EP2897003B1 - Movement and mechanical timepiece including a chronograph mechanism - Google Patents

Movement and mechanical timepiece including a chronograph mechanism Download PDF

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Publication number
EP2897003B1
EP2897003B1 EP15151310.8A EP15151310A EP2897003B1 EP 2897003 B1 EP2897003 B1 EP 2897003B1 EP 15151310 A EP15151310 A EP 15151310A EP 2897003 B1 EP2897003 B1 EP 2897003B1
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EP
European Patent Office
Prior art keywords
chronograph
friction spring
chronograph mechanism
movement
movement according
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.)
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Application number
EP15151310.8A
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German (de)
French (fr)
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EP2897003A2 (en
EP2897003A3 (en
Inventor
Demetrio Cabiddu
Mathieu Zimmermann
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.)
Montblanc Montre SA
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Montblanc Montre SA
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Publication date
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Publication of EP2897003A2 publication Critical patent/EP2897003A2/en
Publication of EP2897003A3 publication Critical patent/EP2897003A3/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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/22—Compensation of changes in the motive power of the mainspring
    • G04B1/225—Compensation of changes in the motive power of the mainspring with the aid of an interposed power-accumulator (secondary spring) which is always tensioned
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0823—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G04F7/0857—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with single push-button or actuation member for start-stop and reset

Definitions

  • the present invention relates to a watch movement and to a timepiece comprising a chronograph mechanism.
  • Movements and mechanical timepieces comprising an existing chronograph mechanism have drawbacks such as variation in the movement of the movement, amplitude variations of the regulating member, between the different operating states, particularly on or off the chronograph. These variations in the course of the movement or the isochronism of the regulating organ come at least partly from the fact that the energy consumed is not the same depending on the function, on or off in particular, engaged.
  • CH242662 discloses a mechanical clockwork according to the preamble of claim 1.
  • One of the aims of the present invention is to homogenize the energy consumption regardless of the function or the functions engaged and to stabilize the amplitude variations of the regulating member between the different operating states of the movement.
  • the present invention relates to a watch movement comprising a chronograph mechanism obviating the aforementioned drawbacks which is distinguished by the features set forth in claim 1.
  • the invention also relates to a timepiece comprising a movement as enumerated in claim 1.
  • the present invention relates to a watch movement and a mechanical timepiece comprising a chronograph mechanism.
  • the movement comprises a barrel or motor member, a power train connecting the barrel to a driving wheel, called a field wheel 1, pivoted on a fixed part of the movement and a chronograph wheel 2, also pivoted on a fixed part of the movement, the axis 3 is integral with a core 4.
  • This movement further comprises an intermediate rocker or clutch rocker 5 pivoted on a fixed part of the movement in A by a first end and the second end, free, 5.1 cooperates in a conventional manner with a column wheel 6 also rotated on a fixed part of the movement.
  • the intermediate lever 5 carries an intermediate wheel 7 pivoted freely on this intermediate lever and meshes permanently with the field wheel 1.
  • a large rocker 8 subjected to the action of a control pushbutton 9 accessible from outside the timepiece causes, for each pressure on the control pushbutton 9 step by step, the column wheel 6 thanks to its ratchet 8.1.
  • the novelty and originality of the present watchmaking movement lies in the addition of a friction spring 10 fixed on a fixed part of the movement, generally the plate P thereof, passing close to the axis 1.1 of the field wheel 1 and extending beyond this axis until it is superimposed on the intermediate lever 5.
  • this friction spring is free, that is to say it passes next to the axis 1.1. of the field wheel 1 and that its free end is in contact with nothing.
  • this free end of the friction spring is able to come into contact with an adjustable eccentric abutment 11 carried by the intermediate lever 5.
  • the abutment 11 can be fixed on the intermediate lever 5 and formed by a pin or a machining thereof.
  • the principle of the present invention which makes it possible to minimize or even cancel the amplitude variations of a mechanical clockwork movement comprising a chronograph mechanism therefore consists in adding a friction spring to the field wheel which consumes the energy when the chronograph is triggered, when stopped.
  • the friction of the friction spring consumes no energy when the chronograph is running.
  • the intermediate lever or chronograph clutch serves as control of the friction spring and carries an eccentric that allows the adjustment of the spring tension and therefore of the energy consumed by the friction of this spring on the axis of the wheel of field.
  • the tension of the spring is adjusted by means of the eccentric so that the energy consumption of the friction spring, when the chronograph is at a standstill, is equivalent to the energy that the chronograph consumes when he is engaged.
  • the column wheel 6 can be replaced by a cam in a known manner.
  • the column wheel 6 or the cam thus forms a control member of the intermediate lever 5.
  • the free end of the friction spring 10 is located in the path of a stop 11, adjustable or not, and its middle portion is adapted to be applied against the axis 1.1. of the field wheel 1.
  • the stop is carried by the intermediate rocker 5 or, in variants, on another appropriate part of the clutch system of the chronograph mechanism.
  • the friction spring 10 can be mounted on or integrated with the intermediate lever 5.
  • the friction spring 10 is in the rest state in contact against the axis 1.1 of the field wheel 1 and it is the stop 11 carried by the intermediate rocker 5 which displaces the friction spring 10 at the moment of the switching on the chronograph to separate said spring 11 from the axis 1.1 of the field wheel 1.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Description

