Abstract: A display device and a timepiece calendar device capable of large display of letters and numbers is provided, which can be simplified and reduced in size. The display device comprises a first display wheel having a denotation portion for showing information about a part of a period and a toothed portion including a plurality of teeth to be driven. The device also has a second display wheel having a denotation portion for showing a part of the period other than the part of the period shown by the first display wheel, an opening via which the first display wheel is exposed, and a toothed portion including a plurality of teeth to be driven, and placed overlapping the first display wheel. The device also has a driving finger for driving the first display wheel and the second display wheel to rotate.

Abstract: The present invention aims to provide a watch with a calendar mechanism which allows a reduction in the thickness of a date feeding mechanism and a month feeding mechanism. In a watch with a calendar mechanism according to the present invention, a date indicator includes a month end tooth for driving a month feeding lever at the end of a month and feeding the date indicator at the end of a shorter month. A month indicator includes a month cam for operating a shorter month end feeding lever at the end of a shorter month. The shorter month end feeding lever can feed the date indicator by one day based on the rotation of a date indicator driving wheel and the rotation of the month cam. The month feeding lever moves toward the month indicator at the end of a month based on the rotation of the date indicator, and can feed the month indicator by one month.

Abstract: Day of the month display mechanism for watch movement, comprising two mobiles (1), each bearing a sequence of digits (10). The two mobiles are disposed in such a manner that, at least for certain dates, the day of the month (3) displayed to the user corresponds to the combination of indications borne by the first mobile (1) and of indications borne by the second mobile (2), whilst for other dates, the day of the month (3) corresponds to the combination of two digits borne by the same mobile (2). The second mobile (2) is driven by the first mobile (1) through a star wheel (50) held by a jumper (51) to prevent the undesired rotation of said star. A banking element (511) is arranged in a manner to prevent said jumper from passing directly from one tooth (501) of the star to a non-adjacent tooth when the date changes.

Abstract: The perpetual calendar mechanism includes a date mobile (16, 28-31), a date lever (3) bearing a small click (14), a correction lever (4) driving a great click (40) and a finger (2) driving the levers (3, 4). The date mobile (16, 28-31) is shifted instantaneously by the small click (14) during the transition from one day to the next within a month and during the transition from the last day of a month of 31 days to the first day of the following month, and partly in a dragging manner by the great click (40) during the transition from the last day of a month of less than 31 days to the first day of the following month.

Abstract: The large date mechanism comprises three superposed indicator discs (1, 2, 3). The lower disc (3) bears eleven numerals (8) and the upper (1) and intermediate (2) discs each bear ten numerals (4, 6) and a window (5, 7). Each of the discs is integral to a star wheel (12, 13, 14) with cannon pinions (9, 10, 11). The cannon pinion star wheels are selectively driven by a control movement (15) comprising three toothed sectors (19, 18, 17) integral to a calendar day wheel (16) that advances one step per day. The mechanism can be supplemented by a safety device ensuring blocking of the star wheels when they should be stationary.

Abstract: Date mechanism (1) for a timepiece, including: at least first (2) and second (3) date rings, rotatably mounted relative to each other, said rings having one surface provided with successive date markings (24, 34), the first date ring (2) having a display window (21), arranged between two successive markings, the first date ring (2) being superposed on the second date ring (3), each of said two date rings (2, 3) having teeth (22, 32) distributed on the periphery thereof, each tooth being associated with a respective marking (24, 34) or with the display window (21); a control wheel (4) for the first and second date rings (2, 3); characterized in that the control wheel (4) is provided with first (41) and second (42) superposed tiers of toothings, each toothing tier including one portion provided with adjacent teeth and one tooth-free portion, the tooth-free portion of one tier being arranged vertical to the toothed portion of the other tier, one tooth of the first tier (41) being superposed on one tooth o

