Abstract: A system (90) for driving and holding in position a mobile unit (50) for displaying time or time derivative information includes a device (80) for driving a mobile unit (50) including a driving cam (13) and a driving lever (30) provided to drive a driving member (23), a device (40) for holding a mobile unit (50) in position, a device (70) for activating and deactivating the position-holding device (40) including a deactivation cam (22), and a device (12, 21) for mechanically coupling or synchronizing the driving cam (13) and the deactivation cam (22). In one embodiment, the driving cam and the deactivation cam have separate rotation axes and are linked by a gear mechanism. In another embodiment, the driving cam and the deactivation cam are coaxial.

Abstract: A digital display and a digital time device are provided, which includes a housing, a drive assembly, display assemblies and a mainboard assembly. The housing is provided with seven windows arranged to form the shape of the character “”. The mainboard assembly is fixedly connected to the housing and is located behind the windows. Seven curved grooves are provided inside of the drive assembly. The display assemblies include display sheets and pull rods. One end of each pull rod is fixedly connected to the display sheets. The display sheets are slidingly connected to the mainboard assembly. There are seven display assemblies. Each pull rod is slidingly connected to the curved grooves in one-to-one correspondence, and each display sheet is one-to-one correspondence with the windows. The present invention can achieve many advantages, such as low power consumption, great waterproof, strong moisture resistance capabilities and high stability.

Abstract: A linear piezoelectric motor including a passive element having an elongated shape, and a piezoelectric actuator including a resonator including a pair of arms connected at one of their ends at a connection zone, the two other ends being called free, the passive element being capable of being moved linearly between the free ends by friction of the free ends against the passive element, the passive element and the resonator being inclined with respect to one another by a non-zero angle (?) of less than 90 degrees.

Abstract: A substrate includes: a wiring substrate; a lower plate disposed below the wiring substrate; a canted coil spring disposed between the lower plate and the wiring substrate; an electronic component package disposed above the wiring substrate; a sheet disposed between the wiring substrate and the electronic component package and including a plurality of connection members that connects a plurality of first electrodes provided on an upper surface of the wiring substrate and a plurality of second electrodes provided on a lower surface of the electronic component package; an upper plate disposed on the electronic component package; and a coupling member that couples the lower plate and the upper plate, wherein the lower plate, the canted coil spring, the wiring substrate, the sheet, the electronic component package, and the upper plate are laminated and fixed in this order by coupling the lower plate and the upper plate by the coupling member.

Abstract: A drive device includes a plurality of motors; and a motor control processing unit that drives the motors. When the motor control processing unit drives the plurality of motors, it performs control such that a driving speed of one motor of the plurality of motors decreases and driving of the other motor of the plurality of motors starts.

Abstract: An electric rotation device rotating a rotation target member by torque outputted to an output member includes: a motor; a reduction gear mechanism including transmission gears transmitting torque from the motor to the output member; a rotational position detection gear including a tooth width different from that of a predetermined gear among the transmission gears, and meshing with the predetermined gear; a rotational position detection sensor outputting a signal corresponding to a rotational position of the rotational position detection gear, and detecting a rotational position of the rotation target member; a visual recognition portion configured to distinguish a reference tooth of one gear from the other tooth of the one gear; and a groove filling portion filling a tooth groove of the other gear, the groove filling portion filling a portion of the tooth groove not overlapping the one gear in a radial direction.

Abstract: A substrate includes: a wiring substrate; a lower plate disposed below the wiring substrate; a canted coil spring disposed between the lower plate and the wiring substrate; an electronic component package disposed above the wiring substrate; a sheet disposed between the wiring substrate and the electronic component package and including a plurality of connection members that connects a plurality of first electrodes provided on an upper surface of the wiring substrate and a plurality of second electrodes provided on a lower surface of the electronic component package; an upper plate disposed on the electronic component package; and a coupling member that couples the lower plate and the upper plate, wherein the lower plate, the canted coil spring, the wiring substrate, the sheet, the electronic component package, and the upper plate are laminated and fixed in this order by coupling the lower plate and the upper plate by the coupling member.