La présente invention se rapporte à un mouvement d'horlogerie ainsi qu'à une pièce d'horlogerie comprenant un mécanisme de chronographe.The present invention relates to a watch movement and to a timepiece comprising a chronograph mechanism.

Les mouvements et pièces d'horlogerie mécanique comprenant un mécanisme de chronographe existants présentent des inconvénients tels que variation de la marche du mouvement, variations d'amplitude de l'organe réglant, entre les différents états de fonctionnement notamment marche ou arrêt du chronographe. Ces variations de la marche du mouvement ou de l'isochronisme de l'organe réglant proviennent pour partie au moins du fait que l'énergie consommée n'est pas la même suivant la fonction, marche ou arrêt notamment, enclenchée. CH242662 divulgue un mouvement d'horlogerie mécanique selon le préambule de la revendication 1.Movements and mechanical timepieces comprising an existing chronograph mechanism have drawbacks such as variation in the movement of the movement, amplitude variations of the regulating member, between the different operating states, particularly on or off the chronograph. These variations in the course of the movement or the isochronism of the regulating organ come at least partly from the fact that the energy consumed is not the same depending on the function, on or off in particular, engaged. CH242662 discloses a mechanical clockwork according to the preamble of claim 1.

L'un des buts de la présente invention est d'homogénéiser la consommation d'énergie quelle que soit la fonction ou les fonctions enclenchées et de stabiliser les variations d'amplitude de l'organe réglant entre les différents états de fonctionnement du mouvement.One of the aims of the present invention is to homogenize the energy consumption regardless of the function or the functions engaged and to stabilize the amplitude variations of the regulating member between the different operating states of the movement.

La présente invention a pour objet un mouvement d'horlogerie comportant un mécanisme de chronographe obviant aux inconvénients précités qui se distingue par les caractéristiques énoncées à la revendication 1.The present invention relates to a watch movement comprising a chronograph mechanism obviating the aforementioned drawbacks which is distinguished by the features set forth in claim 1.

L'invention a également pour objet une pièce d'horlogerie comportant un mouvement tel qu'énuméré à la revendication 1.The invention also relates to a timepiece comprising a movement as enumerated in claim 1.

Le dessin annexé illustre schématiquement et partiellement, à titre d'exemple, deux formes d'exécution du mouvement d'horlogerie selon l'invention.

  • La figure 1 est une vue partielle d'un mouvement vu de dessous, côté ponts, selon une première forme d'exécution de l'invention, le mécanisme de chronographe étant à l'arrêt.
  • La figure 2 est une vue similaire à la figure 1, le mécanisme chronographe étant en marche.
  • La figure 3 illustre en plan un détail de la figure 1.
  • La figure 4 illustre en plan un détail de la figure 2.
  • Les figures 5 à 8 sont des figures semblables aux figures 1 à 4 mais pour une seconde forme d'exécution de l'invention.
The attached drawing illustrates schematically and partially, by way of example, two embodiments of the watch movement according to the invention.
  • The figure 1 is a partial view of a movement seen from below, bridges side, according to a first embodiment of the invention, the chronograph mechanism being stopped.
  • The figure 2 is a view similar to the figure 1 , the chronograph mechanism being in operation.
  • The figure 3 illustrates in plan a detail of the figure 1 .
  • The figure 4 illustrates in plan a detail of the figure 2 .
  • The Figures 5 to 8 are figures similar to Figures 1 to 4 but for a second embodiment of the invention.

