DE4019877A1 - Gas generator for vehicle airbag - with delay channel to retard pressure increase on detonation - Google Patents

Gas generator for vehicle airbag - with delay channel to retard pressure increase on detonation

Info

Publication number
DE4019877A1
DE4019877A1 DE19904019877 DE4019877A DE4019877A1 DE 4019877 A1 DE4019877 A1 DE 4019877A1 DE 19904019877 DE19904019877 DE 19904019877 DE 4019877 A DE4019877 A DE 4019877A DE 4019877 A1 DE4019877 A1 DE 4019877A1
Authority
DE
Germany
Prior art keywords
gas generator
ignition
combustion chamber
generator according
connecting line
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
DE19904019877
Other languages
German (de)
Other versions
DE4019877C2 (en
Inventor
Bernd Dipl Ing Werner
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.)
Bayern Chemie Gesellschaft fuer Flugchemische Antriebe mbH
Original Assignee
Bayern Chemie Gesellschaft fuer Flugchemische Antriebe mbH
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 Bayern Chemie Gesellschaft fuer Flugchemische Antriebe mbH filed Critical Bayern Chemie Gesellschaft fuer Flugchemische Antriebe mbH
Priority to DE19904019877 priority Critical patent/DE4019877A1/en
Publication of DE4019877A1 publication Critical patent/DE4019877A1/en
Application granted granted Critical
Publication of DE4019877C2 publication Critical patent/DE4019877C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/263—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output
    • B60R2021/2633—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output with a plurality of inflation levels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
    • B60R2021/2648—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder comprising a plurality of combustion chambers or sub-chambers

Abstract

Gas generator for inflation of air bags in automobiles has a central support element (1) with an H-shaped housing section (2) on either side. A partition wall (4) forms chambers for propellant (5) and filtering. The propellant is fired by a detonator (6) in the central body, igniting a material in the central support. An ignition channel (12) to the propellant contains e.g. porous packing, expansion chambers etc. to act as ignition retarders. ADVANTAGE - Control of inflation rate, for safety.

Description

Die Erfindung betrifft einen Gasgenerator nach dem Oberbegriff des Pa­ tentanspruches 1.The invention relates to a gas generator according to the preamble of Pa claim 1.

Es wurde verschiedentlich bereits das Sicherheitsbedürfnis von Seiten der Fahrzeughersteller dadurch erhöht, daß man gefordert hat, ein Si­ cherheitssystem solle auch Insassen schützen, die nicht angegurtet oder sonst geschützt seien (z. B. standing child position = auf der Beifahrer­ seite nahe dem Armaturenbrett stehendes Kind) .There have been various security needs on the part the vehicle manufacturer increased by demanding an Si The safety system should also protect occupants who are not wearing a seat belt or otherwise be protected (e.g. standing child position = on the passenger child standing near the dashboard).

Es ist deshalb bereits vorgeschlagen worden, das Aufblasen eines Gaskis­ sens stufenförmig, insbesondere zweistufig zu gestalten, vgl. z. B. die US-PS 39 72 545.Inflating a gas has therefore already been proposed to be designed in a stepped manner, in particular in two stages, cf. e.g. B. the U.S. Patent 39 72 545.

Man hat auch mit verschiedenen Treibstoffen experimentiert. Zweck bishe­ riger Versuche war, den Druckanstiegsverlauf oder das Aufblasen, insbe­ sondere eines Gassackes zeitlich in gewünschter Weise zu steuern. Dabei ist vorteilhaft, dies in der Weise durchzuführen, daß zunächst bis etwa 20 ms ein langsames Aufblasen erfolgt und nach 20 oder 30 ms der Rest des Aufblasens mit ganz steilem Druckanstieg bewerkstelligt wird.Various fuels have also been experimented with. Purpose so far attempts, such as the increase in pressure or the inflation, were particularly difficult to control a gas bag in time in the desired manner. Here it is advantageous to do this in such a way that initially to about There is a slow inflation after 20 ms and the rest after 20 or 30 ms inflation is accomplished with a very steep increase in pressure.

