EP0999482A2 - Mécanisme de quantième annuel - Google Patents
Mécanisme de quantième annuel Download PDFInfo
- Publication number
- EP0999482A2 EP0999482A2 EP99120775A EP99120775A EP0999482A2 EP 0999482 A2 EP0999482 A2 EP 0999482A2 EP 99120775 A EP99120775 A EP 99120775A EP 99120775 A EP99120775 A EP 99120775A EP 0999482 A2 EP0999482 A2 EP 0999482A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- teeth
- train
- days
- day
- months
- 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.)
- Granted
Links
- 238000003801 milling Methods 0.000 claims description 4
- 210000003323 beak Anatomy 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
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
- G04B19/00—Indicating the time by visual means
- G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
- G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
- G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
- G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
- G04B19/2536—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement automatically corrected at the end of months having less than 31 days
Definitions
- the present invention relates to an annual calendar mechanism can either be incorporated into a timepiece or form a module autonomous intended to be fixed on a clockwork movement. In all cases, this mechanism is driven by the watch movement it equips.
- the object of the present invention is to provide a mechanism for simple annual calendar, comprising few mobiles and these mobiles being simple to make such as cogs as opposed to shaped cams.
- a another object of the present invention is to create a date mechanism annual whose display can indifferently be presented in the form of a needle cooperating with a graduation, a large window revealing two digits carried by different display discs or a counter traditional showing a number carried by a date crown.
- the annual calendar mechanism object of the present invention is distinguished by the features listed in claim 1.
- the attached drawing illustrates schematically and by way of example three forms execution of the annual calendar mechanism according to the invention.
- Figure 1 is a section of a first embodiment of the mechanism calendar date with a display by hand and graduation according to the line I-I of figures 2,3 or 4.
- Figures 2,3 and 4 are plan views of the mechanism illustrated in Figure 1 in three successive positions illustrating the passage from June 30 to July 1.
- Figure 5 is a section of a second embodiment of the mechanism annual calendar with a display by disc and large window, along the line V-V of Figures 6,8 and 10.
- Figures 6,7; 8,9 and 10,11 are plan views of the mechanism illustrated in Figure 5, respectively without and with the display elements, in three successive positions illustrating the passage from June 30 to July 1.
- Figures 12,13 and 14 are plan views of a third form of the annual calendar mechanism in three successive positions illustrating the passage from June 30 to July 1.
- the annual calendar mechanism is designed as a module independent intended to be mounted between the dial and the movement of a part of watchmaking which provides training. Obviously the same mechanism calendar date could be directly integrated into a movement of watchmaking.
- the annual calendar mechanism results in a display consisting of a needle 1, the end of which moves opposite a graduation 2 carried by the dial 3 of the timepiece, graduation with thirty-one divisions evenly distributed over a circumference and indicating the days within each month.
- This mechanism comprises, in its modular version, mounted on a board 4, a cog for days 8 pivoted in board 4, a cog for months 9 and an intermediate train 10 both also pivoted in plate 4.
- a kinematic link causes the training of these cogs 8, 9 and 10 from a PTO of the watch movement.
- the kinematic connection consists of a driver 6 secured to an axis 7, the lower end of which comprises a pinion 12 engaged with a gear train 13 of the clockwork movement M forming the force driving the annual calendar mechanism.
- Coach 6 has two nozzles 14,15, diametrically opposite and each meshing successively with the teeth 16 of thirty-one teeth of the 8 days cog and the teeth truncated 19 of twenty-four teeth of the train of 9 months.
- Coach 6 makes a U-turn, a rotation of 180 ° per day in approximately twenty minutes between 23:40 and 24:00 each day under the action of the cogwheel 13 of the watch movement and the pinion 12 integral with axis 7 of coach 6.
- the cog 13 of the watch movement comprises 124 teeth and performs an angular displacement of 4 teeth each day and this toothing engages the pinion 12 having eight teeth.