Abstract: Example transmissions for rotating coaxial drive shafts in opposite directions are described herein. An example apparatus includes a first face gear coupled to a first drive shaft, a first elliptically interfacing gear coupled to a second drive shaft and facing toward the first face gear, the second drive shaft disposed within and coaxially aligned with the first drive shaft, and a wobble plate disposed between the first face gear and the first elliptically interfacing gear. The wobble plate has a second face gear on a first side of the wobble plate engaged with the first face gear and a second elliptically interfacing gear on a second side of the wobble plate engaged with the first elliptically interfacing gear. The wobble plate is to rotate the first face gear and the first elliptically interfacing gear in opposite directions.

Abstract: A process for decorating a dial includes a step (E1) of engraving a pattern in a pad-printing cliché with a femtosecond laser, then a step (E20) of transferring said pattern to the dial using the pad-printing cliché. The process can include surface structuring of the dial, then transferring the pattern to the dial at least partially superposed on surface-structuring obtained by the surface structuring, and can also include an intermediate coloring of the decorated or to be decorated surface in the surface structuring, using a different color from the color used in the transferring.

Abstract: A wristwatch-type notification apparatus that displays information by using indicating hands includes a display section that drives and rotates one or more of the plurality of indicating hands to notify a user of time information and a notification section that notifies the user of event information representing that a pre-specified condition is satisfied by moving, on the basis of a trigger produced in accordance with the event information, an indicating hand to a display position specified in accordance with the type of the event information associated with the trigger and causing the indicating hand to make reciprocating motion in the forward and reverse directions over a range including the display position.

Abstract: A watch including a dial pad, a circular movement disposed adjacent to the dial pad, a circular printed circuit board (PCB) having an inner diameter and an outer diameter, the PCB including a hole defined as the inner diameter and a plurality of integrated circuits (ICs) disposed in a region between the inner diameter and the outer diameter, in which the movement having a diameter smaller than the inner diameter is shaped and sized to fit into the hole, a first battery disposed adjacent to the PCB and supplies a first operating voltage only to the PCB, and a case dimensioned and shaped to receive the dial pad, the movement, the PCB, and the first battery.

Abstract: A quartz watch movement includes a minute wheel connected to a handsetting wheel by an intermediate wheel, a shaft of a third wheel placed in a shaft hole in a main plate, elastic connection structures being rotated by a third-wheel shaft gear and a minute wheel piece gear which are engaged together and are arranged between a minute wheel tube and the minute wheel piece gear when a stem is pulled or the minute hand is adjusted through the handsetting wheel, the intermediate wheel and a minute wheel shaft gear, and a second-hand stop lever detachably connected to a second-hand stop electrode. The elastic connection structures are arranged between the minute wheel tube and the minute wheel piece gear, so that the quartz watch is accurate in travel time and has the function of efficiently adjusting the hour hand and the minute hand when omitting a handsetting middle wheel.

Abstract: A variator assembly for a CVT or an IVT includes an input shaft that defines an axis of rotation, an input disc rotationally coupled to the input shaft and coaxial with the axis of rotation, and an output disc rotationally coupled to the input disc and coaxial with the axis of rotation. The output disc includes a distal portion having an axial width. A gear is connected to the distal portion of the output disc. The gear has a plurality of gear teeth each having a gear tooth face width that is greater than the axial width of the distal portion of the output disc.

Abstract: A timepiece movement driving at least one output arbor for receiving an indicator displaying a physical or temporal magnitude facing and above a complementary indicator or a dial, the complementary indicator or dial being arranged on a local reference or bearing surface included locally in the movement about of each the output arbor of the movement, or being arranged on the local reference or bearing surface. The output arbor includes, on a side of a local reference or bearing surface thereof, a free end which is either recessed or flush with respect to the local reference or bearing surface thereof.

Abstract: The invention relates to a toothing, in particular between a starting pinion (22) and a ring gear (25) of an internal combustion engine. The toothing is designed as straight or oblique toothing and comprises a number of individual teeth (202) that mesh with one another. The thicknesses of the individual teeth (212) are asymmetrical, in particular in reduced or widened form on one or both sides.

