EP3792700B1 - Oszillator einer uhr mit flexiblem zapfen - Google Patents

Oszillator einer uhr mit flexiblem zapfen Download PDF

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Publication number
EP3792700B1
EP3792700B1 EP19197512.7A EP19197512A EP3792700B1 EP 3792700 B1 EP3792700 B1 EP 3792700B1 EP 19197512 A EP19197512 A EP 19197512A EP 3792700 B1 EP3792700 B1 EP 3792700B1
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EP
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Prior art keywords
flexible
oscillator
elastic
strips
pivot
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EP19197512.7A
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English (en)
French (fr)
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EP3792700A1 (de
Inventor
David Chabloz
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/02—Shock-damping bearings
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/06—Manufacture or mounting processes

Definitions

  • the present invention relates to a watch oscillator with a flexible pivot, that is to say a watch oscillator whose balance is guided in rotation by an arrangement of elastic parts and not by a physical axis of rotation rotating in bearings.
  • the flexible pivot exerts a restoring torque on the balance, like the hairspring of a balance-spring oscillator.
  • a flexible pivot oscillator does not produce dry friction during operation. It therefore has a better quality factor.
  • the oscillator according to EP 2975469 comprises a balance wheel assembled to a flexible pivot itself made up of an assembly of elastic blades, this assembly of elastic blades having a cross shape in top view and being located below the balance wheel.
  • the oscillator according to WO 2018/100122 is planar and comprises n inertial rigid portions connected together two by two by n elastic coupling connections, these n inertial rigid portions being connected to a support by respectively n elastic suspension connections and being arranged according to an axial symmetry of order n.
  • EP 3476748 describes a pivot mechanism which can be used in watchmaking and comprising fixed and movable annular parts superimposed and connected by flexible connections arranged in parallel, each flexible connection comprising, in series, a first elastic blade, an intermediate rigid body and a second elastic blade, the intermediate rigid bodies, located in the center of the mechanism, being separated by slots and connected together by elastic coupling elements.
  • the performance of a flexible pivot oscillator is expressed in particular in terms of quality factor, insensitivity to gravity and isochronism.
  • the present invention aims to propose a watch oscillator with a flexible pivot capable of having excellent performance with regard to at least one of the three aforementioned criteria which are the quality factor, insensitivity to gravity and isochronism.
  • a watch oscillator 1 for a timepiece such as a wristwatch or a pocket watch, comprises a shaft 2, two balances 3, 4 integral with the shaft 2, a flexible pivot 5 and a support 6.
  • Two examples of flexible pivot 5 and support 6 are shown in the drawings, respectively in figures 1 to 4 and to the figure 5 .
  • support 6 is in one part.
  • the support 6 is intended to be fixed on a fixed or mobile frame of the movement of the timepiece, typically on the plate of the movement.
  • the flexible pivot 5 is preferably made up of coplanar elements.
  • the rockers 3, 4 are located axially on either side of the flexible pivot 5, preferably in mean planes P1, P2 which are symmetrical to each other with respect to the mean plane P of the flexible pivot 5.
  • balancers 3, 4 constitute the inertial part of the oscillator 1 and the flexible pivot 5 its elastic part. Unlike a conventional flexible pivot oscillator and like a balance-spring oscillator, these inertial and elastic parts are separated in the present invention.
  • the flexible pivot 5 connects the shaft 2 to the support 6, guides the shaft 2 in rotation relative to the support 6 around the axis A of the shaft 2 and exerts an elastic return torque on the shaft 2 to recall into a rest position, namely the rest position illustrated in figures 1 And 3 .
  • the shaft 2 and balance beams 3, 4 assembly is held to the support 6 only by the flexible pivot 5. The rotation of the assembly 2, 3, 4 therefore does not generate dry friction.
  • the flexible pivot 5 includes (cf. figures 4 And 5 ) a rigid hub 7 surrounding the shaft 2 and integral with it, and a number N of elastic members 8 each connecting the hub 7 to the support 6.
  • the number N is at least equal to three. It is equal to four in the example shown in figures 1 to 4 and three in the example of figure 5 .
  • Each elastic member 8 comprises, in series, a pair of elastic blades 9, an intermediate rigid body 10 and a flexible guide 11.
  • the pair of elastic blades 9 connects the intermediate rigid body 10 to the hub 7 and the flexible guide 11 connects the support 6 to the intermediate rigid body 10.
  • each pair of elastic blades 9 extend in intersecting directions to form a pivot with an offset center of rotation also called RCC (Remote Center Compliance) pivot.
  • Each pair of elastic blades 9 defines in the plane P a pair of half-axes 12 having as their origin the same point located on axis A. These pairs of half-axes 12 are arranged around axis A according to a symmetry of order N.
  • the blades of the N pairs of elastic blades 9 all have the same stiffness.
  • the blades of the N pairs of elastic blades 9 are identical and in particular have identical dimensions.
  • the present invention takes into account the isotropic or anisotropic nature of the material from which the flexible pivot 5 is made.
