Abstract: A coupling device for timepieces that includes an entry wheel, a coupling wheel, and a first exit wheel. The coupling wheel is disposed substantially coplanar to the plane of rotation of the entry wheel and of the first exit wheel and is adapted to tilt relative to the plane of rotation to occupy a first coupling position in which the coupling wheel meshes with the first exit wheel and a second coupling position in which the coupling wheel is decoupled from the first exit wheel. The device also includes a movable element to control the change of position between the first and the second position of the coupling wheel. The coupling wheel defines an axis of rotation that can be inclined relative to the normal to the plane of rotation of the entry wheel and of the first exit wheel by being mounted pivotably at each of the ends thereof.

Abstract: A coupling device for timepieces that includes an entry wheel, a coupling wheel, and a first exit wheel. The coupling wheel is disposed substantially coplanar to the plane of rotation of the entry wheel and of the first exit wheel and is adapted to tilt relative to the plane of rotation to occupy a first coupling position in which the coupling wheel meshes with the first exit wheel and a second coupling position in which the coupling wheel is decoupled from the first exit wheel. The device also includes a movable element to control the change of position between the first and the second position of the coupling wheel. The coupling wheel defines an axis of rotation that can be inclined relative to the normal to the plane of rotation of the entry wheel and of the exit wheel by being mounted pivotably at each of the ends thereof.

Abstract: A zero-rest device for a timepiece, including first and second control mechanisms, two zero-reset cams, and two corresponding zero-reset hammers configured to cooperate with the cams. The device also includes two hammer springs exerting a pre-stress force causing a hammer to pivot in the direction of its corresponding cam, a winding and release mechanism and a locking mechanism. The winding and release mechanism is configured to wind the hammer springs during a first phase of an actuation of the first control mechanism and to cooperate, during a second phase of this actuation, with the locking means, such that the locking means passes from a rest position in which the locking means holds the hammers to a release position in which the locking means releases the hammers, which come, in each case under the action of the corresponding hammer spring, into the positions thereof of cooperation with the corresponding cam.

Abstract: A zero-rest device for a timepiece, including first and second control mechanisms, two zero-reset cams, and two corresponding zero-reset hammers configured to cooperate with the cams. The device also includes two hammer springs exerting a pre-stress force causing a hammer to pivot in the direction of its corresponding cam, a winding and release mechanism and a locking mechanism. The winding and release mechanism is configured to wind the hammer springs during a first phase of an actuation of the first control mechanism and to cooperate, during a second phase of this actuation, with the locking means, such that the locking means passes from a rest position in which the locking means holds the hammers to a release position in which the locking means releases the hammers, which come, in each case under the action of the corresponding hammer spring, into the positions thereof of cooperation with the corresponding cam.

Abstract: A mechanism for indication of the lunar phases, in particular for a mechanical watch, including a moon disk and a dial having a substantially semi-circular aperture. The moon disk is rotated in such a way as to display the indications inscribed on the moon disk through the aperture in order to indicate the lunar phases. In addition, the mechanism comprises at least one first occultation disk housed rotatably, at least in part, between the moon disk and the dial, and a gear train which drives the at least first occultation disk in such a way that the indications inscribed on the moon disk are obscured, at least in part, during specific phases of operation of the mechanism in such a manner that the indications appearing through the aperture correspond substantially to the natural appearance of the moon during the entire lunation. The invention also relates to a watch piece comprising such an indication mechanism.

Abstract: A mechanism for indication of the lunar phases, in particular for a mechanical watch, including a moon disk and a dial having a substantially semi-circular aperture. The moon disk is rotated in such a way as to display the indications inscribed on the moon disk through the aperture in order to indicate the lunar phases. In addition, the mechanism comprises at least one first occultation disk housed rotatably, at least in part, between the moon disk and the dial, and a gear train which drives the at least first occultation disk in such a way that the indications inscribed on the moon disk are obscured, at least in part, during specific phases of operation of the mechanism in such a manner that the indications appearing through the aperture correspond substantially to the natural appearance of the moon during the entire lunation. The invention also relates to a watch piece comprising such an indication mechanism.