Abstract: A switch (201) is conjoined with a hand driving gear train (107) and provided with at least three or more contact groups (203, 204, 205) turned on at least once in each 24 hours. A calendar indicating member is updated according to an order of closing each contact. The matching between the time indicating and the calendar indicating can be accomplished when a user modifies the time display.

Abstract: A multi-functional timepiece comprises a base, a wheel train mounted on the base for rotation, a cam member rotationally driven by the wheel train about a rotational center, and a rotary member mounted to undergo angular displacement in opposite directions. A display member is integrally connected to the rotary member for angular displacement therewith to display time or date information. An interconnecting member interconnects the cam member to the rotary member such that rotational motion of the cam member effects angular displacement of the rotary member in the opposite directions.

Abstract: A calendar watch comprises a calendar corrector setting wheel disposed on the dial side of a main plate and mounted for oscillation about a center of rotation within a second domain to correct a date indicator and a day corrector. The calendar watch also comprises a date normalizing device disposed on the dial side of the main plate for normalizing the date indicator within a third domain, a day indicator normalizing device for normalizing a day star within the second domain or the third domain, and a date indicator driving device and a day indicator driving device having a center of rotation within a fourth domain. A setting lever and a yoke are disposed on a side of the main plate opposite from the dial side.

Abstract: An illuminated date ring for a calendar wristwatch for viewing the date at night through a window in the dial, employs an electroluminescent (EL) lamp beneath a transparent date ring. The EL lamp electrodes extend around the ring, and flexible spring members make sliding contact with the electrodes as the ring rotates in the movement.

Abstract: A timepiece such as a watch carries a date ring with a window display. The ring carries an engaging system capable of driving at the end of each month an annual ring having twelve or twenty four external teeth and five internal teeth. A calendar driving wheel set has a first finger capable of driving the date ring and a second finger capable of driving the annual ring. At the end of a month of thirty days, one of the five internal teeth of the annual ring appears on the path of the second finger and drives this ring in its travel, such ring, from being driven becomes a driving wheel and, via the engaging system, causes the date ring to advance to the first of the following month. A manual correction remains necessary at the end of the month of February.

Abstract: A multifunctional holding plate for use in an analog wristwatch movement with a calendar date ring, a day of the week disc, an engageable time setting pinion and various gear members. The multifunctional holding plate is attached to the movement frame and has (1) retaining fingers to hold the gear members and date ring in place, (2) a flexible detenting spring leg to detent the date ring, (3) a flexible retaining leg to facilitate engagement of the timesetting pinion, and (4) a flexible detenting spring leg to detent the day disc.

Abstract: The invention concerns a timepiece. Such timepiece comprises: a horometric movement (1) including a motor pinion or intermediate wheel (2), a crown wheel with interior teeth (6) associated with a first display system, such as a date display, and a jumper spring (8), a driving wheel set (10) including a drive wheel (12) controlled by the motor pinion (2) and transmitting a motor couple received from the motor pinion to the crown (6) through a salient tooth (14), such wheel set (10) additionally including a hub (16) which is mounted to rotate freely relative to the movement and which elastically supports the drive wheel (12) through an elastic arm (22), such timepiece being characterized in that the elastic arm (22) which supports the drive wheel (12) has a basically C form winding around the hub (16), while the drive wheel (12) meshes directly with the motor pinion (2). The invention is applicable to a timepiece of the mechanical or electromechanical type.

Abstract: This invention concerns a timepiece of the mechanical and/or electromechanical type. Such piece comprises a first display mechanism (1), in particular a date display, a second display mechanism (2) such as a moon phase display, rapid correction means (4) for both display mechanisms (1, 2) and a driving organ (6) which controls such display mechanisms (1, 2) and which can absorb equally the displacement of one or the other of these mechanisms, such piece being characterized in that the rapid correction means (4) comprises meshing means (64) common to both mechanisms (1, 2), mounted for rotation and adapted to operate alternatively upon one or the other of such two mechanisms (1, 2) under the action of control means (72, 74). This invention is applicable to calendar and moon phase watches having a center date hand.

