EP2290476B1 - Isochronismuskorrektor für Uhrhemmungsmechanismus und mit einem solchen Korrektor ausgestatteter Hemmungsmechanismus - Google Patents

Isochronismuskorrektor für Uhrhemmungsmechanismus und mit einem solchen Korrektor ausgestatteter Hemmungsmechanismus Download PDF

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Publication number
EP2290476B1
EP2290476B1 EP09168113.0A EP09168113A EP2290476B1 EP 2290476 B1 EP2290476 B1 EP 2290476B1 EP 09168113 A EP09168113 A EP 09168113A EP 2290476 B1 EP2290476 B1 EP 2290476B1
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EP
European Patent Office
Prior art keywords
corrector
frame
blade
flexible blade
adjustment means
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EP09168113.0A
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English (en)
French (fr)
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EP2290476A1 (de
Inventor
Simon Henein
Philippe Schwab
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Centre Suisse dElectronique et Microtechnique SA CSEM
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Centre Suisse dElectronique et Microtechnique SA CSEM
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Priority to EP09168113.0A priority Critical patent/EP2290476B1/de
Priority to US12/858,606 priority patent/US8672536B2/en
Publication of EP2290476A1 publication Critical patent/EP2290476A1/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
    • G04B15/00—Escapements
    • G04B15/12—Adjusting; Restricting the amplitude of the lever or the like
    • 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
    • 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

