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    BALANCE SPRING AND METHOD FOR MANUFACTURING THE SAME
    1.
    发明申请
    BALANCE SPRING AND METHOD FOR MANUFACTURING THE SAME 有权

    公开(公告)号：US20250044741A1

    公开(公告)日：2025-02-06

    申请号：US18923218

    申请日：2024-10-22

    Applicant: NIVAROX-FAR S.A.

    Inventor： Marco VERARDO ,  Christian CHARBON

    IPC: G04B17/06

    Abstract: A balance spring intended to be fitted to a timepiece balance having fixed inertia, the balance spring being formed of a core having lateral faces connecting an upper face to a lower face, the balance spring including on one of the lateral faces in one portion of the outer coil, a coating formed of one or more layers, the coating including two layers with a first electrically conductive layer coated with a second outer layer made of a ceramic, or a combined layer, made of an electrically conductive ceramic. Also a method of manufacturing this balance spring.

    TIMEPIECE ASSEMBLY AND METHOD FOR MANUFACTURING THE SAME
    2.
    发明申请
    TIMEPIECE ASSEMBLY AND METHOD FOR MANUFACTURING THE SAME 有权

    公开(公告)号：US20220075322A1

    公开(公告)日：2022-03-10

    申请号：US17379127

    申请日：2021-07-19

    Applicant: Nivarox-FAR S.A.

    Inventor： Jonas VANNOD ,  Christian CHARBON

    IPC: G04B31/06

    Abstract: A timepiece assembly including a first component and a second component assembled under stress, wherein at least one part of the surface of the assembly is coated with a protective layer intended to cover defects such as cracks or incipient cracks after assembly. It also relates to the method for manufacturing this assembly.

    BALANCE SPRING FOR A HOROLOGICAL MOVEMENT
    3.
    发明申请
    BALANCE SPRING FOR A HOROLOGICAL MOVEMENT 有权

    公开(公告)号：US20210088971A1

    公开(公告)日：2021-03-25

    申请号：US16936682

    申请日：2020-07-23

    Applicant: Nivarox-FAR S.A.

    Inventor： Christian CHARBON ,  Marco VERARDO ,  Lionel MICHELET

    IPC: G04B17/06

    Abstract: A balance spring (1) intended to equip a balance of a horological movement, wherein the balance spring (1) is made of a niobium and titanium alloy containing: niobium: the remainder to 100 wt %; titanium with a weight percentage that is greater than or equal to 1 wt % and less than 40 wt %; traces of other elements chosen from among O, H, C, Fe, Ta, N, Ni, Si, Cu and Al, each of said elements being in the range 0 to 1,600 ppm of the total weight, and the sum of said trace elements being less than or equal to 0.3 wt %.

    METHOD FOR FABRICATION OF A TIMEPIECE BALANCE SPRING
    5.
    发明申请
    METHOD FOR FABRICATION OF A TIMEPIECE BALANCE SPRING 审中-公开

    公开(公告)号：US20170159145A1

    公开(公告)日：2017-06-08

    申请号：US15292403

    申请日：2016-10-13

    Applicant: Nivarox-FAR S.A.

    Inventor： Christian CHARBON ,  Guido Plankert

    IPC: C21D9/02 ,  C22C38/00 ,  C22C38/58 ,  C21D8/06 ,  C21D6/00

    CPC classification number: C21D9/02 ,  C21D6/004 ,  C21D8/065 ,  C22C38/002 ,  C22C38/04 ,  C22C38/08 ,  C22C38/38 ,  C22C38/58 ,  G04B17/066 ,  G04B17/227 ,  G04B43/007

    Abstract: 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.

    TIMEPIECE COMPONENT WITH IMPROVED TRIBOLOGY
    6.
    发明申请
    TIMEPIECE COMPONENT WITH IMPROVED TRIBOLOGY 审中-公开

    公开(公告)号：US20170146955A1

    公开(公告)日：2017-05-25

    申请号：US15337060

    申请日：2016-10-28

    Applicant: Nivarox-FAR S.A.

    Inventor： Christian CHARBON ,  Philippe DUBOIS

    IPC: G04B31/08 ,  G04B15/14

    CPC classification number: G04B31/08 ,  G04B15/14 ,  G04D3/0087

    Abstract: A timepiece component comprising a dry, self-lubricating surface layer, consisting entirely of boric acid, having a thickness of 50 nanometres to 1 micrometre. A method for coating a timepiece component with a self-lubricating surface layer, including dissolving, at ambient temperature, boric acid H3BO3 granules or powder in a solvent chosen from among water, isopropanol, propanol, methanol, methyl propanol, glycol ethylene, glycerol, acetone, in a proportion of 0.01% to 1.0% by mass; mixing and agitating the solution; dipping the component to be coated in this solution; removing the component from the solution and allowing the liquid phase to evaporate, with the surface forming the surface layer kept away from any foreign bodies, until evaporation is complete; and repeating the dipping and evaporation steps until the desired layer thickness is obtained, from 10 nanometres to 1 micrometer, or more particularly from 50 nanometres to 1 micrometre.

    SPIRAL SPRING FOR CLOCK OR WATCH MOVEMENT AND METHOD OF MANUFACTURE THEREOF
    10.
    发明申请
    SPIRAL SPRING FOR CLOCK OR WATCH MOVEMENT AND METHOD OF MANUFACTURE THEREOF 有权

    公开(公告)号：US20230088320A1

    公开(公告)日：2023-03-23

    申请号：US18060228

    申请日：2022-11-30

    Applicant: Nivarox-FAR S.A.

    Inventor： Christian CHARBON

    IPC: G04B17/06 ,  C22F1/18 ,  C22C27/02 ,  C22F1/00

    Abstract: The present invention relates to a spiral spring for a balance wheel made of an alloy of niobium and titanium with an essentially single-phase structure, and the method of manufacture thereof which comprises: a step of producing a blank in a niobium-based alloy consisting of: niobium: balance to 100 wt %, titanium: between 40 and 49 wt %, traces of elements selected from the group consisting of O, H, C, Fe, Ta, N, Ni, Si, Cu, Al, between 0 and 1600 ppm by weight individually, and cumulatively less than 0.3 wt %, a step of type β hardening of said blank at a given diameter, in such a way that the titanium of the niobium-based alloy is essentially in the form of a solid solution with niobium in β phase, the content of titanium in α phase being less than or equal to 10 vol %, at least one deformation step of said alloy alternating with at least one step of heat treatment, the number of steps of heat treatment and of deformation being limited so that the niobium-based alloy obtained retains a structure in which the titanium of the niobium-based alloy is essentially in the form of a solid solution with niobium in β phase, the content of titanium in α phase being less than or equal to 10 vol % and it has an elastic limit greater than or equal to 600 MPa and an elastic modulus less than or equal to 100 GPa, a step of winding to form the spiral spring being carried out before the last heat treatment step.

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