A winding mechanism is for a timepiece including at least one first and one second power accumulators. The winding mechanism includes a winding stem, a winding pinion and a sliding pinion having face gear toothings, facing one another. The winding stem and the sliding pinion occupy the same axial winding position. The winding mechanism includes a coupling device which cooperates with the winding pinion and is provided to occupy a first coupling position for coupling the winding pinion and the first power accumulator when the winding stem is turned in one direction, the second power accumulator being uncoupled, without any contact with the coupling device, and a second coupling position for coupling the winding pinion and the second power accumulator when the winding stem is turned in the other direction, the first power accumulator being uncoupled, without any contact with the coupling device.

Universal device (1000) for the winding and time-setting of a watch (1) with oscillating resonator (2), which comprises:

rewinding and state correction means, comprising an automatic winding mechanism (304) for a mechanical or automatic watch, which comprises at least one watch reception support (305),

state measurement means (303) relative to a reference clock (1001), comprising a viewing system (1002),

stoppage monitoring means (500) to observe the stoppage of a resonator (2), and control means (900) arranged to then identify the stoppage time displayed by said watch (1) in the stoppage position thereof, to compute the time remaining until a synchronisation between the actual time indicated by said clock (1001) and said stoppage time, and, when said remaining time has elapsed, to activate said automatic winding mechanism (304) for rewinding the power storage means of said watch (1).

A chronograph mechanism includes an energy accumulator, a regulating system, and a gear train connecting the energy accumulator to the regulating system. The energy accumulator is formed by a strip-spring and includes a device for driving the gear train arranged to regulate the torque delivered by the strip-spring.

A push button capable of improving shock resistance and a timepiece equipped therewith are provided. This push button includes an operation member having a shaft section inserted into a through hole of a case and a head section provided on the outer end of the shaft section, and an elastic member which presses the head section toward the outside of the case or is elastically deformed, and this elastic member includes a buffer section that buffers a pressure externally applied to the head section which is greater than a predetermined pressure. Accordingly, when a pressure greater than the predetermined pressure is applied to the head section, the head section comes in contact with the buffer section while elastically deforming the elastic member so as to buffer the pressure. By this structure, shock resistance is improved.

A mechanism for winding a timepiece including at least first and second energy accumulators, the winding mechanism including a winding stem, a winding pinion and a sliding pinion having face gear toothings, arranged to allow the winding pinion to be driven by the sliding pinion in both directions of rotation of the winding stem, the winding stem and the sliding pinion occupying the same axial winding position. The winding stem is housed inside a bottom plate so that the winding pinion is operational on either side of the winding stem with respect to the bottom plate and the winding mechanism includes first and second coupling/uncoupling devices arranged on either side of the winding stem with respect to the bottom plate.

A watch winding device includes a motor driving a winding operation, an acoustic measurer of the oscillator of a watch in the winding position, and a controller analysing the signals transmitted by the measurer and comparing them to desired values that can be parameterized to regulate the operation of the motor by starting this motor when the operating amplitude of the oscillator is less than a minimum value, and by stopping this motor when the working amplitude is higher than a maximum value, these acoustic measurers are fixed in a base behind an sensing opening of the acoustic sensor. The device includes an acoustic duct which places a receiving port, located inside a chamber for housing a watch, in communication with a transmitting port movable by the motor facing this sensing opening.

A coiling limitation device for a timepiece barrel includes at least one non-return notch arranged to cooperate with a sliding flange of the spring of the barrel, which is integrated in a watch including a resonator cooperating with an escapement mechanism. This device includes an acoustic device for the acoustic monitoring of the coiling of the barrel of a watch positioned on a receptacle included by the device, which acoustic devices are arranged to identify a click noise during each start of cooperation between the sliding flange and a notch. The device includes piloting devices arranged to stop the coiling of the barrel at the instant of the perception of the click noise or the repetition of the click noise.

A timepiece including a case middle, a bezel, rotatably mounted on the case middle, and an actuation member including a cover capable of adopting a retracted position and a deployed position relative to the case middle, the cover being provided with a bearing surface actuatable by the user's finger, wherein the cover includes a shoulder distinct from the bearing surface, the shoulder being intended to cooperate with the bezel when the cover is in the retracted position.

A system for retaining a wrist watch in a watch winder having a hollow cylindrical turntable, includes a watch winder cuff defining a first circumferential profile, with two push tabs mounted on the cuff for inserting the cuff into the turntable and removing the cuff from the turntable, and one or more extension cuffs of differing length defining a second circumferential profile shaped to match the first circumferential profile, with a connector disposed thereon for engaging and joining the watch winder cuff and a selected extension cuff together. The connector may include a stub disposed on the extension cuff configured to fit snugly inside a depression on the watch winder cuff, or a hollow sleeve extending forwardly from the extension cuff and being configured to fit snugly over the watch winder cuff body to join the watch winder cuff and extension cuff together. The watch winder cuff preferably has an axial length of about one inch and the extension cuff, when joined to the watch winder cuff, preferably increases the axial length to about 2.25 inches to about 2.75 inches, depending on the size of the extension cuff. Both the watch winder cuff and the extension cuffs are made of compressible foam material such that the watch winder cuff and the extension cuffs are axially compressible under hand force.

A device is disclosed for verifying the state of a watch and resetting it to the correct time. In a case of the device, a watch can be disposed on a watch support, which can be moved from a position without measurement to a measurement position in a vision system, or vice versa. In a position without measurement, the watch on its support can be observed from the outside of the case of the device through at least one electronic shutter activated or an optical valve activated to be in a transparent state, whereas in the measurement position, the electronic shutter or the optical valve is deactivated to be made opaque.