EP0178595B1 - Dismountable holding device for lamps in headlights - Google Patents

Dismountable holding device for lamps in headlights Download PDF

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Publication number
EP0178595B1
EP0178595B1 EP85112876A EP85112876A EP0178595B1 EP 0178595 B1 EP0178595 B1 EP 0178595B1 EP 85112876 A EP85112876 A EP 85112876A EP 85112876 A EP85112876 A EP 85112876A EP 0178595 B1 EP0178595 B1 EP 0178595B1
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EP
European Patent Office
Prior art keywords
reflector
lamp
holding device
inclined surface
clamp
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
Application number
EP85112876A
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German (de)
French (fr)
Other versions
EP0178595A1 (en
Inventor
Max Pouce
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.)
NEIMAN
Original Assignee
Neiman SA
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Publication date
Application filed by Neiman SA filed Critical Neiman SA
Publication of EP0178595A1 publication Critical patent/EP0178595A1/en
Application granted granted Critical
Publication of EP0178595B1 publication Critical patent/EP0178595B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/196—Wire spring attachments

Definitions

  • the invention relates to a removable holding device for headlight bulbs, in which the light bulbs are provided with an insert collar with angled fitting elements for positioning the light bulb in an opening in the reflector of the headlight.
  • Such assemblies consisting of an incandescent lamp and reflector are used in particular in automotive headlights.
  • the light bulb must be easy to replace in the event of a defect, but must also be securely held while driving.
  • a piano wire clip is generally used, which is bent in a more or less complicated form and at least at one point the part of the incandescent lamp protruding from the reflector at at least one point, i.e. on the insert collar or on the lamp base, elastically supported.
  • Holding devices of this known type are associated with some difficulties which are related to the elasticity of the connection between the incandescent lamp and the reflector.
  • the constant elastic pressure generally exerted on a very small area of the reflector causes a deformation in the contact zone, as a result of which the effectiveness of the holder and the operating behavior of the headlamp as a whole are impaired.
  • the object of the invention is to improve a device of the type mentioned in such a way that it is simple and economical to manufacture, safe and durable in operation and exerts a very low pressure on the reflector.
  • This object is achieved in that the device has an elastic clip which is provided with essentially rigid ends oriented at right angles to the lamp axis, a clip end being held between at least one cam bevel surface on the reflector and the insert collar of the incandescent lamp by a wedge or clamping action or the related cam bevels are arranged on the insert collar.
  • the effective part of the holder consists of essentially rigid elements for support between the insert collar and the inclined surface on the reflector cam.
  • This bracket automatically adjusts itself to any deviations in the lamp size or the reflector opening due to the wedge or clamping action against the oblique cam, the residual pressure on the insert collar only making up a relatively small fraction of the force acting on the rigid clamp ends.
  • the bulb is held securely in the reflector opening because the forces that tend to push the bulb out or tilt it out of the opening are immediately counteracted by the rigid system of the assembly consisting of the lamp, clamping element and insert collar.
  • the reflector 1 has a central opening 2, in which an incandescent lamp is fastened with an insert collar 3 in a certain angular position.
  • the reflector 1 has outer projections or cams 4, each with an inclined surface 5 oriented towards the opening 2, an essentially rigid clamp end 6 being clamped or wedged between the insert collar 3 of the incandescent lamp and the cam bevel 5.
  • the action of the clip on the clip end 6 takes place essentially at right angles to the lamp axis, at least as indicated by the arrow F.
  • any force used to move or tilt the incandescent lamp, ie its insert collar 3, increases the clamping or wedge effect of the clamp end 6 against the cam bevel surface 5, so that the incandescent lamp is properly held in place, particularly in the case of vibrations such as occur in motor vehicles.
  • the force acting on the end of the clamp 6 in the direction of the arrow F is transmitted to the inclined surface 5 only by its right-angled component, this component being in any case less than the force F.
  • the latter can be chosen to be low because it is not directly involved in the bracket. It can thus be seen that the component of the force F acting at right angles on the insert collar 3 can be very low, with the wedge or clamping action of the clamp end 6 against the inclined surface 5 achieving a secure and permanent holding.
  • the clip consists of a piano wire bracket 7 with two diverging arms 8, which is pivotally mounted on the reflector 1 in the region 9 between the arms 8 about an axis or a pin 10.
  • the arms 8 each open into an essentially rigid end 6, which can be prepared by simply bending the wire of the clamp 7.
  • the clamp 7 Before inserting an incandescent lamp, the clamp 7 is in the rest position and swung out to release the reflector opening 2.
  • the incandescent lamp is inserted into the opening 2 and brought into the correct angular position using suitable aids, for example in a known manner by means of a lamp tongue which engages in a groove in the opening 2; The tongue and groove are not shown here.
  • the bracket or the clamp 7 is pivoted about the axis 10 until its ends 6 come into abutment against an inclined surface 11 on the outside of the cam 4 on the reflector 1.
  • the present invention is not limited to the elastic embodiment described above.
  • the elastic element can be replaced by fasteners in the form of horizontal or vertical tilting or swivel locks, with at least one semi-rigid end that is essentially perpendicular to the lamp axis between at least one inclined surface on the reflector cam and the insert collar of the incandescent lamp has a wedge or clamping effect brings about or the inclined surface and the bolt end on the reflector or on the fastener can be reversed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung bezieht sich auf eine abnehmbare Haltevorrichtung für Scheinwerfer-Glühlampen, bei der die Glühlampen mit einem Einsatzbund mit abgewinkelten Paßelementen zur Positionierung der Glühlampe in einer Öffnung im Reflektor des Scheinwerfers versehen sind.The invention relates to a removable holding device for headlight bulbs, in which the light bulbs are provided with an insert collar with angled fitting elements for positioning the light bulb in an opening in the reflector of the headlight.