Die Erfindung geht hier einen völlig anderen und neuen Weg, wie er im Kennzeichen des Anspruches 1 enthalten ist. Besondere Mittel zur Durch­ führung dieser Lösung sind in weiteren Ansprüchen sowie der Beschreibung und Zeichnung von Ausführungsbeispielen zu entnehmen.The invention goes a completely different and new way, as in Characteristic of claim 1 is included. Special means of through leadership of this solution are in further claims and the description and drawing of exemplary embodiments.

Der Gasgenerator weist einen röhrenförmigen und symmetrischen Aufbau vor. Für den Zusammenbau des Generators sind nur wenige unterschiedliche Teile notwenig, welche alle ohne stoffschlüssige, sondern nur über form­ schlüssige Verbindungen aneinandergefügt werden können. The gas generator has a tubular and symmetrical structure in front. There are only a few different ones for assembling the generator Parts necessary, all without integral, but only about form conclusive connections can be joined together.  

Das Gehäuse besteht aus einem Zentralträgerelement 1, welches zu beiden Seiten ein H-förmiges Gehäuseteil 2 über eine Bördelung 18 trägt. Am En­ de des Gehäuseteils 2 wird, wiederum über eine Bördelung 17, eine End­ scheibe 3 mit integriertem Stehbolzen 22 befestigt. Durch den Zwischen­ boden 4 werden nach Zusammenfügen mit Teil 1 und 3 jeweils eine Kammer für Treibstoff 5 und Filterung gebildet. Das heißt, der Generator be­ steht im wesentichen aus einem Anzünderteil, zwei außenliegenden Treib­ stoffkammern links und rechts und jeweils einer zwischen Anzündung und Treibstoffkammern liegenden Filterkammern.The housing consists of a central carrier element 1 , which carries an H-shaped housing part 2 via a flange 18 on both sides. At the end of the housing part 2 , an end disk 3 with an integrated stud 22 is fastened, again via a flange 17 . Through the intermediate floor 4 , a chamber for fuel 5 and filtering are formed after joining with parts 1 and 3 . This means that the generator essentially consists of an igniter part, two external fuel chambers on the left and right and one filter chamber between the ignition and the fuel chambers.

Die Anzündung des Treibstoffes erfolgt durch die Zündpille 6, welche im Zentralkörper eingeschraubt oder gebördelt wird. Die von der Zündpille angezündete Anzündmasse 8, welche beispielsweise als Pulver, Granulat oder spezielle geformte Anzündringe in der Hülse 9 im Zentralträger 1 plaziert ist, kann über den zur Generatorlängsachse achsenparallel ver­ laufenden Anzündkanal 12 die Treibstoffmasse 5, z. B. in Form von Tablet­ ten, entzünden. Durch den Abbrand entsteht ein hoher Druck in der Treib­ stoffkammer, der die zum Schutz gegen Umwelteinflüsse auf den Düsenboden 4 aufgeklebte Folie 15 zerreißt. Danach kann das heiße Gas durch die Düsenöffnungen 14 aus der Treibstoffkammer in die Filterkammer expandie­ ren. Ein tannenbaumförmig ausgebildeter Teil, hier Gasteiler 10 genannt, verwirbelt das Gas in solcher Weise, daß es die radial angeordneten Grobfilter 19 und den nachgeschalteten Feinfilter 20 gleichmäßig über die gesamte Länge beaufschlagt. Der Gasteiler 10 wird über ein Gewinde 11 auf den Zentralträger 1 aufgeschraubt und muß dort als auch am ande­ ren Ende abgedichtet werden. Dies kann durch O-Ringe 13 oder andere Dichtmittel geschehen.The fuel is ignited by the squib 6 , which is screwed or crimped into the central body. The ignited from the primer 8 , which is placed for example as powder, granules or special shaped ignition rings in the sleeve 9 in the central carrier 1 , can over the ignition axis 12 parallel to the generator longitudinal axis running ignition channel 12, the fuel mass 5 , z. B. in the form of tablet, ignite. The erosion creates a high pressure in the propellant chamber, which tears the film 15 stuck onto the nozzle base 4 for protection against environmental influences. Thereafter, the hot gas can expand through the nozzle openings 14 from the fuel chamber into the filter chamber. A fir tree-shaped part, here called gas divider 10 , swirls the gas in such a way that it distributes the radially arranged coarse filter 19 and the downstream fine filter 20 evenly over the applied to the entire length. The gas divider 10 is screwed onto the central support 1 via a thread 11 and must be sealed there as well as at the other end. This can be done by O-rings 13 or other sealants.

