Abstract: A timepiece includes a timepiece movement, a calendar mechanism and a mechanism for indicating the sunrise and sunset that take account of seasonal variations. The calendar mechanism includes a date display and a month display. The sunrise and sunset indicating mechanism also includes an annual cam having a profile representative of the tilt of the sun with respect to the equatorial plane and arranged to be driven in rotation by the date wheel set via a third kinematic chain.

Abstract: A timepiece movement, a calendar mechanism and device for indicating the sunrise and sunset that takes account of seasonal variations. The simple calendar mechanism includes a display mechanism for displaying the date and a display mechanism for displaying the month. The sunrise and sunset indicating device also includes an annual cam having a profile representative of the tilt of the sun with respect to the equatorial plane and arranged to be driven in rotation via the hour wheel set through a kinematic chain that passes through the month display device and has a transmission ratio of 1:744.

Abstract: An ascent rate indicator mechanism includes a first wheel set and a pressure sensor. The first wheel set is connected to the pressure sensor driven in rotation by a pressure variation. The mechanism further includes a second wheel set driven by the first wheel set in a single direction of rotation from a start position into a measurement position corresponding to a decrease in pressure, uncoupling and return structure to be actuated at regular intervals to uncouple the second wheel set and to return it to the start position, an ascent rate display mechanism connected to the second wheel set and including an indicator member arranged to occupy, at each regular interval, a display position representative of the decrease in pressure during the interval, and synchronization structure actuated at each regular interval and arranged to maintain the display position of the indicator member during the regular interval.

Abstract: A timepiece includes a timepiece movement, a calendar mechanism and a mechanism for indicating the sunrise and sunset that take account of seasonal variations. The calendar mechanism includes a date display and a month display. The sunrise and sunset indicating mechanism also includes an annual cam having a profile representative of the tilt of the sun with respect to the equatorial plane and arranged to be driven in rotation by the date wheel set via a third kinematic chain.

Abstract: A timepiece movement, a calendar mechanism and device for indicating the sunrise and sunset that takes account of seasonal variations. The simple calendar mechanism includes a display mechanism for displaying the date and a display mechanism for displaying the month. The sunrise and sunset indicating device also includes an annual cam having a profile representative of the tilt of the sun with respect to the equatorial plane and arranged to be driven in rotation via the hour wheel set through a kinematic chain that passes through the month display device and has a transmission ratio of 1:744.

Abstract: An ascent rate indicator mechanism includes a first wheel set and a pressure sensor. The first wheel set is connected to the pressure sensor driven in rotation by a pressure variation. The mechanism further includes a second wheel set driven by the first wheel set in a single direction of rotation from a start position into a measurement position corresponding to a decrease in pressure, uncoupling and return structure to be actuated at regular intervals to uncouple the second wheel set and to return it to the start position, an ascent rate display mechanism connected to the second wheel set and including an indicator member arranged to occupy, at each regular interval, a display position representative of the decrease in pressure during the interval, and synchronization structure actuated at each regular interval and arranged to maintain the display position of the indicator member during the regular interval.

Abstract: A timepiece indicates the sunrise and sunset taking into account seasonal variations. The timepiece includes a sphere representing the Earth, a shell arranged concentrically to the sphere and arranged to delimit a part of the globe where it is night time from another part where it is daytime by indicating the position of the Earth's terminator. The shell can pivot around the globe along two perpendicular axes. The shell is driven by the movement in order to revolve at the rate of one revolution every 24 hours around the polar axis. A differential mechanism is controlled by a year cam that has a profile representing the inclination of the sun in relation to the equatorial plane. The differential mechanism controls the inclination of the shell around the axis by a drive shaft concentric to the polar axis.

