EP0337900B1 - High sensitivity electromagnetic tripper - Google Patents

High sensitivity electromagnetic tripper Download PDF

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Publication number
EP0337900B1
EP0337900B1 EP19890420102 EP89420102A EP0337900B1 EP 0337900 B1 EP0337900 B1 EP 0337900B1 EP 19890420102 EP19890420102 EP 19890420102 EP 89420102 A EP89420102 A EP 89420102A EP 0337900 B1 EP0337900 B1 EP 0337900B1
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EP
Grant status
Grant
Patent type
Prior art keywords
base
armature
characterized
trip device
cover
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
EP19890420102
Other languages
German (de)
French (fr)
Other versions
EP0337900A1 (en )
Inventor
Michel Bonniau
Marc Paupert
Régis Renel
Alain Karczewski
Jacques Vallot
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/32Electromagnetic mechanisms having permanently magnetised part
    • H01H71/325Housings, assembly or disposition of different elements in the housing
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00Electromagnetic relays
    • H01H51/22Polarised relays
    • H01H51/2236Polarised relays comprising pivotable armature, pivoting at extremity or bending point of armature
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02Housings; Casings; Bases; Mountings
    • H01H71/0207Mounting or assembling the different parts of the circuit breaker
    • H01H2071/0242Assembling parts of a circuit breaker by using snap mounting techniques