Abstract: The chronograph mechanism includes a control device and a chronograph gear train designed to be driven directly or indirectly by a barrel, this chronograph gear train including a second-counter mobile and a mobile with a first precision corresponding to a first fraction of a second. The chronograph mechanism also includes at least one indicator which displays the seconds and first fractions of a second of the duration measured. The chronograph gear train includes an additional mobile (5) with a second precision corresponding to a second fraction of a second, which is driven by the mobile (3) for the first fraction of a second by a mobile (4) compensating the backlash; and the chronograph mechanism also includes an indicator for the second fractions of a second, which are smaller than the first fractions of a second, of the duration measured, which indicator is actuated by the additional train.

Abstract: Device for detecting and synchronising the position of at least one first wheel (16) of a timepiece mechanism (1) for an electronic analogue watch, wherein this first wheel (16) extends in one plane, the detection and synchronisation device (30) comprises at least one light source (32) emitting a light beam (34) and at least one light detection system (36), and this detection and synchronisation device is characterised in that a first light-reflecting element (40) projects from one of the upper or lower surfaces of the first wheel (16) of the timepiece mechanism (1), wherein the light source (32) and the light detection system (36) are arranged so that in a determined position of the first wheel (16) of the timepiece mechanism (1), the light beam (34) emitted by the light source (32) is reflected by the first reflective element (40) in the direction of the light detection system (36).

Abstract: The invention concerns a timepiece display module intended to display a series of alphanumerical characters and/or pictures at different moments. The display module includes a platform (3) arranged to be actuated in rotation about an axis and several wheel sets (5) arranged on the platform (3) so that each wheel set (5) turns on itself while orbiting about the axis of rotation of said platform (3) when the latter is actuated in rotation. The display module further includes several wings (1) which are arranged on each wheel set so (5) as to be positioned in turn at the center of the display module. Each wing (1) of each wheel set (5) is actuated such that the wings are oriented in a identical plane at the center of the display module and are adjacent to each other so as to form a central display unit (2).

Abstract: Clockwork movement for a wristwatch, comprising a kinematic chain including at least one belt (20, 21) for transmitting the movements and/or couples between at least two pulleys. The pulleys are held on the bottom plate or the bridges by ball bearings (151, 161, 171, 181). The movement is rewound by means of linear oscillating mass (14) charging four barrels (15, 16, 17, 18) through a couple distributor (40). The barrels are non-parallel to one another. The back cover is covered by inclined glasses (110, 120, 130) allowing the barrels, the linear oscillating mass and at least certain pulleys to be seen. The regulating organ (51) is removable.

Abstract: A display apparatus which includes: a first display wheel that has a first display section; a second display wheel that has a second display section; a driving section that rotates in a forward direction and a reverse direction, and rotates the first display wheel in the forward direction and the reverse direction; and a rotating section that rotates only the first display wheel in the forward direction when the first display wheel is rotated in the forward direction, and rotates the second display wheel in the reverse direction together with the first display wheel when the first display wheel is rotated in the reverse direction.

Abstract: A timepiece includes two hands (14, 16) advancing in superposition to display a first item of information regarding the current time. On demand, by operating a control (17), one of the two hands moves relative to the first to display a second item of information regarding the current time, the two hands returning to a superposed position when the control is released.

Abstract: Timepiece displaying the current time and including at least first and second display devices for a time-related quantity, the first and second display devices each being driven by a drive mechanism including a drive wheel (2; 2a), which is itself driven by the movement of the timepiece (3), at least the drive wheel (2; 2a) of one of the drive mechanisms carrying a finger (4; 4a) via which the wheel drives the corresponding display device, the timepiece (3) being characterized in that the finger (4; 4a) is friction fitted onto the drive wheel (2; 2a).