Abstract: A timepiece includes a dial having a tens date display window for displaying the tens digit of the date, and a ones date display window for displaying the ones digit of the date; and a calendar mechanism having a tens indicator wheel to which a plurality of tens digit markers are disposed and a ones indicator wheel to which a plurality of ones digit markers are disposed, and which displays one of the plural tens digit markers disposed to the tens indicator wheel from the tens date display window, and displays one of the plural ones digit markers disposed to the ones indicator wheel from the ones date display window. The ones indicator wheel has a ones indicator plate on which the ones digit markers are disposed, and a ones indicator pinion affixed to the ones indicator plate. The tens indicator wheel has a tens indicator plate on which the tens digit markers are disposed, and a tens indicator pinion affixed to the tens indicator plate.

Abstract: The mechanism includes a display member (10) fitted with a toothing (14) mounted so as to move in rotation, a drive wheel set (39) mounted so as to move in rotation, including a cam (40) and a finger (24), wherein the finger is secured in rotation to the cam to make a finger-cam assembly and the finger cooperate with the toothing to drive the display member by steps, and a spring (38) cooperating at least indirectly with the cam, wherein the cam is arranged for pivoting, the finger-cam assembly, via the slackening action of the spring, so as to drive the display member through one step. The cam is further arranged for pivoting the finger assembly, via the slackening action of the spring, so as to release the finger from the toothing after the finger cam assembly has driven the display member through one step.

Abstract: A display device and a timepiece calendar device capable of large display of letters and numbers is provided, which can be simplified and reduced in size. The display device comprises a first display wheel having a denotation portion for showing information about a part of a period and a toothed portion including a plurality of teeth to be driven. The device also has a second display wheel having a denotation portion for showing a part of the period other than the part of the period shown by the first display wheel, an opening via which the first display wheel is exposed, and a toothed portion including a plurality of teeth to be driven, and placed overlapping the first display wheel. The device also has a driving finger for driving the first display wheel and the second display wheel to rotate.

Abstract: An electronic timepiece with a calendar display function that drives a piezo-electric actuator to drive a rotation of a piezo-electric rotor, and stops the drive of the piezo-electric actuator when the amount of the piezo-electric rotor advances is detected by a spring switch. Photoreflectors are used for day detection accomplished using gears having a small speed reduction ratio relative to the piezo-electric rotor, and spring switches are used in month detection and year detection.

Abstract: A timepiece with calendar function including a dial having a tens digit display aperture for displaying the tens digit of the date and a ones digit display aperture for displaying the ones digit of the date, and a calendar mechanism that displays the date by presenting specific numerals through the dial. The calendar mechanism includes a ones display wheel having ones markers whereby the ones digit is displayed through the ones digit display aperture, a tens display wheel having tens markers whereby the tens digit is displayed through the tens digit display aperture, a ones drive mechanism that drives the ones display wheel, and a tens drive mechanism that drives the tens display wheel. The tens markers include normal tens markers that display only the tens digit in the tens digit display aperture, and a two-digit display marker that displays a tens digit in the tens digit display aperture and a ones digit in the ones digit display aperture.

Abstract: A drive wheel for integration into a clock movement, in particular into the clock movement of wristwatches, with at least a dented section by whose teeth a downstream wheel is rotatably drivable and at least a non-dented section which has a diameter chosen in such a manner that the part-circular circumference of the drive wheel in the non-dented section blocks the downstream wheel against rotation while the teeth of the downstream wheel face this section. The non-dented section of the drive wheel includes at least a flexible element that is arranged, seen in the direction opposite to the direction of rotation of the drive wheel, immediately after the dented section and that includes an elasticity essentially directed in radial direction of the drive wheel for the change of the diameter of the non-dented section of the drive wheel in the range of the flexible element.

Abstract: Watch provided with a multifunctional aperture display capable of displaying symbols corresponding to one or several special functions and to the date. The movement of the display discs is ensure by bidirectional motors and the display discs or mobiles have several series of digits of different colour for differentiating the display of the different functions.