Description

  • L'invention est relative à un déclencheur électromagnétique à accrochage magnétique, notamment pour un interrupteur ou disjoncteur différentiel, ayant un boîtier isolant constitué d'un socle et d'un capot à fond ouvert venant s'encliqueter sur le socle pour former un boîtier fermé, à l'intérieur duquel sont logés une armature en forme de U, dont les extrémités des deux jambes constituent deux surfaces polaires coplanaires, une palette pivotante sur l'extrémité de l'une desdites deux jambes de l'armature et venant en position armée du déclencheur se coller sur lesdites deux surfaces polaires pour fermer le circuit magnétique constitué par l'armature et la palette, un aimant permanent de polarisation du circuit magnétique et une bobine de déclenchement entourant l'autre desdites deux jambes de l'armature et ayant une carcasse à face inférieure accolée à la base de l'armature et encliquetée sur le socle. The invention relates to an electromagnetic trip device with magnetic latching, notably for a differential switch or circuit breaker, having an insulating housing composed of a base and an open bottom hood which clips onto the base to form a closed housing , inside which are housed a U-shaped armature, the ends of both legs constitute two coplanar polar surfaces, a pivoting blade on the end of one of said two legs of the armature and a member in the cocked position trigger stick on said two polar surfaces to close the magnetic circuit formed by the armature and blade, a permanent polarization magnet of the magnetic circuit and a trip coil surrounding the other of said two legs of the armature and having a underside carcass contiguous to the base of the armature and clipped onto the base.
  • Les documents FR-A-2.095.278 et DE-A-3.631.405 décrivent un déclencheur du genre mentionné, dans lequel les éléments du déclencheur sont logés dans un boîtier constitué par un socle et un capot encliqueté sur le socle. Documents FR-A-2095278 and DE-A-3631405 discloses a shutter of the kind mentioned, in which the trigger elements are housed in a housing consisting of a base and a cover clipped on the base. Sur l'une des jambes de l'armature est enfilée la carcasse de la bobine et sur l'autre une pièce de fixation qui en combinaison avec la carcasse est encliquetée sur le socle. On one of the frame legs is fitted the casing of the coil and on the other a fixing part which in combination with the housing is snapped onto the base. La base de l'armature est intercalée entre la carcasse et un aimant permanent logé dans un évidement du socle. The base of the frame is interposed between the carcass and a permanent magnet housed in a recess of the base. Dans le déclencheur du document FR-A-2.095.278, une rondelle élastique est en outre interposée entre l'aimant et le fond de l'évidement, l'armature étant ainsi élastiquement maintenue dans le boîtier. In the trigger document FR-A-2095278, a spring washer is further interposed between the magnet and the bottom of the recess, the armature is thereby elastically held in the housing. Cette fixation est compliquée. This fixation is complicated.
  • La fabrication et le montage des déclencheurs électromagnétiques à très grande sensibilité du genre mentionné, doivent être particulièrement soignés pour obtenir une grande précision de déclenchement. The manufacture and assembly of electromagnetic actuators to high sensitivity of the kind mentioned, must be particularly carefully to get a great triggering accuracy. La présente invention a pour but la réalisation d'un déclencheur simplifié dont le montage est plus facile et est susceptible d'être partiellement ou entièrement automatisé. The present invention aims at achieving a simplified trigger assembly which is easier and is likely to be partially or fully automated.
  • Le déclencheur électromagnétique selon l'invention comprend les éléments énoncés dans la revendication 1. The electromagnetic trip device according to the invention comprises the elements set out in claim 1.
  • Les éléments du déclencheur sont fixés d'une part par l'encliquetage de la carcasse de la bobine sur le socle et d'autre part par l'appui du capot sur cette carcasse. The trigger elements are fixed on the one hand by snapping the coil carcass on the base and on the other hand by the support of the cover on this frame. Le verrouillage par le capot assure une fixation et un positionnement correct des éléments du déclencheur à l'intérieur du boîtier. The locking by the cover ensures attachment and correct positioning of the shutter elements to the interior of the housing. Cette fixation s'opère par de simples encliquetages pouvant être réalisés par des machines automatiques de montage. This attachment takes place by simple detents can be made by automatic assembly machines. Le capot présente une forme générale parallélépipédique dotée de moyens de fixation du déclencheur. The cover has a rectangular general shape equipped with trigger securing means. L'un des moyens de fixation est constitué par un angle