EP0109601B1 - Water-proof case for a thin watch movement - Google Patents

Water-proof case for a thin watch movement Download PDF

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Publication number
EP0109601B1
EP0109601B1 EP83111085A EP83111085A EP0109601B1 EP 0109601 B1 EP0109601 B1 EP 0109601B1 EP 83111085 A EP83111085 A EP 83111085A EP 83111085 A EP83111085 A EP 83111085A EP 0109601 B1 EP0109601 B1 EP 0109601B1
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EP
European Patent Office
Prior art keywords
case
band
binding
casing
water
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
EP83111085A
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German (de)
French (fr)
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EP0109601A1 (en
Inventor
Gaston Gagnebin
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.)
Omega SA
Original Assignee
Omega SA
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Filing date
Publication date
Application filed by Omega SA filed Critical Omega SA
Publication of EP0109601A1 publication Critical patent/EP0109601A1/en
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Publication of EP0109601B1 publication Critical patent/EP0109601B1/en
Expired legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/081—Complete encasings for wrist or pocket watches also comprising means for hermetic sealing of the winding stem and crown

Definitions

  • the invention relates to a waterproof watch case intended to receive a movement of small thickness and comprising a middle-bezel on which a glass is mounted in a sealed manner, a bottom mounted notch on the middle and a casing frame supporting the movement. .
  • the present invention proposes to overcome the drawbacks mentioned above by presenting a new construction provided with the means which appear in the claims.
  • Figure 1 shows how the timepiece object of the invention is assembled.
  • the crystal 2 and the dial 3 are separated by the flange 4 forming part of the middle part 1.
  • the movement 5 is held in place by a first flange 6 of a casing frame 7.
  • This frame also carries a second flange 8 engaged in a groove 9 made in the inner part of the middle part.
  • the rim 8 is centered in the groove 9 by the shoulder 21.
  • An elastic bandage 10 surrounds the frame 7 surmounted by its second rim 8 and is also engaged in the groove 9.
  • the bottom 11 is engaged in the middle part 1 by means of two hooks 12 and 13 and when the watch is assembled, the bandage 10 takes the form of a rectangle as shown in the figure.
  • the first long side of this rectangle surrounds the frame 7 and the second long side covers the joint 14 formed by the middle part 1 and the bottom 11. The tightness is ensured by the short sides of the rectangle which are pressed respectively against the groove 9 and the inner wall of the bottom 11.
  • the height of the bandage 10 when it is not yet mounted in the part, slightly exceeds (0.1 to 0.2 mm) the height of the void formed by the middle part and the bottom, to allow, at the time of assembly, the crushing of the bandage and the assurance of a good seal.
  • Figure 2 for its part uses the same components which have been discussed in connection with Figure 1 and also shows how the control rod of the watch is mounted.
  • This rod 15, capped with a crown 16 passes through the casing, the elastic bandage 10, the frame 7 and is then coupled to the mechanism of the movement 5.
  • An orifice 17 is drilled in the bandage 10 whose diameter is slightly smaller than the stem diameter.
  • Figure 3 which is a section along the line A-A of Figure 2, shows that the middle part 1 and the bottom 11 are each provided with an opening 18, 19 in the form of U whose open branches look at each other.
  • the orifice 17 of the bandage 10 is located in the extension of the U-shaped openings.
  • the casing frame 7 may be made of metal while it will advantageously be made of plastic if we are dealing with a shaped box.
  • the elastic bandage 10 will be removably secured to the frame in the manner of a tire mounted on a rim.
  • the elastic bandage as described makes it possible to considerably reduce the height of the watch since it consists of a simple and single surround of rectangular shape which takes up very little space and ensures both a watertight mounting of the base on the middle and a sealed passage of the control rod.
  • this construction makes it possible to provide an external draft 20 around the periphery of the bottom, which contributes to giving the assembled part an even thinner appearance.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Electromechanical Clocks (AREA)

Abstract

A leak resistant watch casing is designed to accomodate a thin movement. It comprises a casing ring (7) supporting the movement (5) around which an elastic binding (10) is removably mounted. The binding is of rectangular cross section with the smaller sides of the rectangle being pressed against the case-band (1) and the back cover (11) when these elements are secured together. The binding includes an orifice (17) situated proximate two U-formed openings provided in the periphery of the case-band and back cover in order to accomodate the stem (15) of a control element.