  • the flexible guide 11 is arranged to allow guided movement of the intermediate rigid body 10 relative to the support 6 substantially in translation along the bisector B of the half-axes 12. This guided movement occurs during operation regular of the oscillator 1 (and therefore even in the absence of shocks or accelerations received by the watch) where the hub 7 - shaft 2 - balance wheels 3, 4 assembly rotates around the axis A.
  • the flexible guidance 11 typically comprises at least one elastic blade extending in a direction perpendicular to the bisector B, and preferably two parallel elastic blades extending in a direction perpendicular to the bisector B, as shown.
  • the flexible guides 11 have the same stiffness.
  • the pairs of elastic blades 9 guide the hub 7 and therefore the hub 7 - shaft 2 - balance beams 3, 4 assembly in rotation around the axis A and the flexible guides 11 provide degrees of freedom inside the flexible pivot 5 which prevents the latter from being hyperstatic.
  • the N order symmetry of the pairs of half-axes 12 allows the hub 7 to rotate properly around an axis A which is fixed or almost fixed, all the more so if N is even, for example equal to four as in THE figures 1 to 4 , since then the forces applied to the hub 7 cancel out.
  • the point(s) 13 of junction of the flexible guide 11 to the intermediate rigid body 10 are on the bisector B or are close to it, the quality of the rotation is further improved.
  • the pairs of elastic blades 9 have a stiffness which is very little sensitive to the direction of gravity. Indeed, in a given vertical position of the oscillator 1, the force of gravity presents, for each pair of elastic blades 9, a first component parallel to the bisector B and a second component perpendicular to the bisector B. Thanks to flexible guidance 11, the first component is not transmitted to the pair of elastic blades 9. As for the second component, it produces opposite effects on the elastic blades 9, since it stresses one of the blades in compression and the other blade in traction. The changes in stiffness of the two blades therefore compensate for each other.
  • the presence of the two balances 3, 4 on either side of the flexible pivot 5 in the direction of the axis A allows the inertial part which constitutes these balances 3, 4 to have its center of mass in the mean plane P of the flexible pivot 5, that is to say halfway up the elastic blades 9, 11. This characteristic further improves the insensitivity of the oscillator 1 to gravity.
  • the center of mass of the inertial part 3, 4 is also on axis A, to also promote insensitivity to gravity.
  • each elastic member 8 can be dimensioned so that the flexible guide 11 compensates for the non-linearity of the torque produced by the pair of elastic blades 9 as a function of the angle of rotation and thus makes the oscillator 1 isochronous, this is i.e. makes its frequency independent of the amplitude of oscillation.
  • the diagram of the Figure 6 shows by the graph G1 the stiffness of a pair of RCC blades alone and by the graph G2 the stiffness of an elastic member 8 with its pair of RCC blades 9, its intermediate rigid body 10 and its flexible guide 11, the stiffness being defined as the ratio of effort (here: torque) to displacement (here: angle of rotation).
  • Graphs G1 and G2 were obtained with the following parameters: angle between the RCC 9 blades: 30°; hub external diameter 7: 1 mm; length of RCC 9 blades: 3 mm; length of the blades flexible guide 11: 3 mm; spacing of the blades of the flexible guide 11: 0.8 mm; distance between the straight line joining the junction points of the RCC blades 9 to the intermediate rigid body 10 and the nearest elastic blade of the flexible guide 11: 1.58 mm.
  • the balances 3, 4 can be of the same type as those of traditional balance-spring oscillators, and can thus comprise a rim 3a, 4a, a hub 3b, 4b surrounding the shaft 2 and rigid arms 3c, 4c connecting the rim 3a , 4a to hub 3b, 4b.
  • the serge 3a, 4a can have the shape of a continuous ring, as shown, or interrupted.
  • the balances 3, 4 can be fixed on the shaft 2 in a conventional manner by riveting. They are typically made of a dense material such as beryllium copper, gold, platinum or silicon carrying masses of dense metal. The balances 3, 4 can therefore have a small diameter for a given moment of inertia. In this way, friction with the air will be reduced, thus increasing the quality factor.
  • the flexible pivot 5 is preferably monolithic, and preferably monolithic with the support 6 as in the examples illustrated.
  • Its material is chosen for the manufacturing precision it allows and for its elastic properties. It may for example be silicon, silicon covered with silicon dioxide, glass, sapphire, quartz, metallic glass, a metal or alloy.
  • the flexible pivot 5 can be obtained by engraving (in particular deep reactive ion engraving known as DRIE), LIGA, milling, electroerosion, molding or other.
  • the hub 7 can be fixed to the shaft 2 by gluing, welding, soldering, driving or tightening by means of elastic arms, for example.
  • the separation of the inertial part 3, 4 and the flexible pivot 5 implemented by the invention facilitates adjustment of the frequency of the oscillator 1.
  • the moment of inertia and the unbalance of the balances 3, 4 can in fact be measured and corrected easily while the torque of the flexible pivot 5 can be measured without prior assembly with the balances 3, 4 and modified independently of the balances 3, 4.
  • the oscillator 1 is relatively easy to manufacture since the flexible pivot 5 is a single-level structure and that the balances 3, 4 can be conventional and assembled in a conventional manner to the shaft 2.
