EP0215700B1 - Headlamp and bulb holder - Google Patents

Headlamp and bulb holder Download PDF

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Publication number
EP0215700B1
EP0215700B1 EP86401853A EP86401853A EP0215700B1 EP 0215700 B1 EP0215700 B1 EP 0215700B1 EP 86401853 A EP86401853 A EP 86401853A EP 86401853 A EP86401853 A EP 86401853A EP 0215700 B1 EP0215700 B1 EP 0215700B1
Authority
EP
European Patent Office
Prior art keywords
bulb
reflector
flange
bulb holder
holder
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
EP86401853A
Other languages
German (de)
French (fr)
Other versions
EP0215700A1 (en
Inventor
Patrice Petracchi
Jean Rit
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.)
CNIM Groupe SA
Original Assignee
Fives Cail Babcock SA
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 Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to AT86401853T priority Critical patent/ATE39280T1/en
Publication of EP0215700A1 publication Critical patent/EP0215700A1/en
Application granted granted Critical
Publication of EP0215700B1 publication Critical patent/EP0215700B1/en
Expired legal-status Critical Current

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Classifications

    • 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 present invention relates to lighting projectors in which the lamp, which is provided with a flange, is mounted on a lamp holder comprising a housing for the lamp base, and elastic means bearing on the reflector and acting on the lamp holder are provided to hold the lamp in place by applying the flange to a rear support surface of the reflector provided for this purpose around a central opening of the reflector.
  • a known solution (FR-2 077 665) consists in housing the lamp holder in a chimney integral with the reflector and in keeping it in place by means of a helical spring compressed between the lamp holder and a part arranged telescopically on the door. -lamp and removably fixed in the chimney. This solution is relatively complicated, and leads to significant bulk at the rear of the reflector.
  • the object of the present invention is to provide a lamp holder and means for fixing the lamp holder to the reflector which are very simple and allow rapid (and easy) replacement of the lamp.
  • the headlamp object of the present invention is characterized in that the lamp holder is constituted by a piece of an electrically insulating material which is provided with attached metal elements ensuring electrical contact with the pin or pins of the lamp and possibly with the base or flange of the lamp and the front end of which comprises an annular surface resting on the flange of the lamp, and in that said elastic means consist of one or more elastic fasteners stretched between the reflector and the holder lamp.
  • At least one of the elements ensuring electrical contact with one of the pins of the lamp will be constituted by an elastic blade, said pin being clamped between one end of the blade and a bearing surface of the lamp holder to ensure a mechanical connection. between the lamp and the lamp holder.
  • a metal washer may be fixed, for example by gluing, on the front end of the lamp holder and connected to an electrical conductor to ensure an electrical connection between the conductor and the flange of the lamp clamped between the washer and the surface of the reflector on which it is based.
  • the fixing of the lamp holder on the reflector can be ensured by an elastic bracket articulated on the reflector and overlapping the lamp holder. A ramp will then be formed on the rear end of the lamp holder to facilitate the positioning of the stirrup, this ramp leading to a V-shaped notch in which the transverse part of the stirrup will be housed.
  • This fixing could also be carried out by means of helical or leaf springs, one end of which is fixed or articulated on the reflector and the other end of which is provided with a claw which hooks onto the rear of the lamp holder.
  • Figure 1 is a sectional view, through a diametral plane, of the central part of a projector reflector and the lamp holder fixed thereon;
  • FIG. 2 is a sectional view of the assembly of FIG. 1, the cutting being carried out in a plane perpendicular to that of FIG. 1.
  • the reference number 10 designates a reflector which comprises in its central part a cylindrical appendage 12 closed by a disc 14 pierced with an opening 16 for the passage of a lamp 18.
  • This comprises a flange 20 applied on the disc 14 and provided with one or more pins 22 received in holes drilled in the disc to ensure the correct positioning of the lamp on the reflector.
  • the base 24 and the single pin 26 of the lamp are placed in a housing provided for this purpose in a lamp holder 28.
  • This consists of a cylindrical piece of an electrically insulating material which can be manufactured, for example, by molding a plastic material.
  • a metal washer 30 is fixed, for example by gluing, on the front end, adjacent to the reflector, of the lamp holder. This washer is in contact with the flange 20 of the blade and provides an electrical connection between the latter and a conductive wire 32 welded to the washer.
  • a metal lamp 34 is fixed, for example by means of a rivet, to the lamp holder.
  • One end of this blade is applied elastically against the pin 26 of the lamp and on its other end is welded a conductive wire 36.
  • the pin 26 is clamped between the blade 34 and a bearing surface of the lamp holder.
  • the blade 34 therefore plays a double role: it maintains the lamp on the lamp holder and it provides an electrical connection between the pin 26 and the wire 36.
  • the lamp / lamp holder assembly is held on the reflector by means of an elastic bracket 38, the ends of which are housed in two holes drilled in appendix 12 of the reflector, so as to constitute a joint whose axis 40 is perpendicular to the axis 42 of the reflector, and the transverse part of which is received in V 44 notches cut on the end rear of the lamp holder, the point of the V being in the plane defined by the axes 40 and 42.
  • the rear end of the lamp holder is profiled, shaped ramp 46.
  • the bracket 38 is dimensioned to exert on the lamp holder a relatively large axial force when it is in the position described above and illustrated in FIG. 2.
  • the flange 20 of the lamp is then strongly clamped between the washer 30 and the disc 14 of the reflector, and the latter, the lamp and the lamp holder constitute a relatively rigid assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

