Abstract: The timepiece shaft (1), in particular a shaft for a balance (2) or a shaft for an escapement wheel or a pallet shaft, includes at least one pivot (12). The timepiece shaft (1) has a surface of revolution about a first rotation axis (A1) the generatrix (G) of which in a plane (P) passing through the first rotation axis (A1) is curved, this surface of revolution extending at least at the level of the pivot, the pivot being defined as the zone of the timepiece shaft (1) intended to come into contact with a pivot bearing (50), in particular with a pivot jewel (50).

Abstract: The timepiece drive device (100), notably for a system (300) for displaying time-based or time-derived information, in particular for an instantaneous-jump calendar system, includes an input mobile (10) which includes a first toothing (10a), a main wheel (11) which includes a second toothing (11a) only over part of the periphery of the main wheel, the second toothing being in meshing engagement with the first toothing, a cam (12) which is connected to the main wheel (11), notably connected to the main wheel (11) with minimum clearance, in particular fixed to the main wheel (11), and which has a cam profile (12a, 12b, 12c), a cam follower (21) which interacts with the profile (12a, 12b, 12c), and an energy accumulator (22) which elastically returns the cam follower against the profile (12a, 12b, 12c) of the cam (12).

Abstract: Timepiece driving device (100), in particular for an instantaneous jump calendar system, the device including; an input mobile (13); a main cam (11) having a main cam profile, and connected to the input mobile either (i) with angular backlash or (ii) via a unidirectional coupling; an auxiliary cam (12) connected to the input mobile, and having an auxiliary cam profile; a cam follower (21) adapted to cooperate with the main cam profile and/or with the auxiliary cam profile; and an energy accumulator (22) elastically biasing the cam follower toward the main cam profile and toward the auxiliary cam profile, the timepiece driving device (100) being arranged so that the cam follower (21) comes substantially into contact with the auxiliary cam profile immediately at the end of the driving of the main cam (11) by action of the energy accumulator (22) on the main cam (11) via the cam follower (21).

Abstract: A shock absorber spring (1) for a timepiece (200), extending substantially in a plane (P1) and having a first axis of symmetry (A1) perpendicular to the plane (P1), the spring including at least two first spring-fixing elements (11, 11?, 11?), these first fixing elements each comprising at least a first fixing surface (11a, 11b, 11a?, 11b?, 11a?, 11b?) oriented at least substantially radially relative to the first axis (A1) and towards the first axis (A1).

Abstract: A shock absorber spring (1) for a timepiece (200), extending substantially in a plane (P1) and having a first axis of symmetry (A1) perpendicular to the plane (P1), the spring including at least two first spring-fixing elements (11, 11?, 11?), these first fixing elements each comprising at least a first fixing surface (11a, 11b, 11a?, 11b?, 11a?, 11b?) oriented at least substantially radially relative to the first axis (A1) and towards the first axis (A1).

Abstract: The assembly device is intended for the pivoting attachment of at least two components (M1, M2). It comprises a screw (4) intended to be screwed into a first component (M1) and bearing a guide pin (5) guiding the pivoting of a second component (M2). According to the invention, the pin (5) comprises at least one rotation-prevention zone (540) having a shape designed to collaborate with a zone of corresponding shape of the first component (M1), so as to prevent said pin from rotating.

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: The assembly device is intended for the pivoting attachment of at least two components (M1, M2). It comprises a screw (4) intended to be screwed into a first component (M1) and bearing a guide pin (5) guiding the pivoting of a second component (M2). According to the invention, the pin (5) comprises at least one rotation-prevention zone (540) having a shape designed to collaborate with a zone of corresponding shape of the first component (M1), so as to prevent said pin from rotating.

Abstract: This watch case comprises a middle (1), a tube (3, 23), which is secured to the middle (1) and is provided with a thread, a control crown (C) which is provided with a thread screwed onto the tube (3, 23), the control crown (C) having an external part (10, 20) that has a distinctive mark (S) that is visible from the outside and an internal part (2, 24) housed inside the external part (10, 20) and clamping means (11) for axially holding said external part (10, 20) and said internal part (2, 24) in an angular position determined with respect to the longitudinal axis of said tube. The internal part (2, 24) has first angular indexing means (2a, 24a), the external part (10, 20) having second angular indexing means (10a, 20a), these indexing means being shaped so as to engage axially in one another.

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 watch case comprises a middle (1), a tube (3, 23), which is secured to the middle (1) and is provided with a thread, a control crown (C) which is provided with a thread screwed onto the tube (3, 23), the control crown (C) having an external part (10, 20) that has a distinctive mark (S) that is visible from the outside and an internal part (2, 24) housed inside the external part (10, 20) and clamping means (11) for axially holding said external part (10, 20) and said internal part (2, 24) in an angular position determined with respect to the longitudinal axis of said tube. The internal part (2, 24) has first angular indexing means (2a, 24a), the external part (10, 20) having second angular indexing means (10a, 20a), these indexing means being shaped so as to engage axially in one another.