Description

L'invention concerne une boîte de montre étanche destinée à recevoir un mouvement de faible épaisseur et comprenant une carrure-lunette sur laquelle est montée une glace de manière étanche, un fond monté à cran sur la carrure et un cadre d'encageage supportant le mouvement.The invention relates to a waterproof watch case intended to receive a movement of small thickness and comprising a middle-bezel on which a glass is mounted in a sealed manner, a bottom mounted notch on the middle and a casing frame supporting the movement. .

La mode impose aujourd'hui des montres de très faible épaisseur et il n'est pas rare de trouver des mouvements montés dans ces montres dont l'épaisseur est de l'ordre du millimètre. Une telle contrainte dans la miniaturisation oblige le constructeur à s'écarter des solutions classiques trop encombrantes et à trouver d'autres solutions originales que ce soit au niveau des composants formant le mouvement ou, comme on va le voir ici, au niveau de la boîte elle-même.Fashion today requires very thin watches and it is not uncommon to find movements fitted in these watches whose thickness is around a millimeter. Such a constraint in miniaturization obliges the manufacturer to deviate from conventional solutions that are too bulky and to find other original solutions, whether at the level of the components forming the movement or, as will be seen here, at the level of the box. herself.

Une boîte de montre présentant quelques ressemblances avec celle qui va être décrite plus loin est connue du brevet CH-A 619345 où le cadre d'encageage est revêtu, extérieurement, d'une garniture d'étanchéité présentant deux rebords s'étendant radialement vers l'intérieur et revêtant les tranches du cadre d'encageage. Cette construction, comme elle ressort des dessins présentés, n'est manifestement pas prévue pour une montre de faible épaisseur. On remarque notamment l'encombrement important provoqué par les rebords et surtout le système de croche- ment des saillies du cadre sur les bourrelets que présentent respectivement la carrure-lunette et le fond, système qui n'est pas praticable sur un cadre dont la hauteur serait de l'ordre du millimètre.A watch case having some resemblances to that which will be described later is known from patent CH-A 619 345 where the casing frame is coated, externally, with a sealing gasket having two flanges extending radially towards the inside and covering the edges of the casing frame. This construction, as it appears from the drawings presented, is clearly not intended for a thin watch. We note in particular the significant bulk caused by the edges and especially the hooking system of the frame projections on the beads that have the middle-bezel and the back respectively, a system which is not practicable on a frame whose height would be around a millimeter.

On a cité dans le rapport de recherche le document CH-A 310877 qui a pour objet une boîte de montre étanche et pare-chocs, caractérisée en ce qu'elle comprend un cercle d'emboîtage constitué par une bague métallique entourée d'un bandage en matière plastique et compressible, ledit bandage présentant un rebord extérieur qui est pressé contre la carrure par un organe de fermeture de la boîte. Cette construction a trait à une montre de grandes dimensions où le bandage est monté de telle façon que le mouvement flotte dans la boîte. Ceci ne saurait convenir aux montres de petites dimensions actuelles où une telle construction empêcherait de miniaturiser l'ensemble surtout de par le rebord du bandage qui conduit fatalement à accroître le diamètre du produit fini. On remarque aussi que la construction citée ne permet pas, par définition, un centrage précis du mouvement dans la boîte, ce qui ne saurait convenir à une montre dite de haut de gamme.We cited in the research report the document CH-A 310877 which relates to a waterproof watch case and bumper, characterized in that it comprises a casing circle constituted by a metal ring surrounded by a bandage made of plastic and compressible material, said bandage having an outer rim which is pressed against the middle part by a member for closing the box. This construction relates to a large watch where the bandage is mounted in such a way that the movement floats in the box. This would not be suitable for current small-scale watches where such a construction would prevent miniaturization of the whole especially by the edge of the bandage which inevitably leads to increasing the diameter of the finished product. We also note that the construction cited does not allow, by definition, a precise centering of the movement in the case, which would not be suitable for a so-called high-end watch.

