EP2482142B1 - Oscillating mass - Google Patents

Oscillating mass Download PDF

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Publication number
EP2482142B1
EP2482142B1 EP11152381.7A EP11152381A EP2482142B1 EP 2482142 B1 EP2482142 B1 EP 2482142B1 EP 11152381 A EP11152381 A EP 11152381A EP 2482142 B1 EP2482142 B1 EP 2482142B1
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EP
European Patent Office
Prior art keywords
plastic material
oscillating
fibres
mixture
oscillating weight
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.)
Active
Application number
EP11152381.7A
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German (de)
French (fr)
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EP2482142A1 (en
Inventor
Christian Poffet
Xavier Tinguely
Andrés Cabezas Jurin
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.)
ETA Manufacture Horlogere Suisse SA
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ETA Manufacture Horlogere Suisse 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.)
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Publication date
Application filed by ETA Manufacture Horlogere Suisse SA filed Critical ETA Manufacture Horlogere Suisse SA
Priority to EP11152381.7A priority Critical patent/EP2482142B1/en
Priority to JP2012006530A priority patent/JP5972580B2/en
Priority to US13/353,476 priority patent/US9004749B2/en
Priority to CN201210019300.5A priority patent/CN102621869B/en
Priority to RU2012102758/12A priority patent/RU2587565C2/en
Publication of EP2482142A1 publication Critical patent/EP2482142A1/en
Priority to HK13101319.7A priority patent/HK1174403A1/en
Application granted granted Critical
Publication of EP2482142B1 publication Critical patent/EP2482142B1/en
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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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/16—Construction of the weights
    • G04B5/165—Weights consisting of several parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making

Definitions

  • the present invention relates to the oscillating masses for an automatic winding watch.
  • the present invention relates more particularly to such oscillating masses made of plastic or resin.
  • Watch parts made of plastic or synthetic resin are known. These parts can be made by molding processes, which has the advantage of allowing to obtain various shapes sometimes very complicated without any recovery operation. These pieces also have the characteristic of having a density close to 1 and therefore of being light; which is most often an advantage.
  • the characteristic of lightness that the pieces made of plastic can also constitute a serious defect. This is particularly the case when the plastic part is intended to serve as an oscillating weight in an automatic winding. Indeed, in an automatic winding, the winding torque is proportional to the weight of the oscillating weight.
  • the patent document US 3,942,317 proposes to make by molding parts having a density greater than 7. These parts are made from a mass of plastic material in which a large amount of material has been dispersed. particles of a heavy metal.
  • the proposed method is intended in particular for producing oscillating masses for winding automatic watches. It will be noted that, according to this prior document, it is essential that the heavy metal charge be at least 99% pure. In addition, there should be no trace of carbon.
  • Another disadvantage of the parts produced by this method is that they are brittle. Indeed, tests performed by the Applicant have shown that the oscillating weight has a tendency to break in case of shock on the watch.
  • An object of the present invention is to overcome the disadvantages of the prior art mentioned above.
  • the present invention achieves this goal by providing an oscillating weight for automatic watch winding according to the appended claim 1.
  • the term “heavy metal” refers to any metal whose density is greater than 11, and preferably greater than 17.
  • the mixture consisting of the plastic material and its load must be injected into a mold in the liquid state.
  • tests carried out by the applicant have shown that the viscosity of the injected mixture increases sharply when fibers were added to the heavy metal. From a certain fiber concentration, the viscosity of the mixture became even so high that the injection operation of the mixture in a mold could not proceed normally.
  • the Applicant has discovered that, when the fiber concentration in the mixture is in a range between 1.5% and 7% of the total weight, the mixture can be normally injected into a mold.
  • the fiber concentration is relatively low, it is sufficient to give the oscillating mass good impact resistance.
  • tungsten can be obtained in the form of granules of polyamide 12 (density 1.02) loaded with tungsten powder (density 19.2). These granules are marketed in particular under the trademark Gravi-Tech ® GRV-NJ-110-W by the company PolyOne Corporation. The mixture from which the granules are made has a density of 11.0 and is suitable for injection molding.
  • fibers mixed with polyamide 12 are marketed, for example, the EMS-GRIVORY company under the name Grilamid ® TRVX Natur-50X9. It is also pellets. They consist of approximately 50% (by volume) of glass fibers; the rest being polyamide 12.
  • the mixture according to the invention can be produced by mixing granules of Grilamid TR e and Gravi-Tech 'so that the Grilamid preferably constitutes between 2.5% and 5% of the total weight of the mixture.
  • the mixture of granules can be used either directly for supplying the molding reservoir of a conventional type of installation, as a raw material for manufacturing new granules incorporating both the plastic material, the heavy metal and the fibers.
  • injection molding of the heavy metal-filled plastics material and fibers enables relatively complicated shaped oscillating masses to be formed in a single shaping operation without the need for rework or finishing operations.
  • injection molding makes it possible to produce the oscillating mass represented in FIG. figure 1 or 2 .
  • This "monobloc" oscillating weight comprises an oscillating sector 1, and a hub provided with a cylindrical bore 4 ( figure 2 ) provided for pivoting the oscillating mass.
  • the hub 3 may be constituted by a metal barrel 2 ( figure 1 ) provided with a pinion (not shown) provided for transmitting oscillation movements to the winding train (not shown), and above which the oscillating mass is overmolded.
  • the heavy segment and the board of the mass oscillating from two different plastics.
  • the tungsten-loaded plastic may be injected to form the heavy segment during a first operation.
  • plastic material loaded only fibers during a second operation to form the board of the oscillating mass.
  • the invention is not limited to the use of the substances mentioned above as an example.
  • those skilled in the art will understand that a large number of plastics could be substituted for the polyamide 12.
  • tungsten could be replaced by gold, tantalum or any other heavy metal.
  • the glass fibers could be replaced by carbon fibers or any other filling fibers known to those skilled in the art.

