EP1443296B1 - Disconnecting device activated by a pyrotechnically actuated piston - Google Patents

Disconnecting device activated by a pyrotechnically actuated piston Download PDF

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Publication number
EP1443296B1
EP1443296B1 EP04001764A EP04001764A EP1443296B1 EP 1443296 B1 EP1443296 B1 EP 1443296B1 EP 04001764 A EP04001764 A EP 04001764A EP 04001764 A EP04001764 A EP 04001764A EP 1443296 B1 EP1443296 B1 EP 1443296B1
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EP
European Patent Office
Prior art keywords
housing
locking
force
latching pin
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04001764A
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German (de)
French (fr)
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EP1443296A1 (en
Inventor
Uwe Brede
Horst Dr. Laucht
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.)
ZF Airbag Germany GmbH
Delphi Technologies Inc
Original Assignee
TRW Airbag Systems GmbH
Delphi Technologies Inc
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Filing date
Publication date
Application filed by TRW Airbag Systems GmbH, Delphi Technologies Inc filed Critical TRW Airbag Systems GmbH
Publication of EP1443296A1 publication Critical patent/EP1443296A1/en
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Publication of EP1443296B1 publication Critical patent/EP1443296B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/006—Explosive bolts; Explosive actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/19—Pyrotechnical actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions

Definitions

  • the invention relates to a pyromechanical separating element, as for example in the EP 1 162 333 A1 , in the US 4,860,698 or in the DE 43 26 737 C1 is described.
  • Separating elements are known which are driven by pyrotechnic fuels, which are usually constructed in the form of screws and provided with a gas-evolving charge in a specially shaped cavity.
  • An ignition element which can be triggered electrically or mechanically ignites this pyrotechnic substance as required, which generates a very high pressure and tears the screw apart at a certain pre-weakened predetermined breaking point.
  • the problem with these screws is usually in normal operation, in which mechanical assemblies are to be held together with a certain holding force. By Temperaturatmungsvor réelle and mechanical alternating loads usually represent these predetermined breaking points an unwanted weakening for long-term operation. It solves this problem with the fact that the residual wall thickness of the predetermined breaking point is oversized.
  • the invention is based on the object to develop a pyromechanical separating element which defines the setting of the separation force at a desired triggering allowed depending on the task and which at the same time consists of a small number of individual parts. According to the invention, this object is solved by the features of claim 1.
  • An essential feature is the Use of already hermetically sealed pyrotechnic pressure elements and the introduction of a special construction element that allows the adjustment of the separation force at a desired triggering defined depending on the task.
  • This design element according to the invention is a locking and force limiting element with which the latch bolt is anchored to the housing.
  • the locking and force limiting element is a plate spring with preferably crown-shaped incisions, which sits in the latched state both in a Verrastungsbolts in Verrastungsbolzen and in a housing groove.
  • the locking and force limiting element may also be a sheet-metal ring or a spring ring which, in the latched state, is seated both in a latch bolt groove and in a housing groove.
  • the locking and force limiting element is a radial projection on the latch bolt, which engages in a housing groove on the housing.
  • a recessed in a groove sealing ring is arranged on the outer circumference of the Verrastungsbolzens.
  • Fig. 1 shows the inventive pyromechanical separating element installed in a pipe clamp, which should be solved if necessary.
  • the pyromechanical separating element consists essentially of the housing 1 in which the pyrotechnic pressure element 2 is inserted via an insulating body 3, the electrical connector system 4, the latch bolt 5, the retaining rings 6, 7 and the locking and force limiting element 8.
  • This locking and force limiting element 8 can be executed differently.
  • this locking and force limiting element 8 is designed as a plate spring with crown-shaped incisions. This element is seated in the latched state in the Verrastungsbolts groove 9 and in the housing groove 10. If trying to pull the locking pin 5 and the housing 1 apart, so locks the locking and force limiting element 8. Only when overcoming a force caused by the spring tension of this Element and by the geometric shape of the locking and force limiting element 8 and the grooves 9, 10 is set, the latch bolt 5 can be pulled out of the housing 1.
  • the two clamp ends 11, 12, which are firmly connected to the pyromechanical separating element, are held even under high normal mechanical loads that want to pull the clamp together or pull apart. Only in the case of a deliberate separation, z. B. by emergency situations or overload situations, the connected via the electrical connector system 4 pyrotechnic pressure element 2 is subjected to an electrical shock, the pyrotechnic pressure element 2 ignited and generated in the drive volume 19 by the combustion of the pyrotechnic substance high drive pressure, which in turn presses on the latch bolt 5.
  • the force resulting from the pressure and the surface of Verrastungsbolzens 5 is on exceeding the holding force of the locking and force limiting element 8 in a position to separate latch bolt 5 and the housing 1.
  • the retaining rings 6, 7 have to ensure in this embodiment that the two parts remain firmly fixed to the clamp ends and can not fly away.
  • the locking and force limiting element 8 is deformed in such a way that the edges of the housing groove 10 and the locking bolt groove 9 shear off the cup spring crown elements.
  • the locking and force limiting element 8 is designed as a sheet metal ring.
  • a direct punching of the sheet metal ring is achieved in overcoming the Ausziehwiderstandes also on the resultant of the drive pressure of the pyrotechnic pressure element 2 extraction force.
  • Figure 3 shows another embodiment of the locking and force limiting element 8 as a spring ring.
  • the spring tension and groove shape determines both the height of the holding force and the Ausziehwiderstandes.
  • FIG. 4 shows another embodiment of the separating element according to the invention.
  • the latching pin 5 is designed such that it presses against the shoulder of the housing groove 16 during assembly and is then deformed with a high pressing force. This process is in principle a kind of riveting.
  • the configuration of the groove 17 and the projection 18 and the type of material execution allow to set different Verrastungs generally.
  • the projection 18 in this case represents the locking and force limiting element 8.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Air Bags (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

