Elementary timepiece mechanism comprising a first housing about an axis, a second housing, and a mobile element comprising a first shoulder pivoting in the first housing and a second shoulder pivoting in the second housing, the second housing comprising at least a first abutment surface arranged to ensure the alignment of the mobile element on said axis when the mobile element is in abutment on the first abutment surface, and the elementary mechanism includes at least one elastic return means arranged to return the mobile element to this first abutment surface.

Micromechanical component intended for clock mechanisms. At least one portion of the component includes a crystalline mineral material with a carbon or alumina basis and at least one contact surface is intended to be brought into sliding and/or pivoting contact. The contact surface locally has at least one microstructured area with a three-dimensional texture. The three-dimensional texture is formed of microcavities, making the microstructured area more oleophobic than the non-microstructured contact surface, and/or formed of micro pillars making the microstructured area more oleophilic than the non-microstructured contact surface. The microstructured area is configured to locally confine a lubricant substance to a lubricated portion of the contact surface.

Micromechanical component intended for clock mechanisms. At least one portion of the component includes a crystalline mineral material with a carbon or alumina basis and at least one contact surface is intended to be brought into sliding and/or pivoting contact. The contact surface locally has at least one microstructured area with a three-dimensional texture. The three-dimensional texture is formed of microcavities, making the microstructured area more oleophobic than the non-microstructured contact surface, and/or formed of micro pillars making the microstructured area more oleophilic than the non-microstructured contact surface. The microstructured area is configured to locally confine a lubricant substance to a lubricated portion of the contact surface.

A method for manufacturing a pivot bearing (1) for the pivoting of a timepiece component (2), in particular a pivot stone, includes:boring (E1) a hole (10a) in a bearing blank (1a) along an axis (A1) intended for the pivoting of a timepiece component (2), this hole (10a) forming a start point (13a) of a first pivot zone (13) of the bearing (1), thenlaser engraving (E2), in the blank (1a), in particular using a femtosecond laser, a second clearance zone (14) of the bearing (1), juxtaposed with the start point (13a) of a first pivot zone (13), this second clearance zone (14) of the bearing (1) opening at a first face (11a) of the bearing (1) blank (1a), thenremoving material by wear (E3), in particular by olive-cutting, at the start point (13a) of the first pivot zone (13) of the bearing (1) and a boundary zone (14a) between the start point (13a) and the second clearance zone (14) of the bearing (1) in order to form a first pivot zone (13) and a second clearance zone (14) that are juxtaposed, connected to each other by a rounded connection.

A method for manufacturing a pivot bearing (1) for the pivoting of a timepiece component (2), in particular a pivot stone, includes:boring (E1) a hole (10a) in a bearing blank (1a) along an axis (A1) intended for the pivoting of a timepiece component (2), this hole (10a) forming a start point (13a) of a first pivot zone (13) of the bearing (1), thenlaser engraving (E2), in the blank (1a), in particular using a femtosecond laser, a second clearance zone (14) of the bearing (1), juxtaposed with the start point (13a) of a first pivot zone (13), this second clearance zone (14) of the bearing (1) opening at a first face (11a) of the bearing (1) blank (1a), thenremoving material by wear (E3), in particular by olive-cutting, at the start point (13a) of the first pivot zone (13) of the bearing (1) and a boundary zone (14a) between the start point (13a) and the second clearance zone (14) of the bearing (1) in order to form a first pivot zone (13) and a second clearance zone (14) that are juxtaposed, connected to each other by a rounded connection.

The method is for producing a timepiece assembly (3) having a first timepiece component (1) with a connecting portion comprising at least one opening (10) and at least one second timepiece component (2) distinct from the first timepiece component (1) having at least one conformation (20), the connecting portion of the first timepiece component (1) and/or the conformation of the second timepiece component (2) forming a part based on a sintered zirconia. The method includes a heat treatment of joining together which is predefined to induce a phase change from the tetragonal phase to the monoclinic phase, or vice versa, of the part based on a sintered zirconia, this phase change inducing a change in the dimensions of at least the part based on a sintered zirconia so as to join together the connecting portion of the first timepiece component (1) and the conformation of the second timepiece component (2).

A method is for manufacturing a stone, in particular for a timepiece, from a mineral body of monocrystalline or polycrystalline type. The method includes an ablation step in which the body is subjected to a material ablation by scanning on at least one face of the body using ultra-short pulse laser radiation whose duration is less than one hundred picoseconds, and whose beam is guided by a precession system having at least three axes to at least partially cancel the angle of the laser cone, which is due to the focusing of the laser. A mineral stone of monocrystalline or polycrystalline type, in particular for a horological movement, is likely to be obtained by the method. The stone includes in particular a face provided with a peripheral rim, in particular for laterally clamping an endstone in a bearing.

A method is for manufacturing a stone, in particular for a timepiece, from a mineral body of monocrystalline or polycrystalline type. The method includes an ablation step in which the body is subjected to a material ablation by scanning on at least one face of the body using ultra-short pulse laser radiation whose duration is less than one hundred picoseconds, and whose beam is guided by a precession system having at least three axes to at least partially cancel the angle of the laser cone, which is due to the focusing of the laser. A mineral stone of monocrystalline or polycrystalline type, in particular for a horological movement, is likely to be obtained by the method. The stone includes in particular a face provided with a peripheral rim, in particular for laterally clamping an endstone in a bearing.

A mechanical watch or measurement instrument including metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01.

A mechanical watch or measurement instrument having metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01.