Solche aus Glühlampe und Reflektor bestehende Baugruppen werden insbesondere in Automobilscheinwerfern verwendet. Die Glühlampe muß bei einem Defekt leicht auszuwechseln sein, gleichzeitig aber auch während der Fahrt sicher festgehalten werden. Bei den nach dem bisherigen Stand der Technik bekannten Haltevorrichtungen wird im allgemeinen eine Klavierdrahtklammer verwendet, die in mehr oder weniger komplizierter Form zurechtgebogen ist und an mindestens einer Stelle den aus dem Reflektor vorstehenden Teil der Glühlampe an mindestens einem Punkt, d.h. am Einsatzbund oder am Lampensockel, elastisch abstützt.Such assemblies consisting of an incandescent lamp and reflector are used in particular in automotive headlights. The light bulb must be easy to replace in the event of a defect, but must also be securely held while driving. In the holding devices known according to the prior art, a piano wire clip is generally used, which is bent in a more or less complicated form and at least at one point the part of the incandescent lamp protruding from the reflector at at least one point, i.e. on the insert collar or on the lamp base, elastically supported.

Haltevorrichtungen dieser bekannten Art sind mit einigen Schwierigkeiten verbunden, die mit der Elastizität der Verbindung zwischen Glühlampe und Reflektor im Zusammenhang stehen. Insbesondere bei Kunststoffreflektoren bewirkt der ständige, im allgemeinen auf eine sehr kleine Fläche des Reflektors ausgeübte elastische Druck eine Verformung in der Berührungszone, wodurch die Wirksamkeit der Halterung und das Betriebsverhalten des Scheinwerfers als Ganzes beeinträchtigt werden. Um dieser Schwierigkeit zu begegnen, war es allgemein üblich, die Berührungs- oder Abstützungszone am Reflektor zu verstärken, Kunststoffe mit besseren mechanischen Eigenschaften zu verwenden oder die Öffnung im Reflektor mit einem Metallring zu versehen, auf welchem der Einsatzbund der Lampe ruhte. Alle derartigen Hilfsmaßnahmen bedingen einer Preis- und Gewichtserhöhung sowie im allgemeinen einer Verkleinerung der Nutzfläche des Reflektors.Holding devices of this known type are associated with some difficulties which are related to the elasticity of the connection between the incandescent lamp and the reflector. In the case of plastic reflectors in particular, the constant elastic pressure generally exerted on a very small area of the reflector causes a deformation in the contact zone, as a result of which the effectiveness of the holder and the operating behavior of the headlamp as a whole are impaired. In order to overcome this difficulty, it was common practice to reinforce the contact or support zone on the reflector, to use plastics with better mechanical properties, or to provide the opening in the reflector with a metal ring on which the insert collar of the lamp rested. All such auxiliary measures result in an increase in price and weight and generally in a reduction in the usable area of the reflector.