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

La présente invention concerne les masses oscillantes pour montre à remontoir automatique. La présente invention concerne plus particulièrement de telles masses oscillantes réalisées en plastique ou en résine.The present invention relates to the oscillating masses for an automatic winding watch. The present invention relates more particularly to such oscillating masses made of plastic or resin.

ART ANTERIEURPRIOR ART

On connaît des pièces de montre réalisées en matière plastique ou en résine synthétique. Ces pièces peuvent être réalisées par des procédés de moulage, ce qui présente l'avantage de permettre d'obtenir des formes diverses parfois très compliquées sans aucune opération de reprise. Ces pièces ont également la caractéristique d'avoir une densité voisine de 1 et donc d'être légères ; ce qui constitue le plus souvent un avantage.Watch parts made of plastic or synthetic resin are known. These parts can be made by molding processes, which has the advantage of allowing to obtain various shapes sometimes very complicated without any recovery operation. These pieces also have the characteristic of having a density close to 1 and therefore of being light; which is most often an advantage.

Toutefois, on comprendra que la caractéristique de légèreté que présentent les pièces réalisées en plastique peut également constituer un grave défaut. C'est notamment le cas lorsque la pièce en plastique est destinée à servir de masse oscillante dans un remontoir automatique. En effet, dans un remontoir automatique, le couple de remontage est proportionnel au poids de la masse oscillante.However, it will be understood that the characteristic of lightness that the pieces made of plastic can also constitute a serious defect. This is particularly the case when the plastic part is intended to serve as an oscillating weight in an automatic winding. Indeed, in an automatic winding, the winding torque is proportional to the weight of the oscillating weight.

Dans le but de remédier au défaut mentionné ci-dessus, le document de brevet US 3,942,317 propose de réaliser par moulage des pièces ayant une densité supérieure à 7. Ces pièces sont réalisées à partir d'une masse de matière plastique dans laquelle ont été dispersées une grande quantité de particules d'un métal lourd. Le procédé proposé est destiné notamment à la réalisation de masses oscillantes pour remontoir de montres automatiques. On notera que, selon ce document antérieur, il est indispensable que la charge de métal lourd soit pure à au moins 99%. De plus, il ne devrait pas y avoir de traces de carbone. Un autre inconvénient des pièces réalisées par ce procédé est qu'elles sont cassantes. En effet, des tests effectués par la demanderesse ont montré que la masse oscillante avait tendance à se casser en cas de choc sur la montre.In order to remedy the defect mentioned above, the patent document US 3,942,317 proposes to make by molding parts having a density greater than 7. These parts are made from a mass of plastic material in which a large amount of material has been dispersed. particles of a heavy metal. The proposed method is intended in particular for producing oscillating masses for winding automatic watches. It will be noted that, according to this prior document, it is essential that the heavy metal charge be at least 99% pure. In addition, there should be no trace of carbon. Another disadvantage of the parts produced by this method is that they are brittle. Indeed, tests performed by the Applicant have shown that the oscillating weight has a tendency to break in case of shock on the watch.

