EP0618424A1 - Ignitor - Google Patents

Ignitor Download PDF

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Publication number
EP0618424A1
EP0618424A1 EP19940103456 EP94103456A EP0618424A1 EP 0618424 A1 EP0618424 A1 EP 0618424A1 EP 19940103456 EP19940103456 EP 19940103456 EP 94103456 A EP94103456 A EP 94103456A EP 0618424 A1 EP0618424 A1 EP 0618424A1
Authority
EP
European Patent Office
Prior art keywords
ignition
receiving
housing
contact pin
plastic
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
EP19940103456
Other languages
German (de)
French (fr)
Other versions
EP0618424B1 (en
Inventor
Uwe Brede
Anton Bretfeld
Peter Cornelius
Hans Jena
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.)
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
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 to DE19934307774 priority Critical patent/DE4307774A1/en
Priority to DE4307774 priority
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of EP0618424A1 publication Critical patent/EP0618424A1/en
Application granted granted Critical
Publication of EP0618424B1 publication Critical patent/EP0618424B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00Blasting cartridges, i.e. case and explosive
    • F42B3/10Initiators therefor
    • F42B3/103Mounting initiator heads in initiators; Sealing-plugs

Abstract

The invention relates to an electrical ignitor (detonator, fuze) (1) having a metallic retaining part (2) for a detonating resistor, a first contact pin (3), a second contact pin (4) and at least one ignition charge (5, 6). In order that electrostatic discharges between contact pins and the housing do not cause detonation of the ignition charge, it is proposed according to the invention that the retaining part (2) be capable of being extrusion-coated with plastic and be capable of being inserted into a housing, that a first circumferential expansion (8) be provided on the retaining part (2) and be electrically conductively connected to the first contact pin (3), that a second circumferential expansion (9) be provided on the retaining part (2), which second circumferential expansion (9) can be constructed such that it reaches as far as the housing with a small amount of clearance and whose outer end is not extrusion-coated with plastic. <IMAGE>

