EP1538493B1 - Enamelled watch face with driven-in feet and its process of fabrication - Google Patents
Enamelled watch face with driven-in feet and its process of fabrication Download PDFInfo
- Publication number
- EP1538493B1 EP1538493B1 EP20030027696 EP03027696A EP1538493B1 EP 1538493 B1 EP1538493 B1 EP 1538493B1 EP 20030027696 EP20030027696 EP 20030027696 EP 03027696 A EP03027696 A EP 03027696A EP 1538493 B1 EP1538493 B1 EP 1538493B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceramic
- dial
- enamelled
- feet
- housing
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 9
- 239000000919 ceramic Substances 0.000 claims description 21
- 210000003298 dental enamel Anatomy 0.000 claims description 21
- 239000000758 substrate Substances 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004534 enameling Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910001020 Au alloy Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003353 gold alloy Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/10—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
-
- 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
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/12—Selection of materials for dials or graduations markings
-
- 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
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/14—Fastening the dials to the clock or watch plates
Definitions
- the present invention relates to an enamelled dial with hunted feet, including an enamelled dial for a timepiece.
- the invention also relates to a method for manufacturing such a dial, and to fix the feet with a precision requiring no retouch for later positioning in the housings provided in the plate.
- a template slightly larger than the shape of the wrist is cut out.
- dial drill holes for copper dial feet, then rivet / weld the feet. It will be observed that no opening, such as the passageways of needles or wickets, is made in the base plate, on the one hand not to weaken it, on the other hand to avoid the formation of wells during enameling.
- a second step after bending, is deposited an enamel composition on both sides of the plate, by known methods, such as soaking, screen printing or sieving. In the latter case, the underside is previously coated with an adhesive.
- the dial thus prepared is then passed to the oven at a temperature of between 750 ° C. and 850 ° C., depending on the composition of the enamel. The bending and the lower enamel layer make it possible to control the deformations of the dial, due to the difference between the coefficient of expansion of the copper and that of the enamel, at the end of manufacture.
- this second step is repeated several times, namely between 2 to 5 times, until the enamel layer has a thickness of about 0.7 mm, the thickness necessary to mask the best possible unattractive appearance of the copper substrate and give the dial the desired mechanical properties.
- a surface condition check is performed to remove unwanted inclusions and to fill the pores, and the dial is again subjected to heat treatment.
- the third step involves tracing the dial indexes, applying a film of enamel or very fine enamel with a passage in the oven, and then pressing at a certain temperature to give the dial the optimum flatness.
- the fourth step is to retouch on the back of the dial.
- the "technical" enamel layer is roughly leveled, but retains a granular and porous appearance.
- the feet which may have undergone distortions during previous handling and thermal treatments, are first removed by filing the enamel film which can cover them and then straightened so that they coincide perfectly with the housings provided in the plate. .
- the risks of damaging an almost finished product are great. Indeed, the straightening of the feet can cause either their breakage, or cracks in the enamel layer, or even its partial detachment.
- the present invention therefore aims to overcome the drawbacks of this prior art, by providing a method of manufacturing an enamelled dial with feet removed with fewer steps and does not require the repositioning of the feet at the end of manufacture, nor a grinding for the setting of the dial.
- the subject of the invention is an enamelled dial, according to claim 1, and its manufacturing method according to claim 7, with feet driven from positioning in the plate of a watch movement, said dial being formed by a first ceramic element, whose outer surface is coated with one to two layers of enamel and a second element provided with a housing for the precise placement of a foot by driving and / or gluing before assembly of the two elements by gluing and / or welding.
- This second element oriented movement side can be made of ceramic as the first element and have the same dimensions than this one. It can also be made of metal with the same contour as the first element, but with a smaller thickness, or in the form of a block that fits into a housing formed in the first ceramic element.
- the small number of enamel layers is sufficient to have, with a thickness of between 0.1 mm and 0.4 mm, a very satisfactory surface state and allows inversely to have a thicker substrate.
- the thickness of the ceramic substrate is preferably between 0.4 mm, which is a value already allowing to have satisfactory mechanical properties, and 0.7 mm, according to the embodiment.
- the finished dial is therefore substantially the same thickness as the dials of the prior art, but with a reversal of substrate thickness ratios / enamel layer.
- a dial according to the invention basically consists of three elements.
- An upper ceramic element 1a having a thickness of about 0.4 mm, is coated with one or two layers of enamel whose total thickness is between 0.1 mm and 0.4 mm. This small number of layers is quite sufficient, given the clear appearance of the ceramic on which the enamel layers are applied.
