Abstract: A middle part of a timepiece case includes an exterior element secured to the middle part on a securing area by an elastic securing structure. The middle part includes an aperture opening onto the securing area at the securing structure allowing a user to act on and deform the securing structure and to separate the exterior element from the middle part. The securing structure includes a male part including two hooks, one of which is flexible, arranged on one of faces of the exterior element and a female part arranged on the middle part including a groove. The male part cooperates elastically with the female part so that the two hooks are inserted into the groove to secure the exterior element to the middle part. The aperture opens into the female part, allowing the user to act on the flexible hook to separate the exterior element from the middle part.

Abstract: A corrector (1) for a function indicator (20) for a movement (100) including: a first control mechanism (30) for a first function, in a let down (31) or wound (32) position, a second control mechanism (40) for a second function, in a let down position (41) or release control position (42) followed by a return to the preceding position, and a display indicator (20) for a third function. First mobile part (50) driven by the first control mechanism (30) occupies a letting down (51)/winding (52) position, when the mechanism occupies the let down (31)/wound (32) position. Second mobile part (60) actuating the indicator (20) is driven by the second control mechanism (40) changing into the control position (42) when the first mobile part (50) is in a winding position (52) and cooperates with this latter in the letting down position (51), under the action of return mechanism (70).

Abstract: Clasp comprising a cover connected to a first bracelet strand and to a second bracelet strand, a connecting means being inserted between the second bracelet strand and the cover of the clasp, the connecting means comprising an end link sliding between a first position in which it is engaged in the cover of the clasp, and a second position in which it is outside the cover of the clasp, the end link comprising a push-button which causes a toothed element to change from a first position, in which the toothed element is in mesh with a rack toothing, to a second position, in which the toothed element is released, the end link being provided with an arresting means preventing the removal of the end link from the cover of the clasp, the arresting means comprising at least one lug, which projects into a groove arranged in the bottom of the cover and which defines two end stop members.

Abstract: The invention relates to a metal pivot pin including a pivot at each of its ends, wherein the metal is an austenitic steel, an austenitic cobalt alloy or an austenitic nickel alloy in order to limit the sensitivity of the pin to magnetic fields and in that at least the outer surface of one of the two pivots is hardened to a predetermined depth relative to the rest of the pin in order to harden the pivot(s). The invention concerns the field of timepiece movements.

Abstract: An adjustable link for a bracelet, including first and second half links longitudinally moveable via cooperation of a guide and a complementary guide, and captived by cooperation of a stopping mechanism and a complementary stopping mechanism. The first half link includes a longitudinal finger with a locking mechanism including a radial elastic return moveable between folded and unfolded positions, and the second half link includes a longitudinal channel allowing the finger to pass in only one of the folded or unfolded positions, and, in proximity to the channel, a complementary locking mechanism cooperating, in at least one locking position, with the locking mechanism in the other of the folded or unfolded positions, the locking mechanism and complementary locking mechanism together defining at least two of the longitudinally separate locking positions.

Abstract: Push button for a timepiece for correcting the time display associated with a decompression valve within a single control device. It essentially includes a first push button return spring (10) followed by a second spring (13) arranged to bend and act as a valve spring.

Abstract: The invention concerns a bracelet clasp of the type having an unfolding buckle, comprising first and second strips hinged to each other via a first of the respective ends thereof, between a closed position for wear, and at least one open position, the first strip carrying a fastening for a first bracelet strand, the second, bottom strip carrying a loop at the second end thereof defining a recess for a second bracelet strand and carrying a lug intended to be inserted in a suitable hole in the bracelet strand to define a point of anchorage of said bracelet to the clasp, the clasp being characterized in that said loop has a plurality of sites, substantially aligned along the longitudinal direction of the bracelet, each of which is capable of cooperating with said lug to ensure the assembly thereof to said loop and to define a predefined position of the point of anchorage associated with a predefined usable length of the bracelet.

Abstract: A bracelet clasp including an easily manipulated device of simple structure for adjusting the usable length of the bracelet by a firm adjustment, including when the clasp is open. The adjusting device is separate from the locking member, and the lock is arranged to move from its closed state to its open state by the user acting on the control member of the locking member such that the adjusting device is capable of being shifted independently of the open or closed state of the clasp. The invention has a discrete structure, since it is actuated by the control member already provided for unlocking the clasp, although it is separate from the locking member of the clasp, and this additionally allows the length of the bracelet to be adjusted even when the clasp is in its closed state.

Abstract: Clasp for a watch bracelet including a cover (2) connected on a first side to a first bracelet strand (6) and to a second bracelet strand (10) on a second side, with the insertion of a folding system (4) between the second bracelet strand (10) and the cover (2) of the clasp (1), wherein said folding system (4) includes first and second links (12, 14), the first link (12) is hinged by a first end to the second bracelet strand (10) and by a second end to the second link (14), the second link (14) is hinged in turn to the cover (2) of the clasp (1), the folding system (4) is moveable between a first position in which the first and second links (12, 14) are superposed on each other inside the cover (2) of the clasp (1), and a second position in which the first and second links (12, 14) are unfolded, said clasp (1) being characterized in that, in the first position of the folding system (4), the first link (12) is held folded down on the second link (14), the first link (12) therefore including first and second el

Abstract: An orientable screwdown crown includes a cover and a device for adjusting the angular orientation of the cover in relation to a watch centrepart. The device for adjusting the angular orientation includes a coupling member and an indexing unit between the cover and the coupling member as well as a restoring unit, which endeavour to rotationally fix the cover and the coupling member. The indexing unit includes a first tooth arrangement arranged on the coupling member.

Abstract: The present invention concerns a middle part (20, 200) of a timepiece case comprising at least one exterior element (30), said exterior element being secured to the middle part on a securing area by an elastic securing means (70), characterized in that said middle part further includes at least one aperture (26, 206) opening onto the securing area at said elastic securing means, enabling the user to act on and deform said elastic securing means and to separate the exterior element (30) from said middle part.

Abstract: An adjustable link for a bracelet, including first and second half links longitudinally moveable via cooperation of a guide and a complementary guide, and captived by cooperation of a stopping mechanism and a complementary stopping mechanism. The first half link includes a longitudinal finger with a locking mechanism including a radial elastic return moveable between folded and unfolded positions, and the second half link includes a longitudinal channel allowing the finger to pass in only one of the folded or unfolded positions, and, in proximity to the channel, a complementary locking mechanism cooperating, in at least one locking position, with the locking mechanism in the other of the folded or unfolded positions, the locking mechanism and complementary locking mechanism together defining at least two of the longitudinally separate locking positions.

Abstract: A bracelet clasp with an unfolding buckle includes a lever (2) pivotably mounted on a cap (1) by a first hinge (3a), the lever controlling a bolt (4) which is in turn mounted on the cap (1) by a second hinge (3b) distinct from the first. The bolt (4) is arranged to cooperate with a hook (22) fitted to the first arm (8) of the clasp. Elastic mechanism (5) is arranged for keeping the lever (2) in a non-raised position and the bolt (4) engaged with the hook (22) when the lever is not manually activated.

Abstract: Device for securing a first element of a watch 1 having a first threaded portion 11 to a second watch element 2 including a second threaded portion 22, including an intermediate element 3 for the angular orientation of the first element 1 relative to the second element 2. The intermediate element 3 includes a third threaded portion 31, arranged for cooperating with the first threaded portion 11 of the first element 1, and a fourth threaded portion 32, arranged to cooperate with the second threaded portion 22 of the second element 2. The thread pitches of the third threaded portion 31 and fourth threaded portion 32 are different.