Das heiße Gas tritt aus der Filterkammer über die Öffnungen 21 aus und kann nun den Luftsack füllen.The hot gas emerges from the filter chamber through the openings 21 and can now fill the airbag.

Aus wirtschaftlichen und aus Gründen der Zuverlässigkeit soll nur mit Vorteil ein zentraler Zünder verwendet werden. Bedingt durch den konzep­ tionellen Gedanken der Leitungen zu den außenliegenden Treibstoffkammern ist jedoch das grundsätzliche Potential vorhanden, symmetrisches oder unterschiedliches Anzünden der beiden Hauptladungen zu ermöglichen, z. B. durchFor economic and reliability reasons, only with Advantage a central detonator can be used. Due to the concept tional thoughts of the lines to the external fuel chambers however, the fundamental potential is present, symmetrical or  to allow different ignition of the two main charges, e.g. B. by

  • - im Abbrandverhalten unterschiedliche Anzündmassen im "Koaxialkanal" 25 der Anzündung- Different ignition masses in the "coaxial channel" 25 of the ignition in the combustion behavior
  • - durch installierte Verzögerungsmittel chemischer oder physikalischer Art (chemisch - → beschichtete Anzündmaterialien 27, physikalisch - → Drosselstellen 22 oder unterschiedliche Expansionsräume z. B. bei passiver Bohrung 23 durch erweiterten Kanal 24 usw.).- By means of installed delay means of a chemical or physical type (chemical - → coated ignition materials 27 , physical - → throttling points 22 or different expansion spaces, e.g. in the case of a passive bore 23 through an enlarged channel 24 , etc.).

Zusätzlich kann die Abbrandcharakteristik des Gasgenerators vorteilhaft verändert werden durch Unterschiede zwischen der linken und rechten Hauptladung betreffenIn addition, the combustion characteristic of the gas generator can be advantageous be changed by differences between the left and right Main cargo concern

  • - Treibstoffmasse einschließlich Kern/Überzug 27 - fuel mass including core / coating 27
  • - Geometrie des Treibstoffes 5 (z. B. Tablettendurchmesser)- geometry of the fuel 5 (e.g. tablet diameter)
  • - Brennkammermaximaldruck durch unterschiedliche Düsenquerschnitte von 14.- Combustion chamber maximum pressure due to different nozzle cross sections of 14 .

Daraus resultierend kann auch die der jeweiligen Treibstoffkammer zuge­ ordnete Filterkammer entsprechend der Auslegung mehr/weniger Filtermasse bzw. Filterqualität angepaßt werden, d. h. daß die mechanische oder ther­ mische Belastung des Filters dadurch stark gemindert werden kann.This can also result in the respective fuel chamber arranged filter chamber according to the design more / less filter mass or filter quality are adjusted, d. H. that the mechanical or ther mixing load on the filter can be greatly reduced.

