Abstract: A dial for a timepiece, preferably a watch, the dial being provided with a relief portion which is made as an assembly of pieces on different levels, juxtaposed on a base, such that the relief portion is formed by the upper surfaces of the pieces. A method for manufacturing the dial with several separate pieces, the upper surfaces of the pieces being subjected to a polishing step and/or possibly an enameling step. The pieces are then cut along a defined contour and then assembled edge-to-edge on a base, so as to create the relief portion.

Abstract: A wristlet clasp (100), of the folding buckle type, including first and second blades (1, 2) hinged relative to each other, the first blade (1) further including locking means for holding the first and second blades (1, 2) in their closed position at its second end, and the second blade (2) carrying a member for fastening a first wristlet strand at its second end. The first and second blades are hinged together by movable blades (3, 4) by a first of their respective ends, the hinged blades being connected to the first and second blades via a first hinge (A1) and a second hinge (A2), the hinge (A1, A2) being angularly delimited by stops respectively formed on the first end of the first and second blades and on the second end of the movable blades so as to define two predefined wearing positions depending on the size of the wrist.

Abstract: A water-resistant watch case of a diving watch, includes at least one back mounted on a lower side of a middle part, and a crystal mounted on an upper side of the middle part. The crystal includes an annular peripheral surface to be fastened with an amorphous metal gasket on an inner annular surface that is complementary in shape, on the upper side of the middle part. The annular peripheral surface of the crystal is inclined towards the inside of the watch case at a determined angle less than 90° relative to a central axis perpendicular to a plane of the watch case to distribute stresses between the crystal and the middle part due to the water pressure during a dive. The annular peripheral surface and the inner annular surface are conical in shape.

Abstract: A timepiece with a double-sided display, including a first display member and a second display member coaxial to the first display member and integral therewith with a first common arbor. The centers of mass of the first display member and the second display member are, in projection on a plane perpendicular to their common axis. The first display member and/or the second display member is arranged to display a visual animation, and is movable above a back, and, either above a mask partially and incompletely covering the back.

Abstract: A component and method of making the internal parts or movement for a timepiece or piece of jewelry that includes a substrate partially coated with a black layer and decorated with at least one stone, said black layer including carbon nanotubes or aluminum oxide, said substrate being at least devoid of the black layer on the portion facing the stone.

Abstract: A timepiece mechanism (100) for disengaging a gear train. The timepiece mechanism (100) includes a gear set (110), a disengagement member (120), a holding member (121) and a control member (130). The gear set (110) includes a first wheel (111), a second wheel (112) and an intermediate wheel (113) configured to be driven by or for driving the first wheel (111) and/or for driving the second wheel (112). The holding member (121) holds the first wheel (111) and/or the second wheel (112) when the disengagement member (120), controlled by the control member (130), moves the intermediate wheel (113) between an engaged position (101) and a disengaged position (102). Hence the timepiece mechanism (100) is held in position while disengaging the watch mechanism.

Abstract: A device for attaching a bracelet or strap to a watch case, the device including, on the one hand, a bar secured to the watch case by a horn, and on the other hand, an insert integral with the end of the bracelet, wherein the bar and the insert are complementary to interlock with each other forming a removable assembly to make the bracelet interchangeable. The insert includes a movable pivot mounted in the insert and arranged to engage in a corresponding hole of the horn, the device having handling device integral with the movable pivot in order to move from a first position, in which the pivot is free to move and the strand can be assembled and/or disassembled, to a second position, in which said pivot is stationary in translation and the bracelet strand is locked on the watch case.

Abstract: The stem-crown of a water-resistant watch case includes a tubular stem inserted into a tubular opening of a middle part of the watch case, and a crown including a first portion connected in part to the stem and a second handling portion. The first portion includes an annular contact surface inclined at less than 90° with respect to a longitudinal central axis of the stem-crown starting from the first portion towards the outside of the second portion. In a rest position, the first portion is in contact against an annular receiving surface of the middle part of complementary shape to one end of the tubular opening towards the outside. The crown further includes a washer under a bearing part of the first portion and contacting the stem, being configured to bear in an annular slot of the middle part between the tubular opening and the annular receiving surface.

Abstract: A thermal protection case for timepiece, including, in a casing, a device for holding a case of a timepiece, including first elastic pistons with mobile supports each including at least one component thermally less conductive than the casing and the case and creating a thermal barrier between them, and opposite second supports each including a pillar each with at least one component thermally less conductive than the casing and the case and creating a thermal barrier between them constituting a fixed banking support, or by a second elastic piston including a second mobile support arranged to come to bear on the case and including at least one component thermally less conductive than the casing and than the case and creating a thermal barrier between the casing and the second mobile support.

Abstract: A method for fabricating a composite timepiece or jewellery component: a base is made in a substrate with an apparent surface remaining visible; each visible apparent surface is mirror polished; each polished apparent surface is coated with a first transparent or coloured semi-transparent layer of a first material in a dry process, or PVD or CVD or ALD process, or lacquering or zapon varnish process; a decorative element is affixed and bonded to an external surface of the first layer; the first layer and each decorative element is coated with a second layer of a transparent treatment material in a dry process, or PVD or CVD or ALD process, or lacquering or zapon varnish process.