1. Headlamp including a reflector provided with a central opening for passage of a bulb, a bulb holder provided with a seat for the cap and the pin or pins of the bulb, and elastic means bearing on the reflector and acting upon the bulb holder to apply a flange of the bulb against a reflector's rear bearing surface provided around the central opening, characterized in that the bulb holder (28) is composed of a part made of an electrically insulating material which is fitted with added metallic elements (30, 34), ensuring an electric contact with the pin or pins (26) and possibly with the cap (24) or the flange (20) of the bulb, and the front end of which is provided with an annular surface bearing upon the flange (20) of the bulb, and in that said elastic means are composed of one or several elastic fasteners (38) stretched between the reflector (10, 12) and the bulb holder (28).

Description

La présente invention concerne les projecteurs d'éclairage dans lesquels la lampe, qui est munie d'une collerette, est montée sur un porte-lampe comportant un logement pour le culot de la lampe, et des moyens élastiques prenant appui sur le réflecteur et agissant sur le porte-lampe sont prévus pour maintenir la lampe en place en appliquant la collerette sur une surface arrière d'appui du réflecteur ménagée à cet effet autour d'une ouverture centrale du réflecteur.The present invention relates to lighting projectors in which the lamp, which is provided with a flange, is mounted on a lamp holder comprising a housing for the lamp base, and elastic means bearing on the reflector and acting on the lamp holder are provided to hold the lamp in place by applying the flange to a rear support surface of the reflector provided for this purpose around a central opening of the reflector.

Le porte-lampe doit être fixé sur le réflecteur de façon à permettre un démontage et un remontage faciles et rapides de la lampe. Jusqu'ici aucune solution simple n'a été proposée pour assurer cette fixation. Une solution connue (FR-2 077 665) consiste à loger le porte-lampe dans une cheminée solidaire du réflecteur et à le maintenir en place au moyen d'un ressort hélicoïdal comprimé entre le porte-lampe et une pièce agencée télescopiquement sur le porte-lampe et fixée de manière amovible dans la cheminée. Cette solution est relativement compliquée, et conduit à un encombrement important à l'arrière du réflecteur.The lamp holder must be fixed on the reflector in order to allow an easy and quick disassembly and reassembly of the lamp. Until now, no simple solution has been proposed to ensure this fixation. A known solution (FR-2 077 665) consists in housing the lamp holder in a chimney integral with the reflector and in keeping it in place by means of a helical spring compressed between the lamp holder and a part arranged telescopically on the door. -lamp and removably fixed in the chimney. This solution is relatively complicated, and leads to significant bulk at the rear of the reflector.