Aus der französischen Offenlegungsschrift 2 241 966 ist es bekannt, zwischen einer Nockenschrägfläche am Einsatzbund und dem Reflektor eine Keil- oder Klemmverbindung zu schaffen. Dagegen geht aus dieser Druckschrift nicht hervor, die Enden eines Bügels oder einer Klammer zur Befestigung zu nutzen.From French laid-open specification 2 241 966 it is known to create a wedge or clamp connection between a cam bevel on the insert collar and the reflector. In contrast, it is not apparent from this document to use the ends of a bracket or a clip for fastening.

Aufgabe der Erfindung ist es eine Vorrichtung der eingangsgenannten Art so zu verbessern, daß sie einfach und wirtschaftlich in der Herstellung, sicher und dauerhaft in der Funktion ist sowie einen sehr niedrigen Druck auf den Reflektor ausübt. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Vorrichtung eine elastische Klammer aufweist, die mit im wesentlichen starren, rechtwinklig zur Lampenachse ausgerichteten Enden versehen ist, wobei ein Klammerende zwischen mindestens einer Nockenschrägfläche am Reflektor und dem Einsatzbund der Glühlampe durch eine Keil- oder Klemmwirkung gehalten ist oder die diesbezüglichen Nockenschrägflächen am Einsatzbund angeordnet sind.The object of the invention is to improve a device of the type mentioned in such a way that it is simple and economical to manufacture, safe and durable in operation and exerts a very low pressure on the reflector. This object is achieved in that the device has an elastic clip which is provided with essentially rigid ends oriented at right angles to the lamp axis, a clip end being held between at least one cam bevel surface on the reflector and the insert collar of the incandescent lamp by a wedge or clamping action or the related cam bevels are arranged on the insert collar.

Bei der erfindungsgemäßen Vorrichtung besteht der wirksame Teil der Halterung aus im wesentlichen starren Elementen zur Abstützung zwischen dem Einsatzbund und der Schrägfläche am Reflektornocken.In the device according to the invention, the effective part of the holder consists of essentially rigid elements for support between the insert collar and the inclined surface on the reflector cam.

Diese Halterung stellt sich bei eventuellen Abweichungen in der Lampengröße oder der Reflektoröffnung durch die Keil- oder Klemmwirkung gegen den schrägen Nocken automatisch ein, wobei der Restdruck auf den Einsatzbund nur einen verhältnismäßig geringen Bruchteil der auf die starren Klammerenden wirkenden Kraft ausmacht. Die Halterung der Glühlampe in der Reflektoröffnung ist zuverlässig gewährleistet, weil den Kräften, die zum Herausdrücken oder Kippen der Glühlampe aus der Öffnung neigen, sofort durch das starre System der aus Lampe, Klemmelement und Einsatzbund bestehenden Baugruppe entgegengewirkt wird.This bracket automatically adjusts itself to any deviations in the lamp size or the reflector opening due to the wedge or clamping action against the oblique cam, the residual pressure on the insert collar only making up a relatively small fraction of the force acting on the rigid clamp ends. The bulb is held securely in the reflector opening because the forces that tend to push the bulb out or tilt it out of the opening are immediately counteracted by the rigid system of the assembly consisting of the lamp, clamping element and insert collar.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angeführt.Advantageous embodiments of the invention are set out in the subclaims.