Abstract: To provide a calendar mechanism-attached timepiece having a thin date feeding mechanism and month feeding mechanism. A calendar mechanism-attached timepiece of the invention includes a date indicator, a month indicator, a date indicator driving wheel, a date feed finger, and a small month end feed lever. The date indicator includes a month feed tooth for rotating an intermediate month wheel and a small month end feed tooth for feeding the date indicator at a month end of a small month. The month indicator includes a month cam for operating a small month end feed lever at a month end of a small month. The small month end feed lever is constituted to be able to feed the date indicator by an amount of 1 day based on rotation of the date indicator driving wheel and rotation of the month cam.

Abstract: The invention concerns an annual calendar mechanism, including: a date ring including a lug and 31 teeth, and a date wheel set arranged for rotating the date ring through one step per day, an intermediate wheel set cooperating with the lug such that the date wheel set drives the intermediate wheel set through a first step when the date passes from the 30th to the 31st of the month, via the date ring, an annual wheel set meshed with the intermediate wheel set and cooperating with the date wheel set, the date, intermediate and annual wheel sets being arranged such that the date wheel set drives the intermediate wheel set through a second step when the date passes from the 31st to the 1st of the month, for the months of 31 days, via the date ring, and such that the date wheel set drives the intermediate wheel set through a second step after the date has passed from the 30th to the 31st of the month, for the months of less than 31 days, via the annual wheel set, the intermediate wheel set then driving the date

Abstract: A timepiece with calendar mechanism has a time indicator that indicates time by undergoing rotation in accordance with a driving operation of a drive mechanism, and first and second separate and independent date indicators each having date characters and each mounted to undergo intermittent rotation so that combinations of the date characters of the first and second date indicators indicate a units numeral of a date. A third date indicator has date characters and is mounted to undergo rotation for indicating a tens numeral of the date. A program wheel intermittently rotates the first, second and third date indicators in accordance with a driving operation of the drive mechanism.

Abstract: It is made possible to display a time instant and a reception sensitivity even during a standard radio signal is received, without adding a special constitution as much as possible. A reception circuit receives and outputs a time code included in the standard radio signal, through an antenna, and a control circuit corrects a time instant being clocked to a time instant corresponding to the time code. In a case where the reception sensitivity of the standard radio signal is displayed, the control circuit judges the reception sensitivity of the standard radio signal on the basis of the time code from the reception circuit, and controls such that, by rotation-controlling a date indicator by referring to a reception sensitivity versus date indicator position correspondence table, the reception sensitivity is displayed by date letters of the date indicator and a time instant display is performed by time instant hands.

Abstract: The secular perpetual calendar comprises an additional mechanism (4 to 13) integrated in a conventional perpetual calendar mechanism comprising a last wheel (13) making one revolution in 400 years, this wheel (13) carrying a cam (13?) of which the steps cooperate with a lever (9) on which pivots a wheel (6) which carries a satellite (7?) on which is attached the February cam (7) and the cam (13?), which makes one quarter turn every century, presenting three low steps enabling the lever (9) to move back in such a way that the cam (7) on which the multiple lever (2) will press is in the same position as for a conventional 28-day month of February three times in succession for the years 2100, 2200 and 2300, and then a high step to restore the 29th of February of the year 2400.

Abstract: The invention is a timepiece calendar mechanism for displaying the date and the day of the week, including a date indicator in the form of an internally toothed crown. The date indicator is driven by a first drive wheel having an external toothing so as to be able to be driven about an axis of rotation by a wheel set secured to an hour wheel of the timepiece. The toothing includes a prominent tooth, longer than the others, which abuts against a tooth of the inner toothing of the date indicator to move it forward one day in a time interval located around a determined time of the day. The mechanism also includes a day of the week indicator that moves forward one day during the time interval.