La présente invention a pour objet un mouvement d'horlogerie et une pièce d'horlogerie mécanique comportant un mécanisme de chronographe. Le mouvement comporte à l'instar des mouvements existants de ce type un barillet ou organe moteur, un rouage moteur reliant le barillet à une roue entraîneuse, dite roue de champ 1, pivotée sur une partie fixe du mouvement et une roue de chronographe 2, également pivotée sur une partie fixe du mouvement, dont l'axe 3 est solidaire d'un coeur 4. Ce mouvement comporte encore une bascule intermédiaire ou bascule d'embrayage 5 pivotée sur une partie fixe du mouvement en A par une première extrémité et dont la seconde extrémité, libre, 5.1 coopère de façon classique avec une roue à colonne 6 également pivotée sur une partie fixe du mouvement.The present invention relates to a watch movement and a mechanical timepiece comprising a chronograph mechanism. Like the existing movements of this type, the movement comprises a barrel or motor member, a power train connecting the barrel to a driving wheel, called a field wheel 1, pivoted on a fixed part of the movement and a chronograph wheel 2, also pivoted on a fixed part of the movement, the axis 3 is integral with a core 4. This movement further comprises an intermediate rocker or clutch rocker 5 pivoted on a fixed part of the movement in A by a first end and the second end, free, 5.1 cooperates in a conventional manner with a column wheel 6 also rotated on a fixed part of the movement.

La bascule intermédiaire 5 porte une roue intermédiaire 7 pivotée librement sur cette bascule intermédiaire et engrenant en permanence avec la roue de champ 1.The intermediate lever 5 carries an intermediate wheel 7 pivoted freely on this intermediate lever and meshes permanently with the field wheel 1.

De façon classique, une grande bascule 8 soumise à l'action d'un poussoir de commande 9 accessible de l'extérieur de la pièce d'horlogerie entraîne, pour chaque pression sur le poussoir de commande 9 pas à pas, la roue à colonne 6 grâce à son cliquet 8.1.Conventionally, a large rocker 8 subjected to the action of a control pushbutton 9 accessible from outside the timepiece causes, for each pressure on the control pushbutton 9 step by step, the column wheel 6 thanks to its ratchet 8.1.

Toujours de façon classique lorsque la seconde extrémité libre 5.1 de la bascule intermédiaire 5 s'appuie sur une colonne de la roue à colonne 6, la roue intermédiaire 7 n'engrène pas avec la roue de chronographe 2 et le chronographe est à l'arrêt (voir figure 1).Still conventionally when the second free end 5.1 of the intermediate lever 5 rests on a column of the column wheel 6, the intermediate wheel 7 does not mesh with the chronograph wheel 2 and the chronograph is stopped (see figure 1 ).

Par contre, lorsque la seconde extrémité libre 5.1 de la bascule intermédiaire 5 tombe entre deux colonnes de la roue à colonne 6, la bascule intermédiaire 5 bascule sous l'action de son ressort de rappel 5.2 et la roue intermédiaire 7 vient s'engrener avec la roue de chronographe 2, le mécanisme de chronographe est en marche (voir figure 2).On the other hand, when the second free end 5.1 of the intermediate lever 5 falls between two columns of the column wheel 6, the intermediate lever 5 switches under the action of its return spring 5.2 and the wheel intermediate 7 comes to mesh with the chronograph wheel 2, the chronograph mechanism is running (see figure 2 ).