Die Erfindung zeigt hier ein Konzept auf, welches mittels zentralen Zün­ ders unterschiedlich auslegbare Treibstoffkammern mit den dazu optimier­ ten Filterkammern ermöglicht, welche die heutigen Anforderungen an einen Beifahrer-Gasgenerator bezüglichThe invention shows a concept here, which by means of central Zün differently interpretable fuel chambers with the optimizing filter chambers, which meet today's requirements for a Passenger gas generator regarding

  • - frühest möglichen Zeitpunkt für erstes Arbeitsgas- The earliest possible time for the first working gas
  • - sanfter Druckanstieg bis 20 ms- gentle pressure increase up to 20 ms
  • - schnelles Füllen des Luftsackes bis ca. 50 ms erfüllen kann mittels eines einfachen Zündsystems und eines einzigen Ge­ häuses.- Fast filling of the airbag up to approx. 50 ms can meet using a simple ignition system and a single Ge house.

Claims (6)

1. Gasgenerator für den Insassenschutz in Fahrzeugen, z. B. zum Auf­ blasen eines Gassackes durch Anzünden eines gaserzeugenden Festtreib­ stoffes in einer Brennkammer, von der aus das Gas in eine Kammer über­ tritt, in der es gefiltert, gekühlt und so verteilt wird, daß ein räum­ lich möglichst gleichmäßiges Aufblasen des Gassackes im Bereich zwischen etwa 20 bis 60 ms erfolgt, dadurch gekennzeichnet, daß zur zeitlichen Steuerung des Aufblasens wenigstens ein zentraler Anzünder (6) und we­ nigstens eine Brennkammer (2) mit Abstand dazu angeordnet ist, wobei ei­ ne Verbindungsleitung (12) zwischen den beiden (6, 2) einen Zündverzöge­ rer bildet.1. Gas generator for occupant protection in vehicles, for. B. to blow on an airbag by igniting a gas-generating solid propellant in a combustion chamber, from which the gas passes into a chamber in which it is filtered, cooled and distributed so that a spatial Lich uniform inflation of the airbag in the area between about 20 to 60 ms, characterized in that at least one central igniter ( 6 ) and at least one combustion chamber ( 2 ) are arranged at a distance therefrom for the timing of the inflation, with a connecting line ( 12 ) between the two ( 6 , 2 ) forms an ignition delay. 2. Gasgenerator nach Anspruch 1, dadurch gekennzeichnet, daß für die Zündverzögerung physikalische Mittel wie poröse Packungen, Drossel­ stellen, Erweiterungen, z. B. Fallen, Expansionsräume und dergleichen in der Verbindungsleitung (12) angeordnet sind.2. Gas generator according to claim 1, characterized in that for the ignition delay physical means such as porous packings, throttle, extensions, z. B. traps, expansion rooms and the like are arranged in the connecting line ( 12 ). 3. Gasgenerator nach Anspruch 1, dadurch gekennzeichnet, daß für die Zündverzögerung chemische Mittel, z. B. abbrandverzögernde Beschich­ tungen oder Überzüge auf der Anzündmasse (8) in der Verbindungsleitung (12) angeordnet sind.3. Gas generator according to claim 1, characterized in that for the ignition delay chemical agents, for. B. fire-retardant coatings or coatings on the igniter ( 8 ) in the connecting line ( 12 ) are arranged. 4. Gasgenerator nach einen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Anzündmasse (8) nicht nur im zentralen Anzün­ der angeordnet ist, sondern sich auch wenigstens teilweise in die Ver­ bindungsleitung (12) hinein erstreckt. 4. Gas generator according to one of the preceding claims, characterized in that an ignition compound ( 8 ) is not only arranged in the central igniter, but also extends at least partially into the connecting line ( 12 ). 5. Gasgenerator nach einen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß wenigstens zwei, vorzugsweise zentral angeordnete Anzünder (6) über eine axiale Leitung (12) mit je einer Brennkammer (2) verbunden sind und hierbei sowohl Anzündmasse (8) als auch Festtreib­ stoff (5), als auch Mittel zur Zündverzögerung gleich oder unterschied­ lich vorgewählt sind.5. Gas generator according to one of the preceding claims, characterized in that at least two, preferably centrally arranged igniters ( 6 ) via an axial line ( 12 ) are each connected to a combustion chamber ( 2 ) and in this case both ignition material ( 8 ) and solid propellant ( 5 ), and means for delayed ignition are the same or different preselected. 6. Gasgenerator nach einen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß wenigstens zwei unterschiedliche Anzündmittel (2) mit einer Brennkammer über eine koaxiale Leitung verbunden sind und/oder daß die Treibstoffmasse (5) in ihrer Zusammensetzung einschließlich Kern/Überzug variiert, oder die Geometrie des Treibstoffs variiert oder Zahl, Größe und Verteilung der Übertrittsöffnungen (14) in der Wand zwi­ schen Brennkammer (2) und Filter (19, 20).6. Gas generator according to one of the preceding claims, characterized in that at least two different ignition means ( 2 ) are connected to a combustion chamber via a coaxial line and / or that the fuel mass ( 5 ) varies in its composition including core / coating, or the geometry of the fuel varies or the number, size and distribution of the transfer openings ( 14 ) in the wall between the combustion chamber ( 2 ) and filter ( 19 , 20 ).
DE19904019877 1990-06-22 1990-06-22 Gas generator for vehicle airbag - with delay channel to retard pressure increase on detonation Granted DE4019877A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904019877 DE4019877A1 (en) 1990-06-22 1990-06-22 Gas generator for vehicle airbag - with delay channel to retard pressure increase on detonation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904019877 DE4019877A1 (en) 1990-06-22 1990-06-22 Gas generator for vehicle airbag - with delay channel to retard pressure increase on detonation

