EP3582029B1 - Rattrapanten-mechanismus und chronograph, der einen solchen mechanismus umfasst - Google Patents

Rattrapanten-mechanismus und chronograph, der einen solchen mechanismus umfasst Download PDF

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Publication number
EP3582029B1
EP3582029B1 EP18177764.0A EP18177764A EP3582029B1 EP 3582029 B1 EP3582029 B1 EP 3582029B1 EP 18177764 A EP18177764 A EP 18177764A EP 3582029 B1 EP3582029 B1 EP 3582029B1
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EP
European Patent Office
Prior art keywords
transverse arm
split
fly
back hand
wheel
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EP18177764.0A
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English (en)
French (fr)
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EP3582029A1 (de
Inventor
Didier VUILLEMIN
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Priority to EP18177764.0A priority Critical patent/EP3582029B1/de
Publication of EP3582029A1 publication Critical patent/EP3582029A1/de
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    • 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
    • G04F7/0866—Special arrangements
    • G04F7/0876—Split-time function, e.g. rattrappante

Definitions

  • the present invention relates to a split-seconds mechanism for a chronograph comprising a control device comprising a manually operated mechanism accessible from outside the chronograph and at least one movable part arranged to selectively occupy two predefined configurations and to switch alternately from one to the other. the other of the two predefined configurations when the control device is switched using the manual control mechanism, and comprising a split-seconds clamp actuated by said at least one movable part and the two branches of which are arranged to cooperate with a wheel split-seconds wheel coaxial with a chronograph wheel, so as to alternately allow the split-seconds wheel to be released and immobilized by switching the control device so as to alternately open and close the split-seconds clamp.
  • the present invention also relates to a chronograph equipped with such a split-seconds mechanism.
  • FIG. 1 Annexed is taken from http // www.horlogerie-suisse.com. It illustrates a split-second mechanism of the prior art.
  • This mechanism comprises a control device comprising a column wheel A formed by a ratchet with sixteen teeth surmounted by eight columns (not referenced), a jumper D, a rocker C intended to be actuated from outside a chronograph, and a hook B articulated on one end of the rocker C.
  • the hook B is biased by a spring (not shown) against the ratchet of the column wheel.
  • the column wheel A can be actuated in rotation by a pusher via the rocker C and the hook D which cooperates with the ratchet.
  • the column wheel thus advances step by step in the clockwise direction, and the jumper D ensures that the angular value of each step corresponds to that of a tooth of the ratchet.
  • the rattrapante mechanism of the figure 1 also includes a split-seconds wheel G designed to be mounted loose coaxially with the chronograph wheel, a lever J pivoted on the rim of the split-seconds wheel, a lever spring K fixed by one of its ends to the rim of the split-seconds, and a heart (not visible) mounted fixed on the chronograph wheel in coaxial position.
  • the lever J is arranged so as to be biased by the spring K against the heart.
  • the split-second mechanism illustrated comprises a split-second clip which comprises two rockers E and F and a double spring H. With further reference to the figure 1 , it can be seen that the two rockers are arranged symmetrically and are each formed of a first and a second arm.
  • the first arms both end in a spout arranged to cooperate with the columns of the column wheel A, while the second arms constitute the two branches of the split-seconds clamp.
  • the two elastic leaves of the double spring H are arranged so as to recall the two branches, one in the direction of the other, so as to tend to close the clamp around the split-seconds wheel G.
  • the column wheel As the column wheel has eight columns, it must advance twice the angular value of one tooth of the ratchet for a column to take the place of the previous one. It will therefore be understood that, when the column wheel advances step by step, the slats of the two rockers E and F are alternately lifted by a column, then released in the space between this column and the next, so that the advance of the column wheel A causes a succession of openings and closings of the split-seconds clamp, so as to alternately release and immobilize the split-seconds wheel. To immobilize the split-seconds wheel G with precision, it is important that the two branches of the clamp come into contact with the wheel at the same time.
  • the document EP 0 490 285 A1 describes a split-second mechanism which corresponds to the definition given in the preamble and of which the clamp, which comprises two branches and an elastic connection portion, is in one piece.
  • the split-seconds clamp can assume a first configuration, called closed, in which the elastic connection portion which connects the two branches is rectilinear so that the fly-back wheel is immobilized, and a so-called open configuration, in which the connecting portion is curved so that the rattrapante wheel is free to turn.
  • the moving part is arranged to alternately deform and move away from the connecting portion when the control device is actuated repeatedly.
  • a drawback of this known mechanism is that the split-seconds clamp must be fixed to the plate with play, which limits its precision.
  • An aim of the present invention is to remedy the drawbacks of the prior art which have just been explained.
