EP3333640B1 - Mechanismus der wandernden zeitgleichung, der durch eine differenzialvorrichtung gesteuert wird - Google Patents

Mechanismus der wandernden zeitgleichung, der durch eine differenzialvorrichtung gesteuert wird Download PDF

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Publication number
EP3333640B1
EP3333640B1 EP17151406.0A EP17151406A EP3333640B1 EP 3333640 B1 EP3333640 B1 EP 3333640B1 EP 17151406 A EP17151406 A EP 17151406A EP 3333640 B1 EP3333640 B1 EP 3333640B1
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Prior art keywords
time
equation
civil
wheel
planetary gear
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French (fr)
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EP3333640A1 (de
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Sylvain Dauby
Alain Zaugg
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Montres Breguet SA
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Montres Breguet SA
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Priority to CN201711274187.4A priority Critical patent/CN108181797B/zh
Publication of EP3333640A1 publication Critical patent/EP3333640A1/de
Priority to HK18115039.1A priority patent/HK1255965A1/zh
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    • G04B13/026—
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/23—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands

Definitions

  • the subject of the present invention is a running equation of time mechanism for a timepiece. More specifically, the invention relates to a running equation of time mechanism driving a true time minute hand concentric with an hour hand.
  • true solar time which corresponds to the time that elapses between two consecutive zenith passages of the Sun at the meridian of the same place
  • mean solar time or civil time which is the average, taken over the year, of the duration of all true solar days.
  • some timepieces have, in addition to the hand which indicates the minute of civil time, a so-called equation of time mechanism which includes a hand which moves next to a graduated scale to indicate the difference between the minute of civil time and the minute of solar time for a given day.
  • This true time minute hand is driven by an equation of time cam whose profile is determined by the difference between mean solar time and true solar time for every day of the year.
  • the walking equation of time Another mechanism for indicating the time difference between civil time and true time is known as the walking equation of time.
  • the hands of a timepiece fitted with a running equation of time mechanism comprises two concentric minute hands, one indicating the minute of civil time, and the other indicating the minute of true time.
  • the difference between the civil time minute hand and the true time minute hand is determined by the difference between the mean solar time and the true solar time for the day of the year in question.
  • the true time minute hand of a running equation of time mechanism is driven by an equation of time cam.
  • the equation of time cam is driven in rotation at the rate of one revolution per year from a date mechanism which may be simple or perpetual.
  • the simple calendar is a mechanism arranged to indicate the day of the week, the calendar of the month, the month of the year or even the phases of the Moon, but which does not take into account the variation in the number of days in the month. (months of 28, 29 or 30 days).
  • the user of a watch with a simple date mechanism will have to carry out a manual correction at the end of every month that has less than 31 days. For example, on February 28 or April 30, a manual intervention will be required.
  • the perpetual calendar mechanism it allows, like a simple calendar mechanism, to indicate the day, the date, the month and the phases of the Moon. But unlike a simple calendar mechanism, a perpetual calendar mechanism automatically takes into account the length of the months (28, 29 and 30 days), without manual intervention. A perpetual calendar mechanism therefore automatically takes leap years into account.
  • Equation of time cam 1 carries a month disc 2 which rotates at the same speed as it and which enables the position of this equation of time cam 1 to coincide with the date indicated by the date mechanism in order that the minute hand of solar time 4 indicates the exact difference between the minute of civil time and the minute of solar time.
  • the calendar mechanism simple or perpetual, can be of any known type and will not be described here in its entirety. It suffices, in fact, for a good understanding, to know that this date mechanism drives the equation of time cam 1 at the rate of one complete revolution per year. However, for illustrative purposes only, a date mobile 6 has been shown driving a hand 8 which indicates the date (from 1 to 31). This mobile with date 6 rotates at the rate of one complete revolution per month. It is actuated by the date mechanism and drives the equation of time cam 1 via an intermediate date deflection wheel 10 which makes it possible to reverse the direction of rotation, and a reduction wheel set 12 which makes it possible to reduce the speed of rotation from one full turn per month to one full turn per year.
  • the solar time minute hand 4 is driven by a differential gear device 14 which has as respective inputs a cog driving a civil time minute hand 18, and a rake 20 which cooperates with the equation of time cam 1 (on the figure 1 , the rake 20 is represented in its two extreme positions, once in solid line, and the other time in dot-and-dash line).
  • the differential gear device 14 comprises at least one and, preferably, two planet gears 22 driven by the timer of the watch movement. These two satellite pinions 22 are able to turn on themselves and to roll on the internal toothing 24 of an equation of time wheel 26.
  • the latter also has on its outer periphery a first toothed sector 28 by which it cooperates with a second toothed sector 30 with which the rake 20 is provided at one of its ends.
  • This rake 20 is subjected to the return action of a spring (not shown) fixed to the frame of the watch and which tends to apply a feeler 32 forming the other end of the rake 20 against the profile of the cam of equation time 1.