biseauté de la face supérieure laissant subsister sur les bords, deux oreilles perforées permettant le passage d'un axe de fixation. One of the fastening means is constituted by a bevelled corner of the upper face leaving the edges, two perforated lugs for the passage of a fixing pin. Les deux angles sont de préférence biseautés pour une fixation par les deux bords de la face supérieure du capot. The two corners are preferably bevelled for attachment by the two edges of the upper face of the cover. Le capot présente avantageusement des moyens additionnels de fixation constitués par des pattes portées par les petites faces latérales d'une manière bien connue des spécialistes. The cap advantageously has additional fastening means consist of lugs carried by the smaller sides a manner well known to specialists. Les deux grandes faces latérales du capot peuvent présenter des redans de fixation par encliquetage pour solidariser le déclencheur à un support portant des becs d'encliquetage. The two large side faces of the cover may have snap attachment barbs to secure the shutter to a support carrying the latching noses.
  • Selon une particularité importante de l'invention, un ressort de rappel de la palette est ancré à l'une de ses extrémités par une vis de réglage vissée dans les spires du ressort. According to an important feature of the invention, a pallet of the return spring is anchored at one of its ends by an adjustment screw screwed into the turns of the spring. La vis assure la double fonction de maintien et de réglage de la force de rappel du ressort. The screw provides the dual function of holding and setting the spring return force. La tête de la vis de réglage prend appui sur une patte solidaire de l'armature du déclencheur en s'insérant dans une encoche ménagée dans cette patte. The head of the adjusting screw is supported on a lug of the frame of the shutter by being inserted in a notch formed in this tab. Les boîtiers des relais à très haute sensibilité doivent être étanches à la poussière et selon un développement de l'invention, les becs d'encliquetage du socle sur le capot sont conformés pour obturer les orifices dans lesquels ces becs s'engagent. The housings of the relay, high sensitivity must be dustproof and according to a development of the invention, the base of the latching lugs on the cover are shaped to close the openings in which these spouts engage. Les orifices sont avantageusement de forme circulaire et les extrémités des becs sont en forme de pions cylindriques s'encliquetant dans ces orifices. The holes are preferably circular in shape and the ends of the slats are in the form of cylindrical studs snapping into these openings.
  • L'aimant permanent de polarisation de l'armature est disposé entre les jambes de cette armature et il est maintenu par la carcasse de la bobine qui comporte à cet effet des extensions munies de découpes traversées par l'aimant permanent. The biasing permanent magnet of the armature is disposed between the legs of the armature and is held by the coil bobbin which comprises for this purpose extensions provided with cutouts crossings by the permanent magnet.
  • L'ensemble est particulièrement simple et le montage s'effectue par simple empilage et encliquetage des pièces les unes sur les autres. The assembly is particularly simple and the assembly is carried out simply by stacking and locking pieces on each other.
  • Le capot et le socle sont avantageusement réalisés en matière plastique chargée de particules magnétiques notamment de fer, pour constituer un écran magnétique contre les perturbations externes. The cover and the base are advantageously made of plastics material filled with magnetic particles include iron, to form a magnetic shield against external disturbances. Cette protection magnétique peut être renforcée ou réalisée par un écran magnétique externe, qui s'emboîte par exemple sur le capot et le socle. This magnetic shield can be enhanced or achieved by an external magnetic shield, which engages for example on the cover and the base.
  • D'autres avantages ou caractéristiques ressortiront plus clairement de la description qui va suivre, d'un mode de mise en oeuvre de l'invention donné à titre d'exemple non limitatif et représenté aux dessins annexés dans lesquels: Other advantages and features will become more apparent from the following description of an implementation mode of the invention given by way of example and shown in the accompanying drawings in which:
    • la figure 1 est une vue schématique en coupe suivant la ligne II de la figure 2 d'un déclencheur selon l'invention; Figure 1 is a schematic sectional view along line II of Figure 2 of a trip device according to the invention;
    • la figure 2 est une coupe suivant la ligne II.II de la figure 1; Figure 2 is a section along the line II.II of Figure 1;
    • la figure 3 est une coupe partielle suivant la ligne III.III de la figure 2. Figure 3 is a partial section along the line III.III of Figure 2.
