A method for fabrication of a micromechanical part made of a one-piece synthetic carbon allotrope based material, the method including: forming a substrate with a negative cavity of the micromechanical part to be fabricated; coating the negative cavity of the substrate with a layer of the synthetic carbon allotrope based material in a smaller thickness than the depth of the negative cavity; and removing the substrate to release the one-piece micromechanical part formed in the negative cavity.

A process for manufacturing a timepiece or jewellery component, the component being manufactured from a first material, the process including: obtaining the component, having undergone, at a very latest during the obtaining, a treatment directed toward combining the component with a chromic element, the chromic element including at least one pigment capable of reacting to an energy supply and a matrix for binding the pigment; placing the component in a machine capable of at least locally supplying energy to the component; using the energy supply machine in a predefined operating program at least locally to provide energy to the chromic element to bring about a reaction of its pigment; removing the component from the energy supply machine.

A method for fabrication of a micromechanical part made of a one-piece synthetic carbon allotrope based material, the method including: forming a substrate with a negative cavity of the micromechanical part to be fabricated; coating the negative cavity of the substrate with a layer of the synthetic carbon allotrope based material in a smaller thickness than the depth of the negative cavity; and removing the substrate to release the one-piece micromechanical part formed in the negative cavity.

The invention relates to a method for manufacturing an epilame mechanical part (2) comprising a substrate (4) made of a first material, the method comprising at least: a step (10) of depositing an epilame product (6) consisting of a second material on the substrate (4), said deposition being carried out in the form of a projection onto the substrate (4) of at least one collimated or localised beam (12; 12A, 12B) of material containing the epilame product (6); and a step (11) of treating the second material to ensure the cohesion of the components on the substrate (4).

A motor module for a horological movement, the motor module including a plate bearing one or more cogs, and a cog bridge mounted on the plate, wherein the cog bridge includes a device for clipping the cog bridge onto the plate.

The invention concerns a zirconium and/or hafnium based, beryllium free, solid, amorphous alloy, with the addition of silver and/or gold and/or platinum to increase its critical diameter.

The present invention relates to a timepiece component (100) made up of a polymer-based matrix (110) and a reinforcement (120) that consists of at least two different kinds of cut fibres (121, 122), one of which is a polyazole.

The invention concerns a zirconium and/or hafnium based, beryllium free, bulk, amorphous alloy, with the addition of silver and/or gold and/or platinum to increase its critical diameter.

An assembly of timepiece parts assembled together with an adhesive at a temperature T.sub.A and to be repositioned when the adhesive is at a temperature T.sub.C. The adhesive includes a formulation, which at T.sub.C includes a mixture of polymer chains with pendant diene units X and coupling molecules including two dienophile end groups Y, wherein the X units and the Y groups are arranged to react with one another and to bond together with the Diels-Alder reaction at a temperature T.sub.DA and to regenerate with the retro-Diels-Alder reaction at a temperature T.sub.RDA, at T.sub.A forms a three-dimensional network, in which the polymer chains are linked to one another by the coupling molecules with the Diels-Alder reaction, where T.sub.A<T.sub.RDAT.sub.C, where temperature T.sub.DA ranges between 0 C. and 100 C. and temperature T.sub.RDA ranges between 50 C. and 200 C., and T.sub.DA is strictly lower than T.sub.RDA. A process for assembling and repositioning two timepiece parts with a repositionable hot melt adhesive to enable the timepiece parts to be repositioned when the adhesive is heated.

A timepiece component includes a core made of material suitable for electroforming, containing nickel-phosphorus or made of nickel-phosphorus, which core is, at least locally, coated with a surface layer of gold or gold alloy, to improve its tribological behaviour in areas including the surface layer of gold or gold alloy. The component is made by a fabrication method that includes the steps consisting in preparing a composition suitable for creating a solid core by a LIGA or electroforming method; shaping the solid core by a LIGA or electroforming method; coating the solid core, at least locally in areas subject to friction, with a gold or gold alloy surface layer.