- a decal for the hour markers or other signs is also applied to the enamelled surface, followed by glazing.
- a lower element 1b also in ceramic approximately 0.4 mm thick, is provided with a bore 2 intended to receive a cylindrical foot 9 secured by gluing and / or driving before assembling the lower elements 1b and upper 1a by means of an adhesive joint 4 and / or a peripheral weld 6, for example by laser or electron bombardment.
- the two ceramic elements 1a, 1b are obtained from a ceramic powder such as an oxide of aluminum or zirconium, by pressing or by the well-known CIM (Ceramic Injection Molting) process.
- CIM Chemical Injection Molting
- the control of this process is currently sufficient to produce parts with a very tight tolerance requiring no further editing, especially since the very small number of enamel layers does not produce edge effects.
- the assembly of the elements 1a and 1b is preferably carried out by peripheral welding.
- the figure 3 corresponds to a second embodiment in which the dial foot is still fixed by driving.
- the dial comprises an upper element 1a made of ceramic having a thickness of between 0.4 and 0.7 mm, said element being as previously covered with one to two enamel layers 3.
- the lower element 8 is formed of a metal plate, for example copper or a gold alloy, with a thickness of between 0.1 and 0.3 mm.
- This lower element 8 has holes 2 at the precise locations where the feet 9 must be fixed by driving and / or gluing before assembly of the upper elements 1a and lower 8 by means of an adhesive joint 4.
- This embodiment also allows to have a rear face of the very aesthetic dial by choosing the same metal for the lower element 8 and for the foot 9, for example a gold alloy.
- the figure 4 represents a third embodiment, which is in fact a variant of the previous embodiment.
- the metal plate constituting the lower element 8 is replaced by a metal block 10 in which the foot 9 is driven / glued, said block 10 being positioned in a housing 13 formed in the upper element 1, or when the manufacture of said element by pressing or by the CIM process, or later by machining.
Description
La présente invention a pour objet un cadran émaillé avec pieds chassés, notamment un cadran émaillé pour pièce d'horlogerie. L'invention concerne également un procédé permettant de fabriquer un tel cadran, et de fixer les pieds avec une précision ne demandant aucune retouche pour le positionnement ultérieur dans des logements prévus dans la platine.The present invention relates to an enamelled dial with hunted feet, including an enamelled dial for a timepiece. The invention also relates to a method for manufacturing such a dial, and to fix the feet with a precision requiring no retouch for later positioning in the housings provided in the plate.
Pour les pièces d'horlogerie anciennes, montres ou pendules, l'émaillage de la face visible du cadran était utile, notamment pour masquer un substrat généralement réalisé en cuivre, ou alliage de cuivre dans un but esthétique. De plus, dans les pièces de petites dimensions, telles que les montres-bracelets, il est nécessaire que la face arrière du cadran soit pourvue de pieds pour assurer un positionnement correct dudit cadran. Il est également nécessaire que ladite face arrière du cadran comporte un contre-émaillage, même grossier, pour compenser les tensions résultant de l'émaillage de la face visible. Ainsi, pour obtenir un cadran émail de qualité, encore utilisé dans les montres haut de gamme, le procédé traditionnel de fabrication comporte un très grand nombre d'étapes exigeant de la part du fabricant un grand savoir-faire qui n'empêche pas malgré cela d'avoir un pourcentage de rebut important, comme on va le comprendre ci-après.For antique timepieces, watches or clocks, enamelling of the visible face of the dial was useful, especially to hide a substrate generally made of copper, or copper alloy for aesthetic purposes. In addition, in small parts, such as wristwatches, it is necessary that the rear face of the dial is provided with feet to ensure proper positioning of said dial. It is also necessary that said rear face of the dial includes a coarse enameling, even coarse, to compensate for the tensions resulting from the enameling of the visible face. Thus, to obtain a quality enamel dial, still used in high-end watches, the traditional manufacturing process involves a very large number of steps requiring from the manufacturer a great know-how that does not prevent despite this to have a significant percentage of waste, as will be understood below.
Dans une première étape, on découpe dans une mince plaque de cuivre, ou alliages de cuivre (0,1 mm pour une montre bracelet, jusqu'à 0,4 mm pour une pendule), un gabarit un peu plus grand que la forme du cadran, on perce des trous pour les pieds de cadran en cuivre, puis on effectue le rivetage/soudage des pieds. On observera qu'aucune ouverture, telle que les passages d'aiguilles ou des guichets, n'est effectuée dans la plaque de base, d'une part pour ne pas l'affaiblir, d'autre part pour éviter la formation de puits lors de l'émaillage.In a first step, in a thin copper plate, or copper alloys (0.1 mm for a wristwatch, up to 0.4 mm for a pendulum), a template slightly larger than the shape of the wrist is cut out. dial, drill holes for copper dial feet, then rivet / weld the feet. It will be observed that no opening, such as the passageways of needles or wickets, is made in the base plate, on the one hand not to weaken it, on the other hand to avoid the formation of wells during enameling.
