Abstract: A watch case includes a middle (2, 24, 34), one opening of which is closed by a bezel (8, 18, 28) and/or a crystal (1, 11, 21), or by a back (40). An element for closing the opening is connected to the middle by a resilient metal member (3, 23, 33) having a recessed cross-section defined by the profile of a non-rectilinear wall having a constant thickness, whose ends (3a, 3b) are connected to the periphery of the closing element (1, 11, 21, 18), respectively. The profile of the non-rectilinear wall defines at least one annular fold having an orientation parallel to the plane of the opening, the fold being formed by a curvature whose arc defines an angle of between >90° and 180°, so as to impart to the closing member (1, 11, 21, 18) a freedom of movement relative to the plane of the opening.

Abstract: Device (300; 200) for displaying the time, comprising a time-display member (A1, A2) and a switchover mechanism (100) allowing the time-display member to switch between a first time zone and a second time zone. This switchover mechanism comprises: a first heart piece (3) capable of rotating; a first lever (1) having a first end (1a) designed to collaborate with the first heart piece (3) with a view to causing the display member (A1, A2) to indicate the time in the first time zone; a second lever (2; 42) designed to cause the display member (A1, A2) to indicate the time of the second time zone; a two-position selector member (5) collaborating with the first lever (1), and a control member (P) allowing selection of the first or the second time zone for display. The two-position selector member (5) is designed to collaborate directly with a second end (1b) of the first lever (1).

Abstract: A bracelet strand (1) for a wristwatch has a first end (2) suitable for a connection to a watchcase (29). A comfort pad (10) is arranged on the inner surface of the bracelet strand (1) towards this first end (2). This comfort pad (10) has a longitudinal opening (15).

Abstract: A device (100) for displaying time information with the aid of an indicator member (1), including a cam (2) the profile of which includes a flank (23); a lever (4) driving the indicator member (1); a follower (3) controlling the lever (4), pressed against the cam (2) by first spring means (6), adapted, during movement of the flank (23) in a first direction of movement of the cam (2), to control movement of the lever (4) intended to drive movement of the indicator member (1), characterized in that the follower (3) controlling the lever (4) is adapted to be moved relative to the lever (4) against the return action of second spring means (5) by an action force (F) exerted by the flank (23) of the cam (2) on the follower (3) during movement of the flank (23) in a second direction of movement of the cam (2).

Abstract: This timepiece comprises an indicator dial (40), a days-of-the-month mechanism (1) comprising a days-of-the-month mobile (10) and a stepper drive member (13) for driving the days-of-the-month mobile (10), a months mobile (30) coaxial with the days-of-the-month mobile placed beneath said dial (40) and connected to the days-of-the-month mobile (10) by stepper drive means (12, 20) formed so that the months mobile (30) turns through an angle of 30° each month. The dial (40) has twelve windows (41) that are angularly equidistant and the months mobile (30) supports a distinctive zone (32) of which the trajectory passes through said windows (41) and of which the maximum angular extent is 30° and the minimum angular extent corresponds to that of said windows (41).

Abstract: An oscillator (10) comprising a spiral spring (11) made from a paramagnetic or diamagnetic material and an assembled balance wheel (12) comprising a shaft (13) on which the following elements are fitted: a balance wheel (14), a plate (15) and a collet (16) rigidly connected with said spiral spring (11), characterised in that the maximum diameter (Dmax) of the shaft is less than 3.5, or even 2.5, or even 2 times the minimum diameter (D1) of the shaft on which one of the elements is fitted or in that the maximum diameter (Dmax) of the shaft is less than 1.6, or even 1.3 times the maximum diameter (D2) of the shaft on which one of the elements is fitted.

Abstract: The invention relates to a horological device, in particular a horological movement or timepiece, comprising a winding mechanism and at least one mechanism for correcting at least one indicator member. According to the invention, the aforementioned mechanisms can be actuated by a control stem that can occupy at least two axial positions, each corresponding to the actuation of one of the mechanisms, said control stem (T) comprising: a winder pinion (5) that can engage with the winding mechanism; and a sliding pinion (6) that can be moved axially, both with respect to the control stem (T) and with respect to the frame of the horological device, and can engage with the correcting mechanism.

Abstract: This device for displaying time periods comprises a display element (A), an indicator component (1), a drive component (3) for driving the indicator component (1), an instantaneous-jump cam (6) engaged with the drive component (3), a drive mobile (5) for driving the cam (6) and correction means (4) for coming into direct engagement with the indicator component (1). A one-way connection device (3b, 11, 12) connects the drive mobile (5) to the cam (6). The drive component (3) is engaged with the cam (6) by elastic return means (3d) and guidance means (3b) defining a degree of freedom of the drive component (3) in order to allow the indicator component (1) to move the drive component (3) against the elastic return means (3d) when the latter occupies a position interfering with the movement of the indicator component (1) by the correction means (4).

Abstract: A watch case comprising: a middle (3), a first tube (1) provided with first indexing elements (1a), a control crown (C) including: a cap (4) having a distinctive sign (S) on a front face (4?), and a bushing (5) intended to be connected to the movement of the watch, a second tube (2) adapted to be fastened to the middle (3) and to receive the bushing (5), the control crown (C) and the first tube (1) including respective screwing elements (1b,4b) for screwing them together. Second indexing elements (3a,3a?,3a?) fastened to the middle (3) are provided to cooperate with the first indexing elements (1a) of the first tube (1). The first tube (1) and the second tube (2) are conformed so that fastening the second tube (2) to the middle (3) ensures axial immobilization of the first tube (1) relative to the middle (3).