  • the present invention achieves this and other object by providing a split-seconds mechanism according to claim 1 appended hereto.
  • the split-seconds clamp comes in a single piece which comprises the following parts: two branches and an elastic transverse arm deformable in bending which connects the two branches to one another and which is provided with its ends of two pivot members arranged to rotate about two parallel axes.
  • an elastic transverse arm deformable in bending which connects the two branches to one another and which is provided with its ends of two pivot members arranged to rotate about two parallel axes.
  • the elastic transverse arm extends between the two pivot members.
  • the distance which separates the two pivot members is less than the non-deformed length of the elastic transverse arm.
  • the elastic transverse arm is subjected to stresses which make its undeformed configuration unstable.
  • the elastic transverse arm adopts a buckled shape (or in other words, bent by deformation in a direction perpendicular to the plane containing the two parallel axes around which the two pivot members are arranged to rotate).
  • the expression “stable configuration” is understood to mean a configuration which is associated with a shape towards which the elastic transverse arm always returns if it is moved away from it by a stress of sufficiently low amplitude.
  • the movable part is arranged to cooperate with the elastic transverse arm so that, when the control device is switched, the passage of the movable part from one of its two configurations to the other or preset positions changes the curvature of the elastic transverse arm, so as to alternately open and close the split-seconds clamp.
  • the curvature due to buckling can constitute a deformation in one direction or the other of the transverse arm, so that the elastic transverse arm, and by extension the split-seconds clamp as a whole, has two stable configurations towards which they tend to return. when they are removed by a stress of sufficiently low amplitude.
  • the split-seconds mechanism comprises a split-seconds wheel designed to be arranged coaxially with the chronograph wheel of the chronograph.
  • the two branches of the split-second clip are arranged to cooperate with the split-second wheel so that the flywheel split-seconds is immobilized or free to rotate depending on whether the split-seconds clamp is closed or open respectively.
  • the figures 2A and 2B are schematic plan views of a split-second mechanism according to a first particular embodiment of the invention.
  • the split-seconds mechanism shown is intended to equip a chronograph mechanism which may be of conventional design.
  • a chronograph mechanism comprises in particular a chronograph wheel and a chronograph hand connected by a chronograph axis.
  • the axis of the chronograph wheel still carries a heart which is part of the split-seconds mechanism.
  • the split-seconds heart, nor the chronograph components which have just been listed will be described in more detail. Those skilled in the art will however understand that these elements, which do not appear in the figures either, can be produced in a traditional manner.
  • the split-second mechanism illustrated comprises a split-seconds wheel 3 which is designed to be mounted loose coaxially with the chronograph wheel and whose axis (not shown) is designed to be arranged concentrically with the chronograph axis and to wear in a conventional manner a split-seconds needle (not shown).
  • the split-second mechanism illustrated further comprises a split-seconds column wheel 5 and a control lever 7.
  • the control lever 7 is pivoted about an axis 9 and it comprises a spout 11 which is biased against the columns of the wheel. split-seconds columns by a spring 13.
  • the spring 13 is integral with the control lever 7.
  • the split-seconds column wheel 5 is itself controlled using a manually operated mechanism (not shown) accessible from outside the chronograph watch. the manually operated mechanism can, in the traditional way, be operated using a push-button.
  • the split-second mechanism illustrated further comprises a split-second clip 19 made from a single bent piece.
  • this bent part is formed of two branches 21a and 21b arranged to pass on either side of the split-seconds wheel 3, of an elastic transverse arm 23 which connects the two branches to one another, and two pivot members 25a and 25b each formed at the junction between one of the two branches 21a, 21b and the corresponding end of the elastic transverse arm 23.
  • the two pivot members 25a, 25b are free to rotate around two parallel axes (not shown) which are oriented perpendicular to the plane of the drawing.
  • the split-seconds clamp 19 is arranged to be controlled by the split-seconds column wheel 5 via the control lever 7.
  • control lever 7 also comprises a control arm 15 which ends with a head which, in the example illustrated, carries two parallel pins 17a and 17b which are oriented perpendicular to the plane of the drawing.
  • a control arm 15 which ends with a head which, in the example illustrated, carries two parallel pins 17a and 17b which are oriented perpendicular to the plane of the drawing.
  • the distance which separates the two parallel axes around which the two pivot members 25a and 25b rotate is less than the undeformed length of the elastic transverse arm 23.
  • the elastic transverse arm is subjected to stresses which make its undeformed configuration unstable.
  • the elastic transverse arm 23 adopts a buckled shape (or in other words, bent by deformation in a direction parallel to the plane of the drawing).