  • the solar time display train comprises a solar time display pinion 34 placed in the center of the differential gear device 14.
  • This solar time display pinion 34 meshes on the one hand with the satellite pinions 22, and on the other hand carries a solar time display wheel 38 which meshes with a roadway 40 on the barrel from which the solar time minute hand 4 is driven.
  • This cog 38, 40 makes it possible to return the display of the solar minute to the center 42 of the watch movement, so that the solar time minute hand 4 is concentric with the civil time minute hand 18.
  • the equation of time cam 1, the rack 20 and therefore the equation of time wheel 26 are stationary.
  • the satellite pinions 22 are driven by the clockwork movement of the watch. They therefore turn on themselves and roll on the internal toothing 24 of the equation of time wheel 26, driving the solar time display pinion 34 in rotation, which allows the solar time minute hand 4 to turn concomitantly with the minute hand of civil time 18.
  • the difference between the solar time minute hand 4 and the civil time minute hand 18 therefore remain constant over a period of 24 hours.
  • the equation of time cam 1 pivots, driven by the date mechanism which moves the calendar from one day to the next.
  • the feeler 32 which is in contact with the profile of the equation of time cam 1 in turn causes the rake 20 to pivot.
  • This rake 20, by pivoting drives the equation of time wheel 26 in rotation.
  • the satellite pinions 22 being, during this brief interval of time, substantially immobile (they make a complete turn on themselves in 1 hour), turn on themselves while being driven in rotation by the equation of time wheel 26, and in turn drive the solar time display pinion 34 so as to again exactly adjust the position of the solar time minute hand.
  • the running equation of time mechanism described above therefore makes it possible, by means of a civil time minute hand and a solar time minute hand, to display at any time the difference in time between the mean solar time and true time.
  • the document CH698613 B1 describes a walking equation of time device comprising a differential mechanism.
  • the object of the present invention is to overcome the problems described above as well as others by providing a running equation of time mechanism controlled by a differential gear device which is in particular simpler to read.
  • the present invention relates to a running equation of time mechanism according to independent claim 1.
  • the present invention provides a running equation of time mechanism, the switching of which is only formed of a true time minute hand concentric with a civil time hour hand.
  • the reading of solar time is therefore immediate.
  • the problem of reading solar time on days when the difference between the minute of civil time and the minute of solar time is small does not arise.
  • an additional civil time switch conventionally formed of a supplementary hour hand civil time and a concentric civil time minute hand.
  • the reading of civil time is immediate and the user does not have to perform any mental operation to distinguish the minute hand of civil time from the minute hand of solar time, then reconstruct the civil time by assessing the difference between the civil time hour hand and the civil time minute hand.
  • the present invention proceeds from the general inventive idea which consists in providing a running equation of time mechanism comprising a switch whose role is to indicate the solar time or real time by means of a civil time hour hand and a real time minute hand concentric with the civil time hour hand, the switch not having a civil time minute hand.
  • a running equation of time mechanism comprising a switch whose role is to indicate the solar time or real time by means of a civil time hour hand and a real time minute hand concentric with the civil time hour hand, the switch not having a civil time minute hand.
  • the civil time hour hand therefore merges with the real time hour hand, so that the indication provided to the user by the handpiece formed of a civil time hour hand and a Concentric true time minute hand matches exact true time.
  • the device for displaying solar time or true time according to the invention can be advantageously supplemented by a civil time switch comprising an hour hand and a concentric minute hand and which are driven by the same roadway as the true time display device.
  • a civil time switch comprising an hour hand and a concentric minute hand and which are driven by the same roadway as the true time display device.
  • the object of the present invention is to integrate into a timepiece such as a wristwatch a new kind of running equation of time mechanism, the hand-fitting of which includes a true time minute hand concentric at a civil time hour hand.
  • the running equation of time mechanism according to the invention designated as a whole by the general reference numeral 44, comprises a switch whose role is to indicate solar time or true time by means of an hour hand of the civil time 46 and a true time minute hand 50, concentric with the civil time hour hand 46, and which indicates the true time minute.
  • the true time minute hand 50 may, for example, end with a representation of the astrological symbol of the sun 52.
  • the exact position of the true time minute hand 50 for a given day can be determined once in 24 hours, around midnight, or else be continuously adjusted.
  • the equation of time cam 54 is fixed to an equation of time wheel 56 which is driven at the rate of one complete revolution per year by a simple or perpetual calendar mechanism (not shown) that comprises the timepiece.
  • This date mechanism can be of any known type and will not be described here in detail. It suffices, in fact, for a good understanding of the invention, to know that this date mechanism drives the equation of time wheel 56 on which the equation of time cam 54 is fixed at the rate of a complete revolution. per year. In the case where the date mechanism is also used to display the date, this date mechanism may comprise a date wheel 58 which rotates at the rate of one complete revolution per month, driving a date indicator 104.