Abstract: The invention relates to a method for shaping a barrel spring made of a unitary ribbon of metallic glass that comprises calculating the theoretical shape to be given to said unitary ribbon of metallic glass so that each segment, once the spring is fitted in the barrel, is subjected to the maximum bending momentum, shaping said ribbon by imparting bends thereto characteristic of said free theoretical shape in order to take into account a potential reduction of the bends once the ribbon is released, relaxing the ribbon in order to set the shape thereof by heating the same, and cooling down said ribbon.

Abstract: An arrangement for the elastic articulated link between two components of a horological assembly, wherein it comprises at least one link shaft and one spring (25; 25?) working in torsion mode between the two components to exert an elastic return force.

Abstract: This spiral-spring and balance wheel regulating member includes a shaft mounted pivotably on the frame of a timepiece. The spiral spring includes at least one blade, whose inner end is designed to be fixed to the pivot shaft and whose outer end is made in one piece with a member (2) for connection to the frame, the rigidity of this connecting member being substantially greater than that of the spiral. The connecting member (2), on one hand, and the frame (9) or a member (6) for the angular positioning of the regulating member on the frame, on the other hand, both have respective bearing surfaces which are at least partially complementary, and these complementary bearing surfaces are joined.

Abstract: The invention relates to a watch strap strip (1) reinforcement (2) intended to be housed in a casing (3) of the strip made from a flexible material, wherein the reinforcement includes a linking element (4) mechanically connecting: an element (10) for fixing the strip to the watch case to an element (9) for fixing the strip to a closure element.

Abstract: Lever (6) comprising at least a first element (61) for guiding in rotation of a first wheel (1), at least one friction element (62) which is designed to co-operate with an at least substantially cylindrical portion (10c) of the first wheel, and at least one resilient element (63), which is designed to return resiliently the at least one friction element to a state of co-operation with the said portion of the first wheel, notably in contact with the said portion of the first wheel.

Abstract: This bracelet comprises a plurality of articulated elements (1) in which one transverse edge of each element is interlocked in a transverse edge of an adjacent element, a transverse passageway passing at least partially through the adjacent interlocked portions in order to form a bearing (7) in which an articulation member (10) is engaged and is held at least one end of the said transverse passageway. The mid-portion of the said articulation member (10) comprises at least one O-ring placed on the portion of the said articulation member (10) situated inside the said bearing (7) and close to its ends and in jointed contact with the wall of the said transverse passageway.

Abstract: The invention relates to a watch with a rigid casing-up, comprising: a middle (1); a bottom (2); a movement (3, 3bis, 3ter, 3quater, 41); and a casing-up ring (4, 4bis, 4ter, 42) in contact with the middle (1). The casing-up ring (4, 4bis, 4ter, 42) has an inner peripheral face (8, 17) and the movement (3, 3bis, 3ter, 3quater, 41) is secured to an outer peripheral face (7, 13, 18, 18bis), said inner (8, 17) and outer (7, 13, 1, 18bis) peripheral faces being in contact with each other in the Z and Z? regions thereof. Said watch is characterized in that it also comprises a tightening element (5, 5bis) provided for exerting pressure on the casing-up ring (4, 4bis, 4ter, 42) or the movement (3quater). The invention also relates to a method for casing-up such a watch.

Abstract: The present invention relates to a hairspring for a timepiece hairspring-balance oscillator, which can be produced, in particular, from a low-density material such as silicon, diamond or quartz, and to a method of manufacturing such a hairspring. According to the invention, this hairspring comprises at least one leaf (2) the cross section of which has a thickness and a height and its characterizing feature is that the leaf (2) comprises a plurality of apertures (3) extending in the heightwise direction of the leaf and alternating with bridges (5). The invention also relates to a method of manufacturing such a hairspring.

Abstract: A bracelet clasp comprising first and second movable leaves (10, 20) pivoted about a central blade (3), that can occupy a first closed position suitable for holding a bracelet around the wrist of its wearer and a second open position suitable for removing the bracelet from the hand of its wearer, characterized in that the two movable leaves (10, 20) comprise at least one element for interaction between them which acts on the second movable blade when the first movable blade is actuated, in the closing and/or opening phase of the clasp.

Abstract: A device for measuring the torque of a hairspring for a balance wheel-hairspring oscillator includes an arbor on which a seat is arranged, a benchmark element, pivoting means for pivoting the arbor, means for keeping the outer end of the hairspring fixed relative to the arbor during measurement, elastic elements provided on a portion of the seat, and means for acting on the elastic elements. The inner end of said hairspring is secured to a collet, the diameter of the seat of the arbor is of a dimension to allow a driving connection by friction with the wall of an axial aperture of the collet, and the elastic elements are formed to bring, under the action of the action means, the section of the portion of the seat forming the driving connection from a greater dimension to a smaller dimension than that of the axial aperture of the collet.

Abstract: This timepiece is furnished with a direct impulse escapement comprising a locking lever (2) for locking the escapement wheel furnished with two locking pallets (2a, 2b), with a fork (2c) and with a guard pin (2d). The guard pin is mounted so as to pivot on the fork about an axis parallel to the pivoting axis of the locking lever (2). It comprises displacement means (2d1, 2d2, 2d3), designed to engage with drive means secured to said frame, so as to amplify the angular displacement of the guard pin (2d), caused by the locking lever (2) passing from one to the other of its two positions. This invention also applies to the guard pin of a pallet assembly of an indirect impulse escapement.