A date and moon phase display mechanism for watches, including a date ring with an inner toothing arranged to be driven by a timepiece movement, or arranged to cooperate with a date ring with an inner toothing of a timepiece movement, this mechanism including a moon display wheel set held in position by a moon jumper, this mechanism including drive devices, which are actuated by this inner toothing during each rotation of this date ring, and which are arranged to drive this moon display wheel set by a first constant angular pitch during each this rotation of this date ring.

A device for selection of a combination of motifs for a timepiece, including an inner disc, and a coaxial outer disc, the inner disc having a smaller diameter than the outer disc, the discs including angular sectors of the same size, at least two angular sectors of each disc bearing a motif on their periphery; a device for actuation permitting rotation of the inner disc, and a gear device for coupling the two discs according to a reduction ratio; a dial extending opposite the inner disc, the dial including an aperture to put a motif of the inner disc and a motif of the outer disc into correspondence, such that a complete rotation of the inner disc gives rise to a rotation of the outer disc by one angular sector, the size of the aperture being sufficiently large for each motif of the outer disc to be in correspondence successively with all the motifs of the inner disc, when the inner disc is rotated.

A timepiece display mechanism with an instantaneous jump function, including a Maltese cross mechanism with an annular ring controlling, in part of its travel, the pivoting of a planet wheel set and driven by a timepiece movement via a cam wheel set arranged to move the annular ring from an activated position to a deactivated position in an instantaneous displacement in order to pivot a planet wheel set, and vice versa in a controlled return slower than the instantaneous displacement, the cam wheel set includes a coaxial cam and plate including a slot for driving an eccentric finger of the cam which controls the pivoting of a driver driving the annular ring between two extreme activation and deactivation positions, the slot allowing a clear jump of the driver in the deactivation position, and a longer reactivation time.

Disclosed is a timepiece mechanism which has a mobile including a tooth of a first type and a tooth of a second type, and a pawl that is intended to move the mobile by at least one step on each actuation and has a travel that is liable to move the mobile by two steps on each actuation. This timepiece mechanism has a correction mobile designed to define different paths of the pawl, depending on the state thereof, the pawl and the correction mobile being designed such that, on each actuation of the pawl: the pawl moves the mobile by one step; and the pawl moves the mobile by an additional step only when the correction mobile is in a predefined state and the tooth of the second type is situated along the travel of the pawl.

A timepiece mobile for a semi-instantaneous jump mechanism, including a stop member, an elastic return device, and a drive wheel including, around an axis a hub for guiding this movable stop member with respect to the drive wheel and including a disengageable stop finger movable between a wound position where its radial extension is maximum with respect to the axis, and an unwound position where its radial extension is minimal with respect to the axis, this stop finger being moved away from the axis by the elastic return device, and the stop member including a housing the walls of which are arranged to bearingly cooperate, during the winding of the elastic return device with a contact surface that this elastic return device includes to limit the value of the winding and to limit the deformation of the elastic return means to its elastic range only.

A timepiece mechanism includes a first energy source with a regulating member, a second independent energy source, a control member driven by the second energy source, and a blocking device controlled by the first energy source to block the second energy source and release it to allow the control member to be displaced by jumps powered by the second energy source. The blocking device includes first and second mobile parts kinematically interconnected, the first mobile part including a drive device, the second mobile part including a stopping device; a rotating drive member connected to the first energy source and cooperating with the drive device to displace the mobile parts, alternately in opposite directions; and a rotating blocking member connected to the second energy source and cooperating with the stopping device to be blocked by the second mobile part and released at the determined times by second mobile part movement.

A timepiece mechanism includes a first energy source with a regulating member, a second independent energy source, a control member driven by the second energy source, and a blocking device controlled by the first energy source to block the second energy source and release it to allow the control member to be displaced by jumps powered by the second energy source. The blocking device includes first and second mobile parts kinematically interconnected, the first mobile part including a drive device, the second mobile part including a stopping device; a rotating drive member connected to the first energy source and cooperating with the drive device to displace the mobile parts, alternately in opposite directions; and a rotating blocking member connected to the second energy source and cooperating with the stopping device to be blocked by the second mobile part and released at the determined times by second mobile part movement.

A timepiece indexing element cooperating coaxially with a component including an indexing relief element defining indexing positions, including a first bearing surface cooperating in abutment with the component, elastic return device exerting a radial thrust on this component to press it onto this first bearing surface, and indexing device cooperating with the indexing relief element, these elastic return devices include at least a first elastic arm including a first indexing surface comprised in this indexing device and arranged to exert a radial thrust force on the component and, at least a second elastic arm arranged to exert a radial thrust force on the first elastic arm.

A timepiece display mechanism with an instantaneous jump function, including a Maltese cross mechanism with an annular ring controlling, in part of its travel, the pivoting of a planet wheel set and driven by a timepiece movement via a cam wheel set arranged to move the annular ring from an activated position to a deactivated position in an instantaneous displacement in order to pivot a planet wheel set, and vice versa in a controlled return slower than the instantaneous displacement, the cam wheel set includes a coaxial cam and plate including a slot for driving an eccentric finger of the cam which controls the pivoting of a driver driving the annular ring between two extreme activation and deactivation positions, the slot allowing a clear jump of the driver in the deactivation position, and a longer reactivation time.

A timepiece movement includes: an hour wheel and pinion; a minute wheel and pinion; a winding stem; a time difference correction train; a date indicator; and a date change mechanism. The hour wheel and pinion includes an hour wheel that rotates with the minute wheel and pinion, an hour jumper, an hour jumper pinion, and an hour wheel body that turns with the hour wheel via the hour jumper and hour jumper pinion, and turns with the time difference correction train. The date change mechanism includes a date change wheel that turns with the hour wheel body, a date change lever, a date change cam that flexes the date change lever by rotating with the date change wheel, and turns in response to the flexed date change lever spring force, and a date change pawl that rotates with the date change cam, and advances the date indicator.