Abstract: This chronograph-watch includes, superposed over one another and in the following order, a motor module (19), a chronograph module (27) and a dial (12). The motor module comprises a first date ring (17). The chronograph module includes a second date ring (28) located immediately under the dial and bearing indications (14) concerning the date which appear through an opening (13). The second ring (28) is controlled by the first ring (17), through a drive chain (32, 33, 34, 36) assembled in the chronograph module.

Abstract: This device is specified for a wrist watch, comprising at least one bi-directional electric motor, at least one mechanism coupled to this motor to drive a day disk (12) and a date disk (10), and at least one electronic circuit designed to transmit control impulses to this motor. This mechanism comprises a drive wheel (11) coupled to the motor and two date fingers (14, 15) pivoting respectively on two axes (16, 17) borne by said drive wheel (11) to increment, and decrement respectively, the date disk (10). The drive wheel (11) also bears a control wheel (22) for a day star (13) designed to increment, or respectively decrement, the day disk (12) by means of said day star (13). The control wheel (22) for the day star is concentric with the drive wheel (11) and integral with the latter when it rotates in one direction or the other.

Abstract: A device for controlling or correcting the readout of the day of the week or date for an analog watch, comprising a crown cogged on the inside and integral with a date or day disk, a bi-directional drive motor and a drive wheel coupled to the drive motor, the drive wheel having two opposite spring-loaded clicks and an arcuate slot in which a fixed stud is engaged, the stud cooperating with the edges of the slot to limit the travel of the drive wheel. The drive mechanism of the date or day disk can thus be recentered automatically after the watch has stopped while simultaneously compensating the rated steps of the motor.

Abstract: The watch includes a time-keeping circuit, a first motor, hands driven by the motor to display the time, an index that moves forward by 1/35th of a revolution per 24 hours, a stationary graduation having inscribed thereon 35 days of 5 consecutive weeks, a mobile graduation divided into 35 parts and bearing numbers 1 to 31 for the ordinals of the month, a second motor that drives the mobile graduation in steps of 1/35th of a revolution, a calendar circuit issuing a signal that is representative of the month and a signal that is representative of the year, and a correction circuit connected to the calendar circuit and issuing a control signal to the second motor. At the end of each month, the mobile graduation is moved by the second motor through N steps (N=4,5,6 or 7) such that number 1 thereon comes to lie opposite the index at the beginning of the following month.

Abstract: This invention is concerned with an analogue calendar watch able to display the hour, the day of the month perpetually, and whenever required, the number of the month via the day of the month display. The watch includes a first motor driving the time display in response to a time base signal, a perpetual calendar circuit including a day counter, a month counter and a year counter and receiving a daily signal supplied by a contact, a control circuit connected to the calendar circuit, and a second motor driving the day of the month display in response to a signal from the control circuit. The display of the number of the month is achieved with a reading circuit that receives from the calendar circuit signals representative of the contents of the day and month counters.

Abstract: The timepiece includes in addition to the hours and minutes hands a calendar mechanism comprising at least one date ring on which is placed an index. The dial includes an annular zone of transparent material through which said ring appears. In a preferred version of the invention the data indications are borne by one of the surfaces of the transparent zone. If the colors of such indications and of the ring are the same and the color of the index different from that of the indications all indications except one will be concealed--that behind which is found the index.

Abstract: The driving mechanism of the day of the month disk (18) comprises a driving wheel (14) and a transmission wheel (16) The driving wheel (14) comprises a toothed sector (26'a, 26'a) which can mesh with the pinion (44) of the transmission wheel (16) and peripheral wall surface (26'a) into which open the two ends (30' and 30") of an arcuate groove (30). The transmission wheel (16) also comprises a member constituted by four arms (48a to 48d) carrying four studs (50a and 50d) which can enter the groove (30) and a pinion (52) which meshes with the disk (18). Outside the driving phases, two of the studs abut against the peripheral wall surface (26'b) in order to lock the disk (18). This mechanism provides for a low torque which enables the energy to be applied to the motor of the watch to be reduced.