BREF EXPOSE DE L'INVENTIONBRIEF SUMMARY OF THE INVENTION

Un but de la présente invention est de remédier aux inconvénients de l'art antérieur susmentionnés. La présente invention atteint ce but en fournissant une masse oscillante pour remontoir automatique de montre conforme à la revendication 1 annexée.An object of the present invention is to overcome the disadvantages of the prior art mentioned above. The present invention achieves this goal by providing an oscillating weight for automatic watch winding according to the appended claim 1.

Précisons qu'ici, l'expression « métal lourd » désigne tout métal dont la densité est supérieure à 11, et préférablement supérieure à 17.Note that here, the term "heavy metal" refers to any metal whose density is greater than 11, and preferably greater than 17.

Pour réaliser la masse oscillante selon l'invention, le mélange constitué par la matière plastique et sa charge doit être injecté dans un moule à l'état liquide. Or, des essais réalisés par la demanderesse ont montré que la viscosité du mélange à injecté augmentait fortement lorsque des fibres étaient ajoutées au métal lourd. A partir d'une certaine concentration en fibres, la viscosité du mélange devenait même tellement élevée que l'opération d'injection du mélange dans un moule ne pouvait plus se dérouler normalement. Toutefois, la demanderesse à découvert que, lorsque la concentration de fibres dans le mélange est située dans une plage entre 1,5% et 7% du poids total, le mélange peut être injecté normalement dans un moule. De plus, de manière étonnante, bien que la concentration en fibres soit relativement basse, elle est suffisante pour conférer à la masse oscillante une bonne résistance aux chocs.To achieve the oscillating mass according to the invention, the mixture consisting of the plastic material and its load must be injected into a mold in the liquid state. However, tests carried out by the applicant have shown that the viscosity of the injected mixture increases sharply when fibers were added to the heavy metal. From a certain fiber concentration, the viscosity of the mixture became even so high that the injection operation of the mixture in a mold could not proceed normally. However, the Applicant has discovered that, when the fiber concentration in the mixture is in a range between 1.5% and 7% of the total weight, the mixture can be normally injected into a mold. In addition, surprisingly, although the fiber concentration is relatively low, it is sufficient to give the oscillating mass good impact resistance.

BREVES DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple non limitatif, et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en plan de dessus d'une masse oscillante de remontoir selon un mode particulier de réalisation de l'invention ;
  • la figure 2 est une vue en perspective d'une variante de la masse oscillante de la figure 1.
Other features and advantages of the present invention will appear on reading the following description, given solely by way of non-limiting example, and with reference to the appended drawings in which:
  • the figure 1 is a plan view from above of an oscillating winding mass according to a particular embodiment of the invention;
  • the figure 2 is a perspective view of a variant of the oscillating mass of the figure 1 .

DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT

Pour réaliser une masse oscillante selon la présente invention, il faut d'abord préparer un mélange homogène contenant la matière plastique, le métal lourd et les fibres ; ce mélange étant à l'état liquide. De manière avantageuse, il est possible d'utiliser des produits intermédiaires disponibles dans le commerce pour préparer le mélange.To achieve an oscillating mass according to the present invention, it is first necessary to prepare a homogeneous mixture containing the plastic material, the heavy metal and the fibers; this mixture being in the liquid state. Advantageously, it is possible to use commercially available intermediates to prepare the mixture.