Abstract: The inventive timepiece provided with a date dial comprises a date disc driven step by step once per 24 hours. The dial of the time piece is provided with unit figures distributed along a circular sector and crossed by a window which is embodied in the form of a circular arc and extends through the entire angular length of the circular sector. A display member connected to the date disc appears in the window and comprises an index of units, FIGS. 1 and 2 of tens and a window for FIG. 3 of tens. A screen associated to a return spring is positioned between the dial and the display member provided with an element for driving the movable screen oppositely to the return spring in order to position it in front of the index when said index is situated in front of the FIG. 0 of units.

Abstract: A date display mechanism has a first driving wheel that rotationally drives a first date indicator for displaying places of units and a second driving wheel that rotationally drives a second date indicator for displaying places of tens. The second driving wheel causes the second driving wheel to rotate by one tooth when the date shifts from a 9th day to a l0th day, from a 19th day to a 20th day, and from a 29th day to a 30th day. A program wheel performs one revolution in 31 days and controls rotation of the first date indicator and the second date indicator so that from the 1st day to the 31st day, the first date indicator is rotated by one tooth every day, and so that when the date shifts from the 31st day to 1st day, the first date indicator is retained to a position of the 31st day and the second date indicator is rotated by one tooth to thereby cause the 1st day to be displayed by the date display window.

Abstract: A calendar date display comprises a ten-day indicator (2) and a unit indicator (1) driven by a program drive (8), which is provided with a calendar date display (9) whose toothing is engaged with the beak (15) of a lever (16) in such a way that a wheel is moved one step forward by one date number change. Between each calendar number change, the beak (15) is engaged between the first and second teeth (11, 12) of the wheel (9). At the time of the calendar number change, the beak (15) is disengaged from said first and second teeth (11, 12) in such a way that it is engaged between the second and third (12, 13) teeth of the wheel (9), thereby moving said wheel one step forward.

Abstract: A timepiece with a calendar mechanism has a drive mechanism and a time display wheel that undergoes rotation by an operation of the drive mechanism to display time information. A first date indicator is mounted to undergo intermittent rotation to display the ones place of a date. A second date indicator is mounted to undergo intermittent rotation to display the tens place of the date. A program gear wheel intermittently rotates the first and second date indicators in accordance with operation of the drive mechanism. The program gear wheel has a first program tooth disposed on an outer peripheral part of the program gear wheel for intermittently rotating the first date indicator and a second program tooth disposed in an inner peripheral part of the program gear wheel for intermittently rotating the second date indicator.

Abstract: The invention relates to an electronic timepiece comprising manual control means (21, 23) for the selection of different modes and an analog display provided with indicators (26, 27, 28, 32, 34) moved separately by electric motors to indicate the time on a dial (22) in a time mode and other information in one or more other modes, said indicators comprising at least an hour hand (26), a minute hand (27), a day indicator (32) and a month indicator (34). In addition, at least one of the modes to be selected is an event indication mode, in which the Gregorian date of a movable event is delivered by the electronic circuits of the timepiece and is displayed at least by the day indicator (32) and month indicator (34), said timepiece having means for the display of the number of the Gregorian year.

Abstract: A display assembly for displaying information in an electronic device comprising a first rotateable ring having a first occurrence indicator thereon; a second rotateable ring having a second occurrence indicator thereon; means for rotating the first rotateable ring so as to selectively position the first occurrence indicator; and rotating the second rotateable ring so as to selectively position the second occurrence indicator; whereby the position of the first occurrence indicator corresponds to a scheduled occurrence of a first occurrence and the position of the second occurrence indicator corresponds to a scheduled occurrence of a second occurrence.