Description

  • The invention relates to an ignition device according to the preamble of claim 1.
  • From DE-OS 36 06 364 an electrical ignition bridge carrier for igniting primer sets, delay sets and pyrotechnic mixtures and for igniting primary primers and sets is known. The ignition bridge carrier or this ignition device has a metallic receiving part with a cylindrical recess in which a ceramic body is introduced. This ceramic body is provided with two bores, in each of which a solid, tubular contact pin is firmly and tightly fitted. On the connection side, these contact pins protrude from the ceramic body, while they are connected to one another on the ignition side via an ignition bridge. An ignition charge is arranged in the receiving part adjacent to the ignition bridge. During ignition, such a high voltage is applied to the contact pins that the ignition bridge burns suddenly, which ignites the ignition charge.
  • Such igniters can e.g. be used in pressure elements for use in belt tensioners, buckle tensioners or in belt retractors of motor vehicles. In the event of an accident, the ignition device is triggered by a sensor, whereby a gas is generated in the pressure element, which e.g. moved a piston. The piston is connected to the belt buckle by a rope or to an automatic belt retractor and tightens the belt.
  • A disadvantage of the ignition device described is that an electrostatic charge can occur between the contact pins and the housing due to externally induced electrical fields, which can lead to undesired ignition of the ignition charge when discharged.
  • The invention is therefore based on the object of developing an ignition device according to the preamble of claim 1 such that no ignition of the ignition charge takes place in the event of electrostatic discharges between the contact pins and the housing.
  • According to the invention, this object is achieved in that the receiving part can be encapsulated with plastic and inserted into a housing, that a first circumferential extension is provided on the receiving part, which is electrically conductively connected to the first contact pin, that a second circumferential extension is provided on the receiving part, which is provided under low exemption can be trained up to the housing and the outer end is not encapsulated with plastic.
  • Because the first contact pin is conductively connected to the receiving part and the receiving part extends over the second circumferential extension to the housing, any electrostatic discharge takes place between this second circumferential extension and the housing and thus far away from the ignition sets. Due to the plastic body, the receiving part is safe and easy to handle. The housing is designed to be electrically conductive.
  • The first contact pin is advantageously connected to the first circumferential extension by welding, soldering or riveting. This ensures a permanent and optimal connection.
  • In a preferred embodiment according to the invention, a metal layer element with an ignition bridge is arranged in the receiving part. Such a metal layer primer or metal layer element is state of the art and described, for example, in DE-PS 20 20 016. These metal layer elements are inexpensive to manufacture and deliver precisely defined ones Ignition bridges.
  • The second contact pin is expediently anchored in an electrically conductive manner in the metal layer element. This can e.g. done by soldering. The ignition bridge is located between this second contact pin and the receiving part or the first contact pin on the metal layer element. This first contact pin thus forms the other connection electrode.
  • In a preferred embodiment, the first and the second circumferential extension are arranged diametrically opposite one another with respect to the longitudinal axis of the receiving part.
  • The receiving part is expediently cylindrical and made of brass and is extrusion-coated with polyamide.
  • In a preferred embodiment, the ignition device is installed in a housing loaded with a gas-generating substance.
  • In an alternative embodiment, an annular recess is advantageously provided between the plastic body and the receiving part in the area of the igniter charges. Through this recess, the mechanical impulse is not introduced directly into the plastic jacket during ignition.
  • The circumferential expansions are expediently arranged at the end of the receiving part that is opposite to the ignition charges. The circumferential extensions are preferably designed in the form of tabs, lobes, webs or the like and extend essentially radially to the longitudinal axis of the receiving part. However, it can also be advantageous if the circumferential extensions merge into one another, ie form an annular collar or an annular flange.
  • Further features of the invention emerge from the drawings, which are described below.
  • It shows:
  • Fig. 1
    an ignition device according to the invention in longitudinal section (Fig. 1a) and in plan view (Fig. 1b),
    Fig. 2
    an inventive receiving part with a metal layer element in longitudinal section (Fig. 2a) and in cross section (Fig. 2b),
    Fig. 3
    a pressure element with built-in igniter,
    Fig. 4
    an alternative ignition device according to the invention, again installed in a pressure element.
  • Figure 1 shows an ignition device 1 with a receiving part 2 provided with a plastic body 13. Figure 1a shows a longitudinal section and Figure 1b shows a plan view. FIGS. 2a, 2b show the identical receiving part 2, but without ignition kits and plastic bodies.
  • The receiving part 2 is cylindrical and is made of metal (eg brass). A metal layer element 10 is inserted into the receiving part 2 at one end. In the area of the metal layer element 10, the receiving part 2 has a slight circumferential expansion. The ignition bridge is located on the metal layer element 10 and is connected in a electrically conductive manner to the housing of the receiving part 2 by a pole. At its end of the receiving part 2 facing the metal layer element there are two diametrically opposite, with respect to the longitudinal axis 11, lobe-shaped circumferential extensions 8, 9 arranged. These circumferential extensions 8, 9 extend at right angles to the housing of the receiving part 2 and run on their lower side flush with the lower end face of the metal layer element 10 arranged there. A first contact pin 3 is riveted or welded into the first circumferential extension 8, advantageously soldered in, and extends parallel to the longitudinal axis 11 of the receiving part 2. A second contact pin 4 is inserted into the metal layer element 10 and lies on the lower end face of the metal layer element 10 with a flange 14 for limiting the depth of the insert. This second contact pin 4 is arranged on the longitudinal axis of the receiving part 2.
  • 2b shows the arrangement and design of the lobe-shaped circumferential extensions 8, 9.
  • A first ignition charge 5 and a second ignition charge 6 are arranged on the metal layer element 10 within the receiving part 2 (see FIG. 1a). The second ignition charge 6 is provided with a protective layer or cover 15. A crown 16 is arranged in the middle of the second ignition charge 6.
  • The receiving part 2 is surrounded by a plastic body 13 made of polyamide. However, another plastic (e.g. polyether sulfone) or composite material can also be used. The receiving part 2 protrudes from the plastic body 13 with its upper end, the contact pins 3, 4 and the second circumferential extension 9 with its end. "Top" basically means the ignition side and "bottom" the electrical connection side.
  • The second circumferential extension 9 projects close to the outer circumferential wall of the plastic body 13. At the lower end of the plastic body 13, a shoe 17, the contact pins 3, 4 adjacent, is arranged, which is used to attach known plugs or sockets. This connector shorts the two contact pins 3, 4 when the plug is not inserted.
  • A flange 18 with a notch 19 is arranged above the shoe 17. The flange 18 is used to install the ignition device 1 in a pressure element housing (see FIG. 3). The ignition device 1 can be positioned with the notch 19 in the production process. Above the second circumferential extension 9, an annular seal 20 designed as an O-ring is arranged on the outer wall of the plastic body 13.
  • 3 shows the ignition device 1 according to FIGS. 1, 2 installed in a pressure element 12. The housing 7 of the pressure element 12 surrounds the ignition device 1 almost completely and lies against the outer wall of the plastic body 13. Above the ignition device, the housing 7 of the pressure element 12 forms a cavity in which a gas-generating charge 21 is arranged, which is protected on its lower side by a cover film 22. On the upper end face, the housing 7 has a predetermined breaking point 23 through which the released gas can leave the pressure element 12. The flange 18 already described above rests on an edge of the housing 7, a cone in a part 24 pressing the flange 18 and thus the ignition device sealingly against the housing 7. At the lower end of the ignition device, a known short-circuit socket 25 is shown, which short-circuits the two contact pins 3, 4 when the plug is not inserted. According to the lobe-shaped second circumferential extension 9 projects close to the housing 7 of the Pressure element 12 approach. In the case of electrostatic charges between a contact pin 3, 4 and the housing 7, a voltage flashover therefore takes place in a zone which is far away from the ignition sets 5, 6 in the ignition device 1. This arrangement thus provides protection against electrostatic discharge.
  • 4 shows an alternative ignition device. The alternative is that the plastic body 13 has an annular recess 26 in the upper region of the receiving part 2. As a result, the receiving part 2 or the brass sleeve, in which the igniter 5, 6 are located, is exposed in the upper region. This has the advantage that the mechanical impulse (shock load) is not introduced directly into the plastic body during ignition. The recess 26 extends almost over the entire length of the second ignition charge 6. The lower end of the recess 26 is formed with a radius.
  • The pressure element described in Fig. 4 also shows an embodiment without a socket. Here, the contacting between the contact pins 3, 4 and the supply line takes place by means of a soldered connection or clamp connection.
  • The ring seal 20 shown in the figures also serves to protect the gas-generating charge 21 from moisture.
  • High-strength plastics often have a high sensitivity to stress cracking. The receiving part 2 reduces the tensions in the plastic body caused by the pressing in of the ignition charges. This means that there are no long-term cracks in the plastic body.