On peut par exemple se procurer le tungstène sous la forme de granulés de polyamide 12 (densité 1,02) chargé de poudre de tungstène (densité 19,2). Ces granulés sont commercialisés notamment sous la marque Gravi-Tech® GRV-NJ-110-W par la société PolyOne Corporation. Le mélange dont sont faits les granulés a une densité de 11.0 et il convient pour le moulage par injection. De même, des fibres mélangées à du polyamide 12 sont commercialisées, par exemple, par la société EMS-GRIVORY sous l'appellation Grilamid® TRVX-50X9 Natur. Il s'agit également de granulés. Ils sont constitués d'environ 50% (en volume) de fibres de verre ; le reste étant du polyamide 12.For example, tungsten can be obtained in the form of granules of polyamide 12 (density 1.02) loaded with tungsten powder (density 19.2). These granules are marketed in particular under the trademark Gravi-Tech ® GRV-NJ-110-W by the company PolyOne Corporation. The mixture from which the granules are made has a density of 11.0 and is suitable for injection molding. Similarly, fibers mixed with polyamide 12 are marketed, for example, the EMS-GRIVORY company under the name Grilamid ® TRVX Natur-50X9. It is also pellets. They consist of approximately 50% (by volume) of glass fibers; the rest being polyamide 12.

On peut réaliser le mélange selon l'invention en mélangeant des granulés de Grilamid TRe et de Gravi-Tech' de manière à ce que le Grilamid constitue de préférence entre 2,5% et 5% du poids total du mélange. Le mélange de granulés peut être utilisé soit directement pour alimenter le réservoir de moulage d'une installation de type usuel, soit comme matière première pour fabriquer de nouveaux granulés incorporant à la fois la matière plastique, le métal lourd et les fibres. Dans ce dernier cas, on peut par exemple introduire les deux sortes de granulés dans une boudineuse qui procède au chauffage et au malaxage du mélange, puis à l'extrusion du mélange sous pression sous forme d'un boudin qui est sectionné de façon à donner des nouveaux granulés utilisables directement dans une installation de moulage. On comprendra que les granulés de Grilamid TR® et de Gravi-Tech® ont des densités très différentes. Les granulés de Grilamid TR® ont donc tendance à se concentrer dans la partie supérieure du mélange. Il est donc important de s'assurer que le mélange est bien homogène, de manière à garantir une bonne reproductibilité des pièces moulées.The mixture according to the invention can be produced by mixing granules of Grilamid TR e and Gravi-Tech 'so that the Grilamid preferably constitutes between 2.5% and 5% of the total weight of the mixture. The mixture of granules can be used either directly for supplying the molding reservoir of a conventional type of installation, as a raw material for manufacturing new granules incorporating both the plastic material, the heavy metal and the fibers. In the latter case, it is possible, for example, to introduce the two kinds of granules into an extruder which proceeds to the heating and mixing of the mixture, then to the extrusion of the pressurized mixture in the form of a bead which is sectioned so as to give new granules that can be used directly in a molding installation. It will be understood that Grilamid TR ® and Gravi-Tech ® granules have very different densities. Grilamid TR ® granules therefore tend to concentrate in the upper part of the mixture. It is therefore important to ensure that the mixture is homogeneous, so as to ensure good reproducibility of the molded parts.

Le moulage par injection de la matière plastique chargée de métal lourd et de fibres permet de réaliser des masses oscillantes de forme relativement compliquée en une seule opération de mise en forme, sans nécessiter d'opération de reprise ou de finition. A titre d'exemple, le moulage par injection permet de réaliser la masse oscillante représentée dans la figure 1 ou 2. Cette masse oscillante « monobloc » comporte un secteur oscillant 1, et un moyeu pourvu d'un alésage cylindrique 4 (figure 2) prévu pour assurer le pivotement de la masse oscillante. Ces éléments peuvent être réalisés en une seule opération de moulage par injection. Alternativement, le moyeu 3 peut être constitué par un canon 2 en métal (figure 1) pourvu d'un pignon (non représenté) prévu pour transmettre les mouvements d'oscillation au train de remontage (non représenté), et pardessus lequel la masse oscillante est surmoulée.Injection molding of the heavy metal-filled plastics material and fibers enables relatively complicated shaped oscillating masses to be formed in a single shaping operation without the need for rework or finishing operations. By way of example, injection molding makes it possible to produce the oscillating mass represented in FIG. figure 1 or 2 . This "monobloc" oscillating weight comprises an oscillating sector 1, and a hub provided with a cylindrical bore 4 ( figure 2 ) provided for pivoting the oscillating mass. These elements can be made in a single injection molding operation. Alternatively, the hub 3 may be constituted by a metal barrel 2 ( figure 1 ) provided with a pinion (not shown) provided for transmitting oscillation movements to the winding train (not shown), and above which the oscillating mass is overmolded.