On a également cité dans le rapport de recherche le document US-A 2256200 qui concerne également une montre pare-chocs et où, par conséquent, le centrage du mouvement par rapport au boîtier manque totalement de précision. En plus de cela, on remarque que le fond est ajusté sur une boîte monocoque à l'intérieur de laquelle vient s'appuyer le bandage élastique. Cette construction ne permet nullement de ménager une dépouille extérieure sur le pourtour du fond pour donner à la pièce assemblée un aspect encore plus mince, comme cela apparaîtra dans la présente invention. Pour que cela soit possible, il faudrait que la jointure entre le fond et la boîte soit réalisée en un endroit où le pourtour extérieur du bandage couvre ladite jointure.We also cited in the research report document US-A 2256200 which also relates to a bumper watch and where, therefore, the centering of the movement relative to the case lacks total precision. In addition to this, we notice that the bottom is adjusted on a monocoque box inside which comes to rest the elastic bandage. This construction in no way allows an external draft to be provided around the periphery of the bottom to give the assembled part an even thinner appearance, as will appear in the present invention. For this to be possible, it would be necessary for the joint between the bottom and the box to be made in a place where the outer periphery of the bandage covers said joint.

Pour remédier aux inconvénients précités, il a été proposé dans la demande CH 631 045 G une construction de boîte s'appliquant à une montre extra-plate. Dans ce but, le document cité prévoit un cercle d'encageageformé d'une plaque métallique surmoulée d'une matière élastique tandis que le fond et la carrure s'emboîtent à cran. Ainsi, dans cette constructon, l'épaisseur de la plaque surmoulée est faible et inférieure à 2 mm. Cette solution présente toutefois l'inconvénient de nécessiter un surmoulage ce qui, d'une part, ne peut être réalisé que sur une plaque métallique et ce qui, d'autre part, oblige à prévoir autant de pièces surmoulées qu'il y a de variantes d'emboîtage.To remedy the aforementioned drawbacks, it was proposed in application CH 631 045 G to construct a case applying to an extra-flat watch. To this end, the cited document provides for a casing circle formed by a metal plate overmolded with an elastic material while the case back and the middle are notched. Thus, in this construction, the thickness of the overmolded plate is low and less than 2 mm. However, this solution has the drawback of requiring overmolding, which, on the one hand, can only be carried out on a metal plate and which, on the other hand, makes it necessary to provide as many molded parts as there are casing variants.

Ainsi, la présente invention propose d'obvier aux inconvénients cités ci-dessus en présentant une construction nouvelle munie des moyens qui apparaissent dans les revendications.Thus, the present invention proposes to overcome the drawbacks mentioned above by presenting a new construction provided with the means which appear in the claims.

L'invention va être décrite maintenant à l'aide de la description qui suit et du dessin qui l'illustre à titre d'exemple dans lequel:

  • La fig. 1 est une coupe à 9 heures dans le sens de l'épaisseur de la montre.
  • La fig. 2 est une coupe à 3 heures dans le sens de l'épaisseur de la montre.
  • La fig. 3 est une coupe selon la ligne A-A de la figure 2, à échelle deux fois plus grande.
The invention will now be described with the aid of the description which follows and of the drawing which illustrates it by way of example in which:
  • Fig. 1 is a cut at 9 o'clock in the thickness direction of the watch.
  • Fig. 2 is a cut at 3 o'clock in the thickness direction of the watch.
  • Fig. 3 is a section along the line AA in FIG. 2, on a scale twice as large.

