closed by a cover 3 which is sealingly connected to the top wall 15. The cartridge container 1 and the cover 3 are made of non-conductive material, in particular plastic. The top wall 15 of numerous cartridge containers can consist of an endless belt which is cut off in sections in order to separate the individual cartridge containers. In the same way, the cover 3 can consist of an endless belt. The ignition bridge 4 is located on the underside of the cover 3. This consists of an electrically conductive coating that forms two strip-shaped, mutually aligned contact electrodes 17, 18, which are connected by a narrower resistance web 19. Under the resistive web 19 there is a starting set 5 in contact with the resistive web. The ignition set 5 consists of an easily flammable pyrotechnic material. For its part, it is in active contact with the propellant 2. By heating the resistance web 19, the ignition charge 5 is first ignited, which in turn then ignites the propellant.
Die Kontaktelektroden 17,18 erstrecken sich bis in den Bereich der Abdeckung 3, der auf der Oberwand 15 liegt.The contact electrodes 17, 18 extend into the area of the cover 3, which lies on the top wall 15.
In Fig. 1 ist die Treibmittelkartusche im Kartuschenlager 20 eines Setzwerkzeugs dargestellt. Das Kartuschen lager 20 enthält eine der Form und Größe der Kartusche 1 angepasste Ausnehmung 21 , von der ein Treibmittelkanal 22 abgeht. Die Ausnehmung 21 ist mit einem Deckel 23 verschlossen. Der Deckel 23 enthält Stechkontakte 24,25, die nach außen abstehen und beim Schließen des Deckels durch die Abdeckung 3 in die Oberwand 15 einstechen. Die Stechkontakte 24,25 sind elektrisch leitend und sie sind an eine (nicht dargestellte) Stromquelle im Deckel angeschlossen. Durch Betätigung eines (ebenfalls nicht dargestellten) Schalters kann der Strom eingeschaltet werden. Durch die Stechkontakte 24,25 wird der Kontakt der Stromquelle zu den Kontaktelektroden 17,18 der Zündbrücke 4 hergestellt.1 shows the propellant cartridge in the cartridge bearing 20 of a setting tool. The cartridge bearing 20 contains a recess 21 adapted to the shape and size of the cartridge 1, from which a propellant channel 22 extends. The recess 21 is closed with a cover 23. The cover 23 contains piercing contacts 24, 25 which protrude outwards and pierce through the cover 3 into the top wall 15 when the cover is closed. The piercing contacts 24, 25 are electrically conductive and they are connected to a power source (not shown) in the cover. The current can be switched on by actuating a switch (also not shown). The contact of the current source to the contact electrodes 17, 18 of the ignition bridge 4 is established by the piercing contacts 24, 25.
Bei dem ersten Ausführungsbeispiel besteht die Zündbrücke 4 aus einer Beschichtung der Unterseite der Abdeckung 3.In the first exemplary embodiment, the ignition bridge 4 consists of a coating on the underside of the cover 3.
Das Ausführungsbeispiel der Fign. 3 und 4 unterscheidet sich von dem ersten Ausführungsbeispiel dadurch, dass Kontaktelemente 26,27 an dem Kartuschenlager 20 (und nicht am Deckel 23) vorgesehen sind. Diese Kontaktelemente ragen durch Löcher 13 in der Oberwand 15 des Kartuschenbehälters hindurch und sie stoßen mit ihren Enden gegen die Kontakteiektroden der Zündbrücke 4. Der Kontakt der Kontaktelemente 26,27 zur Zündbrücke 4 wird hierbei zerstörungsfrei hergestellt.The embodiment of FIGS. 3 and 4 differs from the first exemplary embodiment in that contact elements 26, 27 are provided on the cartridge bearing 20 (and not on the cover 23). These contact elements protrude Holes 13 in the upper wall 15 of the cartridge container and their ends abut against the contact electrodes of the ignition bridge 4. The contact of the contact elements 26, 27 with the ignition bridge 4 is produced in a non-destructive manner.
Das Ausführungsbeispiel der Fign. 5 und 6 entspricht weitgehend demjenigen der Fign. 3 und 4. Die Zündbrücke 4 besteht hierbei aus einem Draht, der sich im Bereich des Widerstandssteges 19 verjüngt. The embodiment of FIGS. 5 and 6 largely corresponds to that of FIGS. 3 and 4. The ignition bridge 4 consists of a wire that tapers in the area of the resistance web 19.