The Pyro-mechanical separation element has a hermetically sealed pyrotechnical pressure element (2) installed in a housing (1) with a gas propelled pyrotechnical charge and a latching bolt (5) separated from the charge by a drive volume (19) and inserted into the housing. First and second attachment points are arranged on the housing and on the latching bolt, which is anchored on the housing by a locking and force-limiting element (8).

Description

Die Erfindung betrifft ein pyromechanisches Trennelement, wie es beispielsweise in der EP 1 162 333 A1 , in der US 4,860,698 oder in der DE 43 26 737 C1 beschrieben ist.The invention relates to a pyromechanical separating element, as for example in the EP 1 162 333 A1 , in the US 4,860,698 or in the DE 43 26 737 C1 is described.

Bekannt sind mit pyrotechnischen Brennstoffen angetriebene Trennelemente, die meist in Form von Schrauben aufgebaut und in einem speziell ausgeformten Hohlraum mit einer gasentwickelnden Ladung versehen sind. Ein elektrisch oder mechanisch auslösbares Anzündelement zündet nach Bedarf diesen pyrotechnischen Stoff, der einen sehr hohen Druck erzeugt und die Schraube an einer bestimmten vorgeschwächten Sollbruchstelle auseinanderreißt. Die Problematik bei diesen Schrauben besteht in der Regel im Normalbetrieb, bei dem mechanische Baugruppen mit einer bestimmten Haltekraft zusammengehalten werden sollen. Durch Temperaturatmungsvorgänge und mechanische Wechselbelastungen stellen in der Regel diese Sollbruchstellen einen ungewollte Schwächung für den Langzeitbetrieb dar. Man löst dieses Problem damit, dass die Restwandstärke der Sollbruchstelle überdimensioniert wird. Dies hat jedoch wiederum zur Folge, dass bei der Trennung sehr hohe Drücke benötigt werden. Es gibt jedoch viele Anwendungen bei denen Trennelemente lediglich zwei Bauelemente zusammenhalten sollen und die normalen Betriebskräfte nicht sehr hoch sind. Bei Trennschrauben mit eingearbeiteten Sollbruchstellen müssen ebenfalls die Anzündelemente und die Ladungen gegen den Hochdruck so eingebaut werden, dass bei dem Trennvorgang nicht der Zündmechanismus herausgeschleudert wird.Separating elements are known which are driven by pyrotechnic fuels, which are usually constructed in the form of screws and provided with a gas-evolving charge in a specially shaped cavity. An ignition element which can be triggered electrically or mechanically ignites this pyrotechnic substance as required, which generates a very high pressure and tears the screw apart at a certain pre-weakened predetermined breaking point. The problem with these screws is usually in normal operation, in which mechanical assemblies are to be held together with a certain holding force. By Temperaturatmungsvorgänge and mechanical alternating loads usually represent these predetermined breaking points an unwanted weakening for long-term operation. It solves this problem with the fact that the residual wall thickness of the predetermined breaking point is oversized. However, this in turn means that very high pressures are required during the separation. However, there are many applications where separators are to hold together only two components and the normal operating forces are not very high. For release screws with incorporated break points, the ignition elements and the charges must also be installed against the high pressure so that in the separation process, not the ignition mechanism is ejected.