La nouveauté et l'originalité du présent mouvement d'horlogerie réside dans l'adjonction d'un ressort de friction 10 fixé sur une partie fixe du mouvement, généralement la platine P de celui-ci, passant à proximité de l'axe 1.1 de la roue de champ 1 et s'étendant au-delà de cet axe jusqu'à se superposer à la bascule intermédiaire 5. En position de marche du chronographe (figure 2) ce ressort de friction est libre c'est-à-dire qu'il passe à côté de l'axe 1.1. de la roue de champ 1 et que son extrémité libre n'est en contact avec rien.The novelty and originality of the present watchmaking movement lies in the addition of a friction spring 10 fixed on a fixed part of the movement, generally the plate P thereof, passing close to the axis 1.1 of the field wheel 1 and extending beyond this axis until it is superimposed on the intermediate lever 5. In the chronograph running position ( figure 2 ) this friction spring is free, that is to say it passes next to the axis 1.1. of the field wheel 1 and that its free end is in contact with nothing.

Comme on le voit sur le dessin, cette extrémité libre du ressort de friction est apte à entrer en contact avec une butée excentrique réglable 11 portée par la bascule intermédiaire 5.As can be seen in the drawing, this free end of the friction spring is able to come into contact with an adjustable eccentric abutment 11 carried by the intermediate lever 5.

Lorsque le chronographe est mis à l'arrêt (figure 1) le déplacement de la bascule intermédiaire provoque l'entrée en contact de la butée excentrique réglable 11 avec l'extrémité libre du ressort de friction 10 déplaçant la lame de ce ressort à friction contre l'axe 1.1 de la roue de champ 1. La force d'appui du ressort de friction 10 contre l'axe 1.1. de la roue de champ 1 est ajustée par la position de la butée excentrique réglable 11 pour que l'énergie consommée par cette friction du ressort 10 sur l'axe 1.1. de la roue de champ 1 corresponde sensiblement à l'énergie consommée par l'entraînement de la roue de chronographe 2 lorsque le chronographe est en marche.When the chronograph is stopped ( figure 1 the displacement of the intermediate lever causes the adjustable eccentric abutment 11 to come into contact with the free end of the friction spring 10 displacing the blade of this friction spring against the axis 1.1 of the field wheel 1. bearing force of the friction spring 10 against the axis 1.1. of the field wheel 1 is adjusted by the position of the adjustable eccentric abutment 11 so that the energy consumed by this friction of the spring 10 on the axis 1.1. of the field wheel 1 corresponds substantially to the energy consumed by the driving of the chronograph wheel 2 when the chronograph is running.

Dans une variante, la butée 11 peut être fixe sur la bascule intermédiaire 5 et formée par une goupille ou un usinage de celle-ci.In a variant, the abutment 11 can be fixed on the intermediate lever 5 and formed by a pin or a machining thereof.

De cette manière, on remplace l'énergie consommée par la marche du chronographe par une friction sur l'axe de la roue de champ 1 lorsque le chronographe est à l'arrêt. Ainsi, la consommation d'énergie est toujours sensiblement la même que le chronographe soit en marche ou à l'arrêt. Ceci étant, on a supprimé la cause des variations de marche et d'isochronisme ou d'amplitude du balancier et la marche du mouvement devient indépendante de l'état de marche ou d'arrêt du chronographe.In this way, the energy consumed by the chronograph operation is replaced by friction on the axis of the field wheel 1 when the chronograph is stopped. Thus, the energy consumption is still substantially the same whether the chronograph is on or off. This being the case, the cause of the variations of gait and isochronism or amplitude has been removed. the pendulum and the movement of the movement becomes independent of the state of operation or stopping of the chronograph.