Il est également connu (FR-A-2 359 369) de maintenir une lampe à culot en place contre surface d'appui annulaire du réflecteur en prévoyant un ressort tendu entre le réflecteur et le culot même de la lampe.It is also known (FR-A-2 359 369) to hold a lamp with a base in place against the annular bearing surface of the reflector by providing a tensioned spring between the reflector and the base of the lamp itself.

Le but de la présente invention est de fournir un porte-lampe et des moyens de fixation du porte-lampe sur le réflecteur très simples et permettant un remplacement rapide (et facile du la lampe.The object of the present invention is to provide a lamp holder and means for fixing the lamp holder to the reflector which are very simple and allow rapid (and easy) replacement of the lamp.

Le projecteur objet de la présente invention est caractérisé en ce que le porte-lampe est constitué par une pièce en une matière électriquement isolante qui est munie d'éléments métalliques rapportés assurant un contact électrique avec la ou les broches de la lampe et éventuellement avec le culot ou la collerette de la lampe et dont l'extrémité avant comporte une surface annulaire s'appuyant sur la collerette de la lampe, et en ce que lesdits moyens élastiques sont constitués par une ou plusieurs attaches élastiques tendues entre le réflecteur et le porte-lampe.The headlamp object of the present invention is characterized in that the lamp holder is constituted by a piece of an electrically insulating material which is provided with attached metal elements ensuring electrical contact with the pin or pins of the lamp and possibly with the base or flange of the lamp and the front end of which comprises an annular surface resting on the flange of the lamp, and in that said elastic means consist of one or more elastic fasteners stretched between the reflector and the holder lamp.

Au moins un des éléments assurant un contact électrique avec l'une des broches de la lampe sera constitué par une lame élastique, ladite broche étant serrée entre une extrémité de la lame et une surface d'appui du porte-lampe pour assurer une liaison mécanique entre la lampe et le porte-lampe.At least one of the elements ensuring electrical contact with one of the pins of the lamp will be constituted by an elastic blade, said pin being clamped between one end of the blade and a bearing surface of the lamp holder to ensure a mechanical connection. between the lamp and the lamp holder.

Une rondelle métallique pourra etre fixée, par exemple par collage, sur l'extrémité avant du porte-lampe et reliée à un conducteur électrique pour assurer une connexion électrique entre le conducteur et la collerette de la lampe serrée entre la rondelle et la surface du réflecteur sur laquelle elle s'appuie.A metal washer may be fixed, for example by gluing, on the front end of the lamp holder and connected to an electrical conductor to ensure an electrical connection between the conductor and the flange of the lamp clamped between the washer and the surface of the reflector on which it is based.

La fixation du porte-lampe sur le réflecteur pourra être assurée par un étrier élastique articulé sur le réflecteur et chevauchant le porte-lampe. Une rampe sera alors formée sur l'extrémité arrière du porte-lampe pour faciliter la mise en place de l'étrier, cette rampe aboutissant à une encoche en V dans laquelle la partie transversale de l'étrier viendra se loger. Cette fixation pourrait aussi être, réalisée au moyen de ressorts hélicoïdaux ou à lame dont une extrémité serait fixée ou articulée sur le réflecteur et dont l'autre extrémité serait munie d'une griffe venant s'accrocher à l'arrière du porte-lampe.The fixing of the lamp holder on the reflector can be ensured by an elastic bracket articulated on the reflector and overlapping the lamp holder. A ramp will then be formed on the rear end of the lamp holder to facilitate the positioning of the stirrup, this ramp leading to a V-shaped notch in which the transverse part of the stirrup will be housed. This fixing could also be carried out by means of helical or leaf springs, one end of which is fixed or articulated on the reflector and the other end of which is provided with a claw which hooks onto the rear of the lamp holder.