Der Erfindung liegt die Aufgabe zu Grunde, ein pyromechanisches Trennelement zu entwickeln, welches die Einstellung der Trennkraft bei einer gewollten Auslösung definiert je nach Aufgabenstellung erlaubt und welches zugleich aus einer geringen Anzahl an Einzelteilen besteht. Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst. Ein wesentliches Merkmal ist der Einsatz von bereits hermetisch dichten pyrotechnischen Druckelementen und die Einführung eines besonderen Konstruktionselementes, das die Einstellung der Trennkraft bei einer gewollten Auslösung definiert je nach Aufgabenstellung erlaubt. Dieses Konstruktionselement ist erfindungsgemäß ein Arretierungs- und Kraftbegrenzungselement mit dem der Verrastungsbolzen am Gehäuse verankert ist.The invention is based on the object to develop a pyromechanical separating element which defines the setting of the separation force at a desired triggering allowed depending on the task and which at the same time consists of a small number of individual parts. According to the invention, this object is solved by the features of claim 1. An essential feature is the Use of already hermetically sealed pyrotechnic pressure elements and the introduction of a special construction element that allows the adjustment of the separation force at a desired triggering defined depending on the task. This design element according to the invention is a locking and force limiting element with which the latch bolt is anchored to the housing.

In einer bevorzugten Ausführungsform ist das Arretierungs- und Kraftbegrenzungselement eine Tellerfeder mit bevorzugt kronenförmigen Einschnitten, welche im verrasteten Zustand sowohl in einer Verrastungsbolzennut im Verrastungsbolzen als auch in einer Gehäusenut sitzt.In a preferred embodiment, the locking and force limiting element is a plate spring with preferably crown-shaped incisions, which sits in the latched state both in a Verrastungsbolts in Verrastungsbolzen and in a housing groove.

Alternativ kann das Arretierungs- und Kraftbegrenzungselement auch ein Blechring oder ein Federring sein, der im verrasteten Zustand sowohl in einer Verrastungsbolzennut als auch in einer Gehäusenut sitzt.Alternatively, the locking and force limiting element may also be a sheet-metal ring or a spring ring which, in the latched state, is seated both in a latch bolt groove and in a housing groove.

In einer anderen Ausführungsform ist das Arretierungs- und Kraftbegrenzungselement eine radiale Auskragung am Verrastungsbolzen, die in eine Gehäusenut am Gehäuse eingreift.In another embodiment, the locking and force limiting element is a radial projection on the latch bolt, which engages in a housing groove on the housing.

Vorteilhafterweise ist auf dem Außenumfang des Verrastungsbolzens ein in einer Nut eingelassener Dichtungsring angeordnet.Advantageously, a recessed in a groove sealing ring is arranged on the outer circumference of the Verrastungsbolzens.