  • Sur les figures, le circuit magnétique d'un déclencheur électromagnétique à haute sensibilité, est constitué par une armature 10 en forme de U et une palette pivotante 12. La palette 12 est articulée sur l'extrémité de l'une 14 des jambes 14, 16 de l'armature 10 et en position armée du déclencheur, la palette 12 vient s'appliquer sur les extrémités des jambes 14, 16 constituant deux surfaces polaires. In the figures, the magnetic circuit of a high-sensitivity electromagnetic trip device, is constituted by a frame 10 U-shaped and pivotally pallet 12. The pallet 12 is articulated to the end of one 14 of the legs 14, 16 of the armature 10 and in the loaded position of the shutter, the plate 12 is applied on the ends of legs 14, 16 forming two pole surfaces. Sur la branche 16 de l'armature 10 est enfilée une carcasse 18 d'une bobine 20. Un aimant permanent 22 de polarisation de l'armature 10, est intercalé entre les jambes 14, 16 pour maintenir la palette 12 en position attirée à l'encontre de la force de rappel d'un ressort à boudin 24. L'ensemble est logé à l'intérieur d'un boîtier constitué par un socle 26 et un capot 28 coiffant le socle 26. La face supérieure du capot 28 est traversée par un pion de commande 30 venant en appui sur la palette 12. Un tel déclencheur est bien connu et il suffit de rappeler que la libération de la palette est provoquée par une excitation de la bobine 20 annulant l'attraction de la palette 12 par l'aimant permanent 22. On the branch 16 of the armature 10 is threaded a carcass 18 of a coil 20. A permanent magnet 22 to bias the armature 10, is interposed between the legs 14, 16 to maintain the plate 12 in position drawn in against the return force of a helical spring 24. the whole is housed inside a casing constituted by a base 26 and a cover 28 covering the base 26. the upper face of cover 28 is crossed by a control pin 30 resting on the pallet 12. such a trigger is well known and need only recall that the release of the pallet is caused by excitation of the coil 20 canceling the attraction of the blade 12 by permanent magnet 22.
  • La bobine 20 est encadrée par des flasques (faces) inférieur 32 et supérieur 34 de la carcasse 18, ces flasques (faces) étant prolongés pour constituer des éléments de support de l'aimant permanent 22 qui traverse des orifices 36, 38, ménagés dans les prolongements de ces flasques 32, 34. La face inférieure du flasque 32 prend appui sur la base de l'armature 10 et présente deux fentes 46, 48 dans lesquelles s'engagent des becs d'encliquetage 42, 44 portés par le socle 26. En position encliquetée, la carcasse 18 maintient la base de l'armature 10 en appui sur le socle 26 et positionne l'aimant permanent 22. Le capot 28 s'emboîte sur le socle 26 en venant s'encliqueter sur quatre becs 50 ménagés aux quatre angles du socle rectangulaire. The coil 20 is surrounded by flanges (faces) lower 32 and upper 34 of the carcass 18, these flanges (faces) being extended to form the permanent magnet support members 22 passing through openings 36, 38, formed in the extensions of the flanges 32, 34. the lower face of the flange 32 bears on the base of the armature 10 and has two slots 46, 48 which are engaged by the latching noses 42, 44 carried by the base 26 . in the engaged position the carcass 18 holds the base of the armature 10 against the base 26 and positions the permanent magnet 22. the cover 28 fits over the base 26 in which clips 50 formed on four spouts the four corners of the rectangular base. La face supérieure du socle 28 porte des bossages internes 52 qui viennent en appui sur la face supérieure du flasque supérieur 34 de la carcasse 18 en position encliquetée du capot, pour verrouiller cette carcasse sur le socle 26. La carcasse 18 porte de plus des pions de centrage 54 s'engageant dans des orifices conjugés du socle 26. The upper face of base 28 carries internal bosses 52 which abut on the upper face of the upper flange 34 of the carcass 18 in the latched position of the cover to lock this casing to the base 26. The frame 18 carries more pegs centering 54 engaging in orifices conjugates of the base 26.
  • Le ressort de rappel 24 est un ressort de traction à boudin dont l'une des extrémités 56 est ancrée à la palette 12 et dont l'autre extrémité 58 est ancrée par une vis de réglage 60 à une patte 62 solidaire de l'armature 10. La vis 60 est engagée dans une encoche 64 de la patte 62, la tête 66 de la vis 60 prenant appui sur les bords de cette encoche 64 et la partie filetée de la vis 60 tant vissée dans les spires du ressort 24. Le réglage est effectué par une rotation de la tête 66 provoquant la pénétration de la partie filetée de la vis 60 dans le ressort 24. Le socle 26 présente en regard de la tête 66 un orifice 68 d'accès à la vis 60. The return spring 24 is a coil tension spring whose one end 56 is anchored to the plate 12 and whose other end 58 is anchored by a set screw 60 to a bracket 62 integral with the armature 10 . the screw 60 is engaged in a slot 64 of the tab 62, the head 66 of the screw 60 resting on the edges of this notch 64 and the threaded portion of the screw 60 both screwed into the coils of spring 24. the setting is effected by a rotation of the head 66 causing the penetration of the threaded portion of the screw 60 in the spring 24. the base 26 has opposite the head 66 an opening 68 for access to the screw 60.