  • stable configuration is understood to mean a configuration which is associated with a shape towards which the elastic transverse arm always returns if it is moved away from it by a stress of sufficiently low amplitude.
  • the elastic transverse arm 23 has been shown in the two figures, giving it a convex shape towards the left of the drawing.
  • the elastic transverse arm is curved, and the concavity of this curve is to the right in the drawing, that is to say open towards the split-seconds wheel.
  • the concavity of the elastic transverse arm is more marked in the figure 2B that in the figure 2A .
  • the configuration illustrated in figure 2B corresponds to the stable configuration of the split-seconds clamp 19 and more generally of the entire split-seconds mechanism of the present embodiment.
  • the figure 2A illustrates a split-second clamp configuration that is unstable. In other words, the elastic transverse arm 23 cannot remain in the position illustrated by figure 2A that as long as the pin 17a of the control arm 15 retains it, preventing it from fully buckling.
  • the transverse arm 23 of the clamp 19 is elastic, or more precisely, the elasticity of the branches 21a, 21b and of the pivot members 25a, 25b of the split-seconds clamp can be considered negligible in comparison with that of the transverse arm.
  • the angle which each of the branches 21a, 21b of the clamp 19 makes with the elastic transverse arm 23, at the level of the pivoting member 25a or 25b which connects them does not change when the elastic transverse arm is deformed.
  • the more the shape of the elastic transverse arm 23 is curved towards the left (in the drawing), the more the branches of the split-seconds clamp 19 are brought together.
  • the presence of the buckled elastic transverse arm therefore offers the possibility of making the two branches 21a, 21b move apart and closer together by varying the curvature of the elastic transverse arm 23.
  • the split-second mechanism comprises a control device comprising a manually operated mechanism accessible from outside the chronograph case and at least one moving part arranged to selectively occupy two predefined configurations and to switch alternately from one to the other of the two predefined configurations when the control device is switched using of the manually operated mechanism.
  • the manually operated mechanism is preferably constituted by a push-button mechanism (not shown) arranged to rotate the column wheel 5 step by step in the clockwise direction, and the control rocker 7 fulfills the purpose.
  • movable part function arranged to selectively occupy two predefined configurations or positions.
  • the control rocker 7 is in fact arranged to switch alternately in one direction and the other between two predefined angular positions when the column wheel 5 is incremented step by step.
  • the elastic transverse arm 23 is guided between the two pins 17a, 17b of the rocker 7, it is forced to accompany the movements of the control arm 15 of the control rocker 7 by bending, so that its curvature varied.
  • the spout 11 of the control lever 7 is found between two columns of the column wheel.
  • the spout 11 is then free to lower into the space between the columns under the action in particular of the return spring 13, so that the control lever 7 pivots clockwise.
  • the pivoting of the control lever 7 in the clockwise direction has the effect of returning the pins 17a, 17b to their starting point. In doing so, the pin 17a stops retaining the elastic transverse arm which is thus free to return to its equilibrium configuration by deforming to the left (in the drawing).
  • the elastic transverse arm 23 thus resumes its more strongly curved shape towards the left (in the drawing), so that the branches 21a, 21b of the split-seconds clamp 19 close on the split-seconds wheel 3.
  • the split-seconds clamp is capable of spontaneously returning to the configuration of the figure 2A to that of figure 2B . Under these conditions, when the transverse arm 23 is deformed, it pushes back the pin 17a and therefore the lever 7 in the direction of the column wheel.
  • the figures 3A and 3B are schematic plan views of a split-second mechanism according to a second exemplary embodiment of the invention. As these figures show, the illustrated split-second mechanism has many characteristics in common with the split-second mechanism of figures 2A and 2B . This is the reason why the following description will be limited to describing the characteristics of the second embodiment which have not already been described in relation to the first embodiment. It should also be noted that the elements of the split-seconds mechanism illustrated in the figures 3A and 3B , which are identical or equivalent to parts of the split-second mechanism illustrated in the figures 2A and 2B , are designated by the same reference numbers added to one hundred.
  • the elastic transverse arm 123 has been shown by giving it a convex shape to the right in the figure 3A and curved to the left in the figure 3B . It will be understood that the embodiment of figures 3A and 3B takes advantage of the resilient transverse arm's ability to adopt either a buckled shape in one direction or the other (or in other words, a shape curved by deformation in one direction or the other parallel to the plane of the drawing) . Indeed, the elastic transverse arm 123, associated with the two pivot members 125a, 125b which hold its ends, constitutes a bistable device, or in other words, a device which can adopt one or the other of two stable configurations.
  • the elastic transverse arm 123 is guided between two pins 117a, 117b of the control arm 115 of the rocker 107.
  • the elastic transverse arm is therefore forced to accompany the movements of the lever.