- This cog 13 can be a conventional date crown, the periphery of which is provided a toothing or any other PTO actuated by movement clock making and allowing the rotational training of the trainer 6 at speed wanted.
- Each spout 14,15 of the coach 6 meshes with the teeth 16, of thirty and an 8-day cog wheel and thus advances it by one step per day.
- the train of days 8 still has a finger 18 whose action will be described later.
- the 9 month cog has a set of twenty-four teeth including some are truncated. This cog therefore has two teeth per month but all teeth are truncated, except those 19 corresponding to the end of a month of less than thirty-one days, i.e. the end of February, April, June, September and November, five teeth.
- the intermediate train 10 has a toothing 20 of twenty-four teeth engaged with all twenty-four teeth, truncated or not, of the cog month.
- the finger 18 of the train of days 8 cooperates with that of the teeth 20 of the intermediate gear 10.
- the angular position between each drive of this intermediate gear 10 is maintained by a jumper 21.
- the date display hand 1 is integral with the train for days 8.
- the thirtieth of each month the finger 18 of the cog of the days causes the intermediate train 10 to move in the direction of arrow F and therefore also the cog of the months with one step. This allows normal display of months from 31 days going from 30 to the first in two successive steps taken to 24 hours apart.
- the spout 14.15 first drives the cog of the 8 days of a step, causing the training of a step, by the cog intermediate 10 and therefore the train of the 9 months including a tooth 19 not truncated is placed on the path of this beak 14 or 15.
- this spout 14 or 15 causes the train of the months of a not by actuating the tooth 19 causing the drive of the intermediate train a second step in the direction of arrow F which drives the finger 18 of the train 8 days an additional step.
- This mechanism is very simple and clever, it has only four mobile with only teeth or fingers or beaks, therefore more simple to make. All these mobiles are located in the same plane which makes that the mechanism only takes a little height.
- the months of thirty-one days, the nozzle 14 or 15 of the coach does not not meet a tooth 19 of the month mobile and the needle successively displays on the 30th, 31st and 1st of the following month.
- the months of thirty days, the spout 14 or 15 does not only the cog of the 8 days, but also the cog of the 9 months of a step thus causing a two-step advance of the train of days 8, the position intermediate ( Figure 3) being only transient for a few minutes.
- the second embodiment of the illustrated annual calendar mechanism in Figures 5 to 11 is intended to cause a date display comprising a large window 30 whose dial 3 reveals two figures carried respectively by a tens disk 31 and a units disk 32 integral with the pinions 33,34 and pivoted in the plate 4.
- the annual calendar mechanism of this second embodiment has an 8 day cog, a 9 month cog and an intermediate cog 10 identical to those described with reference to the first embodiment.
- Coach 6 differs from that described above in that it has two pairs of spouts 14,15 and 14 ', 15' superimposed and offset angularly from 20 ° to 150 ° relative to each other.
- Nozzles 14.15 cooperate as before with the toothing 16 of the 8 day cog while the nozzles 14 'and 15' only cooperate with the non-truncated teeth 19 of the train of month 9. This allows for the months of thirty days to reduce the passage time from 30 to the 1st of the following month.
- the train of the 8 days is also modified compared to the first embodiment in that it includes a milling 35 on the space of two teeth of its teeth 16 and over at least half the height of this teeth 16.
- This display is here constituted by a large counter 30 practiced in the dial 3 and allowing to simultaneously see two digits, one carried by the disk of the units 32 and the other by the tens disk 31.
- the disc of the units 32 comprises the pinion 33 of ten teeth engaged with the upper half of the toothing 16 of the 8 day cog.
- it is driven step by step for thirty successive steps at a rate of one step per day then, if it is a month of 31 days, there are forty-eight hours without being trained, milling 35 avoiding its training, so that the number 1 remains in the display position two days in a row.
- a jumper 36 maintains the angular position of the disc of the 32 units between his workouts.
- the disc of the units has uniformly distributed around its circumference, arranged tangentially thereto, a series of numbers from 0 to 9 intended for indicate the unit of the date when it coincides with the right part of the large window 30 of the dial 3.