Claims (13)

  1. Electrical ignition device (1) with a metallic receiving part (2) for an ignition resistor, a first (3) and a second contact pin (4) and at least one ignition set (5, 6), characterized in that the receiving part (2) can be extrusion-coated with plastic and can be inserted into a housing (7) that a first circumferential extension (8) is provided on the receiving part (2) and is electrically conductively connected to the first contact pin (3), that a second circumferential extension (9) on the receiving part (2) It is provided, which can be designed to reach the housing (7) with little clearance and the outer end of which is not overmolded with plastic.
  2. Ignition device according to claim 1, characterized in that the first contact pin (3) is connected to the first circumferential extension (8) by welding, riveting or soldering.
  3. Ignition device according to claim 1 or 2, characterized in that a metal layer element (10) with an ignition bridge is arranged in the receiving part (2).
  4. Ignition device according to Claim 3, characterized in that the second contact pin (4) is anchored in an electrically conductive manner in the metal layer element (10).
  5. Ignition device according to one of claims 1 to 4, characterized in that the first (8) and the second circumferential extension (9) are arranged diametrically opposite with respect to the longitudinal axis (11) of the receiving part (2).
  6. Ignition device according to one of claims 1 to 5, characterized in that the receiving part (2) is made of brass.
  7. Ignition device according to one of claims 1 to 6, characterized in that the receiving part (2) is cylindrical.
  8. Ignition device according to one of claims 1 to 7, characterized in that the receiving part (2) is extrusion-coated with polyamide.
  9. Ignition device according to one of Claims 1 to 8, characterized in that the ignition device (1) is installed in a housing (7) loaded with a gas-generating substance.
  10. Ignition device according to one of Claims 1 to 9, characterized in that an annular recess (26) is provided between the plastic body (13) and the receiving part (2) in the region of the ignition charges (5, 6).
  11. Ignition device according to one of claims 1 to 10, characterized in that the circumferential extensions (8, 9) are arranged at the end of the receiving part (2) opposite the ignition sets (5, 6).
  12. Ignition device according to one of claims 1 to 11, characterized in that the circumferential extensions (8, 9) are tab-shaped, tab-shaped, web-shaped or the like and extend essentially radially to the longitudinal axis (11) of the receiving part (2).
  13. Ignition device according to one of claims 1 to 12, characterized in that the circumferential extensions (8, 9) merge into one another.
EP19940103456 1993-03-12 1994-03-08 Ignitor Expired - Lifetime EP0618424B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19934307774 DE4307774A1 (en) 1993-03-12 1993-03-12 Ignition device
DE4307774 1993-03-12