Weitere Merkmale der Erfindung ergeben sich aus den Figuren, die nachfolgend beschrieben sind. Es zeigt:

Fig. 1
eine Ausführungsform eines pyromechanischen Trennelements mit einer Tellerfeder mit kronenförmigen Einschnitten als Arretierungs- und Kraftbegrenzungselement,
Fig. 2
eine Ausführungsform analog Fig. 1, jedoch mit einem Blechring als Arretierungs- und Kraftbegrenzungselement,
Fig. 3
eine Ausführungsform analog Figur 1, jedoch mit einem Federring als Arretierungs- und Kraftbegrenzungselement und
Fig. 4
eine Ausführungsform analog Figur 1, jedoch mit einer radialen Auskragung am Verrastungsbolzen als Arretierungs- und Kraftbegrenzungselement.
Further features of the invention will become apparent from the figures, which are described below. It shows:
Fig. 1
an embodiment of a pyromechanical separating element with a plate spring with crown-shaped incisions as a locking and force-limiting element,
Fig. 2
an embodiment analogous to FIG. 1, but with a sheet-metal ring as a locking and force-limiting element,
Fig. 3
an embodiment analogous to Figure 1, but with a spring ring as Arretierungs- and force limiting element and
Fig. 4
an embodiment analogous to Figure 1, but with a radial projection on Verrastungsbolzen as locking and force limiting element.

Fig. 1 zeigt das erfindungsgemäße pyromechanische Trennelement eingebaut in eine Rohrschelle, die im Bedarfsfall gelöst werden soll.Fig. 1 shows the inventive pyromechanical separating element installed in a pipe clamp, which should be solved if necessary.

Das pyromechanische Trennelement besteht im wesentlichen aus dem Gehäuse 1 in welches das pyrotechnische Druckelement 2 über einen Isolierkörper 3 eingesetzt ist, dem elektrischen Steckersystem 4, dem Verrastungsbolzen 5, den Sicherungsringen 6, 7 und dem Arretierungs- und Kraftbegrenzungselement 8. Dieses Arretierungs- und Kraftbegrenzungselement 8 kann unterschiedlich ausgeführt werden. Im Ausführungsbeispiel 1 (Fig. 1) ist dieses Arretierungs- und Kraftbegrenzungselement 8 als Tellerfeder mit kronenförmigen Einschnitten ausgeführt. Dieses Element sitzt im verrasteten Zustand in der Verrastungsbolzennut 9 und in der Gehäusenut 10. Wird versucht, den Verrastungsbolzen 5 und das Gehäuse 1 auseinander zu ziehen, so sperrt das Arretierungs- und Kraftbegrenzungselement 8. Erst beim Überwinden einer Kraft, die durch die Federspannung dieses Elementes und durch die geometrische Form des Arretierungs- und Kraftbegrenzungselements 8 und der Nuten 9, 10 eingestellt wird, kann der Verrastungsbolzen 5 aus dem Gehäuse 1 gezogen werden.The pyromechanical separating element consists essentially of the housing 1 in which the pyrotechnic pressure element 2 is inserted via an insulating body 3, the electrical connector system 4, the latch bolt 5, the retaining rings 6, 7 and the locking and force limiting element 8. This locking and force limiting element 8 can be executed differently. In the exemplary embodiment 1 (FIG. 1), this locking and force limiting element 8 is designed as a plate spring with crown-shaped incisions. This element is seated in the latched state in the Verrastungsbolts groove 9 and in the housing groove 10. If trying to pull the locking pin 5 and the housing 1 apart, so locks the locking and force limiting element 8. Only when overcoming a force caused by the spring tension of this Element and by the geometric shape of the locking and force limiting element 8 and the grooves 9, 10 is set, the latch bolt 5 can be pulled out of the housing 1.