  • Le capot 28 de forme générale parallélépipédique présente sur ses deux petites faces latérales 70, 72 des pattes de fixation perforées 74, 76, permettant le support du déclencheur et la fixation par des vis traversant les pattes 74, 76. Les angles supérieurs des petites faces latérales 70, 72, présentent des biseaux (talons) 78, 80 qui laissent subsister des extensions latérales en forme d'oreilles 82, 84 perforées de trous 86 permettant le passage d'un axe de fixation (non représenté). The cover 28 of generally parallelepiped shape has on its two small lateral faces 70, 72 of the perforated fixing lugs 74, 76, allowing the support of the actuator and the attachment by screws passing through the lugs 74, 76. The upper corners of the side dams side 70, 72, have bevels (heel) 78, 80 which leave lateral extensions in the form of lugs 82, 84 perforated with holes 86 allowing the passage of a fixing pin (not shown). Le capot 28 comporte un troisième moyen de fixation constitué par des redans conjugués des bossages 52. Les extrémités des becs d'encliquetage 50 portés par le socle 26, ont une forme arrondie s'engageant et obturant des orifices circulaires ménagés dans le capot 28. Cette forme des becs d'encliquetage contribue à l'étanchéité du boîtier en limitant les pénétrations de poussière ou d'autres impuretés. The cover 28 has a third fastening means consisting of conjugated stepped bosses 52. The ends of the latching lugs 50 carried by the base 26, have a rounded shape engaging and sealing circular openings in the cover 28. this shape of the latching noses contributes to the sealing of the housing limiting the penetration of dust or other impurities. Le socle 26 porte deux picots 87 auxquels sont soudés les fils de la bobine 20. The base 26 carries two pins 87 which are welded son of the coil 20.
  • Le montage du déclencheur selon l'invention est particulièrement simple. The mounting of the shutter according to the invention is particularly simple. Le sous-ensemble constitué par la bobine 20 avec sa carcasse 18 et l'aimant permanent 22, sont enfilés sur la branche 16 de l'armature 10 et la palette 12 avec son ressort de rappel 24, sont montés sur la branche opposée 14 de l'armature 10. Cet ensemble est solidarisé au socle 26 par simple encliquetage des becs 42, 44, dans les fentes 46,48 en prenant soin de positionner correctement les pions de centrage 54. Cet encliquetage fixe les élements du déclencheur au socle rigide 26 tout en permettant l'accès de la vis de réglage 66 à travers l'orifice 68 du socle. The subassembly formed by the coil 20 with its casing 18 and the permanent magnet 22 are threaded onto the leg 16 of the armature 10 and the plate 12 with its return spring 24, are mounted on the opposite branch 14 of frame 10. This assembly is secured to the base 26 by simply snapping beaks 42, 44 within the slots 46,48, taking care to properly position the centering pins 54. the fixed latching elements of the trigger to the rigid base 26 while allowing access to the adjustment screw 66 through the orifice 68 of the base. Par la suite le capot 28 est emboîté et encliqueté sur le socle 26 et les bossages 52 viennent en appui de la carcasse 18 pour verrouiller cette dernière. Thereafter the cover 28 is fitted and clipped onto the base 26 and the bosses 52 abut to the frame 18 to lock the latter. Le boîtier peut être fixé à un support, par exemple à un disjoncteur différentiel, soit par les pattes de fixation latérales 74, 76, soit par les axes traversant les oreilles perforées 82, 84, soit par un encliquetage sur les redans opposés aux bossages 52. Les différents moyens de fixation du boîtier peuvent être utilisés séparément ou en combinaison. The housing may be fixed to a support, for example a differential circuit breaker or by the lateral fastening lugs 74, 76 or by the axes passing through the perforated lugs 82, 84, or by a detent on the steps opposite to the bosses 52 . the different attachment means of the housing may be used singly or in combination. Le réglage de la force de rappel du ressort 24 par une simple rotation de la vis 60 assure une grande précision de réglage tout en évitant toute rotation intempestive de la vis 60 gràce à l'effet d'autoserrage des spires du ressort sur le filetage de la vis. Adjusting the biasing force of the spring 24 by simply rotating the screw 60 ensures high control accuracy while avoiding any untimely rotation of the screw 60 thanks to the effect of self-tightening of the spring coils of the thread the opinion.
  • L'invention est bien entendu nullement limitée au mode de mise en oeuvre plus particulièrement décrit. The invention is of course not limited to the implementation mode specifically described.