On comprendra en outre que diverses modifications et/ou améliorations évidentes pour un homme du métier peuvent être apportées au mode de réalisation qui fait l'objet de la présente description sans sortir du cadre de la présente invention définie par les revendications annexées. On pourra notamment réaliser le segment lourd et la planche de la masse oscillante à partir de deux matières plastiques différentes. On pourra par exemple injecter la matière plastique chargée de tungstène pour former le segment lourd lors d'une première opération. Ensuite, on pourra injecter de la matière plastique chargée uniquement de fibres lors d'une seconde opération pour former la planche de la masse oscillante. D'autre part, l'invention ne se limite pas à l'utilisation des substances mentionnées plus haut à titre d'exemple. En particulier, l'homme du métier comprendra qu'un grand nombre de matière plastique pourrait être substituées au polyamide 12. En particulier, des matières thermoplastiques ou des résines thermodurcissables. De même, le tungstène pourrait être remplacé par de l'or, du tantale ou tout autre métal lourd. Finalement, les fibres de verres pourraient être remplacées par des fibres de carbones ou toutes autres fibres de remplissage connues de l'homme du métier.It will be further understood that various modifications and / or improvements obvious to those skilled in the art can be made to the embodiment which is the subject of the present description without departing from the scope of the present invention defined by the appended claims. It will be possible in particular to realize the heavy segment and the board of the mass oscillating from two different plastics. For example, the tungsten-loaded plastic may be injected to form the heavy segment during a first operation. Then, we can inject plastic material loaded only fibers during a second operation to form the board of the oscillating mass. On the other hand, the invention is not limited to the use of the substances mentioned above as an example. In particular, those skilled in the art will understand that a large number of plastics could be substituted for the polyamide 12. In particular, thermoplastics or thermosetting resins. Similarly, tungsten could be replaced by gold, tantalum or any other heavy metal. Finally, the glass fibers could be replaced by carbon fibers or any other filling fibers known to those skilled in the art.

Claims (7)

  1. Oscillating weight for a self-winding watch mechanism made out of moulded plastic material, a load of heavy metal particles being dispersed in the plastic material, characterized in that fibres are also dispersed in said plastic material, said fibres forming between 1.5% and 7% of the total weight of the loaded plastic material, and the relative density of the loaded plastic material being greater than 8.
  2. Oscillating weight according to claim 1, characterized in that said fibres form between 2% and 3.5% of the total weight of the loaded plastic material.
  3. Oscillating weight according to claim 1 or 2, characterized in that said fibres are glass fibres.
  4. Oscillating weight according to claim 1 or 2, characterized in that said fibres are carbon fibres.
  5. Oscillating weight according to any of the preceding claims, characterized in that said heavy metal is tungsten.
  6. Oscillating weight according to any of the preceding claims, characterized in that said plastic material is polyamide.
  7. Oscillating weight according to claim 6, characterized in that said polyamide is polyamide 12 (PA 12).
EP11152381.7A 2011-01-27 2011-01-27 Oscillating mass Active EP2482142B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP11152381.7A EP2482142B1 (en) 2011-01-27 2011-01-27 Oscillating mass
JP2012006530A JP5972580B2 (en) 2011-01-27 2012-01-16 Rotating weight
US13/353,476 US9004749B2 (en) 2011-01-27 2012-01-19 Oscillating weight
CN201210019300.5A CN102621869B (en) 2011-01-27 2012-01-21 Oscillating weight
RU2012102758/12A RU2587565C2 (en) 2011-01-27 2012-01-26 Clock rotor
HK13101319.7A HK1174403A1 (en) 2011-01-27 2013-01-30 Oscillating weight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11152381.7A EP2482142B1 (en) 2011-01-27 2011-01-27 Oscillating mass

Publications (2)