La description qui suit se réfère au dessin qui l'accompagne et montre, à titre d'exemple non- limitatif, un mode de réalisation de l'invention et sur lequel:The description which follows refers to the accompanying drawing and shows, by way of nonlimiting example, an embodiment of the invention and in which:

La figure 1 est une vue en coupe, par un plan diamétral, de la partie centrale d'un réflecteur de projecteur et du porte-lampe fixé sur celui-ci; etFigure 1 is a sectional view, through a diametral plane, of the central part of a projector reflector and the lamp holder fixed thereon; and

La figure 2 est une vue en coupe de l'ensemble de la figure 1, la coupe étant effectuée dans un plan perpendiculaire à celui de la figure 1.FIG. 2 is a sectional view of the assembly of FIG. 1, the cutting being carried out in a plane perpendicular to that of FIG. 1.

Sur le dessin, le numéro de référence 10 désigne un réflecteur qui comporte dans sa partie centrale un appendice cylindrique 12 fermé par un disque 14 percé d'une ouverture 16 pour le passage d'une lampe 18. Celle-ci comporte une collerette 20 appliquée sur le disque 14 et munie d'un ou plusieurs tétons 22 reçus dans des trous percés dans le disque pour assurer le positionnement correct de la lampe sur le réflecteur.In the drawing, the reference number 10 designates a reflector which comprises in its central part a cylindrical appendage 12 closed by a disc 14 pierced with an opening 16 for the passage of a lamp 18. This comprises a flange 20 applied on the disc 14 and provided with one or more pins 22 received in holes drilled in the disc to ensure the correct positioning of the lamp on the reflector.

Le culot 24 et l'unique broche 26 de la lampe sont placés dans un logement prévu à cet effet dans un porte-lampe 28. Celui-ci est constitué par une pièce cylindrique en une matière électriquement isolant qui pourra être fabriqué, par exemple, par moulage d'une matière plastique.The base 24 and the single pin 26 of the lamp are placed in a housing provided for this purpose in a lamp holder 28. This consists of a cylindrical piece of an electrically insulating material which can be manufactured, for example, by molding a plastic material.

Une rondelle métallique 30 est fixée, par exemple par collage, sur l'extrémité avant, adjacente au réflecteur, du porte-lampe. Cette rondelle est en contact avec la collerette 20 de la lame et assure une connexion électrique entre celle-ci et un fil conducteur 32 soudé sur la rondelle.A metal washer 30 is fixed, for example by gluing, on the front end, adjacent to the reflector, of the lamp holder. This washer is in contact with the flange 20 of the blade and provides an electrical connection between the latter and a conductive wire 32 welded to the washer.

Une lampe métallique 34 est fixée, par exemple au moyen d'un rivet, sur le porte-lampe. Une extrémité de cette lame est appliquée élastiquement contre la broche 26 de la lampe et sur son autre extrémité est soudé un fil conducteur 36. La broche 26 est serrée entre la lame 34 et une surface d'appui du porte-lampe. La lame 34 joue donc un double rôle: elle maintient la lampe sur le porte-lampe et elle assure une liasion électrique entre la broche 26 et le fil 36.A metal lamp 34 is fixed, for example by means of a rivet, to the lamp holder. One end of this blade is applied elastically against the pin 26 of the lamp and on its other end is welded a conductive wire 36. The pin 26 is clamped between the blade 34 and a bearing surface of the lamp holder. The blade 34 therefore plays a double role: it maintains the lamp on the lamp holder and it provides an electrical connection between the pin 26 and the wire 36.