Die Erfindung ist unter Bezugnahme auf die beiliegende Zeichnung in der Beschreibung erfaßt. Diese Zeichnung enthält:

  • * in Fig. 1 ein Prinzipschema der erfindungsgemäßen Vorrichtung;
  • " in Fig. 2 die Draufsicht auf eine Vorrichtung in einer nicht einschränkend zu wertenden Ausführungsform der Erfindung;
  • * in Fig. 3 eine Schnittdarstellung in der Ebene 111 - 111 nach Fig. 2.
The invention is included in the description with reference to the accompanying drawing. This drawing contains:
  • . * In Figure 1 is a principle diagram of the device according to the invention;
  • "FIG. 2 shows the top view of a device in an embodiment of the invention that is not to be considered as restrictive;
  • * In Figure 3 is a sectional view in the plane. 111 - 111 of Fig. 2.

Wie in Fig. 1 schematisch dargestellt, weist der Reflektor 1 eine zentrale Öffnung 2 auf, in welcher eine Glühlampe mit einem Einsatzbund 3 in einer bestimmten Winkelstellung befestigt wird. Erfindungsgemäß weist der Reflektor 1 äußere Vorsprünge oder Nocken 4 mit jeweils einer zur Öffnung 2 hin ausgerichteten Schrägfläche 5 auf, wobei ein im wesentlichen starres Klammerende 6 zwischen dem Einsatzbund 3 der Glühlampe und der Nockenschräge 5 eingeklemmt oder verkeilt wird. Die Wirkung der Klammer auf das Klammerende 6 erfolgt im wesentlichen rechtwinklig zur Lampenachse, zumindest wie durch den Pfeil F angedeutet. Jegliche zum Verschieben oder Kippen der Glühlampe, d.h. ihres Einsatzbundes 3, aufgewendete Kraft verstärkt die Klemm- oder Keilwirkung des Klammerendes 6 gegen die Nockenschrägfläche 5, so daß die Glühlampe besonders bei Erschütterungen, wie sie bei Kraftfahrzeugen vorkommen, einwandfrei festgehalten wird. Darüber hinaus wird die in Pfeilrichtung F auf das Klammerende 6 wirkende Kraft nur durch ihre rechtwinklige Komponente auf die Schrägfläche 5 übertragen, wobei diese Komponente in jedem Falle geringer ist als die Kraft F. Außerdem kann letztere niedrig gewählt werden, denn sie ist nicht direkt an der Halterung beteiligt. Es ist somit erkennbar, daß die rechtwinklig auf den Einsatzbund 3 wirkende Komponente der Kraft F sehr niedrig sein kann, wobei durch die Keil- oder Klemmwirkung des Klammerendes 6 gegen die Schrägfläche 5 eine sichere und dauerhafte Halterung erzielt wird. In dem nicht einschränkend zu wertenden, in Fig. 2 und 3 dargestellten Beispiel besteht die Klammer aus einem Klavierdrahtbügel 7 mit zwei auseinanderlaufenden Armen 8, der im Bereich 9 zwischen den Armen 8 um eine Achse oder einen Zapfen 10 am Reflektor 1 schwenkbar gelagert ist. Die Arme 8 münden jeweils in ein im wesentlichen starres Ende 6, das durch einfaches Zurechtbiegen des Drahtes der Klammer 7 hergerichtet werden kann.As shown schematically in FIG. 1, the reflector 1 has a central opening 2, in which an incandescent lamp is fastened with an insert collar 3 in a certain angular position. According to the invention, the reflector 1 has outer projections or cams 4, each with an inclined surface 5 oriented towards the opening 2, an essentially rigid clamp end 6 being clamped or wedged between the insert collar 3 of the incandescent lamp and the cam bevel 5. The action of the clip on the clip end 6 takes place essentially at right angles to the lamp axis, at least as indicated by the arrow F. Any force used to move or tilt the incandescent lamp, ie its insert collar 3, increases the clamping or wedge effect of the clamp end 6 against the cam bevel surface 5, so that the incandescent lamp is properly held in place, particularly in the case of vibrations such as occur in motor vehicles. In addition, the force acting on the end of the clamp 6 in the direction of the arrow F is transmitted to the inclined surface 5 only by its right-angled component, this component being in any case less than the force F. In addition, the latter can be chosen to be low because it is not directly involved in the bracket. It can thus be seen that the component of the force F acting at right angles on the insert collar 3 can be very low, with the wedge or clamping action of the clamp end 6 against the inclined surface 5 achieving a secure and permanent holding. In the non-limiting example shown in FIGS. 2 and 3, the clip consists of a piano wire bracket 7 with two diverging arms 8, which is pivotally mounted on the reflector 1 in the region 9 between the arms 8 about an axis or a pin 10. The arms 8 each open into an essentially rigid end 6, which can be prepared by simply bending the wire of the clamp 7.

