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EP3379342B1 - Vorrichtung, die eine schnelleinstellfeder für uhrwerke umfasst, die mit einer triebfeder zusammenwirkt - Google Patents

Vorrichtung, die eine schnelleinstellfeder für uhrwerke umfasst, die mit einer triebfeder zusammenwirkt Download PDF

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Publication number
EP3379342B1
EP3379342B1 EP17162423.2A EP17162423A EP3379342B1 EP 3379342 B1 EP3379342 B1 EP 3379342B1 EP 17162423 A EP17162423 A EP 17162423A EP 3379342 B1 EP3379342 B1 EP 3379342B1
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EP
European Patent Office
Prior art keywords
spring
flexible portion
finger
wheel
assembly according
Prior art date
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EP17162423.2A
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English (en)
French (fr)
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EP3379342A1 (de
Inventor
Frédéric Dreyer-Gonzales
Arnaud HOURIET
Frédéric Rondeau
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Officine Panerai AG
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Officine Panerai AG
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Priority to EP17162423.2A priority Critical patent/EP3379342B1/de
Publication of EP3379342A1 publication Critical patent/EP3379342A1/de
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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
    • G04B19/00—Indicating the time by visual means
    • G04B19/28—Adjustable guide marks or pointers for indicating determined points of time
    • G04B19/283—Adjustable guide marks or pointers for indicating determined points of time on rotatable rings, i.e. bezel
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action
    • 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
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/23—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands
    • G04B19/235—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands mechanisms for correcting the additional hand or hands