  • the ease of manufacture is all the more obvious if we compare oscillator 1 to the oscillators with separate crossed blades described in the documents EP 2911012 And WO 2016/096677 , for example, which require the use of specific techniques to make the blades and separate them.
  • the present invention does not, however, exclude that the blades of each pair of elastic blades 9 are non-coplanar nor that the pairs of elastic blades 9 are non-coplanar.
  • the flexible pivot 5 can be made indifferently in an isotropic material or in an anisotropic material presenting, with regard to the modulus of elasticity, a quaternary symmetry, without it being necessary to give the elastic blades 9, likewise than the elastic blades 11, different dimensions.
  • the isotropic material can for example be monocrystalline silicon cut according to a plane of the ⁇ 111 ⁇ family or polycrystalline silicon.
  • the anisotropic material can for example be monocrystalline silicon cut according to a plane of the ⁇ 100 ⁇ family.
  • the flexible pivot 5 is made of an anisotropic material with quaternary symmetry, it will be oriented relative to the crystal structure of the material so that the quaternary symmetry of the material and that of the flexible pivot 5 correspond.
  • the flexible pivot 5 can be oriented relative to the structure crystalline of the material such that two pairs of opposite elastic blades 9 are arranged along the crystallographic axis [-110] and the other two pairs of opposite elastic blades 9 are arranged along the crystallographic axis [110] , or such that two pairs of opposite elastic blades 9 are arranged along the crystallographic axis [010] and that the other two pairs of opposite elastic blades 9 are arranged along the crystallographic axis [100].
  • the flexible pivot 5 will be made of an isotropic material such as silicon ⁇ 111 ⁇ or polycrystalline silicon if it is desired that all the elastic blades 9 are identical and that all the elastic blades 11 are identical.
  • an anisotropic material such as silicon ⁇ 100 ⁇ , which is more available on the market, is chosen, the elastic blades 9 will be given different dimensions so that they have the same stiffness. Likewise, we will give the elastic blades 11 different dimensions so that they have the same stiffness.
  • the flexible pivot 5 can be oriented relative to the crystal structure of silicon ⁇ 100 ⁇ such that the blades designated by 9a have identical dimensions, that the blades designated by 9b have identical dimensions, that the blades 9a and 9b have different dimensions, for example different lengths and/or thicknesses, that the blades designated by 11a have identical dimensions, that the blades designated by 11b have identical dimensions and that the blades 11a and 11b have different dimensions, for example different lengths and/or thicknesses.
  • the blades of the pairs of elastic blades 9 and flexible guides 11 it is however advantageous for the blades of the pairs of elastic blades 9 and flexible guides 11 to all have the same section (same quadratic moment) in order to limit the effect of manufacturing tolerances on isochronism and on insensitivity to gravity .
  • the flexible pivot 5 is made of silicon by a DRIE etching process, etching defects such as that the clearance angle will change the stiffness of all blades in the same way.
  • any layer of silicon dioxide formed on the flexible silicon pivot 5, for example to make the frequency of the oscillator 1 independent of the temperature and/or increase the mechanical resistance, will modify the stiffness of all the blades of the same way.
  • FIG. 7 shows an oscillator 1' according to a second embodiment of the invention.
  • the oscillator 1' according to this second embodiment comprises a single balance 3 secured to a shaft 2 and two flexible pivots 5 located on either side of the balance 3, preferably in average planes which are symmetrical to each other. on the other relative to the average plane of the balance wheel.
  • the flexible pivots 5 hold the shaft 2 - balance 3 assembly in relation to the support 6 which is here in two separate parts.
  • the oscillator 1" comprises a single balance 3 and a single flexible pivot 5, in other words the balance 4 of the figure 1 or one of the two flexible pivots 5 of the Figure 7 is deleted.
  • stops 14 are provided to protect the flexible pivot(s) 5 in the event of acceleration or significant impact.
  • the stops 14 are fixed relative to the support 6 and each have a bore which receives one end of the shaft 2, but they remain out of contact with the moving elements (shaft 2, balance wheel(s) 3, 4, pivot(s) ) flexible(s) 5) of the oscillator 1, 1', 1" during regular operation thereof in order to avoid any friction.
  • the ends of the shaft 2 can come into contact with the wall of the bore of the stops 14 to limit the deformation of the elastic blades 9, 11 of the flexible pivot(s) 5 in the plane of the latter(s).
  • the hub(s) 7 - shaft 2 - balance wheel(s) 3, 4 assembly or an integral part of this assembly can come into contact with one of the stops 14, thus limiting the deformation of the elastic blades 9, 11 of the or flexible pivots 5 outside the plane of this or these latter.
  • the oscillator 1, 1', 1" according to the invention can be maintained by a conventional escapement, in particular a Swiss anchor escapement.
  • the anchor 15 of such an exhaust can cooperate with a pin 16 secured to the hub 7 of the flexible pivot 5 or to one of the flexible pivots 5.
  • the shaft or rod 17 of the anchor 15 passes through the central opening which defines the serge 3a, 4a of the balance(s) 3, 4, in other words is surrounded by the serge(s) 3a, 4a.
  • the arrangement of the flexible guides 11 as shown in figures 3 to 5 leaves room for the anchor 15, the height of which can thus overlap with the height of the or one of the flexible pivots 5.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Micromachines (AREA)