Abstract: The invention relates to an indexing gear for timekeeping devices comprising a toothed wheel having an indexing tooth, a pinion indexable two teeth at a time by means of the indexing tooth of the indexing wheel, said pinion being secured against rotation between indexing operations by a shoulder of the indexing wheel, and also comprising a driven toothed wheel meshing with the pinion, the pinion having, according to the invention, slotted teeth or teeth elastically deformable in some other way, which interact with the shoulder of the indexing wheel and the teeth of the toothed wheel, such that a gear drive is obtained which is completely without any play.

Abstract: An improvement in a date indexing device for an analog watch using manual indexing of a date ring with a push button. The indexing member indexes the date ring with a pawl guided onto the toothed rim of the date while one of the driving gear elements for the date ring is disengaged by moving an elastically yieldable support for the gear element.

Abstract: This watch comprises a date crown or date disc (9) pivoted onto a plate (10) and completely independent of a driving gear train (1, 2, 3). A second micro-motor (14) drives this crown (9) in its angular displacements.

Abstract: An electronic watch comprising a device for controlling and driving the day of the month disc, wherein the wheel train supplies the energy necessary for moving the day of the month disc, but does not determine the instant of the jump, which may be initiated at any moment by an electrical signal, independently of the position of the wheel train.The device comprises a mechanism driven by the wheel train and arranged so as to disengage when the moving bodies of the wheel train, controlling the display, turn continuously in clockwise direction and to re-engage when said moving bodies turn in anti-clockwise direction. A control circuit determines, in a portion of the driving cycle in an anti-clockwise direction of rotation with a rapid rate, the jump of the display disc of the day of the month mechanism.

Abstract: A load measuring device for a stepping motor of an analogue electronic timepiece having a stator, a rotor and a coil includes a pulse generator for producing a range of different pulse width normal driving pulses and a driving circuit for successively applying the driving pulses to the motor. A detector detects the rotation and non-rotation state of the rotor in response to the application of each driving pulse and a control circuit is responsive to the detection by the detector for controlling the application by the driving circuit of the minimum pulse width normal driving pulse capable of driving the motor. Each minimum pulse width driving pulse corresponds to the load on the motor at that time and an analyzer analyzes the pulse width of the driving pulses to thereby indicate the load on the motor.

Abstract: A lever actuated by a manual pushbutton for advancing the date ring of a calendar watch so as to correct for months having less than 31 days. A special date change lever incorporates a tab actuated by the pushbutton, a first integral spring portion for biasing the lever to a normal rest position, a second integral spring portion for biasing an arm with a tab against the teeth of the date ring for advancing the date ring.

Abstract: An electronic analog calendar timepiece includes a mechanism for automatically correcting the date indication at the ends of months having less than 31 days. A second motor activates the month correction-mechanism in short months to advance the date dial by additional indicated days. Such irregular advancements occur in accordance with the condition of switches associated with the 29th, 30th, and 31st day positions of the date dial, and in accordance with data stored in memory to correlate with the displayed month of the year. A conventional driving mechanism associates with conventional time keeping circuitry to advance the hands and the day, date, and month indicators for all days occurring in the month. The month-end correcting mechanism is linked to the conventional driving mechanism by actuation of the second motor.

Abstract: A calendar correcting mechanism for an electronic timepiece including a movable calendar member having dates thereon, and a switch cooperative with the movable calendar member for switching between electrical signals to discriminate between the 30-day and 31-day months. A motor drives the movable calendar member to display different dates. A calendar correcting circuit is responsive to the electrical signals switched by the switch for operating the motor to correct the month-end date of 30-day months by rapidly advancing the movable calendar mechanism from the 30th day to the first day of the month so as not to display the 31st day of the month.

Abstract: In an analog timepiece having calendar displays for day and date, a transducer operating independently of the hand driving transducer, feeds, that is, updates the calendar wheels automatically on a daily basis. Synchronization of the daily day and date changes is provided by a twenty-four hour wheel cooperating with the time-keeping mechanism. For setting the calendar displays, turning the stem in one direction polarizes a magnet and advances the day wheel, while turning the stem in the other direction reverses the polarity of the magnet and advances the date dial until desired settings are accomplished. The date advancing transducer can be automatically actuated for end of the month date adjustments.