- the display also includes a tens disc 31 including the pinion 34 comprising ten teeth is driven step by step by an intermediate mobile of tens 37 himself stepped through the cogs of the 8 days by via a reference 38, the teeth of which mesh over the entire height of the toothing 16 of the day train.
- Reference 38 and therefore the intermediate mobile dozens 37 are driven step by step through the cog of 8 days without discontinuity.
- the intermediate mobile of the tens 37 has a toothing of 31 teeth all engaged with the reference 38. Most of the teeth of this toothing of the mobile intermediate are truncated, only five complete teeth 39 of this toothing mesh with the pinion 34 of the tens disc 31. These complete teeth 39 are positioned to drive the tens disc 31, the 4, the 9, the 19, 29 and 31 of each month. Thirty-day months like mobile intermediate is driven by two steps on the thirtieth of the month, the number 3 remains in display position only one day while the 31-day months this figure three is displayed for two consecutive days.
- This tens disc 31 performs a complete revolution in two months and has uniformly distributed over its circumference and arranged tangentially thereto, the following series of figures: 0,0,1,2,3,0,0,1,2,3.
- a jumper 40 maintains the angular position of the disc of tens between his successive training.
- Figures 6.7 8.9 and 10.11 illustrate the successive positions of the mechanism and its display when passing the 30 from one month to the 1st of the following month, the two display steps are carried out in a period of the order of 20 to 30 minutes.
- Variants of the described annual calendar mechanism can be envisaged in which the coach 6 would have only one beak provided that he is trained at 360 ° per day over a period of 20 to 30 minutes or respectively three nozzles driven at a rate of 120 ° per day.
- This coach drives the cog of the 8 days each step day and a step the cog of 9 months each month of thirty days causing so on the thirtieth of these months a second step from the cog of 8 days the intermediary of the intermediate train 10 and thus the passage of the display of 30 on the 1st of the following month.
- the third embodiment of the annual calendar mechanism illustrated in Figures 12 to 14 is intended to cause a date display comprising a traditional window 41 in the dial 3 revealing a number carried by a date crown 42 bearing the numbers from 1 to 31.
- the annual calendar mechanism of this third embodiment has an 8 day cog, a 9 month cog and an intermediate cog 10 identical to those described with reference to the previous embodiments.
- the date crown 42 is pivoted in the traditional way and is located between the dial and the date mechanism.
- This crown of date 42 has internal toothing 43 meshing with toothing 44 a date wheel 45 secured to a pinion 46 whose teeth are engaged with the toothing 16 of the day train.
- This date crown 42 is subjected to the action of a jumper 47 now its angular position between two drives thereof by the date wheel 45.
- the kinematic link causing the date mechanism from the watch movement includes, as in the previous embodiments, an axis 7 whose lower end carries a pinion 12 in engagement with the gear train 13 of the movement, but its end upper carries a drive wheel 48 engaged simultaneously with two wheels 49.50 pivoted on the board 4, each carrying two spouts 51.52; 51 ', 52' diametrically opposite.
- the reduction of the kinematic link is such that each of the 49.50 wheels rotates 180 ° per day in a lapse of time of approximately twenty minutes located between 11:40 p.m. and midnight.
- the spouts 51.52 drive the wheel of days 8 at the rate of one step per day. cooperating with its teeth 16, while the spouts 51 ', 52' cooperate with the teeth 19 not truncated of the train of months 9.
- this mechanism allows training step by step, one step per day from the 8 day wheel for the 31 day months and have a run second step to this 8 days wheel between the 30 and the 1st of a month of thirty days thanks to the month train 9 and the intermediate train 10.
- the toothing 16 of the 8-day gear train meshes with the pinion 46 secured to the date wheel 45.
- the date wheel 45 and the date crown 42 are driven one step.
- the cog of the 8 days is subjected to the action of a jumper 17 and the intermediate train is subjected to the action of a long necklace 21.
