System (10) including (i) a pawl device (110) for a first wheel (6) of a first part (301) of a drivetrain (300) for winding a mainspring (7); (ii) a clutch device (120) for engaging a second part (302) of a drivetrain (300) for winding the mainsprin (7) with the first part (301) of the drivetrain (300) for winding the mainspring (7); and (iii) a coupling device (130) for coupling the pawl device and the clutch device, particularly a device (130) for coupling the states of operation of the pawl device and of the clutch device.

The timepiece comprises a timekeeping mechanism and a switching device arranged to switch this timekeeping mechanism between two states. The switching device comprises a movable switching organ and a rotary control organ arranged to be stepwise driven in order to successively occupy a plurality of distinct angular positions about its axis of rotation. The movable switching organ and the rotary control organ respectively support a first magnetic structure and a second magnetic structure arranged so that, in a first angular position of the rotary control organ, a first magnetic force acts on the switching organ in a given direction, and so that, in a second angular position of the rotary control organ, a second magnetic force acts on the switching organ in the opposite direction.

A chronograph mechanism (10) for a horological movement (1) having a chronograph train (20) including: a seconds counter (210), forming a first chronograph counter, having a seconds counter arbor (211) carrying a seconds counter display (214), a seconds counter wheel (212), and a drive finger (215) configured to drive an inter-counter wheel (23) in steps on each revolution of the seconds counter wheel; a second chronograph counter (220) having a second chronograph counter arbor (221) carrying a second chronograph counter display (224), and a second chronograph counter wheel (222) set in motion by said inter-counter wheel. A position-holding device (240) holds the second chronograph counter display in position, and is configured to ensure that the second chronograph counter display is held in position only when the second chronograph counter display is in an angular reference position and when the chronograph mechanism is stopped.

A control system for a rotating element of a timepiece including a control element for actuating the rotating element and a transmission device between the control element and the rotating element. In the control system a gearing device includes a hybrid gearing device including a first element, which is movable around a first rotation axis and including a drive runner made from elastomeric material, and a second element, which is movable around a second rotation axis and including a rolling tooth system. The drive runner cooperates with the rolling tooth system by friction.

The timepiece mechanism comprises a rotating wheel set, a support element, a pivoting member mounted on the support element and magnetic return means for returning one portion of the pivoting member against a surface of the rotating wheel set. The return means comprise a first magnet carried by the pivoting member and a second magnet carried by the support element. The first and second magnets are arranged such that, in normal operation, the interaction of their respective magnetic fields generates a magnetic force oriented to return said pivoting member portion towards said rotating wheel surface. At least one of the first and second magnets is arranged to permit reversal of its polarity, preferably with the aid of a tool, and thereby of the direction of the magnetic force acting on the pivoting member, said magnetic force then tending to move said pivoting member portion away from said rotating wheel set surface, which makes it easy to handle the various elements of the timepiece mechanism.

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.

The invention relates to a timepiece transmission device (100), particularly for a timepiece mechanism (110) and specifically for an automaton chain (5) of a timepiece movement (120). Said timepiece transmission device includes: a first device (1), particularly a first freewheel device (1), for unidirectionally connecting a first portion (1a) to a second portion (1b); and a brake (2) arranged so as to brake, particularly by means of friction, the first portion in relation to the second portion.

The invention relates to a timepiece transmission device (100), particularly for a timepiece mechanism (110) and specifically for an automaton chain (5) of a timepiece movement (120). Said timepiece transmission device includes: a first device (1), particularly a first freewheel device (1), for unidirectionally connecting a first portion (1a) to a second portion (1b); and a brake (2) arranged so as to brake, particularly by means of friction, the first portion in relation to the second portion.

A shock absorbing coupling device for a timepiece, includes a coupling wheel (2) able to take a coupled position and an uncoupled position, a coupling member (1) bearing the coupling wheel and a coupling cam (6) engaging with the coupling member (1) to define the coupled position and uncoupled position of the coupling wheel (2). The device also includes a locking member (12) rigidly attached to the coupling cam (6) and an intermediate member (9) controlled by the coupling member (1). The intermediate member (9) is intended to engage with the coupling member (1) and the locking member (12) to prevent or limit the movement of the coupling member (1) under the effect of a shock when the coupling wheel (2) is in the coupled position, to thus avoid the coupling wheel (2) leaving the coupled position.

A shock absorbing coupling device for a timepiece, includes a coupling wheel (2) able to take a coupled position and an uncoupled position, a coupling member (1) bearing the coupling wheel and a coupling cam (6) engaging with the coupling member (1) to define the coupled position and uncoupled position of the coupling wheel (2). The device also includes a locking member (12) rigidly attached to the coupling cam (6) and an intermediate member (9) controlled by the coupling member (1). The intermediate member (9) is intended to engage with the coupling member (1) and the locking member (12) to prevent or limit the movement of the coupling member (1) under the effect of a shock when the coupling wheel (2) is in the coupled position, to thus avoid the coupling wheel (2) leaving the coupled position.