Definitions

  • the present invention relates to a device comprising a quick-setting spring cooperating with a moving part of a timepiece, in which the spring has a reduced risk of breakage and a longer service life than a conventional quick-setting spring.
  • the present invention relates in particular to a device in which the mobile comprises a rotating bezel.
  • GTT Greenwich Mean Time
  • a GMT watch typically comprises an elastic clutch device comprising a spindle spring.
  • the time zone spring allows the time to be set in the second time zone, by moving the second hour hand (or GMT hand) in successive jumps of a full hour.
  • the first hour hand, the minute hand and the second hand are not affected by this operation.
  • the figure 4 shows such a spindle spring 1 cooperating with a star wheel 4 with twelve teeth 41 kinematically connected to the GMT hand.
  • the spring 1 comprises two flexible arms 21 and two fingers 3 exerting a compressive force on the teeth 41 of the star 4. When the fingers 3 move between a hollow between two successive teeth 41 and the top of one of the teeth, the arms 21 are stressed in deformation.
  • spindle springs of this type are typically made of "maraging C300" or " Durnico® " or similar steel. These spindle springs have a limited lifespan, between 4 (element in Durnico) and 20 years (element in Nivaflex). The service life has a random character, due in particular to the considerable length of the arms 21 and their small sections. However, it is difficult to produce such a spring with larger arm sections without losing the elastic properties of the arms, necessary for the proper functioning of the spring. The manufacturing techniques available impose a ratio between the thickness and the width of the arms at a ratio close to 1.
  • the document WO13102598 describes a spring for a watch mechanism, the spring comprising a body extending between a first end of the spring and a second end of the spring, the spring being intended to be mechanically linked to a frame at each of the first and second ends, the spring comprising, between the first and the second end, at least one member intended to act by contact on an element of the timepiece mechanism.
  • the document EP2905661 describes a rotating bezel device for a timepiece, the device comprising a first rotating ring, a second rotating ring and a first mechanical linking element making it possible to kinematically link the first rotating ring and the second rotating ring.
  • US2008056070 discloses a display for world time zones comprising a bezel which cooperates via hooks with a timepiece mobile.
  • An object of the present invention is to provide a watch assembly comprising a rotating bezel and a device comprising a quick-adjustment spring free from the limitations of known devices, in particular in terms of freedom of design including its form factor, its thickness and/or or its width.
  • Another object of the invention is to provide a watch assembly comprising a rotating bezel and a device comprising a quick-adjustment spring of compact geometry and which makes it possible to reduce the risk of breakage and the random nature of the break.
  • a watch assembly comprising a rotating bezel and a device comprising a rapid adjustment spring and a timepiece mobile, said spring cooperating with said mobile, the spring comprising a finger and a flexible part, the finger cooperating with the mobile so as to be movable with respect to the latter according to a maximum displacement by a relative movement between the mobile and the spring and to exert a force against the mobile thanks to the bending of the flexible part; at least the flexible part of the spring being made of an amorphous metal alloy, the device cooperating with a rotating bezel, and the amorphous metal alloy in which at least the flexible part of the spring is made has a ratio of the elastic limit to its modulus of Young which is at least 0.010.
  • the dimensioning of the flexible part limits the ratio of the maximum stress to the elastic limit to 0.70 at the maximum and preferably 0.64 at the maximum, during the maximum displacement of the finger.
  • the amorphous metal alloy in which at least the flexible part of the spring is made has a ratio of the elastic limit to its Young's modulus which is at least preferably 0.015, and still preferably at least 0.02.
  • a quick-adjust spring 1 is shown in figure 1 , according to one embodiment.
  • the spring 1 is intended to operate in an elastic clutch device of a secondary display indicating the time of the time zone (not represented), for example by moving a hand (also not represented) by successive jumps of a whole hour .
  • the spring 1 comprises a flexible part 2 comprising two flexible arms 21, each having an arc shape so that the two arms form a continuous geometry closed on itself.
  • Each of the arms 21 ends in a finger 3 arranged to cooperate with the teeth 41 of a star wheel 4 with twelve teeth 41.
  • a 6 hour wheel is also shown.
  • the hour wheel 6 is typically driven by a timer (not shown) and itself drives the star wheel 4 in rotation.
  • the finger 3 comprises a projection 31 which is housed in a hollow between two successive teeth 41 of the star with twelve teeth 41.
  • the arms 3 exert a compressive force on the teeth 41 of the star 4.
  • the projections 31 of the fingers 3 of the spring 1 deviate from their rest position in a hollow between two teeth 41 of the star 4 and fall into the immediately following hollow under the effect of their elasticity and the compressive force exerted by the flexible part 2.
  • the spring 1 therefore makes it possible to define twelve stable positions for the secondary hour hand.
  • the two arms 21 are substantially symmetrical so that the two fingers 3 are arranged diametrically opposite, each of the fingers 3 exerting a restoring force towards the axis 42 of pivoting of the star 4.
  • the configuration of the arms 21 allows each fingers 3 to exert a symmetrical force towards the pivot axis 42 of the star 4.