Le principe de la présente invention qui permet de minimiser voir d'annuler les variations d'amplitude d'un mouvement d'horlogerie mécanique comportant un mécanisme de chronographe consiste donc à ajouter un ressort de friction sur la roue de champ qui consomme de l'énergie lorsque le chronographe est déclenché, à l'arrêt. Le frottement du ressort de friction ne consomme aucune énergie lorsque le chronographe est en marche. La bascule intermédiaire ou d'embrayage de chronographe fait office de commande du ressort de friction et porte un excentrique qui permet le réglage de la tension du ressort et donc de l'énergie consommée par la friction de ce ressort sur l'axe de la roue de champ. On ajuste la tension du ressort à l'aide de l'excentrique de manière à ce que la consommation d'énergie du ressort de friction, lorsque le chronographe est à l'arrêt, soit équivalente à l'énergie que le chronographe consomme lorsqu'il est enclenché.The principle of the present invention which makes it possible to minimize or even cancel the amplitude variations of a mechanical clockwork movement comprising a chronograph mechanism therefore consists in adding a friction spring to the field wheel which consumes the energy when the chronograph is triggered, when stopped. The friction of the friction spring consumes no energy when the chronograph is running. The intermediate lever or chronograph clutch serves as control of the friction spring and carries an eccentric that allows the adjustment of the spring tension and therefore of the energy consumed by the friction of this spring on the axis of the wheel of field. The tension of the spring is adjusted by means of the eccentric so that the energy consumption of the friction spring, when the chronograph is at a standstill, is equivalent to the energy that the chronograph consumes when he is engaged.

On a ainsi réalisé l'homogénéisation de la consommation d'énergie selon l'état d'enclenchement ou non des fonctions chronographe et rattrapante si le mécanisme de chronographe comporte une rattrapante avec isolation.It has thus been realized that the energy consumption is homogenized according to the state of engagement or not of the chronograph and catch-up functions if the chronograph mechanism comprises an override with insulation.

Dans des variantes la roue à colonne 6 peut être remplacée par une came de façon connue. La roue à colonne 6 ou la came forme donc un organe de commande de la bascule intermédiaire 5.In variants, the column wheel 6 can be replaced by a cam in a known manner. The column wheel 6 or the cam thus forms a control member of the intermediate lever 5.

Dans toutes les réalisations possibles l'extrémité libre du ressort de friction 10 est située sur le chemin d'une butée 11, réglable ou non, et sa portion médiane est apte à être appliquée contre l'axe 1.1. de la roue de champ 1. La butée est portée par la bascule intermédiaire 5 ou, dans des variantes, sur une autre partie appropriée du système d'embrayage du mécanisme de chronographe.In all possible embodiments the free end of the friction spring 10 is located in the path of a stop 11, adjustable or not, and its middle portion is adapted to be applied against the axis 1.1. of the field wheel 1. The stop is carried by the intermediate rocker 5 or, in variants, on another appropriate part of the clutch system of the chronograph mechanism.

Dans une variante le ressort de friction 10 peut être monté sur ou intégré à la bascule intermédiaire 5.In a variant, the friction spring 10 can be mounted on or integrated with the intermediate lever 5.

Le principe d'ajout d'un ressort consommateur d'énergie pour homogénéiser la consommation d'énergie quelles que soient les fonctions enclenchées peut être également appliqué à un chronographe à embrayage vertical.The principle of adding a power-consuming spring to homogenize energy consumption regardless of the functions engaged can also be applied to a chronograph with vertical clutch.

Dans une second forme d'exécution (figures 5 à 8) le ressort de friction 10 est à l'état de repos en contact contre l'axe 1.1 de la roue de champ 1 et c'est la butée 11 portée par la bascule intermédiaire 5 qui déplace ce ressort de friction 10 au moment de la mise en marche du chronographe pour séparer ledit ressort 11 de l'axe 1.1 de la roue de champ 1.In a second embodiment ( Figures 5 to 8 ) the friction spring 10 is in the rest state in contact against the axis 1.1 of the field wheel 1 and it is the stop 11 carried by the intermediate rocker 5 which displaces the friction spring 10 at the moment of the switching on the chronograph to separate said spring 11 from the axis 1.1 of the field wheel 1.

Claims (14)