Die Funktion der beschriebenen Haltevorrichtung ist folgende: Vor dem Einsetzen einer Glühlampe befindet sich die Klammer 7 in Ruhelage und zur Freigabe der Reflektoröffnung 2 ausgeschwenkt. Die Glühlampe wird in die Öffnung 2 eingesetzt und mit geeigneten Hilfsmitteln in die richtige Winkelstellung gebracht, beispielsweise auf bekannte Art durch eine Lampenzunge, die in eine Nute in der Öffnung 2 eingreift; Zunge und Nute sind hier nicht dargestellt. Dann wird der Bügel oder die Klammer 7 um die Achse 10 eingeschwenkt, bis ihre Enden 6 jeweils gegen eine Schrägfläche 11 auf der Außenseite des Nockens 4 am Reflektor 1 zu Anlage kommen.The function of the holding device described is as follows: Before inserting an incandescent lamp, the clamp 7 is in the rest position and swung out to release the reflector opening 2. The incandescent lamp is inserted into the opening 2 and brought into the correct angular position using suitable aids, for example in a known manner by means of a lamp tongue which engages in a groove in the opening 2; The tongue and groove are not shown here. Then the bracket or the clamp 7 is pivoted about the axis 10 until its ends 6 come into abutment against an inclined surface 11 on the outside of the cam 4 on the reflector 1.

Durch Zusammendrücken der Arme 8 der Klammer 7 gleiten ihre Enden 6 gegen die Schrägflächen 11; beim weiteren Einschwenken der Klammer 7 genügt es, die Arme 8 loszulassen, sobald die Enden 6 jeweils einer Nockenschrägfläche 5 gegenüberliegen. Durch das Zusammenwirken der Klammerende 6 mit den Schrägflächen 5 unter der Einwirkung der elastischen Kraft F, die zum Spreizen der Klammerarme 8 neigt, wird das Klammerende 6 gegen die Schrägfläche 5 verkeilt, wobei der Rand des Einsatzbundes 3 eingeklemmt wird; letzterer wird, wie vorstehend beschrieben, mit minimaler Kraft gegen den Rand des Reflektors 1 gedrückt.By compressing the arms 8 of the bracket 7, their ends 6 slide against the inclined surfaces 11; when the clamp 7 is pivoted in further, it is sufficient to let go of the arms 8 as soon as the ends 6 each lie opposite an inclined cam surface 5. By the interaction of the clamp end 6 with the inclined surfaces 5 under the action of the elastic force F, which tends to spread the clamp arms 8, the clamp end 6 is wedged against the inclined surface 5, the edge of the insert collar 3 being clamped; the latter, as described above, is pressed against the edge of the reflector 1 with minimal force.