  • the maximum displacement of the finger 3 corresponds to the spacing of the finger 3 between a first position of the spring 1 where each of the fingers 3 are in a hollow between two teeth 41 and a second position of the spring 1 where the fingers 3 are each on the vertex of one of the teeth 41.
  • the maximum displacement of the finger 3 therefore generally corresponds to the height of the teeth 41.
  • the deformation of the finger and of the spring may be greater if there is pre-winding at rest in order to guarantee the shock resistance of the hand or the indicator associated with the star 4.
  • the figure 1 shows the spring in the first position.
  • the spring is shown in the second position.
  • Each of the fingers 3 can include a stud 8 which can slide in an oblong opening (not visible) made in another component (such as the hub of the hour wheel 6) and capable of receiving the stud 8.
  • the oblong openings make it possible to guide the fingers 3 and to impose a precise positioning on them.
  • the oblong openings can also be rectangular or any other suitable shape.
  • At least the flexible part 2 of the spring 1 is made of an amorphous metal alloy having a ratio of the yield stress ⁇ lim to its Young's modulus which is at least 0.010, preferably 0.015, and still preferably at least 0.02.
  • a ratio of the yield stress ⁇ lim to its Young's modulus which is at least 0.010, preferably 0.015, and still preferably at least 0.02.
  • the whole of the spring 1 is made from the solid amorphous metal alloy.
  • the amorphous metallic alloy is chosen from a group comprising a metallic glass.
  • Metallic glasses do not have a precise crystallographic structure and are in a state called vitreous. This gives them very special properties. From a mechanical point of view, the phenomena of deformation and rupture known in crystalline metals no longer exist. It has also been shown that the chemical stability of bulk amorphous alloys is superior to that of conventional alloys.
  • Metallic glasses have a relatively low Young's modulus.
  • Young's modulus of a metallic glass is about two times weaker than that of an alloy such as X2NiCoMo18-9-5 steel known under the name “maraging C300" or " Durnico® " while having a breaking strength substantially equivalent to that of Durnico.
  • Durnico is typically used in watchmaking for the manufacture of complicated parts with high spring properties and resistance to fatigue.
  • a metallic glass spring will have an elongation at break about twice as great as for the same Durnico spring. It is therefore possible to operate a metallic glass spring over a larger deformation range.
  • the picture 3 represents the spring 1 showing simulations of the displacements of the arms 21 and the fingers 3 of the spring 1, as well as the stresses undergone by the different parts of the spring 1.
  • the simulated displacements and stresses are shown for the spring 1 in the second position, that is to say when the fingers 3 are each at the top of one of the teeth 41.
  • the spring 1 is made of a metallic glass based on zirconia, Zr (Zr-BMG) characterized by a density of 6830 kg/m 3 , an elastic limit stress ⁇ lim of 1620 N/mm 2 and a Young's modulus of 81,000 N/mm 2 .
  • the Zr-BMG alloy can include copper, nickel and aluminum as well.
  • the maximum displacement of each of the arms 21, between the first position and the second position of the spring 1, is 0.26 mm (in the middle of the length of the arm 21).
  • the maximum displacement of each of the fingers 3, between the first position and the second position of the spring 1, is 0.19 mm.
  • the maximum stress ⁇ max calculated under these conditions is between 1028 N/mm 2 and 1032 N/mm 2 which results in a ⁇ max / ⁇ lim ratio of 0.64. No aging by fatigue was observed by the inventors after 10 7 cycles of maximum displacement of the fingers 3. The only rupture observed was attributed to wear phenomena caused by the friction between the spring 1 and the star 4.
  • the figure 4 shows a conventional spindle spring 1 made of the Durnico ® alloy, cooperating with a star wheel 4 with twelve teeth 41.
  • the spring 1 is shown (in black) in a position where each of the fingers 3 are in a hollow between two teeth 41 and is represented (in wireframe) in a position where each of the fingers 3 are on the top of one of the teeth 41.
  • the figure 5 represents the same type of simulations carried out for the spring of the picture 3 .
  • the Durnico ® alloy is characterized by a density of 8.1 g/cm 3 , an elastic limit stress ⁇ lim between 1800 N/mm 2 and 2200 N/mm 2 and a Young's modulus of 195000 N/mm 2 .
  • the yield stress ⁇ lim of Durnico is similar to that of Zr-BMG metallic glass but its Young's modulus is about twice as high.
  • the flexible arms 21 will have to be longer when the spring 1 is made from Durnico. Note the longer arms 21 in the geometry of the spring 1 of the figure 4 as well as the folding of the arms more marked.
  • the calculated maximum stress ⁇ max is between 1681 N/mm 2 and 1718 N/mm 2 , which results in a ⁇ max / ⁇ lim ratio of 0.95 for a module of Young of 1800 N/mm 2 and of 0.78 for a Young's modulus of 2200 N/mm 2 .
  • Such values for the ratio ⁇ max / ⁇ lim are high, making the spring sensitive to low cycle fatigue.
  • Metallic glasses having a smaller Young's modulus than for the alloys commonly used for watchmaking applications, but a limit to rupture similar to these alloys allows the exploitation of the metallic glass spring over a wider range of deformation (the elongation at break is about twice as high as for Durnico).
  • the properties of metallic glasses allow the adoption of a spring geometry which is more compact and which makes it possible to reduce stress concentrations.
  • the stresses are distributed in a more homogeneous way in the spring and the metallic glass works in a region farther from the elastic limit, thus reducing the risk of rupture and the random nature of the rupture.
