A timepiece movement, including a mechanism including an inertial element arranged to oscillate or pivot about a first axis of pivoting relative to a structure of the movement, and arranged to cooperate directly or indirectly with an energy distribution wheel set that pivots relative to the structure about a second axis of pivoting parallel to or coincident with the first axis of pivoting and subjected to a torque exerted by an energy source, wherein the energy distribution wheel set meshes directly or indirectly with at least one inertia wheel set that pivots about a third axis of pivoting relative to the structure, each inertia wheel set is arranged to pivot in the opposite direction to the energy distribution wheel set, and the total inertia of the inertia wheel sets is comprised between 60% and 140% of the inertia of the energy distribution wheel set.

A micromechanical resonator is provided that enables a smaller total package size with an acceptable quality factor for timing applications. The MEMS resonator includes a vibration portion with a base and three or more vibrating beams extending therefrom. Moreover, the MEMS resonator includes a frame that surrounds a periphery of the vibration portion and a pair of anchor between the vibrating beams for stabilizing the vibration portion within the frame. Furthermore, support beams couple the base of the vibration portion to the pair of anchors.

Regulating members for a mechanical timepiece, specifically a system based on magnetic interaction between a resonator, in a form of a tuning fork for example, and an escape wheel, as a magnetic escapement. In the system plural areas of magnetic interaction between the resonator and the escape wheel are arranged such that torques produced at the escape wheel by the interactions compensate each other if the escape wheel is not synchronized at the frequency of the resonator. This results in negligible torque in the escape wheel when the escape wheel rotates slowly in a direction of an arrow or opposite direction. This allows the timepiece to start with a low mainspring torque and without any start procedure or device and provides better resistance of the timepiece against a loss of synchronization in event of a shock.

Regulating members for a mechanical timepiece, specifically a system based on magnetic interaction between a resonator, in a form of a tuning fork for example, and an escape wheel, as a magnetic escapement. In the system plural areas of magnetic interaction between the resonator and the escape wheel are arranged such that torques produced at the escape wheel by the interactions compensate each other if the escape wheel is not synchronized at the frequency of the resonator. This results in negligible torque in the escape wheel when the escape wheel rotates slowly in a direction of an arrow or opposite direction. This allows the timepiece to start with a low mainspring torque and without any start procedure or device and provides better resistance of the timepiece against a loss of synchronization in event of a shock.

Movement including an escapement mechanism and a resonator including an inertial element subjected to the action of a flexible gimbal and cooperating with an escape wheel set pivoting about a main axis, which includes driving means cooperating in a continuous transmission of motion with complementary means of the inertial element in every angular position of the latter, the flexible gimbal tending to return these complementary means towards the main axis, and including elastic return means about axes orthogonal to the main axis and restricting the mobility of the inertial element in two rotational degrees of freedom, about a fixed position of the centre of inertia of the inertial element with respect to a plate.

Movement including an escapement mechanism and a resonator including an inertial element subjected to the action of a flexible gimbal and cooperating with an escape wheel set pivoting about a main axis, which includes driving means cooperating in a continuous transmission of motion with complementary means of the inertial element in every angular position of the latter, the flexible gimbal tending to return these complementary means towards the main axis, and including elastic return means about axes orthogonal to the main axis and restricting the mobility of the inertial element in two rotational degrees of freedom, about a fixed position of the centre of inertia of the inertial element with respect to a plate.

The invention relates to a timepiece movement comprising a first regulating member and a first escapement connected by a first train to a first energy source, the first train, the first escapement, the first regulating member and the first energy source defining a first assembly, a second regulating member and a second escapement connected by a second train to a second energy source, the second train, the second escapement, the second regulating member and the second energy source defining a second assembly, at least one differential gear provided to ensure a kinematic connection between the first assembly and the second assembly, and means for displaying the current time. According to the invention, the timepiece movement includes means for stopping and allowing operation of one of the two regulating members, and the differential gear carries the time display means to display the time regardless of which regulating member is operating.

The invention relates to a timepiece movement comprising a first regulating member and a first escapement connected by a first train to a first energy source, the first train, the first escapement, the first regulating member and the first energy source defining a first assembly, a second regulating member and a second escapement connected by a second train to a second energy source, the second train, the second escapement, the second regulating member and the second energy source defining a second assembly, at least one differential gear provided to ensure a kinematic connection between the first assembly and the second assembly, and means for displaying the current time. According to the invention, the timepiece movement includes means for stopping and allowing operation of one of the two regulating members, and the differential gear carries the time display means to display the time regardless of which regulating member is operating.

The present invention concerns regulating members for a mechanical timepiece, specifically a system based on the magnetic interaction between a resonator, in the form of a tuning fork for example, and an escape wheel, called a magnetic escapement. The system is characterized in that there are several areas of magnetic interaction between the resonator and the escape wheel which are arranged such that the torques produced at the escape wheel by these interactions compensate each other if the escape wheel is not synchronized at the frequency of the resonator. This results in negligible torque in the escape wheel when the latter rotates slowly in the direction of the arrow or the opposite direction. This allows the timepiece to start with a low mainspring torque and without any start procedure or device and provides better resistance of the timepiece against a loss of synchronization in the event of a shock.

A device regulating motion of a mechanical horological movement includes: a frame; a resonator attached to the frame and including a first annular magnetic structure including N1 magnets arranged regularly in a circle and a resilient structure; a second annular magnetic structure including N2 magnets defining a central axis about which the structure rotates, N2 being different than N1. The resonator is configured so that a resonant mode in which the first magnetic structure is subject to curvilinear, or substantially circular, translation about the central axis may be excited by rotation of the second magnetic structure. The two magnetic structures define a magnetic cycloid gear such that the regulating device incorporates a reducer of frequency between the resonance frequency and the rotational frequency of the second magnetic structure which is rigidly connected to an escapement wheel.