Definitions

  • the present invention relates to a mechanical oscillator isochronism corrector comprising a frame, a flexible blade integral with the frame to act on the mechanical oscillator at a contact portion that has the blade.
  • the invention also relates to an exhaust mechanism provided with such a corrector.
  • the object of the invention is thus to provide a corrector of the isochronism defect induced by the variations of the engine torque of the mainspring, according to a principle of correction as a function of the amplitude.
  • the object of the invention is to be able to maintain a constant frequency of the oscillator, in its useful range of operation, based on the amplitude variations to correct an effect comparable to a non-linearity of the spring of recall.
  • the invention relates to a mechanical oscillator isochronism corrector according to claim 1
  • the corrector may advantageously comprise second means for adjusting the position of the contact portion, for adjusting the position in which the oscillator comes into contact with the flexible blade, said second adjustment means being integral with the frame and independent of the first adjustment means.
  • the invention also relates to an escapement mechanism equipped with a corrector as proposed above.
  • the isochronism corrector according to the invention is particularly applicable to the exhaust system described in the document EP 1736838 already quoted, in particular at figure 2a , which may be referred to for details on non-specific elements of the present invention.
  • the essential elements of such an escapement are represented on the figure 13 .
  • a pendulum 1 (partially shown) oscillating about an axis 2 is recognized and its return spring, or spiral spring, 3 fixed between an arm of the balance and a frame 4 of the watch.
  • a T-piece called anchor 6 can be associated with the balance, to form a two-stage oscillator.
  • an escapement wheel 5 is driven by two elastic strips 7 connected at one end to the balance 1 or to the anchor 6, and whose other end, or pallet, engages in the teeth (partially shown)
  • the term mechanical oscillator refers to the balance and its elastic return system or, the balance, its elastic system and the anchor 6, forming a second stage of the oscillator .
  • the driving torque of the mainspring decreases, resulting in a corresponding decrease in the oscillation amplitude of the oscillator (to maintain the balance with the dissipated power) and also of its frequency by the effect of the permanent contact.
  • the frequency varies linearly with the variations of the motor torque.
  • the principle of the invention consists in providing the oscillator with a corrector 10 having a frequency characteristic inverse to its own in the operating domain.
  • the figure 1 represents such a corrector. It comprises a frame 12, intended to allow the assembly of the corrector on the watch movement in which it participates. This frame 12 is rigid and ensures accurate positioning of the corrector with reference to the exhaust. It also makes it possible to serve as a reference for the mobile parts of the corrector which will be described below.
  • the corrector 10 also comprises a flexible blade 14, integral with the frame and defining a longitudinal axis AA. This flexible blade is intended to cooperate with the oscillator of the exhaust, in particular with its anchor 6, at the level of a pin 9 integral with the anchor, the figure 13 showing two.
  • the flexible blade 14 is connected to the frame by means of adjustment systems, which will now be described.
  • the blade 14 is embedded in a first intermediate element 16.
  • the latter comprises, according to the example illustrated in the drawing, a body 16a of parallelepipedal general shape, of axis parallel to the axis AA in neutral position.
  • This body 16a is provided with a transverse wing 16b, on which is embedded the flexible blade 14.
  • the body 16a is extended by a tail 16c to limit the displacement of the body 16a.
  • the first intermediate element 16 is secured to the frame 12, thanks to a first 18a and a second 18b elastic blades.
  • the first elastic blade 18a is integrally arranged on the flange 16b, in the extension of the flexible blade 14.
  • the second blade 18b is integrally arranged on the body 16a, on the opposite side to the flexible blade 14, in a direction perpendicular to the first blade 18a.
  • the resilient blades are connected to a second intermediate element, serving as a first reference element, with respect to which the resilient blades 18a and 18b can deform.
  • the resilient blades 18a and 18b associated with the first intermediate member 16 form a first deformable structure. More particularly, it is a resiliently deformable structure around a pivot to remote compliance center (better known as Remote Center Compliant flexure pivot), whose center of rotation is located at the intersection of the blades elastic.
  • the first reference element is provided with a preloading finger 22, positioned so as to exert stress on the flexible blade 14.
  • the first reference element being fixed during the deformations of the deformable structure, it is understood that the flexible blade 14 moves with reference to preload finger 22, which has the effect of modifying the stress exerted by the finger on the flexible blade 14, as illustrated by FIG. figure 5 .
  • a positioning system 24 of the deformable structure which will be described in detail later with reference to the figures 10 and 11 , is arranged to act on the first intermediate element 16 at the tail 16c, and move the flexible blade 14 around the center of rotation of the first deformable structure and thus adjust the prestressing it undergoes.
  • the second intermediate element 20 comprises, according to the example illustrated in the drawing, a body 20a of parallelepipedal general shape, of axis parallel to the axis AA in neutral position.