La figure 1 montre comment est assemblée la pièce d'horlogerie objet de l'invention. Sur la carrure-lunette 1 est montée de manière étanche la glace 2. Pour réduire au maximum la hauteur de la pièce, on préférera coller la glace dans une échancrure pratiquée dans le pourtour de la carrure. Il est clair que d'autres solutions sont possibles qui font appel par exemple à une garniture d'étanchéité interposée entre la carrure et la glace. La glace 2 et le cadran 3 sont séparés par le réhaut 4 faisant partie de la carrure 1. Le mouvement 5 est maintenu en place par un premier rebord 6 d'un cadre d'encageage 7. Ce cadre porte également un second rebord 8 engagé dans une saignée 9 pratiquée dans la partie intérieure de la carrure. Le rebord 8 est centré dans la saignée 9 par l'épaulement 21. Un bandage élastique 10 entoure le cadre 7 surmonté de son second rebord 8 et est engagé également dans la saignée 9. Le fond 11 est engagé dans la carrure 1 au moyen de deux crochements 12 et 13 et quand la montre est assemblée, le bandage 10 prend la forme d'un rectangle tel qu'il est représenté sur la figure. Le premier grand côté de ce rectangle entoure le cadre 7 et le second grand côté couvre la jointure 14 formée par la carrure 1 et le fond 11. L'étanchéité est assurée par les petits côtés du rectangle qui sont pressés respectivement contre la saignée 9 et la paroi intérieure du fond 11. On comprendra que la hauteur du bandage 10, lorsqu'il n'est pas encore monté dans la pièce, dépasse légèrement (0,1 à 0,2 mm) la hauteur du vide formé par la carrure et le fond, pour permettre, au moment de l'assemblage, l'écrasement du bandage et l'assurance d'une bonne étanchéité.Figure 1 shows how the timepiece object of the invention is assembled. On the middle part-bezel 1 is mounted in a sealed manner the crystal 2. To reduce the height of the part as much as possible, it is preferable to stick the crystal in a notch formed in the periphery of the middle. It is clear that other solutions are possible which call for example a seal interposed between the middle part and the glass. The crystal 2 and the dial 3 are separated by the flange 4 forming part of the middle part 1. The movement 5 is held in place by a first flange 6 of a casing frame 7. This frame also carries a second flange 8 engaged in a groove 9 made in the inner part of the middle part. The rim 8 is centered in the groove 9 by the shoulder 21. An elastic bandage 10 surrounds the frame 7 surmounted by its second rim 8 and is also engaged in the groove 9. The bottom 11 is engaged in the middle part 1 by means of two hooks 12 and 13 and when the watch is assembled, the bandage 10 takes the form of a rectangle as shown in the figure. The first long side of this rectangle surrounds the frame 7 and the second long side covers the joint 14 formed by the middle part 1 and the bottom 11. The tightness is ensured by the short sides of the rectangle which are pressed respectively against the groove 9 and the inner wall of the bottom 11. It will be understood that the height of the bandage 10, when it is not yet mounted in the part, slightly exceeds (0.1 to 0.2 mm) the height of the void formed by the middle part and the bottom, to allow, at the time of assembly, the crushing of the bandage and the assurance of a good seal.

La figure 2 pour sa part reprend les mêmes composants qui ont été discutés à propos de la figure 1 et montre en plus comment est montée la tige de commande de la montre. Cette tige 15, coiffée d'une couronne 16, traverse le boîtier, le bandage élastique 10, le cadre 7 puis est couplé au mécanisme du mouvement 5. Un orifice 17 est percé dans le bandage 10 dont le diamètre est légèrement plus petit que le diamètre de la tige. Par ce moyen on assure une bonne étanchéité à l'endroit du passage de la tige si l'on prend soin de surcroît de polir la tige à ce même endroit.Figure 2 for its part uses the same components which have been discussed in connection with Figure 1 and also shows how the control rod of the watch is mounted. This rod 15, capped with a crown 16, passes through the casing, the elastic bandage 10, the frame 7 and is then coupled to the mechanism of the movement 5. An orifice 17 is drilled in the bandage 10 whose diameter is slightly smaller than the stem diameter. By this means a good seal is ensured at the point of passage of the rod if care is additionally taken to polish the rod at this same place.