  • the equation of time wheel 56 is driven by the date wheel 58 via an intermediate date return wheel 60 making it possible to reverse the direction of rotation, and a reduction wheel set 62 which makes it possible to reduce the rotation speed d one full turn per month to one full turn per year.
  • the true time minute hand 50 is driven by a differential gear device 64 which has respective inputs (see picture 3 ) a mobile 66 of a going train and an equation of time lever 68.
  • the mobile 66 of the going train drives the civil time hour hand 46, while the equation of time lever 68 cooperates with the equation of time cam 54.
  • a civil time hours cannon 70 is driven by the mobile 66 of the going train of the timepiece movement of the timepiece via a roadway 72 fixed for example by driving on a roadway pinion 74.
  • the carriage pinion 74 drives a reduction satellite wheel set 76 formed of a first satellite wheel 78 and a first satellite pinion 80 secured to the first satellite wheel 78.
  • the geared satellite wheel set 76 is pivotally mounted around a first pin 82 fixed for example by driving in a differential frame 84 to which the civil time hour barrel 70 is attached on which the civil time hour hand 46 is driven.
  • the first satellite pinion 80 rolls on a first internal toothing 86 of a first differential crown 88 which is carried by the clock movement and which is fixed .
  • the first satellite pinion 80 pivots the differential frame 84 and therefore the civil time hours barrel 70 which is integral with the differential frame 84.
  • the reducing mobile satellite 76 makes it possible, by a reduction of one twelfth, to pass from the minute of civil time to the hour of civil time.
  • a multiplier satellite wheel set 90 is formed of a second satellite wheel 92 and a second satellite pinion 94 secured to the second satellite wheel 92.
  • the multiplier satellite wheel set 90 is mounted free around a second pin 96 fixed for example by driving in the differential frame 84 to which the civil time hours barrel 70 is attached.
  • the civil time hours barrel 70 and therefore the differential frame 84 rotate, they drive the second pin 96 and, consequently, the multiplier satellite mobile 90 whose second satellite pinion 94 rolls on a second internal toothing 98 of a mobile differential ring gear 100 which, as will be seen below, is in engagement with the equation of time cam 54.
  • the second satellite wheel 92 in turn drives a true time minute barrel 102 on which the true time minute hand 50 is driven.
  • the multiplier mobile satellite 90 makes it possible, by a multiplication by twelve, to pass from the hour of civil time to the minute of true time.
  • the reducing satellite mobile 76 and the multiplier satellite mobile 90 turn on themselves while describing a circular trajectory centered on the barrel of the hours of civil time 70.
  • the reducing satellite mobile 76 and the mobile multiplier satellite 90 move on the same circle, centered on the barrel of civil time hours 70, being angularly spaced.
  • the mobile differential crown 100 is controlled in pivoting by the equation of time lever 68 provided with a feeler tip 106 through which the equation of time lever 68 is in contact with the profile of the cam of equation of time 54.
  • This equation of time lever 68 is held in elastic support against the profile of the equation of time cam 54 by a spring 108.
  • This equation of time lever 68 is also provided with a first tooth 110 in engagement with a corresponding second tooth 112 provided on the differential crown mobile 100 to control the movement of the latter. It is in fact understood that at an instant close to midnight when the date mechanism changes the date, it controls the advance of one step of the date wheel 58. During this brief instant when the date change occurs, the differential frame 84 and therefore the civil time hours cannon 70 can be considered immobile.
  • the mobile differential crown 100 drives the second satellite pinion 94 and therefore the second satellite wheel 92 which, in turn, meshes with the true time minute barrel 102 on which the minute hand of the true time 50.
  • the position of the true time 50 minute hand is thus adjusted for the day to come. In the case of a dragging date mechanism, the position of the true time minute hand 50 is continuously adjusted.
  • roadway 72 drives a second roadway 118 via an intermediate idler wheel 120.
  • This second roadway 118 is fixedly mounted on a civil time minute barrel 122 on which is driven a civil time minute hand 124.
  • the minute barrel civil time 122 drives via a second reduction mobile 126 comprising a reduction wheel 128 fixed on a reduction pinion 130 a second civil time hour cannon 132 on which is driven a second civil time hour hand 134.
  • the intermediate return wheel 120 the civil time display by means of the second civil time hour hand 134 and the civil time minute hand 124 rotates in the right direction above a dial of watch 136.
  • the intermediate return wheel 120 also makes it possible to ensure sufficient spacing between the time display solar and the true time display so that these two displays do not interfere with each other.
  • the reading of civil time is thus also immediate and the user does not have to perform any mental operation to distinguish the civil time minute hand from the solar time minute hand, then reconstruct the civil time by appreciation of the gap between the civil time hour hand and the civil time minute hand.
  • the same power take-off is used to produce the minute of true time on the one hand, and the civil time on the other hand, which considerably simplifies assembly.
  • the solar time or true time display device and the civil time display device are arranged on the same side of the watch dial 136.
  • the solar time or true time display device is arranged on the dial side of the watch 136, while the civil time display device is arranged on the side of a bottom 138 of the watch. It can be seen in this exemplary embodiment that it is possible to dispense with the intermediate return wheel 120 because there is no need to correct the direction of rotation of the second civil time display device when it is the other side of the watch.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Electromechanical Clocks (AREA)