Claims (10)

  1. An electromagnetic trip device with magnetic latching, notably for an earth leakage switch or circuit breaker, having an insulating case formed by a base (26) and a cover (28) with an open bottom which clips onto the base (26) to form a closed case, inside which there are housed a U-shaped armature (10), the ends of the two legs (14, 16) of which constitute two coplanar polar surfaces, a blade (12) pivoting on the end of one (14) of said two legs (14, 16) of the armature (10) and pressing in the set position of the trip device against said two polar surfaces to close the magnetic circuit formed by the armature (10) and blade (12), a permanent magnet (22) for polarization of the magnetic circuit and a trip coil (20) surrounding the other (16) of said two legs (14, 16) of the armature (10) and having a shell (18) with a bottom face (32) adjoining the base of the armature (10) and clipped onto the base (26), characterized in that the base of the armature (10) is wedged between the bottom face of the shell (18) and the base (26) and is thus held pressed against this base (26), that the cover (28) has bosses (52) pressing against the upper face (34) of the shell (18) when the cover is fitted to position and lock the armature (10) and shell (18) inside the case, and that the permanent magnet (22) is located between the legs (14, 16) of the armature (10) and is held by extensions of said upper face (34) and lower face (32) of the shell (18) of the coil (20).
  2. The electromagnetic trip device according to claim 1, characterized in that said cover (28) of general parallelipipedic shape has on the face opposite from said open bottom a heel (78; 80) surrounded by two perforated lugs (82; 84) designed to be fitted onto a fixing spindle.
  3. The electromagnetic trip device according to claim 2, characterized in that the two corners of said opposite face each have a heel (78, 80) surrounded by lugs (82, 84).
  4. The electromagnetic trip device according to claim 1, 2 or 3, characterized in that the two small side faces (70, 72) of the cover (28) each have a fixing lug (74, 76) protruding out laterally from the case.
  5. The electromagnetic trip device according to claim 1, 2, 3 or 4, characterized in that the two large side faces of the cover (28) each have a cheek for fixing by clipping.
  6. The electromagnetic trip device according to any one of the foregoing claims, characterized in that the blade (12) is subjected to the action of a screw return spring (24) one of whose ends (56) is secured by an adjustment screw (60) screwed into the turns of the spring (24).
  7. The electromagnetic trip device according to claim 6, characterized in that the spring (24) extends between the blade (12) and the base (26), the adjustment screw (60) being accessible via an orifice (68) arranged in the base.
  8. The electromagnetic trip device according to claim 6 or 7, characterized in that the head (66) of the adjustment screw (60) is fitted into a notch (64) arranged in a lateral lug (62) securedly united to the armature (10) on which it bears.
  9. The electromagnetic trip device according to one of the foregoing claims, characterized in that the base (26) bears clipping tabs (50) cooperating with clipping orifices arranged in the cover (28) and that the ends of said tabs have a conjugate shape to that of the orifices to seal off the latter in the closed position of the case.
  10. The electromagnetic trip device according to any one of the foregoing claims, characterized in that the insulating case is made of plastic material charged with magnetic particles forming a magnetic shield.
EP19890420102 1988-04-14 1989-03-23 High sensitivity electromagnetic tripper Expired - Lifetime EP0337900B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8805063 1988-04-14
FR8805063A FR2630256B1 (en) 1988-04-14 1988-04-14 Activator has high electromagnetic susceptibility

Publications (2)

Publication Number Publication Date
EP0337900A1 true EP0337900A1 (en) 1989-10-18
EP0337900B1 true EP0337900B1 (en) 1994-06-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890420102 Expired - Lifetime EP0337900B1 (en) 1988-04-14 1989-03-23 High sensitivity electromagnetic tripper

Country Status (4)

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EP (1) EP0337900B1 (en)
DE (2) DE68915607D1 (en)
ES (1) ES2057169T3 (en)
FR (1) FR2630256B1 (en)

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Also Published As

Publication number Publication date Type
DE68915607D1 (en) 1994-07-07 grant
FR2630256A1 (en) 1989-10-20 application
FR2630256B1 (en) 1995-06-23 grant
EP0337900A1 (en) 1989-10-18 application
ES2057169T3 (en) 1994-10-16 grant
DE68915607T2 (en) 1994-10-20 grant

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