Abstract: The timepiece comprises means for indicating the sunrise and sunset taking account of seasonal variations. These means comprise a sphere reproducing the terrestrial globe, a shell arranged concentrically to the sphere and arranged to demarcate one portion of the terrestrial globe where it is night from another portion where it is day by indicating the position of the Earth's terminator. The shell can pivot about the globe on two axes perpendicular to each other. The shell is driven by the movement so as to rotate at a rate of one revolution per 24 hours about the polar axis. A disconnecting mechanism is controlled by an annual cam which has a profile representative of the tilt of the Sun with respect to the equatorial plane. The disconnecting mechanism controls the tilt of the shell about the axis by means of a drive shaft concentric to the polar axis.

Abstract: The timepiece comprises means for indicating the sunrise and sunset taking account of seasonal variations. These means comprise a sphere reproducing the terrestrial globe, a shell arranged concentrically to the sphere and arranged to demarcate one portion of the terrestrial globe where it is night from another portion where it is day by indicating the position of the Earth's terminator. The shell can pivot about the globe on two axes perpendicular to each other. The shell is driven by the movement so as to rotate at a rate of one revolution per 24 hours about the polar axis. A disconnecting mechanism is controlled by an annual cam which has a profile representative of the tilt of the Sun with respect to the equatorial plane. The disconnecting mechanism controls the tilt of the shell about the axis by means of a drive shaft concentric to the polar axis.

Abstract: The timepiece comprises means for indicating the sunrise and sunset taking into account seasonal variations (17, 27). These means comprise a sphere (17) representing the Earth, a shell (27) arranged concentrically to the sphere and arranged to delimit a part of the globe where it is night time from another part where it is daytime by indicating the position of the Earth's terminator. The shell can pivot around the globe along two perpendicular axes (X-X, Y-Y). The shell is driven by the movement in order to revolve at the rate of one revolution every 24 hours around the polar axis (X-X). A differential mechanism (50) is controlled by a year cam (72) that has a profile representing the inclination of the sun in relation to the equatorial plane. The differential mechanism controls the inclination of the shell around the axis (Y-Y) by means of a drive shaft (35) concentric to the polar axis (X-X).

Abstract: The timepiece includes sunrise and sunset indicating means taking account of seasonal variations, said means include a sphere reproducing the terrestrial globe, a shell arranged concentrically to the sphere and arranged to demarcate one portion of the terrestrial globe where it is night from another portion where it is day by indicating the position of the earth's terminator. The sphere is arranged to be driven by the movement so as to rotate at the rate of one revolution per 24 hours about a first axis of rotation oriented parallel to the plane of the dial, and the shell is mounted to pivot about a second axis perpendicular to the plane of the dial. The sunrise and sunset indicating means also include an annual cam arranged to be driven in rotation by the movement at the rate of one revolution per year, the cam having a profile representative of the tilt of the sun relative to the equatorial plane.

Abstract: The timepiece includes sunrise and sunset indicating means taking account of seasonal variations, said means include a sphere reproducing the terrestrial globe, a shell arranged concentrically to the sphere and arranged to demarcate one portion of the terrestrial globe where it is night from another portion where it is day by indicating the position of the earth's terminator. The sphere is arranged to be driven by the movement so as to rotate at the rate of one revolution per 24 hours about a first axis of rotation oriented parallel to the plane of the dial, and the shell is mounted to pivot about a second axis perpendicular to the plane of the dial. The sunrise and sunset indicating means also include an annual cam arranged to be driven in rotation by the movement at the rate of one revolution per year, the cam having a profile representative of the tilt of the sun relative to the equatorial plane.

Abstract: The electric solar watch winder includes a rotating support, a motor arranged to drive the rotating support, an accumulator arranged to power the motor, a solar cell arranged to charge the accumulator, an internal clock, an electronic means of controlling the motor, a light sensor connected to the electronic means, and a user control interface for the electronic means. The electronic means is arranged to be controlled by the user to be selectively placed in one or other of a plurality of operating modes, the plurality of operating modes including a first mode in which the rotating support is only driven when the winding mechanism is illuminated and a second mode in which a rotating support drive program is started at a pre-selected time using the control interface.