  • the spring 1 made of metallic glass also has better resistance to fatigue, reduced susceptibility to corrosion, and a reduced coefficient of friction compared to a spring made from a conventional alloy.
  • the form factor allowed by the use of this material is also of primary interest.
  • time zone spring for an elastic clutch of a secondary display indicating the time of the time zone.
  • the invention is not limited to such a spring but also applies to any type of quick-adjustment spring and/or elastic element intended to operate in a watch movement.
  • the metal glass spring of the invention can be a rapid time adjustment spring, a rocker return spring, a pawl spring, a driving finger, or a jumper such as a pull tab jumper. or a calendar settings jumper.
  • the bulk amorphous metallic alloy can be shaped starting from a liquid alloy, thereby obtaining a metallic glass.
  • the solidification is then carried out with a very high cooling rate in order to avoid the crystallization of the material, but such a high rate strongly limits the maximum thickness that it is possible to reach.
  • Some bulk amorphous metal alloys can be cooled at significantly lower rates, while retaining an amorphous structure. These amorphous metal alloys allow the use of a much wider range of forming processes. For example, these alloys make it possible to manufacture solid metal glass parts by injection, thus making it possible to obtain more precise shape tolerances than by conventional stamping.
  • alloys also have a much more stable amorphous phase, which makes it possible to carry out various recovery operations on the parts, without the material recrystallizing.
  • finishes for example, polishing or satin-finishing
  • a laser engraving method has been developed to meet the needs of industrial applications.
  • the injection processes of metallic glasses require copper or silicon molds in order to guarantee efficient cooling.
  • the thicknesses of the manufactured parts are limited to a few millimeters in order to extract enough heat and allow sufficiently rapid cooling.
  • the quick-adjust spring 1 is used in combination with a rotating bezel 5 movable in rotation and indexable in rotation, for example with respect to a caseband component 7 of a timepiece.
  • An indexing wheel set (or toothed ring) 4 comprises internal toothing 41.
  • the indexing wheel set is intended to be placed fixed in the caseband component 7.
  • the quick-adjustment spring comprises a ratchet ring 50 comprising several elastic blades 2 each having one end fixed to the ring 50 and the other free end.
  • the indexing mobile 4 and the ring 50 are shown in isolation on the figure 7 .
  • each elastic lamella 2 extend in recesses 51 in the ring 50.
  • the free end of each elastic lamella 2 comprises a finger 3 whose shape is adapted to cooperate with the teeth of the toothing 41 of the indexing mobile 4
  • the ratchet ring 50 comprises three elastic strips 2.
  • the ratchet ring 50 is arranged to be assembled in a fixed manner with the bezel 5 and the indexing mobile 4 to be assembled fixed to the middle part component 7.
  • the finger 3 of the elastic strips 2 cooperates with the teeth of the toothing 41 of the indexing wheel set 4, thus making it possible to angularly index the rotating bezel 5 on the middle component 7.
  • the maximum displacement of the finger 3 is determined by the profile of toothing 41.
  • the configuration of the ratchet ring 50 comprising the elastic blades 2 described above is suitable for applications of angular indexing in a single direction of rotation (for example a bezel).
  • the elastic strips 2 can have a closed geometry.
  • the two ends of the elastic lamella can be fixed (united) to the ratchet ring 50 and the finger 3 arranged so that the elastic lamella 2 is on either side of the finger 3.
  • the finger 3 may correspond to the top of the elastic lamella 2 convex with respect to the internal diameter of the ratchet ring 50.
  • the ratchet ring 50 may comprise a substantially annular elastic blade on which is mounted one or more fingers 3 (which may take the form of a roller).
  • the indexing mobile 4 can then comprise a toothing 41 comprising a continuous profile (for example a profile of sinusoidal shape).
  • the arrangement of the elastic strip 2 and of the finger 3 with respect to the toothing 41 of the indexing mobile 4 can be such that the finger 3 exerts a pressure radially on the toothing 41, axially or partially radial and axial.
  • the figure 6 and 7 show an example where finger 3 exerts pressure radially on toothing 41.
  • An example of finger 3 exerting pressure axially on toothing 41 could correspond to a configuration where finger 3 (and elastic strip 2) exerts a pressure in a direction substantially perpendicular to the axis of rotation of the bezel 5.
  • At least the elastic lamella 2 is made of an amorphous metal alloy, for example a metallic glass.
  • the elastic lamella 2 can be formed integral with the ratchet ring 50. Alternatively, the elastic lamella 2 can be separated from the ratchet ring 50 or hingedly mounted on the ratchet ring 50.
  • the amorphous metal alloy in which at least the elastic lamella 2 is made has a ratio of the elastic limit ( ⁇ lim ) to its Young's modulus of at least 0.010, preferably of at least 0.02 and even more preferably, of at least 0.015.
  • the dimensioning of the elastic lamella 2 limits the ratio of the maximum stress ⁇ max to the elastic limit ⁇ lim to 0.70 at the maximum, preferably 0.64 at the maximum, when the finger 3 moves on the indexing wheel set 4.
  • the amorphous metal alloy makes it possible to obtain favorable elastic properties and a limited size of the adjusting spring 1.
  • the amorphous metal alloy also makes it possible to obtain good tribological properties for at least the elastic strip 2 and to limit the wear, and therefore the resistance over time, of the assembly comprising the quick-adjustment spring 1 and the indexing mobile 4.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)