  • control arm 115 by deforming in a direction which is perpendicular to a plane containing the two parallel pivot axes.
  • the elastic cross arm 123 has two stable configurations; a first configuration in which the transverse arm 123 is buckled to the left ( Figure 3B ) and a second configuration in which the transverse arm 123 is buckled to the right ( Figure 3A ).
  • first configuration in which the transverse arm 123 is buckled to the left ( Figure 3B )
  • second configuration in which the transverse arm 123 is buckled to the right ( Figure 3A ).
  • the control lever 115 pivots from one of its two predefined configurations to the other, the amplitude of the movement of the control arm 115 and the two pins 117a, 117b is sufficient to completely tilt the resilient cross arm from its first to its second stable configuration.
  • the transverse arm 123 deforms so as to deviate from the first stable configuration and to approach the second.
  • the transverse arm being elastic, its deformation also generates a reaction force which, initially, opposes the deformation of the transverse arm and therefore tends to return it to the first stable configuration.
  • the pin 117a moves the cross arm 123 past a point which is just as close to the second stable configuration as to the first, the direction of the reaction force is reversed, so that 'From this point of reversal, the reaction force no longer opposes the pin 117a, but instead drives the resilient transverse arm 123 towards the second stable configuration.
  • the beak 111 of the control lever 107 is found between two columns of the column wheel. Under the action of the return spring 113, the spout 111 then lowers into the space between the columns, so that the control lever 107 pivots clockwise.
  • the pivoting of the control lever 107 in the clockwise direction has the effect of returning the pins 117a, 117b in the direction of their starting point. In doing so, the pin 117b abuts against the elastic transverse arm 123 which it forces to deform so as to deviate from the second stable configuration.
  • the deformation of the transverse arm 123 generates a reaction force which, initially, opposes the deformation of the arm and therefore tends to recall the latter in the second configuration. stable.
  • the spring 113 in order to rotate the lever 107 in the clockwise direction, the spring 113 must be strong enough to overcome the reaction force which, initially, tends to return the elastic transverse arm to its second stable configuration.
  • the pin 117b causes the resilient transverse arm 123 to tilt from its second to its first stable configuration. The latter therefore resumes the configuration of the figure 3B .
  • This passage of the elastic transverse arm 123 from a configuration buckled to the right to a configuration buckled to the left also has the effect of closing the branches 121a, 121b of the flyback clamp 119 on the flyback wheel 103.
  • the figures 4A and 4B are schematic plan views of a split-second mechanism according to a third exemplary embodiment of the invention. As these figures show, the split-second mechanism illustrated has many characteristics in common with the two split-second mechanisms already described. This is the reason why the The following description will be limited to describing those of the characteristics of the third embodiment which distinguish it from the first two embodiments. It should also be noted that the elements of the split-seconds mechanism illustrated in the figures 4A and 4B , which are identical or equivalent to parts of the split-second mechanism illustrated in the figures 2A and 2B , are designated by the same reference numbers added to two hundred.
  • the split-second mechanism illustrated differs from the two preceding examples in particular by the fact that it does not include a control lever, and that the column wheel 205 is arranged to directly control the split-seconds clamp 219.
  • the split-second mechanism comprises a control device comprising a manual mechanism accessible from outside the chronograph case and at least one movable part arranged to be selectively in two predefined configurations and to pass alternately from there. 'one to the other of the two predefined configurations when the controller is switched using the manually operated mechanism.
  • the column wheel 205 is formed by an eight-tooth ratchet surmounted by four columns together forming a cross-shaped cam (referenced 207) which has a rotational symmetry of order 4.
  • the column wheel 205 is rotated by the angular value of a tooth of the ratchet (in the example illustrated, this pivoting appears to be accomplished in the clockwise direction when the wheel at columns and top view).
  • This one-eighth turn rotation performed by the column wheel 205 has the effect of changing the angular position of the cross cam 207 so as to change the cross cam from a first configuration to a second configuration.
  • the column wheel 205 is a two-stroke column wheel. Under these conditions, if the manually operated mechanism is actuated a second time, this new rotation of the column wheel, in the same direction as the previous one, has the effect of resetting the cross cam 207 from its second configuration to its first setup.
  • the first configuration is the configuration shown in the figure 4A . In the first configuration, the end of one of the branches is turned towards the flexible transverse arm 223 of the flyback clamp 219, so that it presses against the flexible transverse arm.
  • the second configuration is shown in the figure 4B . In the second configuration, no branch of the cross is turned towards the flexible transverse arm 223.