Abstract: The movement (10) includes at least one display ring (12, 14) which is rotatably mounted on a bottom plate (16) and which carries markings that will appear in a display zone (22). The ring (12, 14) is fitted with an inner peripheral toothing (24, 26) which cooperates with drive means (20) and which cooperates with a jumper spring (32, 34). The jumper spring (32, 34) is drawn towards the radial abutment position by an elastic return element (40, 42). A holding plate (48) is secured on the bottom plate (16) so as to retain the jumper spring (32, 34) axially. The holding plate (48) is secured on the bottom plate (16) by a bayonet type assembly. The holding plate (48) includes at least one winding member (58) which cooperates with the stop device (32, 34) during the pivoting of the holding plate (48) from the non fixed angular position thereof to the fixed angular position thereof, so as to arm the associated elastic return element (40, 42).

Abstract: Timepiece component (1) having a grande date display wherein the two discs are actuated independently from one another by stepping motors. The date's tens are displayed differently, for example in another color, in the morning and in the afternoon. It is also possible to combine the date indications with other independent indications.

Abstract: The inventive mechanism comprises a series of toothed wheels meshing each with other or by groups and driven by a mobile which is connected to a basic timepiece movement by means of a mobile, wherein each toothed wheel is superimposed by a plate or disc carrying figures or signs and rotating in a corresponding bore of the timepiece dial.

Abstract: There is realized a multifunction timepiece constituted to be able to constitute a plurality of types of hand operating train wheels by only changing positions of integrating parts without changing dimensions and shapes of parts of a movement. A movement of a multifunction timepiece includes a first train wheel rotation center, and a second train wheel rotation center. A train wheel for indicating calendar information is arranged to be rotatable relative to one of the first train wheel rotation center, and the second train wheel rotation center. When the first train wheel rotation center is arranged with a train wheel for indicating calendar information, the calendar information can be indicated by a small hand rotated to move by the train wheel, when the second train wheel rotation center is arranged with a fan shape hand operating train wheel for indicating the calendar information, the calendar information can be indicated by a small hand moved in a fan shape operating train wheel.

Abstract: The invention relates to an instantaneous mechanism for controlling the date indicator (24) of a timepiece movement. It comprises: a 24-hour wheel (10) pierced with a first cutout (12b), a date driving wheel (16) mounted to rotate freely on the 24-hour wheel (10), coaxial therewith and having a pin (18) which fits into the cutout and a tooth (20) which collaborates with the indicator (24) to cause it to move on step by step each day at around midnight, and a spring balance (26, 32) collaborating with the pin (18). These components are shaped, sized and arranged in such a way that, at around midnight, the balance (26) escapes from the pin (18) and returns abruptly to its rest position, throwing forward the pin (18) and the driving wheel (16) whose tooth (20) strikes the date indicator (24) to cause it to move on by one step.

Abstract: Gear for day of the month display mechanism in a watch movement, including: a driving organ (1), a driven organ (50), characterized in that said driving organ (1) is provided with z1 first teeth (120) and z2 second teeth (121), the height of the second teeth (121) being lower than the height of the first teeth (120), and in that said driven organ (50) is provided with z3 third teeth (501) and z4 fourth teeth (503), the height of the third teeth (501) being greater than the height of the fourth teeth (503), the height of the z1 first teeth (120) allowing the z3 third teeth (501) as well as the z4 fourth teeth (503) to be driven, the height of the z2 second teeth (121) allowing however only the z3 third teeth (501) but not the z4 fourth teeth (503) to be driven.

Abstract: The invention concerns an annual calendar mechanism, including: a date ring (10) including a lug (30) and 31 teeth (32), and a date wheel set (12) arranged for rotating the date ring (10) through one step per day, an intermediate wheel set (16, 56) cooperating with said lug (30) such that the date wheel set (12) drives the intermediate wheel set (16) through a first step when the date passes from the 30th to the 31st of the month, via the date ring (10), an annual wheel set (14) meshed with the intermediate wheel set (16) and cooperating with the date wheel set (12), said date (12), intermediate (16) and annual (14) wheel sets being arranged such that said date wheel set (12) drives the intermediate wheel set (16) through a second step when the date passes from the 31st to the 1st of the month, for the months of 31 days, via the date ring (10), and such that said date wheel set (12) drives the intermediate wheel set (16) through a second step after the date has passed from the 30th to the 31st of the month, f