Claims (10)

  1. Uhrenanordnung, welche einen drehbaren Außenring (5) und eine Vorrichtung, die eine Schnelleinstellfeder (1) und einen Uhrendrehteil (4) aufweist, umfasst, wobei die Feder (1) mit dem Drehteil (4) zusammenwirkt, wobei die Feder (1) einen flexiblen Teil (2) umfasst, der einen Finger (3) aufweist, und der Finger (3) mit dem Drehteil (4) derart zusammenwirkt, dass er in Bezug auf diesen durch eine relative Bewegung zwischen dem Drehteil (4) und der Feder (1) mit einer maximalen Verlagerung verlagerbar ist, und infolge der Durchbiegung des flexiblen Teils (2) eine Kraft auf den Drehteil (4) ausübt;
    wobei wenigstens der flexible Teil (2) der Feder aus einer amorphen Metalllegierung hergestellt ist; wobei die Vorrichtung mit dem drehbaren Außenring (5) zusammenwirkt;
    dadurch gekennzeichnet, dass die amorphe Metalllegierung, aus welcher wenigstens der flexible Teil (2) der Feder (1) hergestellt ist, ein Verhältnis der Streckgrenze (σlim) zu ihrem Elastizitätsmodul von wenigstens 0,010 aufweist; und
    dadurch, dass die Bemessung des flexiblen Teils (2) das Verhältnis der maximalen Spannung (σmax) zur Streckgrenze (σlim) bei der Verlagerung des Fingers (3) auf dem Drehteil (4) auf maximal 0,70, vorzugsweise maximal 0,64 begrenzt.
  2. Anordnung nach dem vorhergehenden Anspruch,
    wobei die amorphe Metalllegierung, aus welcher wenigstens der flexible Teil (2) der Feder (1) hergestellt ist, ein Verhältnis der Streckgrenze (σlim) zu ihrem Elastizitätsmodul vorzugsweise von wenigstens 0,015 und, stärker bevorzugt, von wenigstens 0,020 aufweist.
  3. Anordnung nach einem der vorhergehenden Ansprüche, wobei die amorphe Metalllegierung ein metallisches Glas ist.
  4. Anordnung nach einem der vorhergehenden Ansprüche, wobei der Drehteil einen Drehteil zur Indexierung (4) umfasst, der eine Zahnung (41) umfasst; wobei die maximale Verlagerung des Fingers (3) durch das Profil der Zahnung (41) bestimmt wird.
  5. Anordnung nach Anspruch 4,
    wobei die Feder (1) einen Sperrklinkenring (50) umfasst, der wenigstens einen flexiblen Teil (2) mit einem mit dem Ring (50) fest verbundenen Ende aufweist; wobei der Sperrklinkenring (50) mit dem Außenring (5) fest verbunden ist und der Drehteil zur Indexierung (4) dazu bestimmt ist, mit einer Mittelteilkomponente (7) der Uhr fest verbunden zu sein.
  6. Anordnung nach Anspruch 4 oder 5,
    wobei das andere Ende des flexiblen Teils (2) frei ist; und
    wobei die Feder (1) für Anwendungen der unidirektionalen Winkelindexierung des Außenringes (5) bestimmt ist.
  7. Anordnung nach Anspruch 4 oder 5,
    wobei das andere Ende des flexiblen Teils (2) ebenfalls mit dem Sperrklinkenring (50) fest verbunden ist; und
    wobei die Feder (1) für Anwendungen der bidirektionalen Winkelindexierung des Außenringes (5) bestimmt ist.
  8. Anordnung nach Anspruch 7,
    wobei der flexible Teil (2) eine durchgehende und in sich geschlossene Geometrie bildet.
  9. Anordnung nach einem der Ansprüche 4 bis 8,
    wobei der flexible Teil (2) und der Finger (3) in Bezug auf die Zahnung (41) so angeordnet sind, dass der Finger (3) radial, axial oder jeweils zum Teil radial und axial einen Druck auf die Zahnung (41) ausübt.
  10. Uhrwerk, welches eine Uhrenanordnung nach einem der Ansprüche 1 bis 9 umfasst.
EP17162423.2A 2017-03-22 2017-03-22 Vorrichtung, die eine schnelleinstellfeder für uhrwerke umfasst, die mit einer triebfeder zusammenwirkt Active EP3379342B1 (de)