Publications (2)

Publication Number Publication Date
DE4019877A1 true DE4019877A1 (en) 1992-01-09
DE4019877C2 DE4019877C2 (en) 1992-12-10

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234276C1 (en) * 1992-10-10 1993-11-11 Sk Jagd Und Sportmunitions Gmb Gas generator with ignition and propellant charges - useful for rapid operation of seat belt tightener or air-bag
EP0738631A1 (en) * 1995-04-22 1996-10-23 TEMIC Bayern-Chemie Airbag GmbH Pyrotechnic gas generator with two separated combustion chambers
DE19531667A1 (en) * 1995-04-22 1996-10-24 Temic Bayern Chem Airbag Gmbh Pyrotechnic gas generator with two separate combustion chambers
WO1997023368A1 (en) * 1995-12-22 1997-07-03 Trw Airbag Systems Gmbh & Co.Kg. Gas generator for an airbag system
EP0917996A2 (en) 1997-11-19 1999-05-26 Hygrama Ag Airbag device for a vehicle
AT405386B (en) * 1997-11-19 1999-07-26 Hygrama Ag Airbag apparatus for a vehicle
EP1152929A1 (en) * 1999-02-26 2001-11-14 Automotive Systems Laboratory Inc. Two chamber gas generator
US6626115B2 (en) 2000-02-11 2003-09-30 Trw Airbag Systems Gmbh & Co. Kg Gas generator
DE10240639B3 (en) * 2002-09-03 2004-02-12 Trw Airbag Systems Gmbh & Co. Kg Vehicle airbag gas generator with long cylindrical casing, has external igniter units producing gas which flows into distribution chambers in cylinder
US7237801B2 (en) 2004-08-31 2007-07-03 Automotive Systems Laboratory, Inc. Gas generating system
US7267365B2 (en) 2004-03-10 2007-09-11 Automotive Systems Laboratory, Inc. Inflator
US7641231B2 (en) * 2004-10-26 2010-01-05 Trw Airbag Systems Gmbh Gas generator
US7654565B2 (en) 2005-06-02 2010-02-02 Automotive Systems Laboratory, Inc. Gas generating system
US7762585B2 (en) 2005-06-30 2010-07-27 Automotive Systems Laboratory, Inc. Gas generator
US7806954B2 (en) 2005-11-01 2010-10-05 Automotive Systems Laboratory Inc. Gas generator
US7814838B2 (en) 2004-06-28 2010-10-19 Automotive Systems, Laboratory, Inc. Gas generating system
US8376400B2 (en) 2006-04-21 2013-02-19 Tk Holdings, Inc. Gas generating system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19541924A1 (en) * 1995-11-10 1997-05-15 Diehl Gmbh & Co Two stage gas generator for vehicle occupant safety airbag
DE19544784C2 (en) * 1995-11-30 2003-02-13 Hs Tech & Design Pyrotechnic gas generator
DE102014016521A1 (en) 2014-11-10 2016-05-12 PYRAFOR GmbH Pyrotechnic gas generator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532358A (en) * 1968-07-22 1970-10-06 Chrysler Corp Inflatable device
US4896898A (en) * 1988-09-13 1990-01-30 Trw Vehicle Safety Systems Inc. Igniter for an inflatable occupant restraint