Publications (2)

Publication Number Publication Date
EP0618424A1 true EP0618424A1 (en) 1994-10-05
EP0618424B1 EP0618424B1 (en) 1997-06-04

Family

ID=6482555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940103456 Expired - Lifetime EP0618424B1 (en) 1993-03-12 1994-03-08 Ignitor

Country Status (5)

Country Link
US (1) US5433147A (en)
EP (1) EP0618424B1 (en)
JP (1) JP3535559B2 (en)
DE (1) DE4307774A1 (en)
ES (1) ES2102707T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998028167A1 (en) 1996-12-24 1998-07-02 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Igniter element, in particular for pyrotechnical mixtures
WO1999033685A1 (en) 1997-12-23 1999-07-08 Dynamit Nobel Gmbh Pyrotechnic gas generator
WO2018166720A1 (en) * 2017-03-17 2018-09-20 Takata AG Ignition device for a gas generator of an airbag module for a motor vehicle

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5596163A (en) * 1993-08-25 1997-01-21 Ems-Patvag Ag Gas generator igniting capsule
US5670737A (en) * 1993-12-14 1997-09-23 Denel (Proprietary) Limited Breaking up of rock and the like
FR2720493B1 (en) * 1994-05-31 1996-07-19 Giat Ind Sa Pyrotechnic initiator.
US5621183A (en) * 1995-01-12 1997-04-15 Trw Inc. Initiator for an air bag inflator
FR2732455B1 (en) * 1995-03-31 1997-06-13 Davey Bickford Electropyrotechnical initiator, method for producing such an initiator and security system for vehicle
US5556132A (en) * 1995-04-13 1996-09-17 Trw Inc. Vehicle occupant restraint with auto ignition material
US5616881A (en) * 1995-05-30 1997-04-01 Morton International, Inc. Inflator socket pin collar for integrated circuit initaitor with integral metal oxide varistor for electro-static discharge protections
US5631439A (en) * 1995-06-07 1997-05-20 Tracor Aerospace, Inc. Multiple squib assembly
US5672841A (en) * 1995-12-15 1997-09-30 Morton International, Inc. Inflator initiator with zener diode electrostatic discharge protection
US6662727B2 (en) 1996-03-14 2003-12-16 Dynamit Nobel Gmbh Gas generator, in particular for belt tighteners
US5932832A (en) * 1996-04-15 1999-08-03 Autoliv Asp, Inc. High pressure resistant initiator with integral metal oxide varistor for electro-static discharge protection
FR2747772B1 (en) * 1996-04-22 1999-08-06 Livbag Snc Self-locking two-wire initiator for pyrotechnic gas generators
DE19617481A1 (en) * 1996-05-02 1997-11-06 Dynamit Nobel Ag Electric ignition device
DE19639133A1 (en) * 1996-07-31 1998-02-05 Dynamit Nobel Ag Water-tight miniature electrical detonation device
FR2754050B1 (en) * 1996-10-01 1998-10-30 Livbag Snc Pyrotechnic gas microgenerator with blocked two-wire socket
US6311621B1 (en) 1996-11-01 2001-11-06 The Ensign-Bickford Company Shock-resistant electronic circuit assembly
US6079332A (en) * 1996-11-01 2000-06-27 The Ensign-Bickford Company Shock-resistant electronic circuit assembly
US5988069A (en) * 1996-11-12 1999-11-23 Universal Propulsion Company, Inc. Electric initiator having a sealing material forming a ceramic to metal seal
DE19847242C1 (en) * 1998-10-14 2000-04-27 Piepenbrock Pyrotechnik Gmbh Electromechanical clutch for triggering ammunition electrically and protecting against stimulation from electromagnetic radiation includes contact head with contacts and plug connector
GB2347485A (en) * 1999-03-05 2000-09-06 Breed Automotive Tech Pretensioner
EP1227016A4 (en) * 1999-10-14 2005-01-26 Nippon Kayaku Kk Gas generator
AT412127B (en) * 1999-10-15 2004-09-27 Hirtenberger Praez Stechnik Gm Igniter for motor vehicle air bag pyrotechnic has electronics encased in resin capsule inserted into sealed igniter housing
US7188567B1 (en) 1999-11-12 2007-03-13 Zodiac Automotive Us Inc. Gas generation system
EP1101667B1 (en) * 1999-11-22 2004-01-02 Hirschmann Austria GmbH Igniter
DE50007059D1 (en) * 1999-11-22 2004-08-19 Hirschmann Automotive Gmbh Ran fuze
DE10048287A1 (en) * 2000-09-29 2002-04-25 Audi Ag Detonation device for automobile passenger restraint has insulating material protecting detonation charge from electrostatic charge or fault current