Abstract: This date display for a timepiece, comprising two side by side indicator disks (1, 2), one (1) bearing the figures for the units, the other (2) those for the tens, the two side by side figures of the two respective disks (1, 2) appearing in a window (3) provided through a time indicator dial. These two disks (1, 2) are transparent and the surface (4) subjacent to said disks (1, 2), appearing in said window (3) and through said disks (1, 2), is of a contrasting color relative to that of said figures.

Abstract: The present invention relates to a drive wheel (10) for integration into a clock movement, in particular into the clock movement of wristwatches, with at least a dented section (11) by whose teeth (12) a downstream wheel (20) is rotatably drivable and at least a non-dented section (13) which has a diameter chosen in such a manner that the part-circular circumference of the drive wheel (10) in the non-dented section (13) blocks the downstream wheel (20) against rotation while the teeth (21) of the downstream wheel (20) face this section. The non-dented section (13) of the drive wheel (10) comprises at least a flexible element (14) that is arranged, seen in the direction opposite to the direction of rotation of the drive wheel (10), immediately after the dented section (11) and that comprises an elasticity essentially directed in radial direction of the drive wheel (10) for the change of the diameter of the non-dented section (13) of the drive wheel (10) in the range of the flexible element (14).

Abstract: The invention concerns a lunar month display mechanism, for a lunisolar calendar mechanism. The mechanism includes concentrically a plate, which determines the position of the additional month in the bissextile years. The plate is provided with a hand associated with a scale of twelve months and carries a planetary wheel permanently braked by a restraining device. The drive wheel, driven over one twelfth of a revolution at each new moon, meshes with the planetary wheel and moves the plate and hand forward. At the start of a bissextile month, the stop fingerforces the wheel to rotate overcoming the force of the restraining device while the drive wheel is rotating, such that the hand remains close to the number of the preceding month. The position of the stop finger is determined by a year cam. This mechanism can be used in particular in a Chinese calendar display.

Abstract: The annual calendar mechanism comprises a drive wheel set (1) fitted with a first finger (2) driving a date disc (4) through one step once a day and a second finger (5) driving a plate (6) secured to an annual wheel (7) arranged coaxially to the date ring at the end of the months of less than thirty one days. An intermediate wheel (8) connects the annual wheel (7) to the date ring (4) at the end of each month. The annual wheel (7) comprises twice as many teeth (30) as there are months in a year and the intermediate wheel (8) comprises a first wheel (40) meshed with the annual wheel (7) and a second wheel (50) fixed to the first wheel, said second wheel being meshed, at the end of each month, with a snug (60) arranged inside the date ring (4).

Abstract: A date display assembly for an electronic device, the assembly comprising a ones date ring assembly, a tens date disc assembly and a gear assembly comprising a four-legged blocking star and a four-legged driving star, wherein the driving star is used for driving the tens disc and the blocking star is used to maintain the proper orientation of the tens disc.

Abstract: A timepiece, includes a Chinese calendar display device indicating lunar date and lunar month, taking account of bissextile months, and: a control lever actuated each day by a drive wheel of the timepiece movement; a lunar month indicator associated with a month star-wheel; a lunar date indicator associated with a date wheel set including a date wheel moved forward one step each day by the control lever, a lunar month length indicator coupled to a selector, having two positions manually controlled and alternately defining two different stop positions for the lever, respectively corresponding to a long month and to a short month, the control lever moves the date wheel forward one extra step at the end of short months; and a month indicator coupled to a bissextile month selector, having two positions manually controlled and that moves the month star—wheel back one step at the start of bissextile months.