Comme l'épaisseur hors-tout du boîtier assemblé est très réduite, on ne disposera généralement pas d'assez de matière pour chasser un tube de guidage de la tige. La figure 3, qui est une coupe selon la ligne A-A de la figure 2, montre que la carrure 1 et le fond 11 sont pourvus chacun d'une ouverture 18, 19 en forme de U dont les branches ouvertes se regardent. L'orifice 17 du bandage 10 se trouve dans le prolongement des ouvertures en U. L'absence de tube de guidage a l'avantage d'éviter une garniture d'étanchéité supplémentaire inhérente à tout système de ce genre.As the overall thickness of the assembled housing is very small, there will generally not be enough material to drive out a guide tube from the rod. Figure 3, which is a section along the line A-A of Figure 2, shows that the middle part 1 and the bottom 11 are each provided with an opening 18, 19 in the form of U whose open branches look at each other. The orifice 17 of the bandage 10 is located in the extension of the U-shaped openings. The absence of a guide tube has the advantage of avoiding an additional seal inherent in any system of this kind.

La construction qui vient d'être décrite convient tout à la fois pour un boîtier rond ou de forme. Dans le cas d'un boîtier rond, le cadre d'en- cageage 7 pourra être en métal tandis qu'il sera avantagement réalisé en matière plastique si l'on a affaire à un boîtier de forme. Généralement, le bandage élastique 10 sera solidarisé de manière amovible au cadre à la manière d'un pneu monté sur une jante.The construction which has just been described is suitable both for a round or shaped housing. In the case of a round box, the casing frame 7 may be made of metal while it will advantageously be made of plastic if we are dealing with a shaped box. Generally, the elastic bandage 10 will be removably secured to the frame in the manner of a tire mounted on a rim.

Ainsi le bandage élastique tel que décrit permet de réduire considérablement la hauteur de la montre puisqu'il consiste en un simple et unique entourage de forme rectangulaire très peu encombrant et assurant à la fois un montage étanche du fond sur la carrure et un passage étanche de la tige de commande. Comme on le voit aussi, cette construction permet de ménager une dépouille extérieure 20 sur le pourtour du fond, ce qui contribue à donner à la pièce assemblée un aspect plus mince encore.Thus the elastic bandage as described makes it possible to considerably reduce the height of the watch since it consists of a simple and single surround of rectangular shape which takes up very little space and ensures both a watertight mounting of the base on the middle and a sealed passage of the control rod. As can also be seen, this construction makes it possible to provide an external draft 20 around the periphery of the bottom, which contributes to giving the assembled part an even thinner appearance.

Il faut remarquer aussi que la construction décrite simplifie les opérations de montage: après avoir monté la glace 2 sur la carrure 1, on introduit par le dessous l'ensemble formé du cadran 3, du mouvement 5, du cadre 7 et de son bandage 10 après quoi on introduit la tige 15 et on ferme la boîte avec le fond 11.It should also be noted that the construction described simplifies the mounting operations: after mounting the glass 2 on the middle part 1, the assembly formed by the dial 3, the movement 5, the frame 7 and its bandage 10 is introduced from below. after which the rod 15 is introduced and the box is closed with the bottom 11.