DE20020102U1 (en) 2000-11-27 2001-04-05 Trw Airbag Sys Gmbh & Co Kg Pyrotechnic gas generating device
US6578487B2 (en) * 2000-12-08 2003-06-17 Special Devices, Inc. Pyrotechnic initiator with a narrowed sleeve retaining a pyrotechnic charge and methods of making same
US6848365B2 (en) * 2000-12-08 2005-02-01 Special Devices, Inc. Initiator with an internal sleeve retaining a pyrotechnic charge and methods of making same
DE10125354C2 (en) * 2001-05-23 2003-11-27 Nico Pyrotechnik Ignition device for a passenger protection device of a motor vehicle
US6467414B1 (en) 2001-06-29 2002-10-22 Breed Automotive Technology, Inc. Ignitor with printed electrostatic discharge spark gap
US6672215B2 (en) * 2001-10-17 2004-01-06 Textron Systems Corporation Constant output high-precision microcapillary pyrotechnic initiator
US6644206B2 (en) * 2001-12-21 2003-11-11 Trw Inc. Electrically actuatable initiator with output charge
DE10236508A1 (en) * 2002-02-09 2003-08-21 Dynamit Nobel Ag Pyrotechnic ignition chain with a plastic ignition carrier with integrated metal insert
US7137341B2 (en) * 2002-05-17 2006-11-21 Zodiac Automotive Us Inc. Distributed charge inflator system
US7162958B2 (en) * 2002-05-17 2007-01-16 Zodiac Automotive Us Inc. Distributed charge inflator system
DE502004005237D1 (en) 2003-04-30 2007-11-29 Delphi Tech Inc Housing for a pyromechanical separator with integrated ignition element
DE102004010746A1 (en) * 2003-04-30 2004-12-09 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Housing for a pyromechanical separator with an integrated igniter
DE10323531B3 (en) * 2003-05-24 2005-02-10 Hilti Ag Propellant charge set, especially for bolt guns
JP2005069666A (en) * 2003-08-06 2005-03-17 Takata Corp Initiator and gas generator
DE10348382A1 (en) * 2003-10-17 2005-05-25 Daimlerchrysler Ag Pyrotechnic gas generator for road vehicle airbag deployment system has electric contacts with connections to housing to prevent accidental electric discharges igniting detonator
US7690303B2 (en) * 2004-04-22 2010-04-06 Reynolds Systems, Inc. Plastic encapsulated energetic material initiation device
US20060260498A1 (en) * 2005-04-05 2006-11-23 Daicel Chemical Industries, Ltd. Igniter assembly
DE102007014403B4 (en) * 2007-03-26 2020-02-13 Trw Airbag Systems Gmbh Pyrotechnic drive unit and method for producing such a drive unit
DE102008049652A1 (en) * 2008-09-30 2010-04-01 Trw Airbag Systems Gmbh Gas generator for use as protective device in vehicle and for use in airbag module, comprises multiple units, where sealing unit is arranged in area of colliding parts
KR101782076B1 (en) 2008-09-30 2017-09-26 티알더블유 에어백 시스템즈 게엠베하 Gas generator, method for the production thereof and module having a gas generator
US20120234839A1 (en) * 2011-03-18 2012-09-20 Autoliv Asp, Inc. Compressed gas inflator with composite overwrap
US8397639B2 (en) * 2011-04-08 2013-03-19 Autoliv Asp, Inc. Initiator with molded ESD dissipater
US9050944B1 (en) * 2012-11-30 2015-06-09 Tk Holdings Inc. Gas generating system with initiator sub-assembly
US9939235B2 (en) * 2013-10-09 2018-04-10 Battelle Energy Alliance, Llc Initiation devices, initiation systems including initiation devices and related methods
FR3012394B1 (en) 2013-10-25 2017-05-26 Autoliv Dev Fixing interface for pyrotechnic actuator
FR3012595B1 (en) * 2013-10-25 2016-07-01 Autoliv Dev Pyrotechnic igniter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1187373A (en) * 1966-10-05 1970-04-08 Graviner Colnbrook Ltd Improvements in or relating to Explosive Cartridges
DE2020016A1 (en) * 1970-04-24 1971-11-11 Dynamit Nobel Ag Metallschichtzuendmittel
US3971320A (en) * 1974-04-05 1976-07-27 Ici United States Inc. Electric initiator
DE3606364A1 (en) * 1986-02-27 1987-09-03 Dynamit Nobel Ag Electric ignition bridge for the application of application sets, delay sets and pyrotechnical mixtures, and for the priming of primary ignition substances and sets and method for the production thereof
US5140906A (en) * 1991-11-05 1992-08-25 Ici Americas, Inc. Airbag igniter having double glass seal