Abstract: An analog electronic timepiece comprising: a plurality of rotating display bodies; a gear train mechanism; a drive control unit; a detection unit; and a delay cycle counting unit, wherein the delay cycle counting unit adds 1 to the number of delay cycles in a case where it is determined, for each detection cycle of a predetermined reference display mode, that the first rotating display body is stopped during a rotation cycle of the first rotating display body based on detection results by the detection unit at a first timing and at a second timing, and the drive control unit rotationally moves the first rotating display body for a number of times, the number corresponding to the number of delay cycles, in a case where the first rotating display body is capable of operating at the first timing.

Abstract: The column wheel (40) for a 3 stroke mechanism has a hub (46) arranged at the centre of a superstructure exhibiting rotational symmetry of order n, the superstructure including n radial arms (48) and n columns (44) parallel to the axis of rotation of the column wheel, the columns being regularly distributed along the circumference of the column wheel and separated from each other by n empty spaces forming as many openings between the columns. The column wheel is characterized in that the width of the columns (44) is larger than the openings between the columns, and in that the width of the arms (48) is less than half the width of the columns (44).

Abstract: Backlash take-up timepiece wheel (10), for meshing with a second toothing (21) formed of second teeth (23) of given width (24) arranged consecutively with a second constant pitch (P2) on a second pitch diameter (22) of an opposing mobile component. This backlash take-up wheel (10) comprises, arranged to mesh with this second toothing (21), a first toothing (11) on a first pitch circle (12) comprising a series of identical pairs (2) of teeth arranged consecutively with a first constant pitch (P1) on the first pitch circle (12). Each such pair (2) comprises, on either side of a radial axis (3), a first flexible tooth (4) and a second tooth (5). Each second tooth (5) is a flexible tooth, and the distances (91, 92) measured on the first pitch circle (12) between a successive first tooth (4) and second tooth (5) are different in pairs.

Abstract: A clock assembly containing a specialized clockwork. The clockwork contains a hub of three concentric posts upon which are mounted the second hand, minute hand, and hour hand of the clock. The post that connects to the second hand is the widest and shortest post on the hub. Consequently, when a second hand is connected to this outer-most post, the second hand can rotate under the minute hand and the hour hand closest to the clock face. By positioning the second hand post on the exterior of the hub, a 1:1 ratio can be maintained between the rotations of the clock motor and the rotations of the second hand post. This enables the full power of the motor to be transferred to the second hand post. Accordingly, the clockwork is capable of move, large, heavy, and unbalanced second hands.

Abstract: Timepiece gear train device (1) of reduced height with a large power reserve, driving display means (4) including a cannon-pinion (5) and an hour wheel (6), which are driven about a main pivot axis (AP), secant to a barrel (3), by a motion work (7) and including a driving wheel (8), which pivots about a secondary pivot axis (AS) external to said barrel (3) and is friction coupled to said motion work (7) on a friction surface (9) coaxial to said secondary pivot axis (AS). Said driving wheel (8) includes a driving cannon pinion (83) pivoting about a wheel body (80) along said secondary pivot axis (AS) and coupled by a friction spring (84) to a shoulder (85) of said wheel body (80) forming said friction surface (9), said driving cannon-pinion (83) cooperating with a minute wheel (14) pivoting about a minute axis (AM).

Abstract: Apparatuses (250) for the display of time with distinctive aesthetic character that include rigid rotating members (220) which are driven by movements (251) and held in place by the force of gravity. The movement (251) rotates drive wheels (256, 257) so that the rigid rotating members (220) indicate the current time and the time is interpreted using traditional clock interpretation methods. The movement (251) may include a support bushing (260) to provide support for output shafts (252, 253) of the movement (251). A cover (262) may also provide support for output shafts (252, 253).

Abstract: A support for a mechanism for displaying jumping-type information for a timepiece movement is disclosed. The mechanism may include a display member driven in rotation via a driving star wheel. The support may be positioned between the display member and a frame element of the timepiece movement. The support may include a base that may include at least one first hole configured to receive a shaft for rotating the display member. The support may also include a first arm extending from the base and arranged to ensure the function of a jumper for the driving star wheel, and a second arm extending from the base and arranged to act on the driving star wheel to cause the driving star wheel to rotate in order to correct information displayed in response to a predefined action of a user that deforms the second arm.

