A mechanical connection device, in particular a mechanical connection device for a timepiece or a mechanical transmission device for a timepiece, includes a first part having a first area with at least a first micro-cavity; and a second part having a second area with at least a second micro-cavity, the first and second areas being in contact with one another in a mechanical connection configuration.

A timepiece oscillator structure includes at least one divisible unit, which includes at least one component which includes at least one flexible blade or at least one blade with necks, joining two main units, each more rigid than the flexible blade or blade with necks, where the divisible unit includes at least one protection unit adjacent to at least one main unit to which it is connected by at least one divisible linkage which is designed in order to make possible the detachment of this protection unit from the component when the component is fixed, with at least the particular main unit which is adjacent to the protection unit, to a more rigid external element than the flexible blade or than the necks of the blade with necks.

A manufacturing method includes a first repeating step of irradiating a base material with a pulse laser, having a spot diameter S, while relatively moving a laser head and the base material in a first direction, moving the laser head by a predetermined pitch width Pin a second direction that intersects the first direction, and repeating irradiation by the pulse laser along the first direction and movement of the laser head in the second direction, and a second repeating step of irradiating the base material with the pulse laser while relatively moving the laser head and the base material in the second direction, moving the laser head by the pitch width in the first direction, and repeating irradiation by the pulse laser along the second direction and movement of the laser head in the first direction, wherein S<P<100 μm.

A component for the internal parts or the movement for a timepiece or a piece of jewellery including a substrate partially coated with a black layer and decorated with at least one stone, the black layer including carbon nanotubes or aluminium oxide, the substrate being at least devoid of the black layer on the portion facing the stone. It also relates to the method for manufacturing this component for the timepiece or the piece of jewellery.

A method of manufacturing an external part of a timepiece, including: providing a metallic base made of a first material including titanium and/or a first titanium alloy; providing at least one metallic cover plate made of a second material, the second material including a second metal chosen from among gold or platinum, and/or a second alloy including at least gold or platinum, the at least one cover plate being of a thickness greater than or equal to 0.5 millimeters; brazing the cover plate onto the base with a braze material chosen for brazing titanium with gold or respectively platinum to form a bimetallic blank; and shaping the bimetallic blank to give the external part its final form.

A display system for a timepiece is disclosed. The system includes a mobile arranged to be driven by a drive source by first teeth provided on the mobile. The mobile includes second teeth including a teeth module of less than 0.05 mm, the second teeth being arranged so as to drive a display member either directly or indirectly.

The invention relates to a method for decorating a timepiece component comprising: a) a step of preparation of the timepiece component optionally comprising a first step of depositing a first material on the timepiece component to form a first sub-layer, b) a second step of depositing a second material on the timepiece component obtained in step a) to form a second sub-layer, c) a colouring step comprising the deposition of a third coloured material on the timepiece component obtained in step b) to form a coloured external decorative layer,

According to the invention, at least step b) and step c) are achieved by a physical vapour deposition method.

Economical method for manufacturing a timepiece display or hand-fitting component: a casing material is chosen for each visible surface: amorphous metal or nanocrystalline alloy or alloy of gold and/or silver and/or copper and/or rhodium and/or titanium and/or aluminium; a thick, hollow blank of a thickness greater than 20 micrometres is created in a first tool, from the casing material with an initial thickness greater than or equal to 50 micrometres, with an overthickness with respect to each visible surface, with a first cavity for reception of a support structure; an interior material is chosen to make a support structure; the support structure is made and joined to the first cavity; one visible surface remaining visible, is diamond tool machined, removing all or part of the overthickness from the blank.

Economical method for manufacturing a timepiece display or hand-fitting component: a casing material is chosen for each visible surface: amorphous metal or nanocrystalline alloy or alloy of gold and/or silver and/or copper and/or rhodium and/or titanium and/or aluminium; a thick, hollow blank of a thickness greater than 20 micrometres is created in a first tool, from the casing material with an initial thickness greater than or equal to 50 micrometres, with an overthickness with respect to each visible surface, with a first cavity for reception of a support structure; an interior material is chosen to make a support structure; the support structure is made and joined to the first cavity; one visible surface remaining visible, is diamond tool machined, removing all or part of the overthickness from the blank.

A method for manufacturing a stone for a timepiece from a mineral body of a monocrystalline type, the stone including a hole, includes ablating the body by scanning at least one face of the body with ultra-short pulse laser radiation from a laser for a duration less than one hundred picoseconds, and guiding a beam of the laser radiation using a precession system of at least three axes configured to at least partially cancel a conical focusing angle of the laser. The ablating includes digging of a cone of entrance to the hole. A mineral stone of monocrystalline type for a timepiece includes a face provided with a hole formed in a body of the stone, and a functional element at an entrance to the hole. The functional element has a shape of a cone.