Die beiden Schellenenden 11, 12, die mit dem pyromechanischen Trennelement fest verbunden sind, werden selbst bei hohen normalbedingten mechanischen Belastungen, die die Schelle zusammen- oder auseinanderziehen wollen, festgehalten. Erst im Falle einer gewollten Trennung, z. B. durch Notsituationen oder Überlastsituationen, wird das über das elektrische Steckersystem 4 verbundene pyrotechnische Druckelement 2 mit einem elektrischen Stromstoß beaufschlagt, das pyrotechnische Druckelement 2 gezündet und in dem Antriebsvolumen 19 ein durch die Verbrennung des pyrotechnischen Stoffes hoher Antriebsdruck erzeugt, der wiederum auf den Verrastungsbolzen 5 drückt.The two clamp ends 11, 12, which are firmly connected to the pyromechanical separating element, are held even under high normal mechanical loads that want to pull the clamp together or pull apart. Only in the case of a deliberate separation, z. B. by emergency situations or overload situations, the connected via the electrical connector system 4 pyrotechnic pressure element 2 is subjected to an electrical shock, the pyrotechnic pressure element 2 ignited and generated in the drive volume 19 by the combustion of the pyrotechnic substance high drive pressure, which in turn presses on the latch bolt 5.

Die aus dem Druck und der Fläche des Verrastungsbolzens 5 resultierende Kraft ist bei Überschreiten der Haltekraft des Arretierungs- und Kraftbegrenzungselements 8 in der Lage, Verrastungsbolzen 5 und das Gehäuse 1 zu trennen. Die Sicherungsringe 6, 7 haben in dieser Ausführungsform dafür zu sorgen, dass die beiden Teile fest an den Schellenenden fixiert bleiben und nicht wegfliegen können.The force resulting from the pressure and the surface of Verrastungsbolzens 5 is on exceeding the holding force of the locking and force limiting element 8 in a position to separate latch bolt 5 and the housing 1. The retaining rings 6, 7 have to ensure in this embodiment that the two parts remain firmly fixed to the clamp ends and can not fly away.

Beim Trennvorgang wird das Arretierungs- und Kraftbegrenzungselement 8 derart verformt, dass die Kanten der Gehäusenut 10 und der Verrastungsbolzennut 9 die Tellerfederkronenelemente abscheren.During the separation process, the locking and force limiting element 8 is deformed in such a way that the edges of the housing groove 10 and the locking bolt groove 9 shear off the cup spring crown elements.

In Fig. 2 ist das Arretierungs- und Kraftbegrenzungselement 8 als Blechring ausgeführt. Bei diesem Element wird bei dem Überwinden des Ausziehwiderstandes ebenfalls über die vom Antriebsdruck des pyrotechnischen Druckelementes 2 resultierende Ausziehkraft eine direkte Stanzung des Blechringes erreicht.In Fig. 2, the locking and force limiting element 8 is designed as a sheet metal ring. In this element, a direct punching of the sheet metal ring is achieved in overcoming the Ausziehwiderstandes also on the resultant of the drive pressure of the pyrotechnic pressure element 2 extraction force.

Figur 3 zeigt eine weitere Ausführungsform des Arretierungs- und Kraftbegrenzungselements 8 als Federring. Hier bestimmt die Federspannung und Nutenform sowohl die Höhe der Haltekraft als auch die des Ausziehwiderstandes.Figure 3 shows another embodiment of the locking and force limiting element 8 as a spring ring. Here, the spring tension and groove shape determines both the height of the holding force and the Ausziehwiderstandes.

Nach Zusammenstecken des Gehäuses 1 mit dem Verrastungsbolzen 5, in dessen Nut 9 sich das Arretierungs- und Kraftbegrenzungselement 8 befindet, schnappt dieses in die im Gehäuse 1 vorgesehene Nut 10 ein und sperrt das Herausziehen. Das pyromechanische Trennelement kann nun in die Schellenenden 11, 12, eingesetzt werden und unter Zusammendrücken mit den Sicherungsringen 6, 7 befestigt werden.After mating of the housing 1 with the latch bolt 5, in the groove 9, the locking and force limiting element 8 is located, this snaps into the groove 10 provided in the housing 1 and locks the pulling out. The pyromechanical separating element can now be inserted into the clamp ends 11, 12, and be secured by compression with the retaining rings 6, 7.