- This date mechanism is very simple, has only three cogs made up of easily movable toothing.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
Description
Claims (12)
- Mécanisme de quantième annuel pour mouvement d'horlogerie, caractérisé par le fait qu'il comporte :une liaison cinématique reliant un mobile (13) du mouvement d'horlogerie à un rouage des jours (8) et provoquant l'avance d'un pas par jour de ce rouage des jours (8) qui comporte une denture (16),un rouage des mois (9) comportant une denture formée de dents tronquées et de cinq dents complètes (19) correspondant aux mois de trente jours, ces dents complètes étant entraínées par la liaison cinématique, de sorte qu'à la fin du trentième jour des mois de trente jours cette liaison cinématique provoque successivement l'avance d'un pas du rouage des jours (8) et l'avance d'un pas du rouage des mois (9)un rouage intermédiaire (10) comportant une denture (20) en prise avec toutes les dents, tronquées ou complètes, du rouage des mois (9) et engrenant avec un doigt d'entraínement (18) solidaire du rouage des jours (8) de sorte que, d'une part, une fois par mois le rouage des mois (9) soit avancé d'un pas par l'intermédiaire du doigt (18) et du rouage intermédiaire (10) et que, d'autre part, chaque fois que la liaison cinématique engrène avec une dent complète (19) du rouage des mois (9) le rouages des jours (8) soit entraíné par le rouage intermédiaire (10) et le doigt (18) d'un second pas.
- Mécanisme selon la revendication 1, caractérisé par le fait que la denture (16) du rouage des jours (8) comporte 31 dents; que la denture du rouage des mois comporte au total vingt-quatre dents tronquées ou complètes; et que le rouage intermédiaire comporte une denture de vingt-quatre dents.
- Mécanisme selon la revendication 1 ou la revendication 2, caractérisé par le fait que la liaison cinématique comporte un axe (7) comportant à une de ses extrémités un pignon (12) en prise avec le mobile (13) du mouvement d'horlogerie et à son autre extrémité un entraíneur (6) comportant un ou plusieurs becs (14;15).
- Mécanisme selon l'une des revendications 1 à 3, caractérisé par le fait que le rouage des jours (8) porte une aiguille (1) coopérant avec une graduation de 31 jours (2) portée par le cadran (3) de la pièce d'horlogerie.
- Mécanisme selon l'une des revendications 1 à 3, caractérisé par le fait que le rouage des jours (8) comporte un fraisage (35) sur une partie de sa périphérie correspondant à l'étendue angulaire de deux de ses dents, dont la profondeur correspond sensiblement à la moitié de l'épaisseur de sa denture (20), cette partie incomplète de la denture (20) étant en prise avec un pignon (33) de dix dents portant un disque d'affichage des unités du quantième (32) comportant uniformément répartie le long de sa périphérie et tangentiellement à celle-ci une série de chiffres de 0 à 9.
- Mécanisme selon la revendication 5, caractérisé par le fait que l'emplacement du fraisage (35) est tel que les mois de trente jours le pignon (33) ne soit entraíné que sur un pas alors que le rouage des jours (8) est entraíné de deux pas.
- Mécanisme selon la revendication 6, caractérisé par le fait que le rouage des jours (8) entraíne un pignon (34) solidaire d'un disque d'affichage des dizaines de quantième (31) par l'intermédiaire d'un renvoi (38) et d'un mobile intermédiaire des dizaines (37) comportant une denture de trente et une dents; par le fait que le disque des dizaines (31) comporte répartie uniformément le long de sa périphérie et tangentiellement à celle-ci une série de chiffres 0,0,1,2,3,0,0, 1,2,3; par le fait que le disque des dizaines (31) est disposé tangentiellement à celui des unités (32); et par le fait qu'un guichet (30) pratiqué dans le cadran 3 laisse apparaítre un chiffre de chaque disque (31,32).