Publication Number Publication Date
EP2482142A1 EP2482142A1 (en) 2012-08-01
EP2482142B1 true EP2482142B1 (en) 2013-08-28

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EP11152381.7A Active EP2482142B1 (en) 2011-01-27 2011-01-27 Oscillating mass

Country Status (6)

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US (1) US9004749B2 (en)
EP (1) EP2482142B1 (en)
JP (1) JP5972580B2 (en)
CN (1) CN102621869B (en)
HK (1) HK1174403A1 (en)
RU (1) RU2587565C2 (en)

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Publication number Priority date Publication date Assignee Title
EP2592498A1 (en) * 2011-11-08 2013-05-15 ETA SA Manufacture Horlogère Suisse Oscillating mass
CH707298B1 (en) 2013-03-28 2014-06-13 Eta Sa Manufacture Horlogère Suisse oscillating weight composite material.
EP2979138B1 (en) * 2013-03-28 2017-06-28 ETA SA Manufacture Horlogère Suisse Method for making a swinging body consisting of composite materials
USD759527S1 (en) * 2013-10-16 2016-06-21 Swatch Ltd Oscillating weight
USD772095S1 (en) * 2014-07-16 2016-11-22 Richemont International Sa Oscillating weight
JP1605098S (en) * 2016-11-29 2018-05-28
EP3674816B1 (en) 2018-12-24 2022-04-27 The Swatch Group Research and Development Ltd External part of a timepiece or jewelry made of a heavy composite material
EP3879354A1 (en) * 2020-03-09 2021-09-15 The Swatch Group Research and Development Ltd Oscillating winding mass provided with a decorative element for automatic movement of a timepiece
EP4001356A1 (en) 2020-11-24 2022-05-25 ETA SA Manufacture Horlogère Suisse Item made of a heavy plastic material
USD1025243S1 (en) * 2022-04-08 2024-04-30 Lvmh Swiss Manufactures Sa Oscillating weight
EP4276143A1 (en) 2022-05-11 2023-11-15 ETA SA Manufacture Horlogère Suisse Item made of a heavy plastic material

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CH249417A (en) * 1945-03-20 1947-06-30 Bondy S A Self-winding watch by oscillating weight.
CH500521A (en) * 1968-09-06 1970-08-31 Meyer Ferdinand Process for the production of an oscillating mass for self-winding watches
US3803830A (en) * 1972-06-29 1974-04-16 Bunker Ramo Plastic escapement lever
US3942317A (en) 1974-12-03 1976-03-09 Ebauches Bettlach S.A. Component parts for watch movements
JPS60244888A (en) * 1984-05-21 1985-12-04 Seiko Epson Corp Weight composition for self-winding wristwatch
JPS6191254A (en) * 1984-10-12 1986-05-09 Seiko Epson Corp Wrist watch case
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CN2638109Y (en) * 2003-08-06 2004-09-01 郑金良 Automatic hammer
US8715105B2 (en) * 2003-09-19 2014-05-06 Nike, Inc. Golf club head having an interchangeable bridge member
GB0324439D0 (en) * 2003-10-20 2003-11-19 Levingston Gideon R Minimal thermal variation and temperature compensating non-magnetic balance wheels and methods of production of these and their associated balance springs
RU2419540C2 (en) * 2006-02-28 2011-05-27 Торэй Индастриз, Инк. Base material with reinforcing fibre and method of producing laminar materials thereof
EP2119544B1 (en) * 2007-01-26 2019-05-08 Toray Industries, Inc. Process for producing a preform for molding fiber-reinforced resin beam, apparatus for producing the same, and process for producing fiber-reinforced resin beam
US7785212B2 (en) * 2008-02-14 2010-08-31 Nike, Inc. Extreme weighted hybrid and other wood-type golf clubs and golf club heads

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Publication number Publication date
EP2482142A1 (en) 2012-08-01
CN102621869A (en) 2012-08-01
US20120195173A1 (en) 2012-08-02
JP5972580B2 (en) 2016-08-17
HK1174403A1 (en) 2013-06-07
CN102621869B (en) 2014-07-09
US9004749B2 (en) 2015-04-14
JP2012154925A (en) 2012-08-16
RU2587565C2 (en) 2016-06-20
RU2012102758A (en) 2013-08-10

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