A monolithic horological component comprising a binary amagnetic CuNi alloy, said component being obtained by a process comprising the production of a mold for said component by photolithography and a step for electrodeposition. The fabrication process for the monolithic horological component is selected from UV-LiGA type processes.

The invention relates to a compacted and densified metal material comprising one or more phases formed of an agglomerate of grains, the cohesion of the material being provided by bridges formed between grains, said material having a relative density higher than or equal to 95% and preferably higher than or equal to 98%.

A spiral timepiece spring with a two-phase structure, made of a niobium and titanium alloy, and method for manufacturing this spring, including producing a binary alloy containing niobium and titanium, with niobium: the remainder to 100%; titanium between 45.0% and 48.0% by mass of the total, traces of components among O, H, C, Fe, Ta, N, Ni, Si, Cu, Al, of between 0 and 1600 ppm by mass of the total individually, and less than 0.3% by mass combined; applying deformations alternated with heat treatments until a two-phase microstructure is obtained including a solid solution of niobium with -phase titanium and a solid solution of niobium with -phase titanium, the -phase titanium content being greater than 10% by volume, with an elastic limit higher than 1000 MPa, and a modulus of elasticity higher than 60 GPa and less than 80 GPa; wire drawing to obtain wire able to be calendered; calendering or winding.

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.

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 crown assembly for an electronic device. The crown assembly includes a crown, coupled to a rotatable stem assembly, and a sleeve assembly coupled to the crown and the rotatable stem assembly, wherein the sleeve assembly causes the rotatable stem assembly to be axial displaceable in a first axial direction from the run stem position to a setting stem position and causes electrical contact between two contacts upon a pushing of the crown in a second axial direction to a pushed crown position, while the rotatable stem assembly is not axial displaceable in the second axial direction passed its normal run stem position.

A mechanical oscillator endowed with a strip, with the aforesaid strip incorporating a first silicon layer having a crystal lattice extending along a first direction of one plane, a thermal compensation layer composed of a material having a Young's modulus thermal coefficient of opposite sign to that of the silicon, and a second silicon layer having a crystal lattice extending in a second direction of the plane, with the first and direction being offset at an angle of 45 within the plane of the layers, and with the thermal compensation layer extending between the first and second silicon layers.

A balance with hairspring of the present disclosure includes a balance shaft rotatably supported by a support member, a collet fixed to the balance shaft, and a metal hairspring fixed to the collet, and the hairspring includes an inner end portion fixed to the collet, a first winding portion continuously formed from the inner end portion and formed along a Grossmann curve, and a second winding portion continuously formed from the first winding portion and formed along an Archimedes' spiral, and the collet includes a fixing portion to which the inner end portion of the hairspring is fixed, and an outer peripheral shape portion arranged at a position facing an inner surface of the first winding portion and configured to form the first winding portion into a shape of the Grossmann curve.

A balance-spring intended to equip a balance of an horological movement, comprising a core made of NbTi made from an alloy consisting of: niobium: balance to 100% by weight, titanium: between 5 and 95% by weight, traces of elements chosen from the group consisting of O, H, C, Fe, Ta, N, Ni, Si, Cu, Al, each of said elements being present in a quantity between 0 and 1600 ppm by weight, the total quantity formed by all of said elements being between 0% and 0.3% by weight, wherein the core made of NbTi is coated with a layer of niobium, said layer of niobium having a thickness between 20 nm and 10 ?m.

A one-piece balance spring includes a single strip wound on itself between an inner coil and an outer coil. The strip has a geometry such that when the angle of contraction of the balance spring has a value of 360 degrees, there is a constant distance between each coil from the second coil to the penultimate coil.