- Mécanisme selon la revendication 7, caractérisé par le fait que le mobile intermédiaire des dizaines (37) comporte une denture formée de cinq dents complètes (39) correspondant aux jours No 9,19,29,31 et à un jour compris entre le 1er et le 8ème, toutes les autres dents étant tronquées; et par le fait que seules les dents complètes (39) engrènent avec le pignon (34).
- Mécanisme selon l'une des revendications 3 à 8, caractérisé par le fait que l'entraíneur comporte une paire de becs (14,15) coopérant avec les dentures du rouage des jours (8) et du rouage des mois (9); l'entraíneur effectuant une rotation de 180° par jour dans un intervalle de temps inférieur à 30 minutes au voisinage de minuit.
- Mécanisme selon l'une des revendications 3 à 8, caractérisé par le fait que l'entraíneur comporte deux paires de becs (14,15; 14',15') situées à des niveaux différents coopérant l'un (14,15) avec la denture du rouage des jours (8) et l'autre avec la denture du rouage des mois (9); par le fait que ces paires de becs (14,15; 14',15') sont décalés angulairement d'un angle compris entre 20° et 150°, et par le fait que l'entraíneur effectue une rotation de 180° par jour dans un intervalle de temps inférieur à 30 minutes au voisinage de minuit.
- Mécanisme selon l'une des revendications 1 ou 2, caractérisé par le fait que la liaison cinématique comporte un axe (7) portant à son extrémité inférieure un pignon (12) en prise avec le mobile (13) du mouvement d'horlogerie et à son extrémité supérieure une roue d'entraínement (48) en prise avec deux roues (49,50) solidaires chacune d'au moins un bec d'entraínement (51,51'); et par le fait que le bec (51) de la roue (49) entraíne à raison d'un pas par jour le rouage des jours (8) tandis que le bec (51') de l'autre roue (50) coopère avec les dents complètes (19) seulement de la denture du rouage des mois (9).
- Mécanisme selon la revendication 11, caractérisé par le fait que le rouage des jours engrène encore avec un pignon (46) d'une roue de quantième (45) dont la denture (44) entraíne pas à pas une couronne de quantième (42) par sa denture intérieure (43) comportant trente-et-une dents; et par le fait que cette couronne de quantième (42) porte sur sa face supérieure une série de chiffres de 1 à 31 apparaissant successivement dans un guichet (41) du cadran du mouvement d'horlogerie.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH221198A CH692538A5 (fr) | 1998-11-03 | 1998-11-03 | Mécanisme de quantième annuel. |
CH221198 | 1998-11-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0999482A2 true EP0999482A2 (fr) | 2000-05-10 |
EP0999482A3 EP0999482A3 (fr) | 2001-03-28 |
EP0999482B1 EP0999482B1 (fr) | 2007-11-14 |
Family
ID=4228479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99120775A Expired - Lifetime EP0999482B1 (fr) | 1998-11-03 | 1999-10-20 | Mécanisme de quantième annuel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0999482B1 (fr) |
JP (1) | JP4435344B2 (fr) |
CH (1) | CH692538A5 (fr) |
DE (1) | DE69937532T2 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2847992A1 (fr) * | 2002-12-02 | 2004-06-04 | Technotime Holding S A | Mecanisme d'affichage de quantieme pour une piece d'horlogerie |
EP1666991A1 (fr) * | 2004-12-02 | 2006-06-07 | ETA SA Manufacture Horlogère Suisse | Mecanisme de quantieme annuel pour piece d'horlogerie |
US8284632B2 (en) | 2009-09-07 | 2012-10-09 | Seiko Instruments Inc. | Calendar mechanism equipped timepiece including two date indicators |