Abstract: This device comprises a first axial retention shoulder secured to the case, adjacent to a cylindrical seat, a second, opposite axial retention shoulder formed by one face of an annular groove secured to the rim, an annular retention element made of polymer bearing against each of said shoulders, said first shoulder being adjacent to the base of a conical surface, secured to the case, for the axial introduction of said annular retention element engaged with said annular groove. Said annular retention element forms an endless ring whose section is divided in the radial direction into two portions of which one is, perpendicularly to the plane of said endless ring, substantially thinner than the other, these two portions being intended to interact respectively with said first shoulder and second shoulder.

Abstract: This clasp comprises at least two branches (1, 2) articulated on one another via one of their respective ends. One of the free ends of these branches (1, 2) comprises a lever (12, 22, 33) articulated about a shaft (10, 20, 32) parallel to the articulation shaft (3) of said branches (1, 2) and fixedly attached to a hook (17, 27, 33c), the other of the free ends of these branches comprising a coupling element (4, 34) shaped to allow the hook (17, 27, 33c) to engage therewith, to keep the branches (1, 2) in the folded position.

Abstract: This clasp comprises at least two branches (1, 2) articulated on one another via one of their respective ends. One of the free ends of these branches (1, 2) comprises a lever (12, 22, 33) articulated about a shaft (10, 20, 32) parallel to the articulation shaft (3) of said branches (1, 2) and fixedly attached to a hook (17, 27, 33c), the other of the free ends of these branches comprising a coupling element (4, 34) shaped to allow the hook (17, 27, 33c) to engage therewith, to keep the branches (1, 2) in the folded position.

Abstract: A watch case comprising a rotary bezel, first and second angular positioning markings, one set secured to the bezel and the other set to the case middle and elastic means in the form of a closed-loop spring tending to place the positioning markings into engagement with one another. These markings are distributed with numbers of spacings one of which is a multiple of the other and the outlines of which extend in a plane parallel to that of the bezel. Guide means are engaged with the markings having the smallest number of spacings, in order simultaneously to exert on these markings radial pressures directed toward the other markings.

Abstract: This device comprises a first axial retention shoulder secured to the case, adjacent to a cylindrical seat, a second, opposite axial retention shoulder formed by one face of an annular groove secured to the rim, an annular retention element made of polymer bearing against each of said shoulders, said first shoulder being adjacent to the base of a conical surface, secured to the case, for the axial introduction of said annular retention element engaged with said annular groove. Said annular retention element forms an endless ring whose section is divided in the radial direction into two portions of which one is, perpendicularly to the plane of said endless ring, substantially thinner than the other, these two portions being intended to interact respectively with said first shoulder and second shoulder.

Abstract: This watch case comprises a rotary bezel (1, 21), first (2a, 21a) and second (4, 13a, 23a) angular positioning markings, one set (4, 13a, 21a) secured to the bezel (1, 21) and the other set (2a, 23a) to the case middle (B) and elastic means (3, 23) in the form of a closed-loop spring (3, 13, 23) tending to place the positioning markings into engagement with one another. These markings are distributed with numbers of spacings one of which is a multiple of the other and the outlines of which extend in a plane parallel to that of the bezel (1, 21). Guide means (1a, 22a) are engaged with the markings (4, 13a, 23a) having the smallest number of spacings, in order simultaneously to exert on these markings radial pressures directed toward the other markings (2a, 21a).

Abstract: A bracelet clasp having two branches (1, 2) which are articulated to one another by a respective first one of their ends in order to make it possible to fold a first one of these branches over and/or into the second of said branches, and to unfold it in order to place it substantially in the extension of this second branch, while their respective second ends are intended to be connected to two ends of a bracelet. These two branches (1, 2) include mutual attaching structures (4, 10) for holding them in the folded position. The second end of the first articulated branch (1) includes linking structure (9) having parallel axes of articulation, one for connecting these linking structures to this first articulated branch (1) and at least a second one for connecting these linking structures (9) firstly to one end of the bracelet and secondly to an actuating member (18) for exerting a force capable of separating said mutual attaching structures (4, 10).

Abstract: A bracelet clasp having two branches (1, 2) which are articulated to one another by a respective first one of their ends in order to make it possible to fold a first one of these branches over and/or into the second of said branches, and to unfold it in order to place it substantially in the extension of this second branch, while their respective second ends are intended to be connected to two ends of a bracelet. These two branches (1, 2) include mutual attaching structures (4, 10) for holding them in the folded position. The second end of the first articulated branch (1) includes linking structure (9) having parallel axes of articulation, one for connecting these linking structures to this first articulated branch (1) and at least a second one for connecting these linking structures (9) firstly to one end of the bracelet and secondly to an actuating member (18) for exerting a force capable of separating said mutual attaching structures (4, 10).

Abstract: Wristlet comprising at least three rows of links side by side, the links of two lateral rows with the links of the center row forming modular units articulated between them around transverse axles. The two lateral opposed sides of the center link on the one hand and the internal lateral die of the lateral links of each modular unit on the other hand are interdependent with means to fit these links laterally one in each other in a defined position. The organs for articulating the contiguous modular units are associated to locking organs, elements joining these locking organs to the fitting means to maintain the links of each modular unit fitted one in each other.