The invention relates to a pivot arbor (1) for a timepiece movement comprising at least one pivot (3) made of a first non-magnetic metal material (4) at one of the ends thereof in order to limit the sensitivity thereof to magnetic fields. At least the outer surface of said pivot (3) is coated with a layer (5) of a second material selected from the group comprising Ni and NiP, and preferably chemical NiP. The invention concerns the field of timepiece movements.

An escape wheel serving as a watch component that constitutes a drive mechanism of a watch includes a tooth portion, and a base mainly composed of silicon. A contact surface where the tooth portion makes contact with another component includes a recess.

A system including two components intended to be in friction contact with each other in a given direction, wherein the friction occurs in a functional area, wherein the system is at least one of the two components including, on a surface in the functional area, a texture formed of a series of troughs of rounded shape separated by peaks or a series of bumps of rounded shape separated by troughs, the troughs extending parallel in the given direction and allowing for the evacuation of debris produced by friction and serving as a reservoir for a lubricant. A method for manufacturing at least one component or a mold by the DRIE (deep reactive ion etching) process, wherein surface defects on the sidewalls machined by the DRIE process are used to form the troughs.

A horological regulator mechanism including a resonator mechanism having a virtual pivot and flexure bearing, with a quality factor greater than 1,000, the inertial element whereof indirectly cooperates with a free escapement mechanism, during the operating cycle whereof the resonator mechanism has at least one phase of freedom wherein it is not in contact with the escapement mechanism, this regulator mechanism comprises a pair of components including rubbing surfaces arranged to cooperate and be in contact with one another, whereby the first rubbing surface is formed by the surface of an element comprising silicon carbide.

An escape wheel (an example of a timepiece component) has a silicon-made substrate having an insertion portion into which an axle is inserted, and a coating film formed in a contact portion which comes into contact with at least the axle, at a surface of the substrate. The coating film contains metal alkoxide having a fluorine atom.

An escape wheel serving as a watch component that constitutes a drive mechanism of a watch includes a tooth portion, and a base mainly composed of silicon. A contact surface where the tooth portion makes contact with another component includes a recess.

A timepiece mechanism includes a structure in which at least one arbor of a wheel set is pivoted about an axis of rotation and a braking device for the mechanical braking at constant torque of this arbor. The braking device includes a braking component which is removable with respect to the structure and includes, for attachment thereof to the structure, a solid felloe, which carries a plurality of resilient elements, regularly distributed around a common axis about which these resilient elements each have a contact area. The contact areas together defining an opening, arranged to engage, in a press fit with elastic gripping, with the arbor, to make the common axis coincide with the axis of rotation of the arbor, and to apply to the arbor a substantially constant tangential braking force.

For example, an escape gear wheel part as a watch component includes a base member including a first surface and a second surface opposite the first surface, the base member being mainly composed of silicon, and a light reflecting layer provided at the first surface of the base member, the light reflecting layer having a three-layer structure in which a first silicon oxide layer, a silicon layer, and a second silicon oxide layer are layered in this order.

The invention relates to a timepiece component (1) comprising at least one portion (3) machined by chip removal. Said portion (3) is made of a non-magnetic copper alloy in order to limit its sensitivity to magnetic fields, said copper alloy containing between 10 wt % and 20 wt % of Ni, between 6 wt % and 12 wt % of Sn, X wt % of additional elements, wherein X is comprised between 0 and 5, and the remainder is Cu. The invention concerns the field of timepiece movements.

Provided are a mechanical part, a timepiece having the mechanical part, and a method of manufacturing a mechanical part that suppresses separation and rotation of a rotating member to a staff member, and can be manufactured at a competitive cost. A escape wheel and pinion 35 as an example of a mechanical part has a staff member 102; an escape wheel 101 with a hole 115 to which the staff member 102 is inserted, and ribs 112 that extend toward the staff member 102; and an annular fastening member 130 that affixes the escape wheel 101 to the staff member 102. The fastening member 130 is disposed touching the ribs 112 and deforming to protrude into the hole 115.