Claims (14)

  1. Mechanismus der wandernden Zeitgleichung, umfassend ein Zeigersetzen, deren Aufgabe es ist, die Sonnenzeit oder wahre Zeit ausschließlich mittels eines Stundenzeigers der bürgerlichen Zeit (46) und eines Minutenzeigers der wahren Zeit (50) anzuzeigen, der mit dem Stundenzeiger der bürgerlichen Zeit (46) konzentrisch ist, wobei die Zeigersetzung keinen Minutenzeiger der bürgerlichen Zeit aufweist, wobei der Stundenzeiger der bürgerlichen Zeit (46) auf eine Kanone der bürgerlichen Stunden (70) getrieben ist, die von einem Uhrwerk in Drehung versetzt wird und die ihrerseits eine Kanone der Minuten der wahren Zeit (102) antreibt, auf die der Minutenzeiger der wahren Zeit (50) getrieben ist, wobei der Mechanismus der wandernden Zeitgleichung (44) ebenfalls eine Zeitgleichungskurvenscheibe (54) umfasst, die ein Profil aufweist, das bestimmt wird durch die Differenz, für jeden Tag des Jahres, zwischen der mittleren Sonnenzeit oder bürgerlichen Zeit und der Sonnenzeit oder wahren Zeit, wobei diese Zeitgleichungskurvenscheibe (54) für eine Umdrehung pro Jahr durch das Uhrwerk in Drehung versetzt wird, wobei die Position des Minutenzeigers der wahren Zeit (50) bestimmt wird durch die Position der Zeitgleichungskurvenscheibe (54), wobei der Mechanismus der wandernden Zeitgleichung ebenfalls eine Differenzialgetriebevorrichtung (64) umfasst, von der ein erster Eingang von einem Minutenrohr (72) gebildet wird, das von dem Uhrwerk angetrieben wird und das eine Umdrehung in 1 Stunde absolviert, und von der ein zweiter Eingang von der Zeitgleichungskurvenscheibe (54) gebildet wird, wobei die Differenzialgetriebevorrichtung (64) konzentrisch in Bezug auf den Minutenzeiger der wahren Zeit (50) angeordnet ist, wobei die Differenzialgetriebevorrichtung (64) einen Reduktionssatellitendrehteil (76) umfasst, über welchen ein Minutenrohrtrieb (74), auf dem das Minutenrohr (72) befestigt ist, die Kanone der Stunden der bürgerlichen Zeit (70) antreibt, auf die der Stundenzeiger der bürgerlichen Zeit (46) getrieben ist, und einen Multiplikatorsatellitendrehteil (90), über welchen die Kanone der Stunden der bürgerlichen Zeit (70) die Kanone der Minuten der wahren Zeit (102) antreibt, auf die der Minutenzeiger der wahren Zeit (50) getrieben ist.
  2. Mechanismus der wandernden Zeitgleichung nach Anspruch 1, dadurch gekennzeichnet, dass der Reduktionssatellitendrehteil (76) es ermöglicht, die Drehgeschwindigkeit von einer vollen Umdrehung pro Stunde auf eine volle Umdrehung pro zwölf Stunden zu reduzieren, und dadurch, dass der Multiplikatorsatellitendrehteil (90) es ermöglicht, die Drehgeschwindigkeit von einer vollen Umdrehung in zwölf Stunden auf eine volle Umdrehung pro Stunde zu erhöhen.
  3. Mechanismus der wandernden Zeitgleichung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass sich der Reduktionssatellitendrehteil (76) und der Multiplikatorsatellitendrehteil (90) um sich selbst drehen, indem sie eine Kreisbahn beschreiben, die auf die Kanone der Minuten der wahren Zeit (102) zentriert ist.
  4. Mechanismus der wandernden Zeitgleichung nach Anspruch 3, dadurch gekennzeichnet, dass sich der Reduktionssatellitendrehteil (76) und der Multiplikatorsatellitendrehteil (90) in gleichem Abstand von der Kanone der Minuten der wahren Zeit (102) befinden.