Abstract: An instantaneous driving mechanism for a timepiece movement is disclosed. The driving mechanism may include a mobile comprising a first wheel driven by a driving member of the timepiece movement and configured to drive rotation of a first cam of the mobile. The driving mechanism may also include a lever mounted pivotally on at least one frame element of the timepiece movement, the lever being configured to cooperate with the mobile in order to be moved and to cooperate with a counter of the timepiece movement to increment the counter by instantaneous pulses. The first cam may be coaxial with the first wheel and have a periphery of varying radius. In addition, the first cam may be configured to cooperate with a nose carried by a first arm of the lever and to move the first arm progressively away from the center of the mobile.

Abstract: Timepiece display device (100) comprising a first display member (1) cooperating with first drive means (10) via a first transmission means (11), and a second display member (2), cooperating with a second drive means (20) via a second transmission means (21). First contactless coupling means (12) are carried by said first display member (1) or by said first transmission means (11), second contactless coupling means (22) are carried by said second display member (2), or by said second transmission means (21), said first coupling means (12) cooperate with said second coupling means (22) in a complementary, contactless, attraction coupling in order, when said coupling means are located in immediate proximity to each other, to unite the motion of said first display member (1) and said second display member (2). Said first coupling means (12) and said second coupling means (22) are magnetic or electrostatic.

Abstract: The going train for a timepiece has a mechanical movement having a frame (0), a barrel (1) and an escapement pinion (5) which are connected by the going train. This going train has a stepping-up epicyclic train having a first planet gear (6) with a constant rotational speed during normal operation of the movement, a second planet gear (7) kinematically connected to the escapement pinion (5), at least one satellite gear (9) each meshing with the first planet gear (6) and the second planet gear (7), and a satellite carrier (8) kinematically connected to the barrel (1) and carrying the satellite gear(s) (9).

Abstract: The invention relates to a timepiece with an analogue display, including a timepiece movement (1) provided with a mechanical output, located on an arbour (2) of said movement, and a display assembly (30) provided with at least one time display device (31, 32, 111, 112) driven by said mechanical output, wherein the display assembly is separate from the timepiece movement (1) and linked to a fixed part (10) of said movement (1) by support means which enables said display device to take several different positions around the output arbour (2) of the movement. According to the invention, the support means of the display assembly includes an intermediate support (34, 70, 72, 70?) secured to the fixed part (10) of the timepiece movement (1) and provided with support members (36, 87, 89, 87?, 89?) allowing said at least one display device (31, 32, 111, 112) to be assembled in several positions on the intermediate support (34, 70, 72, 70?). The invention concerns the field of timepiece display members.

Abstract: A retrograde display mechanism of a timepiece includes a retrograde display mechanism main body having a time value driving wheel that rotates once every day and that has a time value finger which advances a time value including a date or a day. A time value transmitting wheel has a time value transmitting wheel tooth portion and a drive cam portion which are rotated by one tooth every day by the time value finger. A fan-shaped wheel operating lever has a cam follower portion and a fan-shaped wheel operating tooth portion engaged with the drive cam portion, and a fan-shaped wheel and a fan-shaped wheel display portion which mesh with the fan-shaped wheel operating tooth portion to rotate in response to rocking of the operating lever. The fan-shaped wheel rapidly rotates reversely to return to an initial position whenever the end of the month or the end of the week passes.

Abstract: The invention concerns a mechanical device (100) for the sequential control of at least two levers for a timepiece mechanism, controlling a first lever (1) and a second (2) lever cooperating with a contact surface (10) in accordance with a sequence wherein each changes from a first torque consumption level (11; 21) to a second, higher level (12; 22) during an increasing phase (14; 24) in which it stores torque, then from said second level (12; 22) to said first level (11; 21) during a decreasing phase (15; 25) in which it transmits energy. The device is wherein it includes delaying means (4) creating, during the decreasing phase (15) of said first lever (1), a stabilizing stage at a third, intermediate level (13) between said first (11) and second (12) levels. The invention also concerns a timepiece incorporating a device (100) of this type.