Dans une deuxième étape, après avoir effectué un bombage, on dépose une composition d'émail sur les deux faces de la plaque, par des procédés connus, tels que le trempage, la sérigraphie ou le saupoudrage au tamis. Dans ce dernier cas, la face inférieure est préalablement revêtue d'une colle. Le cadran ainsi préparé est ensuite passé au four à une température comprise entre 750° C et 850° C selon la composition de l'émail. Le bombage et la couche d'émail inférieure permettent de maîtriser les déformations du cadran, dues à la différence entre le coefficient de dilatation du cuivre et celui de l'émail, en fin de fabrication.In a second step, after bending, is deposited an enamel composition on both sides of the plate, by known methods, such as soaking, screen printing or sieving. In the latter case, the underside is previously coated with an adhesive. The dial thus prepared is then passed to the oven at a temperature of between 750 ° C. and 850 ° C., depending on the composition of the enamel. The bending and the lower enamel layer make it possible to control the deformations of the dial, due to the difference between the coefficient of expansion of the copper and that of the enamel, at the end of manufacture.
Pour la face visible du cadran, cette deuxième étape est renouvelée plusieurs fois, à savoir entre 2 à 5 fois, jusqu'à ce que la couche d'émail ait une épaisseur d'environ 0,7 mm, épaisseur nécessaire pour masquer le mieux possible l'aspect peu esthétique du substrat en cuivre et conférer au cadran les propriétés mécaniques désirées. A la fin de ce cycle, un contrôle d'état de surface est effectué pour éliminer les inclusions indésirables et pour remplir les pores, et le cadran est à nouveau soumis à un traitement thermique.For the visible face of the dial, this second step is repeated several times, namely between 2 to 5 times, until the enamel layer has a thickness of about 0.7 mm, the thickness necessary to mask the best possible unattractive appearance of the copper substrate and give the dial the desired mechanical properties. At the end of this cycle, a surface condition check is performed to remove unwanted inclusions and to fill the pores, and the dial is again subjected to heat treatment.
La troisième étape consiste à décalquer les index de cadran, à appliquer un film de vernis ou d'émail très fin avec un passage au four, puis à effectuer un pressage à une température déterminée pour conférer au cadran la planéité optimum.The third step involves tracing the dial indexes, applying a film of enamel or very fine enamel with a passage in the oven, and then pressing at a certain temperature to give the dial the optimum flatness.
La quatrième étape consiste à faire des retouches sur la face arrière du cadran. La couche d'émail "technique" est grossièrement mise à niveau, mais conserve un aspect granuleux et poreux. Les pieds, qui ont pu subir des distorsions lors des manipulations et des traitements thermiques précédents, sont d'abord débarrassés par limage du film d'émail qui peut les recouvrir, puis redressés pour qu'ils coïncident parfaitement avec les logements prévus dans la platine. Au cours de cette étape, les risques d'endommager un produit presque fini sont grands. En effet, le redressement des pieds peut provoquer soit leur rupture, soit des craquelures dans la couche d'émail, voire son décollement partiel.The fourth step is to retouch on the back of the dial. The "technical" enamel layer is roughly leveled, but retains a granular and porous appearance. The feet, which may have undergone distortions during previous handling and thermal treatments, are first removed by filing the enamel film which can cover them and then straightened so that they coincide perfectly with the housings provided in the plate. . During this step, the risks of damaging an almost finished product are great. Indeed, the straightening of the feet can cause either their breakage, or cracks in the enamel layer, or even its partial detachment.
Dans une dernière étape, on effectue le perçage d'un trou au centre et, si nécessaire, la découpe d'un guichet, puis on effectue par meulage, la mise aux cotes du cadran, étant donné que les couches d'émail présentent une inclinaison sur le pourtour. On connaît également des cadrans avec pieds de type "sandwich" comme décrit par exemple dans le brevet
La présente invention vise donc à pallier les inconvénients de cet art antérieur, en procurant un procédé de fabrication d'un cadran émaillé avec pieds chassés comportant un moins grand nombre d'étapes et ne nécessitant pas le repositionnement des pieds en fin de fabrication, ni un meulage pour la mise aux cotes du cadran.The present invention therefore aims to overcome the drawbacks of this prior art, by providing a method of manufacturing an enamelled dial with feet removed with fewer steps and does not require the repositioning of the feet at the end of manufacture, nor a grinding for the setting of the dial.