  • This body 20a is provided with a transverse wing 20b, on which is embedded the elastic blade 18a.
  • the body 20a is extended by a tail 20c to limit the movement of the body 20a.
  • the second intermediate element 20 is integral with the frame 12, thanks to a first 32a and a second 32b elastic blades.
  • the first elastic blade 32a is disposed on the flange 20b, in the extension of the flexible blade 14 and the elastic blade 18a.
  • the second blade 32b is disposed on the body 20a, on the opposite side to the flexible blade 14.
  • the elastic blades 32a and 32b are connected to the frame 12, serving as a second reference element, with respect to which the resilient blades 32a and 32b can be deform.
  • the resilient blades 32a and 32b associated with the second intermediate element 20 form a second deformable structure. More particularly, it is an elastically deformable structure around a pivot with a remote compliance center, whose center of rotation is located at the intersection of the elastic blades.
  • the elastic blade 32b is arranged in such a way that the center of rotation of the first deformable structure coincides with that of the second deformable structure.
  • the body 20 moves relative to the frame 12, integrally with the first elastic structure and the flexible blade 14.
  • the flexible blade 14 and particularly its end and its contact portion 14a intended to come into contact with the anchor 6, move with reference to the oscillator, which has the effect of modifying the position of the blade along the path followed by the pin 9 as shown in figure 6 . Note in passing that this setting has no influence on the prestressing force of the flexible blade 14 against the preload finger 22, since the blade 14 and the finger 22 move together.
  • a positioning system 34 of the second deformable structure which will be described in detail later with reference to the figures 10 , 11 and 12 , is arranged to act on the second intermediate element 20 at the tail 20, and move the flexible blade 14 and the first reference element around the center of rotation of the second deformable structure and thus adjust the point of contact between the pin 9 of the anchor 6 and the flexible blade 14. It will be noted in passing, on the figure 6 , the stroke limitation achieved through the tail 20c which bears on the frame 12.
  • FIGS 2 to 4 show different positions of the pin 9 with reference to the flexible blade 14, during oscillation of the oscillator, to better understand the action of flexible blade 14 on the oscillator of the movement.
  • the flexible blade 14 is in its neutral position, that is to say that the first and second resiliently deformable structures are not deformed by their respective positioning system.
  • the flexible blade 14 is in abutment against the pin 9 secured to the anchor 6. It should be noted that, for optimum operation of the corrector, and as shown particularly in FIG. figure 9 , the center of the circular path that follows the pin 9 is located in the plane of the flexible blade 14, of length L, at a distance L / 3 of its point of installation in the transverse wing 16b. The center of rotation of the anchor 6 coincides with the pivot centers of the elastically deformable structures.
  • the pin 9 is shown in the position it has when the anchor 6 is in the neutral position, that is to say with the spiral spring at rest. In this position, the flexible blade is detached from the preloading finger 22.
  • the pin 9 is shown in the position it has when the anchor 6 is in the extreme position to the right, with reference to the drawing. In this position, the flexible blade 14 is more detached from the preloading finger 22 than in the position of the figure 2 .
  • the pin 9 is shown in the position it has when the anchor 6 is in the extreme position to the left, with reference to the drawing. In this position, the flexible blade 14 bears against the preload stop and is no longer in contact with the pin 9 of the anchor 6.
  • the contact portion 14a of the blade 14 with the pin 9 follows a path substantially coincident with that of the pin 9, thus minimizing the relative friction between these two parts.
  • the adjustment of the contact angle between the pin 9 and the flexible blade 14, set by the second elastically deformable structure has no influence on the adjustment of the prestressing.
  • the preload adjustment also has little or no influence on the adjustment of the contact angle
  • the preloading finger 22 must be placed as close as possible to the contact portion. 14a of the flexible blade 14 intended to be in contact with the pin 9. In the first order, it can be considered that the adjustment of the prestressing and the adjustment of the contact angle are independent of one another.
  • the figure 7 proposes a second embodiment of the invention, in which the corrector according to the invention has, arranged symmetrically with respect to an axis parallel to the axis AA, two correctors such as that described above, each defining a first and a second parts.
  • the anchor 6 has two pins 9, which are shown in the neutral position.
  • the four elastically deformable structures are also presented in a neutral position, that is to say undeformed.
  • the flexible blades 14, the deformable structures and the frame 12 of the first and second parts form a flat piece, preferably made monolithically, by the known techniques of the skilled in the art, such as wire electroerosion, photolithography or deep etching.
  • the centers of rotation of the deformable structures can not be confused with the center of rotation of the anchor 6, as for the first embodiment.
  • the center of pivoting of the anchor 6 is positioned in the middle of the segment connecting the pivot centers of the deformable structures, on the one hand, of the first part of the corrector and, on the other hand, of the second part of the corrector.
  • the blades 14 are arranged closest to a line perpendicular to the trajectory of the oscillator.