L'ensemble lampe/porte-lampe est maintenu sur le réflecteur au moyen d'un étrier élastique 38 dont les extrémités sont logées dans deux trous percés dans l'appendice 12 du réflecteur, de façon à constituer une articulation dont l'axe 40 est perpendiculaire à l'axe 42 du réflecteur, et dont la partie transversale est reçue dans des encoches en V 44 découpées sur l'extrémité arrière du porte-lampe, la pointe du V se trouvant dans le plan défini par les axes 40 et 42. Pour faciliter la mise en place de l'étrier et son dégagement, l'extrémité arrière du porte-lampe est profilée, en forme de rampe 46. L'étrier 38 est dimensionné pour exercer sur le porte-lampe un effort axial relativement important lorsqu'il se trouve dans la position décrite ci-dessus et illustrée sur la figure 2. La collerette 20 de la lampe est alors fortement serrée entre la rondelle 30 et le disque 14 du réflecteur, et celui-ci, la lampe et le porte-lampe constituent un ensemble relativement rigide.The lamp / lamp holder assembly is held on the reflector by means of an elastic bracket 38, the ends of which are housed in two holes drilled in appendix 12 of the reflector, so as to constitute a joint whose axis 40 is perpendicular to the axis 42 of the reflector, and the transverse part of which is received in V 44 notches cut on the end rear of the lamp holder, the point of the V being in the plane defined by the axes 40 and 42. To facilitate the installation of the stirrup and its release, the rear end of the lamp holder is profiled, shaped ramp 46. The bracket 38 is dimensioned to exert on the lamp holder a relatively large axial force when it is in the position described above and illustrated in FIG. 2. The flange 20 of the lamp is then strongly clamped between the washer 30 and the disc 14 of the reflector, and the latter, the lamp and the lamp holder constitute a relatively rigid assembly.

Pour démonter la lampe, il suffit de dégager l'étrier des encoches 44 en exerçant des efforts dans le sens des flèches F sur les parties latérales de l'étrier et en le faisant pivoter autour de son axe d'articulation. On peut alors enlever l'ensemble lampe/porte-lampe pour l'amener dans une position permettant un remplacement facile de la lampe. Pour faciliter cette opération il importe que la rampe 46 soit du côté opposé au câble d'amenée du courant 32, 36 de sorte que l'étrier 38 ne se rabatte pas sur le câble lorsqu'on le dégage du porte-lampe. La rondelle 30 doit donc être correctement orientée au montage par rapport au porte-lampe. A cette fin on a prévu sur le porte-lampe un téton s'engageant dans un trou de la rondelle (sur le côté droit de la figure 1).To dismantle the lamp, it suffices to disengage the stirrup from the notches 44 by exerting forces in the direction of the arrows F on the lateral parts of the stirrup and by pivoting it around its axis of articulation. The lamp / lamp holder assembly can then be removed to bring it into a position allowing easy replacement of the lamp. To facilitate this operation, it is important that the ramp 46 is on the side opposite to the current supply cable 32, 36 so that the stirrup 38 does not fall back on the cable when it is released from the lamp holder. The washer 30 must therefore be correctly oriented for mounting relative to the lamp holder. To this end, a nipple is provided on the lamp holder, engaging in a hole in the washer (on the right side of FIG. 1).

De nombreuses modifications peuvent être apportées au mode de réalisation décrit ci-dessus par la substitution de moyens techniques équivalents. En particulier l'étrier pourrait être remplacé par d'autres moyens de fixation élastiques. Il est bien entendu que ces modifications entrent dans le cadre de l'invention.Many modifications can be made to the embodiment described above by the substitution of equivalent technical means. In particular, the stirrup could be replaced by other elastic fixing means. It is understood that these modifications are within the scope of the invention.