Abstract: A device for the date indication in a watch, with a digit disk and a decimal disk, which each include a sequence of figures or numbers and are arranged next to each other in parallel in such a manner that they overlap within the region of an indicating position and thus allow to represent a two digit number visible through a corresponding date window in the dial. The disk of larger diameter is a circular disk and the axis of rotation of the disk of smaller diameter is arranged within the outer peripheral contour of the disk of larger diameter. The device includes a digit programme wheel and a decimal programme wheel, which control via a digit pinion and a decimal pinion the switching operation of the digit disk and the decimal disk, and a programme drive wheel, which passes on the driving force onto the digit and decimal programme wheels.

Abstract: To provide a structure capable of performing a correction which surely and easily turns a date display back by rotating a 1st date indicator and a 2nd date indicator in both positive and reverse directions. A timepiece with a calendar mechanism possesses a 1st date indicator, a 2nd date indicator, and a date intermediate wheel which rotates the 2nd date indicator by a rotation of the 1st date indicator. Calendar shift teeth of the 1st date indicator possess a positive rotation unlocking part and a reverse rotation unlocking part.

Abstract: To provide a timepiece with a calendar mechanism in which a component working is easy and a movement is thin. A movement of a timepiece with a calendar mechanism possesses a 1st date indicator displaying a place of one out of a date, and a 2nd date indicator displaying a place of ten out of the date. A program gear wheel is constituted so as to be capable of intermittently rotating respectively the 1st date indicator and the 2nd date indicator on the basis of an operation of a drive mechanism. In the invention, by using a ring-like program gear wheel, it is possible to rotate the 1st date indicator and the 2nd date indicator. A rotation center axis of the 2nd date indicator is located in an outside of the 1st date indicator, and located in an inside of the program gear wheel. An information relating to a day is displayed by a 1st day letter of the 1st date indicator and a 2nd day letter of the 2nd date indicator.

Abstract: This mechanism comprises a date runner, a months satellite with five teeth on a pitch for twelve, secured to the date runner, a fixed planetary toothset and a drive member for driving the date runner comprising two drive fingers, the first intersecting the path of the toothset of the date runner, the second intersecting the path of the toothset of the months satellite. The latter is connected to the planetary toothset by a second satellite secured to it and the number of teeth of which is equal to a multiple of twelve, the number of teeth of the planetary toothset being chosen so that one of the five teeth of the months satellite is aligned with the axes of the satellites, of the drive member and of the date runner on the 30th of each month comprising less than 31 days.

Abstract: A time display device (“TDD”)—equally adaptable to watches, clocks, computers, phones, and vehicles—indicates the current hour of the day by displaying a color that refers an observer to the disclosed color-to-hour matrix, thereby eliminating the traditional hour hand or digit altogether. Alternately adaptable to months, the system may be used with both mechanical and electronic displays. Various disclosed minute indicators provide minute indication by shape, complexity, company logo, air bubbles, or other novel methods. Environmental sensors allow switching between functions. TDD appearance is user-customizable via Internet. Birthstones, gemstones, and precious metals are alternately used as stand-alone time indicators.

Abstract: The invention concerns an annual calendar mechanism for a timepiece including a date disc (16) to which are thirty one figures are affixed each corresponding to an indication of a day of the month provided with a first inner toothing (20) including thirty one teeth (20a), a date drive wheel set (32), said wheel set (32) including a finger (34) driving the date disc (16) through one step per day via one of the teeth (20a) of the first inner toothing (20) in order to control the date display, said date disc (16) including a second toothing (24), a correction drive wheel set (42) able to cooperate with the second toothing (24) to drive the date disc (16) through an additional step at the end of the months of less than thirty one days, and a month star wheel (54) arranged to be actuated at the end of each month and to complete one revolution per year, characterized in that in includes a month drive wheel set (52) provided for driving the month star wheel (54) at the end of each month, said drive wheel set (52) be