  1. A mechanical horological movement comprising a chronograph mechanism including a driving wheel (1) connected by a gear train to a motor organ of the movement and driven in rotation independently of the running or stopped state of the chronograph mechanism and a chronograph wheel (2) adapted, in the running position of the chronograph mechanism, to be driven by the driving wheel (1), the chronograph wheel (2) not being driven by the driving wheel (1) when the chronograph mechanism is stopped, characterised in that it comprises a friction spring (10) arranged to rub on the driving wheel (1) when the chronograph mechanism is stopped.
  2. The movement according to claim 1, characterised in that the friction spring (10) is controlled by a coupling system (5) of the chronograph mechanism.
  3. The movement according to claim 2, characterised in that the friction spring (10) has a free end located in the path of a abutment (11) carried by the coupling system (5) of the chronograph mechanism, the middle part of the friction spring (10) being adapted to be applied against the driving wheel (1).
  4. The movement according to claim 3, characterised in that the abutment (11) is adjustable.
  5. The movement according to one of claims 2 to 4, characterised in that the coupling system of the chronograph mechanism comprises an intermediate lever or a coupling lever (5).
  6. The movement according to claim 5, characterised in that the friction spring (10) is attached to or integrated with the intermediate lever or with the coupling lever (5).
  7. The movement according to claim 6, characterised in that the abutment (11) is carried by the intermediate lever or the coupling lever (5) and is an adjustable eccentric element allowing adjustment of the tension of the friction spring (10).
  8. The movement according to one of the preceding claims 1 to 5, characterised in that the friction spring (10) is attached to a fixed part of the movement.
  9. The movement according to one of the preceding claims, characterised in that the friction spring (10) is arranged so that in the stop position of the chronograph, said friction spring (10) is pushed against the driving wheel (1) by the abutment (11) of the coupling system (5) of the chronograph mechanism or by its own elasticity.
  10. The movement according to one of the preceding claims, characterised in that it is arranged so that, when the chronograph mechanism is stopped, the energy consumed by the friction of the driving wheel (1) against the friction spring (10) is substantially equal to the energy consumed by the chronograph wheel (2) when the chronograph mechanism is running.
  11. The movement according to one of the preceding claims, characterised in that it is arranged so that its energy consumption is substantially the same regardless whether the chronograph mechanism is running or stopped.
  12. The movement according to one of the preceding claims, characterised in that the friction spring (10) is arranged so that in the running position of the chronograph mechanism, said friction spring (10) is not in contact with the driving wheel (1).
  13. The mechanism according to one of the preceding claims, characterised in that the friction spring (10) is arranged to rub on the axis (1.1) of the driving wheel (1) when the chronograph mechanism is stopped.
  14. A timepiece comprising a mechanical horological movement according to one of the preceding claims.
EP15151310.8A 2014-01-16 2015-01-15 Movement and mechanical timepiece including a chronograph mechanism Active EP2897003B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00054/14A CH709154A1 (en) 2014-01-16 2014-01-16 Movement and mechanical timepiece including a chronograph mechanism.

Publications (3)

Publication Number Publication Date
EP2897003A2 EP2897003A2 (en) 2015-07-22
EP2897003A3 EP2897003A3 (en) 2016-04-06
EP2897003B1 true EP2897003B1 (en) 2018-11-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15151310.8A Active EP2897003B1 (en) 2014-01-16 2015-01-15 Movement and mechanical timepiece including a chronograph mechanism

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EP (1) EP2897003B1 (en)
CH (1) CH709154A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3324249A1 (en) * 2016-11-17 2018-05-23 Nogerah SA Clutch system for chronograph
EP3327518B1 (en) 2016-11-29 2020-03-18 Montres Breguet S.A. Timepiece comprising a switching device of a clockwork mechanism
CH715923B1 (en) * 2019-03-14 2022-03-15 Lvmh Swiss Mft Sa C/O Zenith Succursale De Lvmh Swiss Mft Sa Lateral clutch device for chronograph with two transmissions and chronograph watch movement comprising such a device.
NL2023822B1 (en) * 2019-09-12 2021-05-17 Flexous Mech Ip B V Chronograph watch
NL2023823B1 (en) * 2019-09-12 2021-05-17 Flexous Mech Ip B V Watch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB310987A (en) * 1928-01-06 1929-05-06 Charles Vernon Boys Improvements in means for equalizing the drive in clocks and clock-governed mechanism
CH242662A (en) * 1944-07-18 1946-05-31 Girard Erwin Chronograph.
CH580301B5 (en) * 1973-07-10 1976-09-30 Suisse Horlogerie
EP1498788A1 (en) * 2003-07-14 2005-01-19 Eterna SA Display device for timepiece

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP2897003A2 (en) 2015-07-22
EP2897003A3 (en) 2016-04-06
CH709154A1 (en) 2015-07-31

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