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202416A (en) * 1922-05-19 1923-08-20 V L Oil Processes Ltd Improvements in or relating to electric primers and vent sealing tubes
DE845466C (en) * 1950-03-17 1952-07-31 Dynamit Nobel Ag electrical Sicherheitszuender
US3180263A (en) * 1963-04-08 1965-04-27 Jr Nathan P Williams Static electricity desensitizing device
JPS5748516B2 (en) * 1978-07-01 1982-10-16
DE3425836C2 (en) * 1984-07-13 1988-04-07 Bayern-Chemie Gesellschaft Fuer Flugchemische Antriebe Mbh, 8261 Aschau, De
US4745858A (en) * 1986-09-26 1988-05-24 Ireco Incorporated Electric detonator with static electricity suppression
GB8926073D0 (en) * 1989-11-17 1990-01-10 Amp Gmbh Shunting device for use in electrical connectors
CA2103510A1 (en) * 1992-09-11 1994-03-12 Bradley D. Harris Printed circuit bridge for an airbag inflator
JP2700100B2 (en) * 1993-05-28 1998-01-19 日本工機株式会社 Igniter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1187373A (en) * 1966-10-05 1970-04-08 Graviner Colnbrook Ltd Improvements in or relating to Explosive Cartridges
DE2020016A1 (en) * 1970-04-24 1971-11-11 Dynamit Nobel Ag Metallschichtzuendmittel
US3971320A (en) * 1974-04-05 1976-07-27 Ici United States Inc. Electric initiator
DE3606364A1 (en) * 1986-02-27 1987-09-03 Dynamit Nobel Ag Electric ignition bridge for the application of application sets, delay sets and pyrotechnical mixtures, and for the priming of primary ignition substances and sets and method for the production thereof
US5140906A (en) * 1991-11-05 1992-08-25 Ici Americas, Inc. Airbag igniter having double glass seal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998028167A1 (en) 1996-12-24 1998-07-02 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Igniter element, in particular for pyrotechnical mixtures
WO1999033685A1 (en) 1997-12-23 1999-07-08 Dynamit Nobel Gmbh Pyrotechnic gas generator
WO2018166720A1 (en) * 2017-03-17 2018-09-20 Takata AG Ignition device for a gas generator of an airbag module for a motor vehicle

Also Published As

Publication number Publication date
ES2102707T3 (en) 1997-08-01
US5433147A (en) 1995-07-18
EP0618424B1 (en) 1997-06-04
DE4307774A1 (en) 1994-09-15
JP3535559B2 (en) 2004-06-07
JPH06300497A (en) 1994-10-28

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