Claims (7)

1. Headlamp including a reflector provided with a central opening for passage of a bulb, a bulb holder provided with a seat for the cap and the pin or pins of the bulb, and elastic means bearing on the reflector and acting upon the bulb holder to apply a flange of the bulb against a reflector's rear bearing surface provided around the central opening, characterized in that the bulb holder (28) is composed of a part made of an electrically insulating material which is fitted with added metallic elements (30, 34), ensuring an electric contact with the pin or pins (26) and possibly with the cap (24) or the flange (20) of the bulb, and the front end of which is provided with an annular surface bearing upon the flange (20) of the bulb, and in that said elastic means are composed of one or several elastic fasteners (38) stretched between the reflector (10, 12) and the bulb holder (28).
2. Headlamp according to claim 1, characterized in that at least one of the elements ensuring an electric contact with a pin (26) of the bulb is composed of a spring plate (34) and in that said pin is clamped between one end of the spring plate and a bearing surface of the bulb holder (28).
3. Headlamp according to claim 1 or 2, characterized in that the element ensuring an electric contact with the flange (20) of the bulb consists of a metal washer (30) fixed to the front end of the bulb holder (28), said flange being clamped between said washer and the surface (14) of the reflector on which it rests.
4. Headlamp according to claim 1, 2 or 3, characterized in that said elastic means consist of an elastic yoke (38) hinged on the reflector (10, 12) and straddling the bulb holder.
5. Headlamp according to claim 4, characterized in that the rear end of the bulb holder (28) is shaped to form an incline (46) ending in a notch in which the transversal section of the yoke is retained when the bulb holder is in position on the reflector.
6. Bulb holder intended to be used for mounting a bulb fitted with a flange on the reflector of a headlamp and consisting of a part made of insulating plastics in which is arranged a seat for the cap and the pins of the bulb, characterized in that, at one of its ends, it is fitted with a metal washer (30) intended to be applied against the flange (20) of the bulb and,
at the other end, with retaining means (44) for one or several elastic fasteners (38) carried by the reflector (10, 12).
7. Bulb holder according to claim 6 intended to be fixed to the reflector of a headlamp by means of an elastic yoke (38) hinged on the reflector (10, 12), characterized in that said retaining means are composed of notches (44), arranged at this other end of the bulb holder (28), and in that an incline (46) ending in these notches is provided at this other end to facilitate putting into position of the yoke.
EP86401853A 1985-09-12 1986-08-21 Headlamp and bulb holder Expired EP0215700B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86401853T ATE39280T1 (en) 1985-09-12 1986-08-21 HEADLIGHT WITH BULB HOLDER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8513534 1985-09-12
FR8513534A FR2587088B1 (en) 1985-09-12 1985-09-12 LIGHTING PROJECTOR AND LAMP HOLDER FOR PROJECTOR

Publications (2)

Publication Number Publication Date
EP0215700A1 EP0215700A1 (en) 1987-03-25
EP0215700B1 true EP0215700B1 (en) 1988-12-14

Family

ID=9322848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401853A Expired EP0215700B1 (en) 1985-09-12 1986-08-21 Headlamp and bulb holder

Country Status (4)

Country Link
EP (1) EP0215700B1 (en)
AT (1) ATE39280T1 (en)
DE (1) DE3661438D1 (en)
FR (1) FR2587088B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4334722A1 (en) * 1993-10-12 1995-04-13 Bosch Gmbh Robert Electrical contacting of a light source

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE816202C (en) * 1948-10-02 1951-10-08 Bosch Gmbh Robert Especially suitable for motor vehicles
US2750491A (en) * 1955-02-08 1956-06-12 Northeast Tool Die Works Inc Sealed beam light
FR1475752A (en) * 1966-01-24 1967-04-07 Ducellier & Cie Lamp adapter support, in particular for automotive vehicle headlights
FR2050587A5 (en) * 1969-06-18 1971-04-02 Sev Marchal
GB1585060A (en) * 1976-07-20 1981-02-25 Lucas Industries Ltd Lamp assemblies

Also Published As

Publication number Publication date
EP0215700A1 (en) 1987-03-25
DE3661438D1 (en) 1989-01-19
ATE39280T1 (en) 1988-12-15
FR2587088A1 (en) 1987-03-13
FR2587088B1 (en) 1987-11-27

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