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532358A (en) * 1968-07-22 1970-10-06 Chrysler Corp Inflatable device
US4896898A (en) * 1988-09-13 1990-01-30 Trw Vehicle Safety Systems Inc. Igniter for an inflatable occupant restraint

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234276C1 (en) * 1992-10-10 1993-11-11 Sk Jagd Und Sportmunitions Gmb Gas generator with ignition and propellant charges - useful for rapid operation of seat belt tightener or air-bag
EP0738631A1 (en) * 1995-04-22 1996-10-23 TEMIC Bayern-Chemie Airbag GmbH Pyrotechnic gas generator with two separated combustion chambers
DE19531667A1 (en) * 1995-04-22 1996-10-24 Temic Bayern Chem Airbag Gmbh Pyrotechnic gas generator with two separate combustion chambers
US5799973A (en) * 1995-04-22 1998-09-01 Temic Bayern-Chemie Airbag Gmbh Pyrotechnic gas generator with two separate combustion chambers
WO1997023368A1 (en) * 1995-12-22 1997-07-03 Trw Airbag Systems Gmbh & Co.Kg. Gas generator for an airbag system
EP0917996A2 (en) 1997-11-19 1999-05-26 Hygrama Ag Airbag device for a vehicle
AT405386B (en) * 1997-11-19 1999-07-26 Hygrama Ag Airbag apparatus for a vehicle
EP1152929A4 (en) * 1999-02-26 2004-11-17 Automotive Systems Lab Two chamber gas generator
EP1152929A1 (en) * 1999-02-26 2001-11-14 Automotive Systems Laboratory Inc. Two chamber gas generator
US6626115B2 (en) 2000-02-11 2003-09-30 Trw Airbag Systems Gmbh & Co. Kg Gas generator
DE10240639B3 (en) * 2002-09-03 2004-02-12 Trw Airbag Systems Gmbh & Co. Kg Vehicle airbag gas generator with long cylindrical casing, has external igniter units producing gas which flows into distribution chambers in cylinder
US7137339B2 (en) 2002-09-03 2006-11-21 Trw Airbag Systems Gmbh Gas generator
US7267365B2 (en) 2004-03-10 2007-09-11 Automotive Systems Laboratory, Inc. Inflator
US7814838B2 (en) 2004-06-28 2010-10-19 Automotive Systems, Laboratory, Inc. Gas generating system
US7237801B2 (en) 2004-08-31 2007-07-03 Automotive Systems Laboratory, Inc. Gas generating system
US7641231B2 (en) * 2004-10-26 2010-01-05 Trw Airbag Systems Gmbh Gas generator
US7654565B2 (en) 2005-06-02 2010-02-02 Automotive Systems Laboratory, Inc. Gas generating system
US7762585B2 (en) 2005-06-30 2010-07-27 Automotive Systems Laboratory, Inc. Gas generator
US7806954B2 (en) 2005-11-01 2010-10-05 Automotive Systems Laboratory Inc. Gas generator
US8376400B2 (en) 2006-04-21 2013-02-19 Tk Holdings, Inc. Gas generating system

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