Abstract: The water-resistant watch case includes at least one crystal mounted on an upper side of a middle, a fastening gasket being disposed between an upper annular inner wall of the middle and an upper annular outer wall of the crystal. The crystal includes an annular peripheral surface below the upper annular outer wall inclined at a defined angle smaller than 90° in relation to an axis perpendicular to a plane of the watch case to come into direct contact against an annular inner surface of the middle inclined at an angle similar to the inclination of the annular peripheral surface and below the upper annular inner wall of the middle. The annular peripheral surface and/or the annular inner surface of the middle comprise a domed contact portion for a contact on an annular contact line between the two surfaces.

Abstract: A method for depositing a coating on a substrate (100), including successively depositing a thin intermetallic layer (110) on the substrate (100), so as to obtain an external part (10), and annealing the external part (10) in a dedicated enclosure.

Abstract: A method for compensating the rate as a function of the temperature of a watch (1). A water-resistant case (2) contains a movement (3) with an oscillator (4), in an internal volume V occupied by n moles of a gas of constant R, where the pressure coefficient Cp and the humidity coefficient Ch of the movement (3) are determined, an optimal value Cto of the thermal coefficient Ct of the oscillator (4) is calculated defining the relatively linear variation of the rate thereof as a function of the temperature T, compensating the pressure and humidity deviations. The pressure P and/or the constant R and/or the quantity of gas and/or the temperature T are varied in the case. In the factory, the thermal coefficient of elastic return, and/or the quantity and/or the nature of the gas in the watch, and/or the internal volume of the case (2) are modified.

Abstract: A temperature control device for a timepiece, includes a first light-transmitting portion, defining with a second adjacent portion an intermediate chamber of variable dimensions according to the temperature of the first portion, the first portion includes first microlouvers according to a first spatial distribution, the second portion includes second microlouvers according to a second spatial distribution and substantially facing the first microlouvers, to superimpose partially or totally in certain relative positions between the first portion and the second portion, in order to vary the transmission and/or the reflection of the incident light on the first portion between a maximum and a minimum.

Abstract: A method for depositing a coating on a substrate (100), including a step of depositing a thin intermetallic layer (110) on the substrate (100), so as to obtain, at the end of this step, an external part (10) having a predetermined final colour.

Abstract: A balance-spring, particularly for a timepiece resonator mechanism. An adjustment device include a single elongated flexible element (5) arranged in series of strip (2), connecting one end (4, 9) of said strip (2) to a fixed support (11), to add an additional stiffness to the strip (2), and having a stiffness greater than that of the strip (2). A prestressing means (6) applies at least two different stresses on the elongated flexible element (5), the first stress being provided by a tensile/compressive force directed substantially in the longitudinal direction FL of the elongated flexible element (5), and the second stress being provided, either by a force directed substantially in a direction substantially orthogonal FT to the longitudinal direction of the elongated flexible element (5), or by a torque M, preferably a bending moment, in such a way as to vary the stiffness of the elongated flexible element (5).

Abstract: An insert for a strand of a watch wristlet to manually lock and unlock the connection between the strand and a strip of a watch case, including a body and a latch, the body having a parallelepiped portion extended by a hook-shaped portion forming a housing for the strip, and the parallelepiped portion configured to be secured to the strand. The latch is hinged to the body to cause it to pivot around a hinge axis and includes a closing wall for closing the housing. The latch has locking means formed by a pin integral with the latch cooperating with a hole in the body and first return means to constrain the pin in the hole in a locking position. The latch has a length less than the length of the cavity so that when the latch is pushed manually in the direction of the hinge axis it releases the pin.

Abstract: A method for fabricating a composite component for horology or jewellery including making a base from a first material, with a first visible apparent surface, and a first support surface; a structure from a second ceramic, or sapphire or at least partially amorphous material, with a second apparent surface and a second support surface, including a through bore machined over the entire thickness thereof; at least one insert made of a third material, for each through bore, and arranged to fit together in a complementary manner with this through bore; bonding this base and each structure to each other, with each first support surface and each second complementary support surface bearing against one another; securing each insert with its respective through bore.

Abstract: A wristlet clasp (100), of the folding buckle type, including first and second hinged blades (1, 2) between a closed wearing position and at least one open position, the first blade carrying a member for fastening a first wristlet strand, the second lower blade being connected to a loop (3) at its second end, the loop defining a passage for a second wristlet strand and carrying a stud (31) intended to be inserted into an adapted hole in the wristlet strand to define a point for anchoring the latter to the clasp. A locking member (12) holds the first and second blades in their closed position. A carriage (4) is connected to the second end of the second blade and slides in the loop switching from first and second indexed positions to define at least two predefined positions associated with a predefined useful length of the wristlet.

Abstract: A wristlet clasp (100), of the folding buckle type, including first and second blades (1, 2) hinged relative to each other, the first blade (1) further including locking means for holding the first and second blades (1, 2) in their closed position at its second end, and the second blade (2) carrying a member for fastening a first wristlet strand at its second end. The first and second blades are hinged together by movable blades (3, 4) by a first of their respective ends, the hinged blades being connected to the first and second blades via a first hinge (A1) and a second hinge (A2), the hinge (A1, A2) being angularly delimited by stops respectively formed on the first end of the first and second blades and on the second end of the movable blades so as to define two predefined wearing positions depending on the size of the wrist.