Abstract: In a timepiece movement, more particularly a quartz wrist watch movement, having a low-torque stepping motor, there is provided a differential mechanism which drives the hands and makes it possible to move the hour-hand alone in jumps. A cannon-pinion having a toothing acts as a sun gear. A planet gear is mounted on an hour-wheel which acts as a planet carrier. A ring gear takes the form of an annulus having internal teeth which is normally stationary but is controlled by a stem and can be rotated by jumps to cause the planet gear to roll along the cannon-pinion toothing, thus causing the planet carrier and consequently the hour hand to jump.

Abstract: An electromechanical calendar timepiece has a date display provided by two indicators carrying the "units" and tens data, respectively. The motor which drives these indicators can rotate at a normal speed or at a considerably higher speed. The units data comprise two consecutive figures "1" intended to display, respectively, the unit of the thirty-first of the months having thirty-one days and the first of each month, and one or the other of which displays the units of the eleventh and twenty-first of each month. The motor rotates at said higher speed on the one hand at the end of the months having less than thirty-one days and on the other hand twice each month, i.e. each time the "1" of the units data is displayed at the beginning of the second and the third decades.

Abstract: A watch contains a date indicator ring and a day of week indicator ring. A switching wheel is displaceable selectively into meshing engagement with the indicator rings to effect adjustment thereof. The switching wheel is actuated by a shaft which is axially displaceable between selection and working positions. In its selection position, the shaft can be rotated in either direction to selectively place the switching wheel in one of two preliminary locations corresponding to a date ring adjustment location and a day of week ring adjustment position. By then axially displacing the shaft to its working position, the switching wheel is displaced to a final location to effect the previously selected mode of adjustment. Such adjustment is effected by rotating the shaft in either direction to rotate the respective indicator ring in either direction.

Abstract: A month correcting mechanism for calendar timepieces comprises a month indicating dial having a toothing and a month dial correcting lever assembly adapted to be engaged with the toothing of the month indicating dial. By manually actuating the month dial correcting lever assembly, the month indicating dial may be rotated independently of the date dial to correct the indication of the month.

Abstract: An electronic timepiece having a voltage conversion circuit for providing a different supply voltage from the timepiece battery voltage, detection means for detecting a condition in which a drive signal of relatively high voltage must be applied to an electromagnetic transducer of the timepiece, which is driven intermittently, switching means controlled by the detection means for selecting either the battery voltage or the converted voltage, and a circuit containing a capacitor which is charged by the output voltage of the switching means while the electromagnetic transducer is not being driven, and is discharged by supplying power to the transducer when the latter is driven, so that drive power is supplied to the transducer from, in effect, a low impedance source.

Abstract: A calender mechanism comprising a cannon wheel having a gear wheel portion and a cylindrical portion extending axially from the gear wheel portion, a day star wheel mounted for rotation on a cylindrical portion of the cannon wheel, and a positioning plate. The day star wheel has an outer diameter less than that of the gear wheel portion of the cannon wheel, and the positioning plate is positioned to partially overlie the outer peripheral portion of the gear wheel portion for preventing the cannon wheel from traveling axially toward the day star wheel. The portion of the positioning plate overlying the outer peripheral portion of the cannon wheel does not extend between the day star wheel and the gear wheel portion of the cannon wheel.

Abstract: A watch movement construction, in which a circuit board is mounted on one surface of a base plate and has a cutout formed at a position near an outer circumference of the movement construction to accommodate a battery in a position such that a circumferential periphery of the battery is partially aligned with the outer circumference of the movement construction whereas a calendar display member is disposed between another surface of the base plate and a time dial at a position displaced from a central portion of the base plate so that a line passing through a center of the battery, a center of the base plate and a center of the calendar display member makes an obtuse angle whereby the calendar display member and the battery are substantially not in an overlapping state thereby to reduce the thickness of the movement construction.

Abstract: A calendar timepiece which does not require any manual date correction at the end of even months is disclosed. The timepiece comprises an even months date correction claw mounted on a date rotational wheel and displaced into a correction position when a claw driving coil is energized by a signal delivered from means for discriminating odd months from even months.