Selbstverständlich beschränkt sich die vorliegende Erfindung nicht auf die vorstehend beschriebene elastische Ausführungsform. Praktisch kann das elastische Element bei Bedarf durch Befestigungselemente in Form von horizontalen oder vertikalen Kipp- oder Schwenkriegeln ersetzt werden, wobei mindestens ein halbstarres und zur Lampenachse im wesentlichen rechtwinklig ausgerichtetes Ende zwischen mindestens einer Schrägfläche am Reflektornocken und dem Einsatzbund der Glühlampe eine Keil- oder Klemmwirkung herbeiführt oder die Schrägfläche und das Riegelende am Reflektor bzw. am Befestigungselement umgekehrt angeordnet sein können.Of course, the present invention is not limited to the elastic embodiment described above. In practice, the elastic element can be replaced by fasteners in the form of horizontal or vertical tilting or swivel locks, with at least one semi-rigid end that is essentially perpendicular to the lamp axis between at least one inclined surface on the reflector cam and the insert collar of the incandescent lamp has a wedge or clamping effect brings about or the inclined surface and the bolt end on the reflector or on the fastener can be reversed.

Claims (3)

1. A dismountable holding device for lamps in a headlight where the lamp is provided with an insertion collar (3) having fitting elements bent at an angle for positioning the lamp in an opening (2) in the reflector (1) of the headlamp, characterized in that the device comprised a resilient clamp (7) which is provided with substantially rigid ends (6) directed at right angles to the axis of the lamp, whereby one clamp end (6) is held between at least one inclined surface of a notch (5) on the reflector (1) and the insertion collar (3) of the lamp by a wedging or clamping action, or the relevant inclined surfaces of a notch (5) are situated on the insertion collar (3).
2. A holding device according to Claim 1, characterized in that the resilient clamp (7) has two arms (8) and is fastened by the region (9) situated between the two arms (8) to the reflector on an axle or a pivot (10) so that it can pivot.
3. A holding device according to Claim 1 and 2, characterized in that the inclined surface of a notch (5) is prolonged on the outside of the reflector (1) by an inclined surface (11) sloping in the opposite direction to the first surface.
EP85112876A 1984-10-19 1985-10-11 Dismountable holding device for lamps in headlights Expired EP0178595B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416020A FR2572164B1 (en) 1984-10-19 1984-10-19 DEVICE FOR HOLDING A REMOVABLE ELECTRIC LAMP IN A REFLECTOR
FR8416020 1984-10-19

Publications (2)

Publication Number Publication Date
EP0178595A1 EP0178595A1 (en) 1986-04-23
EP0178595B1 true EP0178595B1 (en) 1989-05-10

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ID=9308813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112876A Expired EP0178595B1 (en) 1984-10-19 1985-10-11 Dismountable holding device for lamps in headlights

Country Status (3)

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EP (1) EP0178595B1 (en)
DE (1) DE3570116D1 (en)
FR (1) FR2572164B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3713330C2 (en) * 1987-04-21 1993-12-23 Hella Kg Hueck & Co Bulb holder for motor vehicle headlights
DE19911347B4 (en) * 1999-03-15 2004-12-30 NORKA Norddeutsche Kunststoff- und Elektro-Gesellschaft Stäcker mbH & Co. KG Luminaire for an elongated lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE512215A (en) *
FR1529782A (en) * 1967-05-08 1968-06-21 Sev Marchal Improvements to headlamps such as those in motor vehicles
FR2241966A5 (en) * 1973-08-21 1975-03-21 Cibie Projecteurs

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FR2572164A1 (en) 1986-04-25
DE3570116D1 (en) 1989-06-15
EP0178595A1 (en) 1986-04-23
FR2572164B1 (en) 1988-07-22

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