A cet effet, l'invention a pour objet un cadran émaillé, selon la revendication 1, et son procédé de fabrication selon la revendication 7, avec des pieds chassés de positionnement dans la platine d'un mouvement horloger, ledit cadran étant formé par un premier élément en céramique, dont la surface externe est revêtue d'une à deux couches d'émail et par un deuxième élément pourvu d'un logement permettant la mise en place précise d'un pied par chassage et/ou collage avant assemblage des deux éléments par collage et/ou soudage. Ce deuxième élément orienté côté mouvement peut être réalisé en céramique comme le premier élément et avoir les mêmes dimensions que celui-ci. Il peut également être réalisé en métal avec le même contour que le premier élément, mais avec une épaisseur plus faible, ou encore sous forme d'un bloc venant s'insérer dans un logement formé dans le premier élément en céramique.For this purpose, the subject of the invention is an enamelled dial, according to
Etant donné que le premier élément en céramique a une teinte claire, le petit nombre de couches d'émail est suffisant pour avoir, avec une épaisseur comprise entre 0,1 mm et 0,4 mm, un état de surface très satisfaisant et permet inversement d'avoir un substrat plus épais. L'épaisseur du substrat céramique est de préférence comprise entre 0,4 mm, qui est une valeur permettant déjà d'avoir des propriétés mécaniques satisfaisantes, et 0,7 mm, selon le mode de réalisation. Le cadran terminé a donc sensiblement la même épaisseur que les cadrans de l'art antérieur, mais avec une inversion des rapports d'épaisseur substrat/couche d'émail.Since the first ceramic element has a light shade, the small number of enamel layers is sufficient to have, with a thickness of between 0.1 mm and 0.4 mm, a very satisfactory surface state and allows inversely to have a thicker substrate. The thickness of the ceramic substrate is preferably between 0.4 mm, which is a value already allowing to have satisfactory mechanical properties, and 0.7 mm, according to the embodiment. The finished dial is therefore substantially the same thickness as the dials of the prior art, but with a reversal of substrate thickness ratios / enamel layer.
D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description suivante donnée à titre illustratif et non limitatif, en référence aux dessins annexés dans lesquels :
- la
figure 1 représente une vue éclatée en coupe, près d'un bord d'un cadran à pieds chassés selon un premier mode de réalisation; - la
figure 2 correspond à lafigure 1 après assemblage; - la
figure 3 correspond à un deuxième mode de réalisation, et - la
figure 4 correspond à un troisième mode de réalisation.
- the
figure 1 is an exploded sectional view, near an edge of a dial with driven feet according to a first embodiment; - the
figure 2 corresponds to thefigure 1 after assembly; - the
figure 3 corresponds to a second embodiment, and - the
figure 4 corresponds to a third embodiment.
On observera tout d'abord que, pour plus de clarté dans les dessins, toutes les épaisseurs n'ont pas été représentées à la même échelle.It will be observed first of all that, for the sake of clarity in the drawings, not all the thicknesses have been represented on the same scale.
En se référant aux
Un élément inférieur 1 b, également en céramique d'environ 0,4 mm d'épaisseur est pourvu d'un perçage 2 destiné à recevoir un pied cylindrique 9 assujetti par collage et/ou chassage avant d'assembler les éléments inférieurs 1 b et supérieur 1 a au moyen d'un joint de colle 4 et/ou d'une soudure périphérique 6, par exemple par laser ou bombardement électronique.A
Les deux éléments 1 a, 1 b en céramique sont obtenus à partir d'une poudre céramique telle qu'un oxyde d'aluminium ou de zirconium, par pressage ou par le procédé CIM (Ceramic Injection Molting) bien connu. La maîtrise de ce procédé est actuellement suffisante pour produire des pièces ayant une tolérance très serrée ne nécessitant aucune retouche ultérieure, d'autant que le très petit nombre de couches d'émail ne produit pas d'effet de bord. Pour cette raison, il est également possible, bien que non représenté sur les
La conception d'un tel cadran émaillé avec pieds présente en outre l'avantage, dans le cas où le chassage d'un pied briserait l'élément inférieur 1 b et entraînerait sa mise au rebut, de pouvoir conserver l'élément supérieur 1 a qui a la plus grande valeur ajoutée.The design of such an enamelled dial with feet has the further advantage, in the case where the hunting of a foot break the
La
La
Claims (10)
- Enamelled dial with location feet (9) including a first element (1a) made of ceramic together with a second element (1b, 8, 10) with which is mounted at least one foot (9), characterized in that the external surface of said first element (1a) is coated with one or two enamel layers (3) and in that the second element (1b, 8, 10) including at least a housing (2) permitting the fastening of a foot (9) by driving and/or bonding before the assembling of the first and second elements by means of a glueing point as a welding point (4).