Claims (19)

  1. Oszillator (1; 1'; 1") einer Uhr, der Folgendes umfasst:
    - eine Unruh (3),
    - eine Welle (2), mit der die Unruh (3) fest verbunden ist, wobei die Welle (2) eine Achse (A) definiert,
    - eine Stütze (6), und
    - einen biegsamen Zapfen (5), der dazu gestaltet ist, die Welle (2) in Bezug auf die Stütze (6) um die Achse (A) drehbar zu führen und ein Rückstellmoment auf die Welle (2) auszuüben,
    und wobei
    - der biegsame Zapfen (5) eine Nabe (7), die fest mit der Welle (2) verbunden ist, und parallel zwischen der Nabe (7) und der Stütze (6) mindestens drei elastische Organe (8) umfasst,
    - wobei jedes elastische Organ (8) in Reihe ein Paar elastische Klingen (9), einen starren Zwischenkörper (10) und eine biegsame Führung (11) umfasst,
    - die Klingen der Paare elastischer Klingen (9) die gleiche Steifigkeit aufweisen und sich entlang von Halbachsen (12) erstrecken, die von der Achse (A) ausgehen,
    - die Paare Halbachsen (12), die jeweils den Paaren elastischer Klingen (9) entsprechen, in der Orthogoalprojektion in einer Ebene senkrecht zur Achse (A) entlang einer Symmetrie Nter Ordnung um die Achse (A) angeordnet sind, wobei N die Anzahl elastischer Organe (8) ist, und
    - in jedem elastischen Organ (8) die biegsame Führung (11) dazu gestaltet ist, während der regelmäßigen Arbeitsweise des Oszillators (1) eine geführte Verlagerung des starren Zwischenkörpers (10) in Bezug auf die Stütze (6) im Wesentlichen translatorisch entlang der Winkelhalbierenden (B) des Paares Halbachsen (12) in der Orthogoalprojektion in der Ebene senkrecht zur Achse (A) zu erlauben.
  2. Oszillator (1; 1'; 1") einer Uhr nach Anspruch 1, dadurch gekennzeichnet, dass in jedem elastischen Organ (8) die Klingen des Paares elastischer Klingen (9) koplanar sind.
  3. Oszillator (1; 1'; 1") einer Uhr nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der biegsame Zapfen (5) aus koplanaren Elementen besteht.
  4. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der biegsame Zapfen (5) monolithisch ist.
  5. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der biegsame Zapfen (5) aus einem isotropen Material besteht, und dadurch, dass die Klingen der Paare elastischer Klingen (9) identisch sind.
  6. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der biegsame Zapfen (5) aus einem anisotropen Material besteht, das, was den Elastizitätsmodul betrifft, eine Symmetrie Nter Ordnung aufweist, wobei N die Anzahl elastischer Organe (8) ist, und dadurch, dass die Klingen der Paare elastischer Klingen (9) identisch sind.
  7. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der biegsame Zapfen (5) aus einem anisotropen Material besteht, und dadurch, dass die Klingen der Paare elastischer Klingen (9) nicht alle identisch sind.
  8. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der biegsame Zapfen (5) mindestens vier der elastischen Organe (8) umfasst.
  9. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der biegsame Zapfen (5) eine gerade Anzahl der elastischen Organe (8) umfasst.
  10. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die biegsamen Führungen (11) die gleiche Steifigkeit aufweisen.
  11. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die biegsame Führung (11) von jedem elastischen Organ (8) mindestens eine elastische Klinge umfasst, die sich in einer Richtung senkrecht zur Winkelhalbierenden (B) erstreckt.
  12. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die biegsame Führung (11) von jedem elastischen Organ (8) parallele elastische Klingen umfasst, die sich in einer Richtung senkrecht zur Winkelhalbierenden (B) erstrecken.
  13. Oszillator (1; 1'; 1") einer Uhr nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die Klingen der Paare elastischer Klingen (9) und der biegsamen Führungen (11) den gleichen Querschnitt aufweisen.
  14. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass in jedem elastischen Organ (8) der oder die Verbindungspunkte (13) der biegsamen Führung (11) mit dem starren Zwischenkörper (10) sich im Wesentlichen auf der Winkelhalbierenden (B) in der Orthogonalprojektion in der Ebene senkrecht zur Achse (A) befinden.
  15. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass die biegsamen Führungen (11) dazu gestaltet sind, die Nichtlinearität des Moments, das durch die Paare elastischer Klingen (9) auf die Welle (2) ausgeübt wird, in Abhängigkeit vom Drehwinkel auszugleichen.
  16. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass die Unruh (3) und der biegsame Zapfen (5) aus unterschiedlichen Materialien hergestellt sind.
  17. Oszillator (1; 1'; 1") einer Uhr nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass er ferner mindestens einen Anschlag (14) umfasst, der in Bezug auf die Stütze (6) fest ist und ein Ende der Welle (2) aufnimmt, wobei dieser Anschlag (14) während der regelmäßigen Arbeitsweise des Oszillators (1) kein bewegliches Element dieses letzteren berührt, aber im Fall eines Stoßes oder einer Beschleunigung, die von dem Oszillator (1; 1'; 1") empfangen wird, einem solchen beweglichen Element (2, 3, 4, 7) als Auflage dienen kann, um die Verformung des biegsamen Zapfens (5) zu begrenzen.
  18. Oszillator (1) einer Uhr nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass er eine zweite Unruh (4) umfasst, die sich auf der anderen Seite des biegsamen Zapfens (5) in Bezug auf die Unruh (3) befindet.
  19. Oszillator (1') einer Uhr nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass er einen zweiten biegsamen Zapfen (5) umfasst, der sich auf der anderen Seite der Unruh (3) in Bezug auf den biegsamen Zapfen (5) befindet.
EP19197512.7A 2019-09-16 2019-09-16 Oszillator einer uhr mit flexiblem zapfen Active EP3792700B1 (de)