  5. Mechanismus der wandernden Zeitgleichung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass der Reduktionssatellitendrehteil (76) und der Multiplikatorsatellitendrehteil (90) von einem Differenzialgestell (84) freidrehend getragen werden, mit dem die Kanone der Stunden der bürgerlichen Zeit (70) fest verbunden ist.
  6. Mechanismus der wandernden Zeitgleichung nach Anspruch 5, dadurch gekennzeichnet, dass der Reduktionssatellitendrehteil (76) drehend um einen ersten Sperrstift (82) montiert ist und der Multiplikatorsatellitendrehteil (90) drehend um einen zweiten Sperrstift (96) montiert ist, wobei der erste und zweite Sperrstift (82, 96) in dem Differenzialgestell (84) befestigt sind.
  7. Mechanismus der wandernden Zeitgleichung nach Anspruch 6, dadurch gekennzeichnet, dass der Reduktionssatellitendrehteil (76) ein erstes Satellitenrad (78) umfasst, das mit einem ersten Satellitentrieb (80) fest verbunden ist.
  8. Mechanismus der wandernden Zeitgleichung nach Anspruch 7, dadurch gekennzeichnet, dass der Minutenrohrtrieb (74) mit dem ersten Satellitenrad (78) ineinandergreift, und dadurch, dass der erste Satellitentrieb (80) auf einer ersten inneren Zahnung (86) einer festen Differenzialkrone (88) läuft, was des Effekt hat, das Differenzialgestell (84) drehen zu lassen.
  9. Mechanismus der wandernden Zeitgleichung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass der Multiplikatorsatellitendrehteil (90) ein zweites Satellitenrad (92) umfasst, das mit einem zweiten Satellitentrieb (94) fest verbunden ist.
  10. Mechanismus der wandernden Zeitgleichung nach Anspruch 9, dadurch gekennzeichnet, dass das zweite Satellitenrad (92) mit der Kanone der Minuten der wahren Zeit (102) ineinandergreift, und dadurch, dass der zweite Satellitentrieb (94) auf einer zweiten inneren Zahnung (98) einer beweglichen Differenzialkrone (100) läuft, die mit der Zeitgleichungskurvenscheibe (54) kinematisch verbunden ist.
  11. Mechanismus der wandernden Zeitgleichung nach Anspruch 10, dadurch gekennzeichnet, dass die bewegliche Differenzialkrone (100) durch einen Zeitgleichungshebel (68) drehgesteuert wird, der mit einem Tastschnabel (106) versehen ist, mittels dessen der Zeitgleichungshebel (68) dem Profil der Zeitgleichungskurvenscheibe (54) folgt.
  12. Mechanismus der wandernden Zeitgleichung nach Anspruch 11, dadurch gekennzeichnet, dass der Zeitgleichungshebel (68) durch eine Feder (108) elastisch anliegend gegen das Profil der Zeitgleichungskurvenscheibe (54) gehalten wird.
  13. Mechanismus der wandernden Zeitgleichung nach Anspruch 12, dadurch gekennzeichnet, dass der Zeitgleichungshebel (68) mit einem ersten Zahn (110) in Eingriff mit einem entsprechenden zweiten Zahn (112) ausgestattet ist, der auf der beweglichen Differenzialkrone (100) vorgesehen ist, um die Verschiebung dieser Letzteren zu steuern.
  14. Mechanismus der wandernden Zeitgleichung nach einem der Ansprüche 5 bis 13, dadurch gekennzeichnet, dass das Differenzialgestell (84) ein oberes Gestell umfasst, das auf einem unteren Gestell (116) mittels wenigstens einer Schraube (114) befestigt ist.
EP17151406.0A 2016-12-08 2017-01-13 Mechanismus der wandernden zeitgleichung, der durch eine differenzialvorrichtung gesteuert wird Active EP3333640B1 (de)