  • the figure 8 illustrates a third adjustment that the isochronism corrector, in its simple or symmetrical versions, can present.
  • This adjustment makes it possible to act on the active length of the flexible blade 14 with reference to the oscillator. In other words, it acts on the distance between the point of insertion of the flexible blade 14 and the flexible blade support point 14 on the pin 9.
  • the frame 12 is mounted to move in translation in translation. reference to the oscillator, in a direction parallel to the axis AA. This can be simply obtained by oblongs 36 formed in the frame 12, within which clamping screws 38 (FIG. Fig. 12 ). As a result of this adjustment, the apparent rigidity of the flexible blade 14 is modified.
  • FIG 8 there is shown a shift of the corrector towards the oscillator, which shortens the active length of the flexible blade 14 and thus increases its apparent rigidity. Note that this setting has no effect on the prestressing force of the flexible blade 14 against the preload finger 22. In addition, if the angular position of the pin 9 for which the latter loses contact with the flexible blade 14 to course of its displacement to the left (with reference to the drawing) is located with reference to the preload finger 22, on a line parallel to the axis AA, then the adjustment of the rigidity shown in this figure has no influence either on the adjustment of the contact angle described in figure 6 . Finally, note that the setting shown on this figure 8 shifts the center of pivoting structures elastically deformable relative to the center of rotation of the anchor. This offset has the effect of slightly increasing the friction at the point of contact between the pin 9 of the anchor 6 and the flexible blade 14, but in acceptable proportions.
  • the isochronism corrector according to the invention can be machined in a metal alloy sheet with properties suitable for the manufacture of springs (it is possible to choose alloys based on copper and beryllium or carbon steel, known from the skilled person).
  • the different holes, tapping and milling are done first.
  • treatment is carried out by structural hardening.
  • the elastic structure is cut by wire EDM.
  • the silicon corrector can be made using the DRIE (Deep Reactive Ion Etching) technique.
  • the figures 10 and 11 represent the positioning systems for adjusting the deformation of deformable structures, advantageously used in an isochronous corrector according to the invention. The skilled person may consider using other positioning systems.
  • the figures particularly represent the positioning system 24 of the first deformable structure, but the positioning system 34 of the second deformable structure is quite similar.
  • each positioning system comprises two set screws 40 which ensure both the actual adjustment, that is to say the displacement of the elastically deformable structure, and the locking of its position.
  • the set screws 40 are screwed into studs 41, themselves fixed to the frame 12 of the corrector.
  • the tail 16c or 20c has a circular recess 42, so that the action of the conical portion of the needle cooperates effectively with the intermediate element 16 or 20.
  • the screws Needles 40 are eccentrically disposed with respect to the circular recess 42, offset from the shank side 16c or 20c.
  • the needle screws 40 exert a pressure only on the intermediate element 16 or 20 with which they cooperate.
  • the depression of the needle screw 40 with reference to the intermediate element 16 or 20 and therefore the radius of the cone at the contact with the recess 42 makes it possible to adjust the position of the intermediate element 16 or 20.
  • one of the screws 40 of a positioning system is slightly loosened, then the tail 16c or 20c is brought into contact with this screw 40 by slightly tightening the other screw 40.
  • the displacement can be estimated by means of an angular mark fixed directly on the clamping screws.
  • the adjustment of the deformable structures can be performed with a precision of the order of one micron.
  • the two screws acting at an intermediate element 16 or 20 are tightened, the position of this element is secured. It is particularly interesting to be able to adjust the position of the deformable structures and the locking of their positioning, by means of a single device, as well, it avoids any risk of changing the setting when locking.
  • figure 12 represents the corrector according to the invention in its symmetrical version, provided with positioning systems 24 and 34 of each elastically deformable structures. It can be seen that the screws of the adjustment systems are advantageously accessible from above, which, given the accuracy of the adjustments to be made, is an important advantage at the practical level, for the operations to be performed manually by a watchmaker.
  • an isochronous corrector offering particularly interesting adjustment facilities of its action on a mechanical oscillator.
  • its design allows an easy and precise realization, limiting the clutter generated in the watch movement.
  • a blade is a piece of flat, thin and flexible material. Flexibility can be achieved over the entire length of the blade or only in a limited portion. It is also conceivable to have a blade whose flexibility is obtained by a structure elastically around a pivot with a remote compliance center.
  • the figure 14 proposes such an arrangement, wherein each corrector portion has three structures with remote compliance center, two similar to those described above, and one to ensure the bending of the blade. It will be noted that, in a particularly advantageous manner, it is possible, in such a configuration, that the centers of rotation of the deformable structures coincide with the center of rotation of the anchor 6, as for the first embodiment described above. .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electric Clocks (AREA)
  • Micromachines (AREA)