- Enamelled dial according to claim 1, characterized in that the second element (1b) is also made of ceramic with slightly the same dimensions and the same thickness as the first element (1a).
- Enamelled dial according to claim 2, characterized in that the ceramic elements (1a, 1b) have a thickness comprised between 0.4 and 0.5 mm.
- Enamelled dial according to claim 1, characterized in that the second element (8) is made of a metallic sheet thinner than the first ceramic element (1a) but owing the same dimension.
- Enamelled dial according to claim 1, characterized in that the second element (10) is made of a metallic block intended to be housed by driving/bonding in a housing including in the first element (1a).
- Enamelled dial according to any of claims 2 or 4, characterized in that the first element (1a) made of ceramic further includes some handle's axis cuttings and if necessary some apertures facing the corresponding cuttings of the second element (1b, 8).
- Manufacturing method of an enamelled dial with drived feet, characterized in that it includes the following steps:- forming a first substrate (1a) made of ceramic with accurate dimensions of the wanted dial;- coating on the external face of the first substrate (1 a) one to two enamel layers (3);- forming a second element (1b, 8, 10) including a housing (2) in which is driven and/or bonded a dial foot (9);- assembling the first (1a) and the second (1b) elements by bonding and/or welding.
- Method according to claim 7, characterized in that the second element is also made of ceramic with slightly the same dimensions and the same thickness as the firs element (1a).
- Method according to claim 7, characterized in that the second element (8) is made of a metallic sheet thinner than the first ceramic element (1a) but owing the same dimensions.
- Method according to claim 7, characterized in that the second element (10) is made of a metallic block intended to be housed by driving/bonding in a housing (12) included in the first element (1 a).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE60320805T DE60320805D1 (en) | 2003-12-03 | 2003-12-03 | Enamelled dial with set feet and manufacturing process for it |
| EP20030027696 EP1538493B1 (en) | 2003-12-03 | 2003-12-03 | Enamelled watch face with driven-in feet and its process of fabrication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20030027696 EP1538493B1 (en) | 2003-12-03 | 2003-12-03 | Enamelled watch face with driven-in feet and its process of fabrication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1538493A1 EP1538493A1 (en) | 2005-06-08 |
| EP1538493B1 true EP1538493B1 (en) | 2008-05-07 |
Family
ID=34442940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20030027696 Expired - Lifetime EP1538493B1 (en) | 2003-12-03 | 2003-12-03 | Enamelled watch face with driven-in feet and its process of fabrication |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1538493B1 (en) |
| DE (1) | DE60320805D1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1640822B1 (en) * | 2004-09-22 | 2012-08-01 | Asulab S.A. | Multi-level enamelled watch face |
| EP2400354A1 (en) * | 2010-06-22 | 2011-12-28 | The Swatch Group Research and Development Ltd. | Dial feet for a timepiece |
| EP2503414A1 (en) * | 2011-03-23 | 2012-09-26 | Rubattel et Weyermann S.A. | Verziertes emailliertes Werkstück |
| CN103576530A (en) * | 2012-07-19 | 2014-02-12 | 王辉 | Ceramic watch |
| EP3835880B1 (en) | 2019-12-10 | 2022-08-10 | Comadur S.A. | Horological dial with feet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH352962A (en) * | 1957-03-22 | 1961-03-15 | Bloesch Walter | Process for the production of a dial and dial produced by this process |
| JPS4881565A (en) * | 1972-02-01 | 1973-10-31 | ||
| JPS569074U (en) * | 1979-06-29 | 1981-01-26 | ||
| JPS5881977A (en) * | 1981-11-09 | 1983-05-17 | Toru Mashida | Preparation of decorative base body |
-
2003
- 2003-12-03 EP EP20030027696 patent/EP1538493B1/en not_active Expired - Lifetime
- 2003-12-03 DE DE60320805T patent/DE60320805D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE60320805D1 (en) | 2008-06-19 |
| EP1538493A1 (en) | 2005-06-08 |
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