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Application Number Priority Date Filing Date Title
CN201711274187.4A CN108181797B (zh) 2016-12-08 2017-12-06 通过差动装置控制的时间运行等式机构
HK18115039.1A HK1255965A1 (zh) 2016-12-08 2018-11-23 通過差動裝置控制的時間運行等式機構

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EP16202829.4A EP3333639A1 (de) 2016-12-08 2016-12-08 Mechanismus der wandernden zeitgleichung, der durch eine differenzialvorrichtung gesteuert wird

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509959A1 (de) * 1991-04-17 1992-10-21 Montres Breguet S.A. Uhrwerk
EP1483630B1 (de) * 2002-03-08 2010-05-05 The British Masters SA Uhr mit sonnenzeitanzeige
EP2820486B1 (de) * 2012-02-27 2016-02-17 Blancpain SA Universeller laufzeitgleichungsmechanismus und verfahren zum einstellen eines solchen mechanismus
EP1792235B1 (de) * 2004-09-15 2016-03-16 Blancpain SA Kalenderuhr mit zeitgleichungsvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH696218A5 (fr) * 2001-08-07 2007-02-15 Piguet Frederic Sa Pièce d'horlogerie à quantième comprenant un dispositif d'équation du temps marchante.
EP1286233B1 (de) 2001-08-07 2008-01-23 Piguet, Frédéric S.A. Kalenderuhr mit Äquationsvorrichtung
CH698613B1 (fr) * 2004-11-29 2009-09-15 Richemont Int Sa Mécanisme d'équation du temps avec affichage des minutes marchantes et pièce d'horlogerie munie d'un tel mécanisme.
EP2778800B1 (de) * 2013-03-12 2016-02-24 Blancpain SA. Mechanismus einer universellen fortschreitenden Zeitgleichung und Regulierungsverfahren eines solchen Mechanismus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509959A1 (de) * 1991-04-17 1992-10-21 Montres Breguet S.A. Uhrwerk
EP1483630B1 (de) * 2002-03-08 2010-05-05 The British Masters SA Uhr mit sonnenzeitanzeige
EP1792235B1 (de) * 2004-09-15 2016-03-16 Blancpain SA Kalenderuhr mit zeitgleichungsvorrichtung
EP2820486B1 (de) * 2012-02-27 2016-02-17 Blancpain SA Universeller laufzeitgleichungsmechanismus und verfahren zum einstellen eines solchen mechanismus

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EP3333640A1 (de) 2018-06-13
CN108181797B (zh) 2020-10-13
CN108181797A (zh) 2018-06-19
HK1255965A1 (zh) 2019-09-06
EP3333639A1 (de) 2018-06-13

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