Claims (15)

  1. Isochronismuskorrektor eines mechanischen Oszillators, der aufweist:
    - ein Gestell (12),
    - eine flexible Klinge (14), die mit dem Gestell verbunden ist, um auf den mechanischen Oszillator auf Ebene eines Kontaktabschnitts (14a) einzuwirken, den die Klinge aufweist,
    - erste Einstellmittel der Vorspannung der flexiblen Klinge, die einen Vorspannungsfinger (22) umfassen, der auf die flexible Klinge einwirkt, wobei die ersten Einstellmittel mit dem Gestell verbunden sind,
    wobei der Isochronismuskorrektor derart ausgebildet ist, dass er eine Frequenzcharakteristik umgekehrt zum Oszillator im Betriebsbereich hat.
  2. Isochronismuskorrektor nach Anspruch 1, dadurch gekennzeichnet, dass er ferner zweite Einstellmittel der Position des Kontaktabschnitts (14a) aufweist, um die Position einzustellen, in der der Oszillator mit der flexiblen Klinge in Kontakt tritt, wobei die zweiten Einstellmittel mit dem Gestell verbunden und von den ersten Einstellmitteln unabhängig sind.
  3. Isochronismuskorrektor nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass er ferner dritte Einstellmittel der Winkelsteifigkeit der flexiblen Klinge (14) in Bezug zum mechanischen Oszillator durch Verschiebung des Gestells (12) aufweist.
  4. Korrektor nach Anspruch 2, dadurch gekennzeichnet, dass die ersten und zweiten Einstellmittel jeweils von einer um einen Zapfen mit versetzem Compliancezentrum elastisch verformbaren Struktur gebildet werden, wobei jede Struktur mit einem jeweiligen Positionierungssystem unabhängig verformbar ist.
  5. Korrektor nach Anspruch 4, dadurch gekennzeichnet, dass sich das Compliancezentrum der ersten Einstellmittel an derselben Stelle wie das Compliancezentrum der zweiten Einstellmittel befindet.
  6. Korrektor nach Anspruch 5, dadurch gekennzeichnet, dass die verformbare Struktur der ersten Einstellmittel ein erstes Übergangselement (16) aufweist, das mit der flexiblen Klinge (14) verbunden ist, und eine erste (18a) und eine zweite (18b) elastische Klinge, die einerseits mit einem Referenzelement, das mit dem Vorspannungsfinger (22) ausgestattet ist, und andererseits mit dem ersten Übergangselement (16) elastisch verbunden sind.
  7. Korrektor nach Anspruch 5, dadurch gekennzeichnet, dass die verformbare Struktur der zweiten Einstellmittel ein zweites Übergangselement (20), das mit der flexiblen Klinge (14) verbunden ist, und eine erste (32a) und eine zweite (32b) elastische Klinge aufweist, die einerseits mit einem Referenzelement und andererseits mit dem zweiten Übergangselement (16) verbunden sind.
  8. Korrektor nach den Ansprüchen 6 und 7, dadurch gekennzeichnet, dass das Referenzelement der verformbaren Struktur der ersten Einstellmittel von der verformbaren Struktur der zweiten Einstellmittel gebildet wird.
  9. Korrektor nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, dass das Gestell, die Klinge und die elastisch verformbaren Strukturen ein ebenes und/oder monolithisches Teil bilden.
  10. Korrektor nach Anspruch 7 oder Anspruch 8, dadurch gekennzeichnet, dass er auf einem selben Gestell (12) angeordnet, n zusätzliche Korrektoren nach Anspruch 7 oder Anspruch 8 umfasst.
  11. Korrektor nach Anspruch 10, der zwei Korrektoren nach Anspruch 7 oder Anspruch 8 aufweist, die im Verhältnis zu einer Linie lotrecht zum Weg einer Stützzone, die den Oszillator aufweist, symmetrisch angeordnet sind.
  12. Korrektor nach einem der Ansprüche 10 und 11, dadurch gekennzeichnet, dass das Gestell, die Klingen und die elastisch verformbaren Strukturen ein ebenes und/oder monolithisches Teil bilden.
  13. Hemmungsmechanismus, der umfasst:
    - einen Korrektor (10) nach einem der Ansprüche 1 bis 9, wobei die flexible Klinge (14) eine Länge L und ein mit dem Gestell verbundenes Ende aufweist, und
    - einen mechanischen Oszillator, der eine Stützzone (9) aufweist, die dazu bestimmt ist, mit dem Kontaktabschnitt (14a) der flexiblen Klinge zusammenzuarbeiten, wobei die Stützzone eine kreisförmige Bahn beschreibt, dadurch gekennzeichnet, dass die Klinge gemäß einer ersten Linie lotrecht zu der Bahn ausgebildet ist und dass sich das Zentrum der Bahn in der Ebene der Klinge in einem Abstand L/3 von ihrem Verbindungspunkt mit dem Gestell befindet.
  14. Hemmungsmechanismus, der umfasst:
    - einen Korrektor nach einem der Ansprüche 10 bis 12, wobei die flexiblen Klingen (14) eine Länge L und ein mit dem Gestell verbundenes Ende aufweisen, und
    - einen mechanischen Oszillator, der eine erste und eine zweite Stützzone (9) aufweist, die dazu bestimmt sind, jeweils mit dem Kontaktabschnitt (14a) der ersten und zweiten flexiblen Klinge zusammenzuarbeiten, wobei die Stützzonen eine einzige kreisförmige Bahn beschreiben,
    dadurch gekennzeichnet, dass die Klingen so nah wie möglich zu einer Linie lotrecht zur Bahn des Oszillators ausgebildet sind.
  15. Hemmungsmechanismus nach Anspruch 14, dadurch gekennzeichnet, dass sich das Zentrum der Bahn symmetrisch zwischen den flexiblen Klingen in einem normalen Abstand L/3 von ihrem Verbindungspunkt mit dem Gestell befindet.
EP09168113.0A 2009-08-18 2009-08-18 Isochronismuskorrektor für Uhrhemmungsmechanismus und mit einem solchen Korrektor ausgestatteter Hemmungsmechanismus Active EP2290476B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09168113.0A EP2290476B1 (de) 2009-08-18 2009-08-18 Isochronismuskorrektor für Uhrhemmungsmechanismus und mit einem solchen Korrektor ausgestatteter Hemmungsmechanismus
US12/858,606 US8672536B2 (en) 2009-08-18 2010-08-18 Isochronism corrector for clockwork escapement and escapement provided with such a corrector