In Figur 4 ist eine andere Ausführungsform des erfindungsgemäßen Trennelements gezeigt. Der Verrastungsbolzen 5 ist derart ausgeführt, dass er beim Zusammenfügen gegen die Schulter der Gehäusenut 16 drückt und dann mit einer hohen Presskraft deformiert wird. Dieser Vorgang stellt im Prinzip eine Art Vernietung dar. Die Ausgestaltung der Nut 17 und der Auskragung 18 und die Art der Materialausführung erlauben unterschiedliche Verrastungskräfte einzustellen. Die Auskragung 18 stellt in diesem Fall das Arretierungs- und Kraftbegrenzungselement 8 dar.FIG. 4 shows another embodiment of the separating element according to the invention. The latching pin 5 is designed such that it presses against the shoulder of the housing groove 16 during assembly and is then deformed with a high pressing force. This process is in principle a kind of riveting. The configuration of the groove 17 and the projection 18 and the type of material execution allow to set different Verrastungskräfte. The projection 18 in this case represents the locking and force limiting element 8.

Es ist vorteilhaft zur Abdichtung des Antriebsvolumens 19 auf dem Außenumfang des Verrastungsbolzens 5 einen in einer Nut eingelassenen Dichtungsring 20 anzuordnen. Ebenso sollte auf dem Isolierkörper 3 ein Dichtungsring angeordnet werden.It is advantageous for sealing the drive volume 19 on the outer circumference of the Verrastungsbolzens 5 to arrange a recessed in a groove seal ring 20. Likewise, a sealing ring should be arranged on the insulating body 3.

Claims (5)

  1. Pyromechanical separating element having a hermetically sealed pyrotechnic pressure element (2), which is installed in a housing (1) and has a gas-forming pyrotechnic charge, and a releasable latching pin (5) which is separated from the pressure element (2) by a driving volume (19) and is inserted into the housing (1), wherein a first securing point is arranged at the housing (1) and a second securing point is arranged at the latching pin (5), and the latching pin (5) is anchored at the housing (1) via a locking and force-limiting element (8), characterised in that the latching pin (5) and the housing (1) can be separated by the pyrotechnical charge on exceeding the holding force of the locking and force-limiting element (8).
  2. Separating element according to claim 1, characterised in that the locking and force-limiting element (8) is a plate spring with preferably crown-shaped incisions which is seated in the latched state both in a latching pin groove (9) in the latching pin (5) and in a housing groove (10).
  3. Separating element according to claim 1, characterised in that the locking and force-limiting element (8) is a sheet-metal ring or a spring ring which is seated in the latched state both in a latching pin groove (9) in the latching pin (5) and in a housing groove (10).
  4. Separating element according to claim 1, characterised in that the locking and force-limiting element (8) is a radial projection (18) at the latching pin (5) that engages into a housing groove (16) at the housing (1).
  5. Separating element according to any one of the claims 1 to 4, characterised in that a sealing ring (29) which is let into a groove is arranged on the outer circumference of the latching pin (5).
EP04001764A 2003-01-29 2004-01-28 Disconnecting device activated by a pyrotechnically actuated piston Expired - Lifetime EP1443296B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10303377A DE10303377A1 (en) 2003-01-29 2003-01-29 Pyromechanical separator
DE10303377 2003-01-29

Publications (2)

Publication Number Publication Date
EP1443296A1 EP1443296A1 (en) 2004-08-04
EP1443296B1 true EP1443296B1 (en) 2007-08-08

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US (1) US7188558B2 (en)
EP (1) EP1443296B1 (en)
AT (1) ATE369538T1 (en)
DE (2) DE10303377A1 (en)

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US20040255811A1 (en) 2004-12-23
DE502004004540D1 (en) 2007-09-20
DE10303377A1 (en) 2004-08-05
ATE369538T1 (en) 2007-08-15
US7188558B2 (en) 2007-03-13
EP1443296A1 (en) 2004-08-04

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