Claims

PATENTANSPRUCHE PATENT CLAIMS
1. Treibmittelkartusche für pyrotechnische Antriebe, mit einem ein Treibmittel (2) enthaltenden Kartuschenbehalter (1 ), der mit einer Abdeckung (3) verschlossen ist,1. propellant cartridge for pyrotechnic drives, with a cartridge container (1) containing a propellant (2), which is closed with a cover (3),
d a d u r c h g e k e n n z e i c h n e t ,characterized ,
dass die Abdeckung (3) eine durch Strom heizbare Zündbrücke (4) trägt, die mit einem Anzundsatz (5) in Verbindung steht.that the cover (3) carries an ignition bridge (4) which can be heated by electricity and which is connected to a starting set (5).
2. Treibmittelkartusche nach Anspruch 1 , dadurch gekennzeichnet, dass die Zündbrücke (4) Kontaktelektroden (17,18) und zwischen diesen einen Widerstandssteg (19) aufweist.2. propellant cartridge according to claim 1, characterized in that the ignition bridge (4) has contact electrodes (17, 18) and between them a resistance web (19).
3. Treibmittelkartusche nach Anspruch 2, dadurch gekennzeichnet, dass die Kontaktelektroden (17,18) durch Stechkontakte (24,25) zugänglich sind, die durch die Abdeckung (3) hindurchgestochen werden.3. propellant cartridge according to claim 2, characterized in that the contact electrodes (17, 18) are accessible through piercing contacts (24, 25) which are pierced through the cover (3).
4. Treibmittelkartusche nach Anspruch 2, dadurch gekennzeichnet, dass die Kontaktelektrode (17,18) durch Kontaktelemente (26,27) zugänglich sind, die durch Löcher (13) in der Abdeckung (3) oder der Oberwand (15) des Kartuschenbehälters (1 ) hindurchsteckbar sind.4. propellant cartridge according to claim 2, characterized in that the contact electrode (17, 18) are accessible through contact elements (26, 27) through holes (13) in the cover (3) or the top wall (15) of the cartridge container (1 ) can be pushed through.
5. Treibmittelkartusche nach einem der Ansprüche 1-4, dadurch gekennzeichnet, dass die Zündbrücke (4) an der Unterseite der Abdeckung (3) befestigt ist.5. propellant cartridge according to any one of claims 1-4, characterized in that the ignition bridge (4) on the underside of the cover (3) is attached.
6. Treibmittelkartusche nach einem der Ansprüche 1 -5, dadurch gekennzeichnet, dass die Zündbrücke (4) aus einer Beschichtung der Abdeckung (3) besteht. 6. propellant cartridge according to one of claims 1 -5, characterized in that the ignition bridge (4) consists of a coating of the cover (3).
7. Treibmittelkartusche nach einem der Ansprüche 1 -6, dadurch gekennzeichnet, dass die Zündbrücke (4) durch Materialentnahme einer Beschichtung der Abdeckung (3) gebildet ist.7. propellant cartridge according to any one of claims 1-6, characterized in that the ignition bridge (4) is formed by removing material from a coating of the cover (3).
8. Treibmittelkartusche nach einem der Ansprüche 1 -5, dadurch gekennzeichnet, dass die Zündbrücke (4) einen Zünddraht aufweist.8. propellant cartridge according to any one of claims 1 -5, characterized in that the ignition bridge (4) has an ignition wire.
9. Treibmittelkartusche nach einem der Ansprüche 1 -8, dadurch gekennzeichnet, dass der Anzundsatz (5) einen Kleber enhält und auf der Abdeckung (3) befestigt ist. 9. propellant cartridge according to any one of claims 1-8, characterized in that the ignition set (5) contains an adhesive and is attached to the cover (3).
PCT/EP2001/003387 2000-04-13 2001-03-24 Propellant cartridge WO2001078949A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001256218A AU2001256218A1 (en) 2000-04-13 2001-03-24 Propellant cartridge

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10018259.3 2000-04-13
DE10018259 2000-04-13
DE10103393A DE10103393A1 (en) 2000-04-13 2001-01-26 Propellant cartridge
DE10103393.1 2001-01-26

Publications (1)

Publication Number Publication Date
WO2001078949A1 true WO2001078949A1 (en) 2001-10-25

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AR (1) AR027705A1 (en)
AU (1) AU2001256218A1 (en)
TW (1) TW473611B (en)
WO (1) WO2001078949A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829420A1 (en) * 2001-09-11 2003-03-14 Hilti Ag Propellant magazine for setting tool, comprises cover foil glued to pocket foil having recess, and spaced pockets with electrical conducting strip and contact points

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1482962A (en) * 1966-04-14 1967-06-02 Union General De Minas Electric firing hammer gun
US3974424A (en) * 1974-10-07 1976-08-10 Ici United States Inc. Variable resistance bridge element
US5254838A (en) * 1987-09-14 1993-10-19 Nippon Koki Co., Ltd. Igniter for electric ignition systems
US5361702A (en) * 1993-04-02 1994-11-08 The United States Of America As Represented By The Secretary Of The Navy Mechanical shielding for electric primer
US5929367A (en) * 1992-06-15 1999-07-27 Chartech Engineering, Inc. Hermetically sealed devices for leak detection
DE19824122A1 (en) * 1998-05-29 1999-12-02 Dynamit Nobel Ag Ignition of the propellant powder of a plastic cartridge, especially for bolt-setting tools

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1482962A (en) * 1966-04-14 1967-06-02 Union General De Minas Electric firing hammer gun
US3974424A (en) * 1974-10-07 1976-08-10 Ici United States Inc. Variable resistance bridge element
US5254838A (en) * 1987-09-14 1993-10-19 Nippon Koki Co., Ltd. Igniter for electric ignition systems
US5929367A (en) * 1992-06-15 1999-07-27 Chartech Engineering, Inc. Hermetically sealed devices for leak detection
US5361702A (en) * 1993-04-02 1994-11-08 The United States Of America As Represented By The Secretary Of The Navy Mechanical shielding for electric primer
DE19824122A1 (en) * 1998-05-29 1999-12-02 Dynamit Nobel Ag Ignition of the propellant powder of a plastic cartridge, especially for bolt-setting tools

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829420A1 (en) * 2001-09-11 2003-03-14 Hilti Ag Propellant magazine for setting tool, comprises cover foil glued to pocket foil having recess, and spaced pockets with electrical conducting strip and contact points

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Publication number Publication date
TW473611B (en) 2002-01-21
AR027705A1 (en) 2003-04-09
AU2001256218A1 (en) 2001-10-30

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