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

Claims (9)

  1. Rattrapanten-Mechanismus für Chronograph, der eine Schaltvorrichtung (5, 7; 105, 107; 205, 207), die einen manuellen Schaltmechanismus, der von außerhalb des Gehäuses des Chronographen zugänglich ist, und mindestens ein bewegliches Teil (7; 107; 207) umfasst, das so gestaltet ist, dass es sich selektiv in zwei vordefinierten Ausgestaltungen befindet und abwechselnd von der einen der zwei vordefinierten Ausgestaltungen in die andere übergeht, wenn die Schaltvorrichtung (5, 7; 105, 107; 205, 207) mittels des manuellen Schaltmechanismus geschaltet wird, und eine Rattrapanten-Zange (19; 119; 219) umfasst, die so gestaltet ist, dass sie durch das bewegliche Teil (7; 107; 207) betätigt wird, und deren zwei Schenkel (21a, 21b; 121a, 121b; 221a, 221b) so gestaltet sind, dass sie mit einem Rattrapanten-Rad (3; 103; 203) zusammenwirken, das koaxial zu einem Chronographen-Rad ist, derart, dass abwechselnd das Befreien und Anhalten des Rattrapanten-Rades (3; 103; 203) durch Schalten der Schaltvorrichtung (5, 7; 105, 107; 205, 207) ermöglicht wird, derart, dass abwechselnd das Öffnen und Schließen der Rattrapanten-Zange (19; 119; 219) bewirkt wird, wobei die Rattrapanten-Zange (19; 119; 219) aus einem einzigen Teil gebildet ist, das zwei Schenkel (21a, 21b; 121a, 121b; 221a, 221b) und einen elastischen Querarm (23; 123; 223) umfasst, der biegsam verformbar ist, wobei der elastische Querarm die zwei Schenkel (21a, 21b; 121a, 121b; 221a, 221b) miteinander verbindet, derart, dass das Entfernen und Annähern der zwei Schenkel ermöglicht wird, wenn der Querarm sich elastisch verformt, und das bewegliche Teil (7; 107; 207) so gestaltet ist, dass es mit dem elastischen Querarm (23; 123; 223) zusammenwirkt, derart, dass, wenn die Schaltvorrichtung (5, 7; 105, 107; 205, 207) geschaltet wird, der Übergang des beweglichen Teils (7; 107; 207) von einer seiner zwei vordefinierten Ausgestaltungen in die andere die Krümmung des elastischen Querarms (23; 123; 223) und somit die Entfernung der Schenkel der Rattrapanten-Zange (19; 119; 219) bewirkt;
    dadurch gekennzeichnet, dass die Rattrapanten-Zange (19; 119; 219) zwei Schwenkorgane (25a, 25b, 125a, 125b; 225a, 225b) umfasst, die jeweils an einem Ende des elastischen Querarms befestigt sind und sich frei um zwei parallele Achsen drehen, wobei der Abstand, der die zwei parallelen Achsen trennt, derart ist, dass der elastische Querarm (23; 123; 223) geknickt oder, mit anderen Worten, durch Verformung in eine Richtung senkrecht zur Ebene, die die zwei parallelen Achsen enthält, zwischen den zwei Schwenkorganen (25a, 25b, 125a, 125b; 225a, 225b) gekrümmt gehalten wird.
  2. Rattrapanten-Mechanismus nach Anspruch 1, dadurch gekennzeichnet, dass das bewegliche Teil (7; 107; 207) so gestaltet ist, dass es das Zurückdrängen eines medianen Teils des elastischen Querarms (23; 123; 223) in Richtung des Rattrapanten-Rades (3; 103; 203) ermöglicht.