Abstract: Embodiments of the present disclosure relate to a timepiece and a mechanism to be used with the timepiece for indicating the date and the day of the present time. In one embodiment, a timepiece may include a dial, indications of seven days of a week inscribed on the dial, and an aperture pierced through the dial and being sized to allow seven dates of a month to appear adjacent the indications on the dial. A mechanism for indicating the date and the day may include a date indicator bearing a series of dates from 1 to 31, a first member configured to cause the date indicator to move by seven days on each Sunday at about midnight, a date corrector bearing a series of dates from 1 to 6 and arranged in such a way that the date corrector can be partially superposed on the date indicator, and a second member configured to cause the date corrector to move in such a way that, at the end of a month having less than 31 days, the date corrector automatically hides incorrect dates and replaces them with its own dates.

Abstract: A timepiece equipped with a calendar mechanism has a first date indicator for displaying the units numeral of the date, a first date jumper for setting a position of the first date indicator in a rotation direction, a second date indicator for displaying the tens numeral of the date, a second date jumper for setting a position of the second date indicator in a rotation direction, and a date intermediate wheel for undergoing rotation in accordance with rotation of the first date indicator to thereby rotate the second date indicator. The first date indicator has a first date character display surface including 31 numerals “1”, “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, “0”, “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, “0”, “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, and “0”. The second date indicator has a first date character display surface including four numerals “1”, “2”, “3”, and “0”, or a second date character display surface including three numerals “1”, “2”, and “3”.

Abstract: This date mechanism comprises a calendar mobile (1), a driving mobile (3) an instantaneous-jump cam (7), a finger (9b) kinematically connected to this cam (7) in order to drive the calendar mobile (1). The driving finger (9b) is borne by a release member (9) which is mounted pivotably about two axes (3a, 7a), one (3a) of which is that of the driving mobile (3), this release member (9) having an opening (9a) configured to allow an angular displacement about the second of these two axes (7a), whereby the driving finger (9b) can be released from the toothing (1a) of the calendar ring while the calendar is corrected. A return spring (8) tends to rotate the driving finger (9b) about the second pivot axis (7a) in order to bring it to butt against an edge of the opening (9b), a position in which the driving finger is engaged with the toothing of the calendar ring (1).

Abstract: A calendar stepping mechanism of an eternal calendar of a clock includes a month disk with indentations and elevations corresponding to forty-eight months of a leap year period and a calendar wheel having 31 teeth with one stepping tooth and normal teeth for driving a calendar date display. A stepping lever is pivoted once a day and has a probe finger that rests on the month disk in a normal position of the stepping lever.

Abstract: Date system for a horological movement comprising a tens disc (2) connected to a star wheel (4) driven by a first drive device (12), and a units disc (1) driven by a second drive device (13). The said drive devices (12, 13) are connected to a rocker (9) which works with cams (10, 11) connected to a driving runner (5), which effects one rotation per month. These cams (10, 11) are provided with a tooth (20) and a notch (21) which keep the first drive device (12) in the disengaged position until the tooth (20) and the notch (21) actuate the said rocker (9) in order to engage and disengage the respective drive devices (12, 13) in such a way as to move the display from the 31st to the 1st of the month without an error of one day between the date indicated and the actual date.

Abstract: An electronic device comprising a display assembly comprising a dial having a viewing window, the electronic device comprising a first rotateable ring having a plurality of dates thereon; a second rotateable ring having an extending portion that overlies the first ring, wherein the extending portion has a plurality of dates thereon; means for rotating the first rotateable ring so as to cause a selected subset of the plurality of dates to be positioned within in the viewing window; and rotating the second rotateable ring so as to cause a selected subset of the plurality of dates to be visible in the viewing window; wherein the overlying of the extending portion of the second rotateable ring over the first rotateable ring causes dates of the first rotateable ring positioned in the viewing window to be non-viewable in the viewing window; and selected rotation of the first and second rotateable rings causes different subsets of the respective plurality of dates on the respective rotateable rings to be positionabl