Claims (4)

1. Water-tight watch casing designed to accomodate a thin watch movement and comprising a case-band bezel (1) onto which a watch glass (2) is water-tightly mounted, a back cover (11) snap mounted onto the case-band, a casing ring (7) supporting the movement (5), characterized in that it comprises an elastic binding (10) of substantially rectangular cross section, the first large side of the binding surrounding the casing ring and the two smaller sides of said binding being pressed against the case-band and the back cover when the case-band and the back cover are secured together, and in that the casing ring (7) includes a raised rim portion (8) engaged in a groove (9) provided in the interior of the case-band (1) said rim portion being urged against a shoulder (21) of the groove in order to center the movement (5) relative to the casing and that the second large side of the binding (10) covers the separation gap (14) between the case band and the back cover.
2. Water-tight watch casing according to claim 1 characterized in that the case-band bezel (1) and the back cover (11) are each provided on their peripheries with a U-formed opening (18, 19) the openings being arranged to face one another and that the binding (10) has an orifice (17) arranged in line with said U-formed openings so as to accomodate a control stem (15) mounted without a guide tube, said orifice having a diameter less than that of the stem.
3. Water-tight watch casing according to claim 1 characterized in that the elastic binding (10) is fixed in a detachable manner to said casing ring (7).
4. Water-tight watch casing according to claim 1 characterized in that one of the smaller sides of the binding (10) is pressed against said groove (9) provided in the case-band (1).
EP83111085A 1982-11-09 1983-11-07 Water-proof case for a thin watch movement Expired EP0109601B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6501/82 1982-11-09
CH650182A CH649676GA3 (en) 1982-11-09 1982-11-09

Publications (2)

Publication Number Publication Date
EP0109601A1 EP0109601A1 (en) 1984-05-30
EP0109601B1 true EP0109601B1 (en) 1987-03-11

Family

ID=4310609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111085A Expired EP0109601B1 (en) 1982-11-09 1983-11-07 Water-proof case for a thin watch movement

Country Status (6)

Country Link
US (1) US4529323A (en)
EP (1) EP0109601B1 (en)
JP (1) JPS59145985A (en)
CH (1) CH649676GA3 (en)
DE (1) DE3370204D1 (en)
HK (1) HK32792A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH655422GA3 (en) * 1984-01-26 1986-04-30
CH659169GA3 (en) * 1985-10-07 1987-01-15
CH674292B5 (en) * 1988-02-08 1990-11-30 Georges Claude
TW316297B (en) * 1995-10-27 1997-09-21 Ebauchesfabrik Eta Ag
US6322246B1 (en) * 1999-09-07 2001-11-27 Wing Root Limited Water-resistant movement holder for a pocket watch
CN101770203B (en) * 2009-12-14 2011-12-14 深圳市飞亚达科技发展有限公司 Water-proof watch with thin-wall watchcase
EP2746873B1 (en) * 2012-12-21 2017-11-15 Meco S.A. Modular assembly of a push button

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA447373A (en) * 1948-03-23 Steimann Hans Watertight watchcase
CH72292A (en) * 1915-11-28 1916-05-01 J Breguet Breting Fils De Watch box
US2256200A (en) * 1939-07-28 1941-09-16 Donovan J Heilman Watchcase
CH250010A (en) * 1943-03-10 1947-07-31 Colomb Henri Waterproof box for watches and measuring devices.
CH252164A (en) * 1944-05-09 1947-12-15 S A Tony Vaurillon Waterproof box.
CH310877A (en) * 1951-06-05 1955-11-15 Juillerat Ch Jules Waterproof watch box and bumper.
GB721920A (en) * 1952-07-17 1955-01-12 Charles Jules Juillerat Waterproof shock-absorbing watch case
FR1434497A (en) * 1965-03-25 1966-04-08 Junghans Geb Ag Sealing gaskets for watch cases, especially wristwatches
FR2017168B1 (en) * 1968-08-19 1974-05-03 Bley Roland
CH619345GA3 (en) * 1977-10-18 1980-09-30 Waterproof watch case

Also Published As

Publication number Publication date
JPS59145985A (en) 1984-08-21
JPH027036B2 (en) 1990-02-15
EP0109601A1 (en) 1984-05-30
CH649676GA3 (en) 1985-06-14
DE3370204D1 (en) 1987-04-16
US4529323A (en) 1985-07-16
HK32792A (en) 1992-05-15

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