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EP3792700B1 true EP3792700B1 (de) 2023-10-04

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4163735A1 (de) 2021-10-05 2023-04-12 Patek Philippe SA Genève Verfahren zur herstellung und einstellung eines oszillators mit flexibler führung und uhrwerk, das einen solchen oszillator umfasst
EP4250019A1 (de) 2022-03-21 2023-09-27 Patek Philippe SA Genève Uhr-oszillator für ein ultraflaches uhrwerk
EP4310603A1 (de) 2022-07-18 2024-01-24 Patek Philippe SA Genève Uhrwerk

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH709291A2 (fr) 2014-02-20 2015-08-28 Suisse Electronique Microtech Oscillateur de pièce d'horlogerie.
CH709881A2 (fr) * 2014-07-14 2016-01-15 Nivarox Sa Guidage flexible horloger.
CH710524A2 (fr) 2014-12-18 2016-06-30 Swatch Group Res & Dev Ltd Résonateur d'horlogerie à lames croisées.
FR3059792B1 (fr) * 2016-12-01 2019-05-24 Lvmh Swiss Manufactures Sa Dispositif pour piece d'horlogerie, mouvement horloger et piece d'horlogerie comprenant un tel dispositif
EP3476748B1 (de) * 2017-10-24 2020-07-15 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Schwenkmechanismus mit flexiblen elementen

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