  3. Rattrapanten-Mechanismus nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das bewegliche Teil (7; 107) so gestaltet ist, dass es das Ziehen eines medianen Teils des elastischen Querarms (3; 103) in die Richtung ermöglicht, die derjenigen des Rattrapanten-Rades (3; 103) entgegengesetzt ist.
  4. Rattrapanten-Mechanismus nach einem der Ansprüche 1, 2 und 3, dadurch gekennzeichnet, dass das bewegliche Teil (7; 207) so gestaltet ist, dass es die Änderung der Krümmung des elastischen Querarms (23; 223) bewirkt, wenn die Schaltvorrichtung (5, 7; 205, 207) geschaltet wird, ohne die Knickungsrichtung dieser letzteren zu ändern.
  5. Rattrapanten-Mechanismus nach Anspruch 4, dadurch gekennzeichnet, dass die Richtung der Knickung derart ist, dass die Konkavität in Richtung des Rattrapanten-Rades offen ist.
  6. Rattrapanten-Mechanismus nach Anspruch 2 und 3, dadurch gekennzeichnet, dass das bewegliche Teil (107) so gestaltet ist, dass es eine Umkehrung der Knickungsrichtung des elastischen Querarms (123) verursacht, wenn die Schaltvorrichtung (105, 107) geschaltet wird.
  7. Rattrapanten-Mechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schaltvorrichtung (5, 7; 105, 107) ein Säulenrad (5; 105) und einen Schalthebel (7; 107) umfasst, der ein Ende, das aus einem Schnabel (11; 111) besteht, der so gestaltet ist, dass er gegen die Säulen des Säulenrades (5; 105) zurückgezogen wird, und ein anderes Ende aufweist, das ein Kopplungselement (17a, 17b; 117a, 117b) bildet, das so gestaltet ist, dass es mit dem elastischen Querarm (23; 123) zusammenwirkt.
  8. Rattrapanten-Mechanismus nach Anspruch 1, dadurch gekennzeichnet, dass die Schaltvorrichtung (205, 207) ein Säulenrad (205) umfasst, dessen Säulen zusammen eine Rolle einer Kurvenscheibe (207) spielen, die so gestaltet ist, dass sie derart mit dem elastischen Querarm (223) zusammenwirkt, dass ein medianer Teil dieses letzteren zurückgedrängt wird.
  9. Chronograph, dadurch gekennzeichnet, dass er einen Rattrapanten-Mechanismus nach einem der vorhergehenden Ansprüche umfasst.
EP18177764.0A 2018-06-14 2018-06-14 Rattrapanten-mechanismus und chronograph, der einen solchen mechanismus umfasst Active EP3582029B1 (de)

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EP3582029B1 true EP3582029B1 (de) 2021-09-08

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WO2023248178A1 (fr) * 2022-06-23 2023-12-28 Lvmh Swiss Manufactures Sa Mécanisme de commande d'horlogerie a comportement bistable
WO2023248177A1 (fr) 2022-06-23 2023-12-28 Lvmh Swiss Manufactures Sa Mécanisme de commande d'horlogerie a comportement bistable

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CH337151A (fr) * 1958-03-13 1959-03-15 Depraz & Cie Pièce d'horlogerie à aiguille rattrapante
CH679969B5 (de) * 1990-12-11 1992-11-30 Ebauchesfabrik Eta Ag

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