CH707959A1 (fr) * | 2013-04-24 | 2014-10-31 | Christophe Claret Sa | Système d'entraînement d'un indicateur de quantième. |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60132602T2 (de) * | 2001-11-30 | 2008-08-28 | Rolex Sa | Kalendermechanismus für eine Uhr |
CH700720B1 (fr) * | 2003-06-23 | 2010-10-15 | Ronda Ag | Engrenage pour mouvement de montre et mécanisme d'affichage du quantième muni d'un tel engrenage. |
JP4626972B2 (ja) * | 2004-12-22 | 2011-02-09 | セイコーインスツル株式会社 | 第一日車と第二日車とを含むカレンダ機構付き時計 |
CH707467B1 (fr) * | 2005-09-13 | 2014-07-15 | Lvmh Swiss Mft Sa | Montre avec affichage multifonctionnel. |
JP5615733B2 (ja) * | 2011-02-22 | 2014-10-29 | セイコーインスツル株式会社 | ビッグデイト表示機構及び該機構を備えた時計 |
EP3629101B1 (fr) | 2018-09-26 | 2022-04-20 | Patek Philippe SA Genève | Mécanisme d'affichage horloger |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5432759A (en) * | 1993-07-15 | 1995-07-11 | Compagnie Des Montres Longines, Francillon S.A. | Annual calendar mechanism for a timepiece |
US5699321A (en) * | 1995-07-28 | 1997-12-16 | Compagnie Des Montres Longines, Francillon S.A. | Annual calendar mechanism for a timepiece |
GB2323185A (en) * | 1997-03-10 | 1998-09-16 | Souza Paul Gerard D | Perpetual calendar mechanism for clocks watches and timers |
-
1998
- 1998-11-03 CH CH221198A patent/CH692538A5/fr unknown
-
1999
- 1999-10-20 EP EP99120775A patent/EP0999482B1/fr not_active Expired - Lifetime
- 1999-10-20 DE DE1999637532 patent/DE69937532T2/de not_active Expired - Lifetime
- 1999-11-04 JP JP31339199A patent/JP4435344B2/ja not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5432759A (en) * | 1993-07-15 | 1995-07-11 | Compagnie Des Montres Longines, Francillon S.A. | Annual calendar mechanism for a timepiece |
US5699321A (en) * | 1995-07-28 | 1997-12-16 | Compagnie Des Montres Longines, Francillon S.A. | Annual calendar mechanism for a timepiece |
GB2323185A (en) * | 1997-03-10 | 1998-09-16 | Souza Paul Gerard D | Perpetual calendar mechanism for clocks watches and timers |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2847992A1 (fr) * | 2002-12-02 | 2004-06-04 | Technotime Holding S A | Mecanisme d'affichage de quantieme pour une piece d'horlogerie |
EP1426836A2 (fr) | 2002-12-02 | 2004-06-09 | Technotime Holding S.A.- | Mécanisme d'affichage de quantième pour une pièce d'horlogerie |
EP1426836A3 (fr) * | 2002-12-02 | 2008-07-30 | Technotime Holding S.A.- | Mécanisme d'affichage de quantième pour une pièce d'horlogerie |
EP1666991A1 (fr) * | 2004-12-02 | 2006-06-07 | ETA SA Manufacture Horlogère Suisse | Mecanisme de quantieme annuel pour piece d'horlogerie |
US7301854B2 (en) | 2004-12-02 | 2007-11-27 | Eta Sa Manufacture Horlogere Suisse | Annual calendar mechanism for timepiece |
US8284632B2 (en) | 2009-09-07 | 2012-10-09 | Seiko Instruments Inc. | Calendar mechanism equipped timepiece including two date indicators |
CH707959A1 (fr) * | 2013-04-24 | 2014-10-31 | Christophe Claret Sa | Système d'entraînement d'un indicateur de quantième. |
Also Published As
Publication number | Publication date |
---|---|
DE69937532T2 (de) | 2008-09-04 |
EP0999482A3 (fr) | 2001-03-28 |
JP2000147148A (ja) | 2000-05-26 |
CH692538A5 (fr) | 2002-07-15 |
EP0999482B1 (fr) | 2007-11-14 |
JP4435344B2 (ja) | 2010-03-17 |
DE69937532D1 (de) | 2007-12-27 |
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