A pivot arbor for a timepiece movement including at least one pivot made of a non-magnetic metal material at at least one of its ends in order to limit its sensitivity to magnetic fields. The non-magnetic metal material is a non-magnetic light metal or a non-magnetic alloy of the light metal, and at least the external surface of the pivot is coated with an anodic oxide layer of the material, obtained by anodic growth.

A method for manufacturing a horological mobile (10) including: depositing a first thin layer (11) with a first material including at least nickel, the periphery of which defines the contour of the geometry of the horological mobile (10); depositing an intermediate layer (12), with a second material including at least nickel and phosphorus, so as to cover a face of the first thin layer (11), the periphery of which corresponds to that of the geometric shape of the first thin layer (11); depositing a second thin layer (13) with the first material, so as to cover a face of the intermediate layer (12), the periphery of which corresponds to that of the geometric shape of the first thin layer (11), wherein the first and the second thin layer (11, 13) are poorer in phosphorus than the intermediate layer (12), or do not contain any phosphorus.

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 at least one of the ends thereof in order to limit the sensitivity thereof to magnetic fields, at least the outer surface of said pivot (3) being coated with a first layer (5) of a second material selected from the group comprising Ni, NiB and NiP, and preferably chemical NiP. At least the first layer (5) of second material is at least partially coated with a second layer (6) of a third material selected from the group comprising gold, silver, copper, platinum, rhodium, palladium and their alloys.

The invention concerns the field of timepiece movements.

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.

The invention relates to a pivot arbor comprising a metal pivot (3) at each of its ends. The metal is a non-magnetic copper alloy in order to limit its sensitivity to magnetic fields, and at least the outer surface (5) of one of the two pivots (3) is deep-hardened to a predetermined depth with respect to the rest of the arbor to harden the pivot or pivots (3).

The invention concerns the field of timepiece movements.

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.

The invention relates to a pivot arbor comprising a metal pivot (3) at each of its ends. The metal is a non-magnetic aluminium alloy in order to limit its sensitivity to magnetic fields, and at least the outer surface (5) of one of the two pivots (3) is deep-hardened to a predetermined depth with respect to the rest of the arbor to harden the pivot or pivots (3).

Provided is an electronic timepiece including: an antenna configured to receive a standard radio wave, a pointer, a motor configured to drive the pointer, a circuit board having a front surface mounted with a semiconductor device including an active region, and a magnetic shield plate disposed at a back surface side of the circuit board, the magnetic shield plate having a shape that overlaps at least a portion of the motor and does not overlap the active region of the semiconductor device in plan view as viewed in a direction orthogonal to the front surface of the circuit board.

Method for fabrication of an antiferromagnetic and temperature compensated timepiece balance spring, including the steps of: selecting an amagnetic iron-chromium-nickel-manganese-beryllium compensating alloy, comprising, by mass percent, between and including: from 21.0% to 25.0% of manganese, from 9.0% to 13.0% of nickel, from 6.0% to 15.0% of chromium, from 0.2% to 2.0% of beryllium, the remainder iron, the total of nickel and manganese being higher than or equal to 33.0%, working the alloy to obtain a blank, shaping the blank by casting and/or forging and/or wire drawing and/or rolling and/or drawing, to obtain a blank of spring wire; winding the wire on a winder to obtain a balance spring, subjecting the spiral spring to at least a heat setting treatment, by annealing at a temperature comprised between 540 C. and 650 C., for a duration of 30 to 200 minutes, to obtain a balance spring.

An antimagnetic and antishock protective ring for a horology movement, intended to be fixed to a horology movement, the ring including a tubular body extending between a first and a second axial end and is made of a material having ferromagnetic properties and wherein it is adapted to form, with the first axial end, a stop limiting the angular displacement about a radial axis of an oscillating mass connected to the horology movement.