Abstract: The musical or striking watch includes a watch case, which is formed of a middle part and a back cover, provided with side apertures and removably secured in a sealed manner to the middle part. A crystal closes the case in a sealed manner. A timepiece movement is held inside the watch case and provided with a striking mechanism that can be actuated at determined times to produce notes or music. The watch further includes at least one removable acoustic radiating membrane, which is arranged in the watch case. The removable membrane includes, in a central position, a retaining member. This retaining member is arranged with play in a housing in an inner stop member of the back cover. Owing to the cooperation between the retaining member and the stop member, the bending of the membrane is limited following excess pressure or vacuum pressure according to environmental conditions.

Abstract: The electric solar watch winder includes a rotating support, a motor arranged to drive the rotating support, an accumulator arranged to power the motor, a solar cell arranged to charge the accumulator, an internal clock, an electronic means of controlling the motor, a light sensor connected to the electronic means, and a user control interface for the electronic means. The electronic means is arranged to be controlled by the user to be selectively placed in one or other of a plurality of operating modes, said plurality of operating modes including a first mode in which the rotating support is only driven when the winding mechanism is illuminated and a second mode in which a rotating support drive programme is started at a pre-selected time using the control interface.

Abstract: Method for coating micromechanical components of a micromechanical system, in particular a watch movement, comprising: providing a substrate (4) component to be coated; providing said component with a first diamond coating (2) doped with boron; providing said component with a second diamond coating (3); wherein: said second diamond coating (3) is provided by CVD in a reaction chamber; during CVD deposition, during the last portion of the growth process, a controlled increase of the carbon content within the reaction chamber is provided, thereby providing an increase of the sp2/sp3 carbon (6) bonds up to an sp2 content substantially between 1% and 45%. Corresponding micromechanical components are also provided.

Abstract: The musical or striking watch includes a watch case, which is formed of a middle part and a back cover, provided with side apertures and removably secured in a sealed manner to the middle part. A crystal closes the case in a sealed manner. A timepiece movement is held inside the watch case and provided with a striking mechanism that can be actuated at determined times to produce notes or music. The watch further includes at least one removable acoustic radiating membrane, which is arranged in the watch case. The removable membrane includes, in a central position, a retaining member. This retaining member is arranged with play in a housing in an inner stop member of the back cover. Owing to the cooperation between the retaining member and the stop member, the bending of the membrane is limited following excess pressure or vacuum pressure according to environmental conditions.

Abstract: There is disclosed a portable electronic device (1), particularly of the wristwatch type, comprising at least first and second analogue display members, a sensor (23, 52) powered to take measurements of a surrounding physical magnitude and a memory zone (26) for storing the measured physical magnitude values. The electronic circuits of the device are capable of operating the analogue display members, in an operating mode called the historic mode, such that at least one of them indicates the change in the stored value as a function of time opposite suitable graduations (8, 9, 33, 42, 51) of the device.

Abstract: The present invention proposes an electronic dive watch (10) including a water resistant case (12) containing a watch movement (15) on which there is mounted a dial (16) provided with at least one first and one second coaxial hand (18, 20), each hand (18, 20) being driven independently by an associated motor (32, 34), of the type wherein the watch movement (15) includes an electronic circuit (30) that controls the first and second hands (18, 20) in accordance with a first operating mode in which each hand (18, 20) indicates a distinct item of data and in accordance with a second operating mode, called the dive mode, in which at least the first hand (18, 20) indicates an instantaneous depth value (Pi), characterized in that, in the dive mode, the first and second hands (18, 20) are controlled such that they simultaneously indicate the same instantaneous depth value.

Abstract: There is disclosed a portable electronic device (1), particularly of the wristwatch type, comprising at least first and second analogue display members, a sensor (23, 52) powered to take measurements of a surrounding physical magnitude and a memory zone (26) for storing the measured physical magnitude values. The electronic circuits of the device are capable of operating the analogue display members, in an operating mode called the historic mode, such that at least one of them indicates the change in the stored value as a function of time opposite suitable graduations (8, 9, 33, 42, 51) of the device.