Abstract: A timepiece, particularly wristwatch, having a dial on which are arranged at least two circular scales having centers which are offset relative to one another. A first hand can sweep over the first scale and a second hand can sweep over the second scale, each hand being rotatable around a hand axis centric to the associated scale, and wherein the scales partially overlap. There is formed in the dial in the area surrounded by the first circular scale an aperture through which an area of the timepiece located behind the plane of the dial is visible. The circle segment of the second scale extending across the aperture is arranged on a separate scale carrier which is pivotable around a pivot axis coaxial to the hand axis of the second hand between a display position covering the aperture into a non-display position not covering the aperture.

Abstract: A timepiece device with multiple-hand which can be miniaturized and made thin as a whole has a configuration where a hour hand hour wheel positioned close to an hour hand to which a rotation movement of a 3rd motor via an hour hand gear train mechanism and a functional hand hour wheel positioned close to a functional hand to which a rotation movement of a 4th motor via a functional hand gear train mechanism are arranged on a front side of a support plate, and a 4th wheel positioned close to a second hand and a 2nd wheel positioned close to a minute hand are arranged on a rear side of the support plate.

Abstract: A timepiece device with multiple-hand includes: one or more hands driven to rotate by one or more driving motors; one or more gear train mechanisms include gears which transmit a rotation movement of the driving motors to the hands; and a support plate which supports the gears; wherein the gears include: a first gear which includes a pair of gear members provided on front and rear sides of the support plate; a second gear which meshes with a gear member provided on the rear side to transmit a rotation movement of one of the driving motors to the first gear; and a third gear which meshes with a gear member provided on the front side to transmit a rotation movement of one of the driving motors to the hands.

Abstract: The invention concerns a timepiece display module intended to display a series of alphanumerical characters and/or pictures at different moments. The display module includes a platform (3) arranged to be actuated in rotation about an axis and several wheel sets (5) arranged on the platform (3) so that each wheel set (5) turns on itself while orbiting about the axis of rotation of said platform (3) when the latter is actuated in rotation. The display module further includes several wings (1) which are arranged on each wheel set so (5) as to be positioned in turn at the centre of the display module. Each wing (1) of each wheel set (5) is actuated such that the wings are oriented in a identical plane at the centre of the display module and are adjacent to each other so as to form a central display unit (2).

Abstract: Apparatuses (250) for the display of time with distinctive aesthetic character that include rigid rotating members (220) which are driven by movements (251) and held in place by the force of gravity. The movement (251) rotates drive wheels (256, 257) so that the rigid rotating members (220) indicate the current time and the time is interpreted using traditional clock interpretation methods. The movement (251) may include a support bushing (260) to provide support for output shafts (252, 253) of the movement (251). A cover (262) may also provide support for output shafts (252, 253).

Abstract: Lever (6) comprising at least a first element (61) for guiding in rotation of a first wheel (1), at least one friction element (62) which is designed to co-operate with an at least substantially cylindrical portion (10c) of the first wheel, and at least one resilient element (63), which is designed to return resiliently the at least one friction element to a state of co-operation with the said portion of the first wheel, notably in contact with the said portion of the first wheel.

Abstract: A support for a mechanism for displaying jumping-type information for a timepiece movement is disclosed. The mechanism may include a display member driven in rotation via a driving star wheel. The support may be positioned between the display member and a frame element of the timepiece movement. The support may include a base that may include at least one first hole configured to receive a shaft for rotating the display member. The support may also include a first arm extending from the base and arranged to ensure the function of a jumper for the driving star wheel, and a second arm extending from the base and arranged to act on the driving star wheel to cause the driving star wheel to rotate in order to correct information displayed in response to a predefined action of a user that deforms the second arm.