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EP17162423.2A EP3379342B1 (de) 2017-03-22 2017-03-22 Vorrichtung, die eine schnelleinstellfeder für uhrwerke umfasst, die mit einer triebfeder zusammenwirkt

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EP17162423.2A EP3379342B1 (de) 2017-03-22 2017-03-22 Vorrichtung, die eine schnelleinstellfeder für uhrwerke umfasst, die mit einer triebfeder zusammenwirkt

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EP3379342A1 EP3379342A1 (de) 2018-09-26
EP3379342B1 true EP3379342B1 (de) 2022-07-20

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH716774B9 (fr) * 2019-11-06 2023-06-30 Officine Panerai Ag Dispositif horloger de couplage et d'indexation.
JP2022099297A (ja) 2020-12-22 2022-07-04 ロレックス・ソシエテ・アノニム ノッチシステム用ばね及び時計ノッチシステム
JP2022099298A (ja) 2020-12-22 2022-07-04 ロレックス・ソシエテ・アノニム ノッチシステム用ばね及び時計ノッチシステム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080056070A1 (en) * 2006-04-12 2008-03-06 Atop Precision Ind. Co., Ltd. Time counting assembly with a display for world time zones
EP2113759A1 (de) * 2008-04-29 2009-11-04 The Swatch Group Research and Development Ltd. Drucksensor mit einer ein amorphes Material enthaltenden Membran
EP2703911A1 (de) * 2012-09-03 2014-03-05 Blancpain SA. Regulierorgan für Uhrwerk

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3467680B2 (ja) * 1998-09-22 2003-11-17 セイコーエプソン株式会社 回転ベゼルの取付構造及びこれを備えた時計
EP1271268B1 (de) * 2001-06-28 2008-03-12 Richemont International S.A. Uhr mit zwei Zeitzonen
EP2798413B1 (de) * 2011-12-27 2020-10-07 Rolex S.A. Feder für uhrwerk
JP6741397B2 (ja) * 2014-02-10 2020-08-19 ロレックス・ソシエテ・アノニムＲｏｌｅｘ Ｓａ 携帯時計側及び時計

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080056070A1 (en) * 2006-04-12 2008-03-06 Atop Precision Ind. Co., Ltd. Time counting assembly with a display for world time zones
EP2113759A1 (de) * 2008-04-29 2009-11-04 The Swatch Group Research and Development Ltd. Drucksensor mit einer ein amorphes Material enthaltenden Membran
EP2703911A1 (de) * 2012-09-03 2014-03-05 Blancpain SA. Regulierorgan für Uhrwerk

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