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Application Number Priority Date Filing Date Title
EP09168113.0A EP2290476B1 (de) 2009-08-18 2009-08-18 Isochronismuskorrektor für Uhrhemmungsmechanismus und mit einem solchen Korrektor ausgestatteter Hemmungsmechanismus

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EP2290476A1 EP2290476A1 (de) 2011-03-02
EP2290476B1 true EP2290476B1 (de) 2014-04-23

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Cited By (1)

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EP2553533B2 (de) † 2010-04-01 2019-06-19 Rolex S.A. Blockiervorrichtung für Zahnrad

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CH704649B1 (fr) * 2011-03-23 2019-04-15 Lvmh Swiss Mft Sa Elément oscillant pour organe réglant horloger.
EP2864844B1 (de) * 2012-06-26 2020-09-02 Rolex Sa Verfahren zur bestimmung einer unwuchteigenschaft eines oszillators
EP3032351A1 (de) * 2014-12-09 2016-06-15 LVMH Swiss Manufactures SA Uhrmechanismus, Uhrwerk und Uhr mit solch einem Mechanismus
CH711519B1 (fr) * 2015-09-15 2020-04-15 Vaucher Mft Fleurier S A Pont réglable pour pièce d'horlogerie.
CH713288A1 (fr) 2016-12-23 2018-06-29 Sa De La Manufacture Dhorlogerie Audemars Piguet & Cie Composant monolithique flexible pour pièce d'horlogerie.
US10216146B2 (en) * 2017-07-18 2019-02-26 Patek Philippe Sa Geneve Indicator actuating organ for a timepiece
USD853879S1 (en) * 2017-09-15 2019-07-16 Patek Philippe Sa Geneve Corrector for timepieces
CH714363B1 (fr) * 2017-11-23 2022-06-15 Gfpi Sa Système d'entretien d'un oscillateur horloger.
EP3722888B1 (de) 2019-04-09 2023-05-17 Ecole Polytechnique Fédérale de Lausanne (EPFL) Mechanischer oszillator mit abstimmbarem isochronismusmangel
CH716525B1 (fr) * 2019-08-26 2023-02-28 Csem Ct Suisse Delectronique Microtechnique Sa Rech Developpement Régulateur mécanique horloger auto-démarrant.
WO2024100597A1 (en) 2022-11-09 2024-05-16 Ecole Polytechnique Federale De Lausanne (Epfl) Pivot, process for manufacturing such a pivot, oscillator comprising such a pivot, watch movement and timepiece comprising such an oscillator

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FR648846A (fr) * 1927-02-21 1928-12-14 échappement à ancre pour mouvements d'horlogerie
CH386935A (fr) * 1962-09-12 1964-09-30 Ebauches Sa Pièce d'horlogerie électrique
US3695032A (en) * 1971-06-07 1972-10-03 Bunker Ramo Isochronal correction system
DE602005005465T2 (de) 2005-06-23 2009-04-09 CSEM Centre Suisse d'Electronique et de Microtechnique S.A. - Recherche et Développement Uhr
EP2090941B1 (de) * 2008-02-18 2011-10-19 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Mechanischer Oszillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2553533B2 (de) † 2010-04-01 2019-06-19 Rolex S.A. Blockiervorrichtung für Zahnrad

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US8672536B2 (en) 2014-03-18
EP2290476A1 (de) 2011-03-02
US20110044139A1 (en) 2011-02-24

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