Abstract: An instantaneous driving mechanism for a timepiece movement is disclosed. The driving mechanism may include a mobile comprising a first wheel driven by a driving member of the timepiece movement and configured to drive rotation of a first cam of the mobile. The driving mechanism may also include a lever mounted pivotally on at least one frame element of the timepiece movement, the lever being configured to cooperate with the mobile in order to be moved and to cooperate with a counter of the timepiece movement to increment the counter by instantaneous pulses. The first cam may be coaxial with the first wheel and have a periphery of varying radius. In addition, the first cam may be configured to cooperate with a nose carried by a first arm of the lever and to move the first arm progressively away from the center of the mobile.

Abstract: A jumper for a timepiece movement is disclosed that includes a base and an elastically deformable arm extending from the base and provided with an abutment surface intended to cooperate with a notch of a mobile. The base may comprise a support element bearing the arm. The base may further comprise two link elements each linking an end of the support element to a fixed element of the base. The jumper may be associated with a control member arranged in such a way that an axial rotation of the control member provokes a displacement of the support element by deformation of a frame, of which the support element and the two link elements form sides.

Abstract: Timepiece movement including a module fitted with a first wheel set meshing with a second wheel set, which pivots on a base on which the module is mounted. The movement includes a means of positioning the module formed by a cam, at least most of the periphery of which forms an Archimedes' spiral. The cam is arranged so as to allow the distance of centers between the first and second wheel sets to be adjusted, when the cam is rotated on itself about the center of the Archimedes' spiral. The cam is preferably calibrated. The invention also concerns a method of adjusting the distance of centers between the two wheel sets using said cam to optimise the gearing efficiency of the two wheel sets.

Abstract: Clockwork movement for a wristwatch, comprising a kinematic chain including at least one belt (20, 21) for transmitting the movements and/or couples between at least two pulleys. The pulleys are held on the bottom plate or the bridges by ball bearings (151, 161, 171, 181). The movement is rewound by means of linear oscillating mass (14) charging four barrels (15, 16, 17, 18) through a couple distributor (40). The barrels are non-parallel to one another. The back cover is covered by inclined glasses (110, 120, 130) allowing the barrels, the linear oscillating mass and at least certain pulleys to be seen. The regulating organ (51) is removable.

Abstract: The annual calendar device carries a date ring (1) and a drive wheel (5) for said ring. The drive wheel (5) carries a mechanism (10) including a first finger (6) driving the ring (1) through one step each day and a second finger (7) which is inserted, at the end of the months of less than thirty-one days, into the trajectory of the teeth (4) of the ring (1) to move said ring forward one additional step. The second finger (7) is inserted into said trajectory by a kinematic chain (9) controlled by a toothing (8) carried by the ring (1).

Abstract: The column-wheel (1) for a chronograph includes: a ratchet (2) provided with a plurality of teeth (3) the shape of which defines the direction of rotation of the column-wheel; a superstructure coaxial to the wheel and having n>=3 order rotational symmetry, the peripheral part of the superstructure forming n columns (10) parallel to the wheel axis and arranged substantially along the periphery of the ratchet (2), each column including an outer part, the cross-section of which is substantially shaped like a truncated triangle with a base substantially parallel to the circumference of the wheel and a front side (12), called the leading edge, and a back side (13), called the trailing edge, extending from the base towards the interior of the wheel. The column-wheel is characterized in that said cross-section is asymmetrical, a first angle ? between the leading edge (12) and the base (14) being smaller than a second angle ? between the base and the trailing edge (13).

Abstract: Clockwork movement for a wristwatch, comprising a kinematic chain including at least one belt (20, 21) for transmitting the movements and/or couples between at least two pulleys. The pulleys are held on the bottom plate or the bridges by ball bearings (151, 161, 171, 181). The movement is rewound by means of linear oscillating mass (14) charging four barrels (15, 16, 17, 18) through a couple distributor (40). The barrels are non-parallel to one another. The back cover is covered by inclined glasses (110, 120, 130) allowing the barrels, the linear oscillating mass and at least certain pulleys to be seen. The regulating organ (51) is removable.

Abstract: A timepiece includes two hands (14, 16) advancing in superposition to display a first item of information regarding the current time. On demand, by operating a control (17), one of the two hands moves relative to the first to display a second item of information regarding the current time, the two hands returning to a superposed position when the control is released.