PIEZOELECTRIC BALANCE SPRING, AND METHOD FOR MANUFACTURING THE BALANCE SPRING

    公开(公告)号:US20230185242A1

    公开(公告)日:2023-06-15

    申请号:US17939511

    申请日:2022-09-07

    CPC classification number: G04B17/063 G04B17/066 G04B17/227

    Abstract: The piezoelectric balance spring (3) is provided for a circuit (10) for self-regulating an oscillation frequency of an oscillating mechanical system (2, 3), or an energy recovery circuit or a motor circuit for actuating the movement or for the automatic maintenance thereof. The piezoelectric balance spring (3) comprises at least one piezoelectric layer (7, 7′, 17, 17′, 27, 27′) disposed on a top face (20) or bottom face of a certain number of coils of the spring in a plane, and at least two pairs of electrodes (8a, 8b, 8c, 8d), whereby the electrodes of each pair are disposed on two opposing faces of the same piezoelectric layer or respectively two piezoelectric layers so as to apply a reverse bias voltage on each pair of electrodes.

    Stone setting method
    3.
    发明授权

    公开(公告)号:US11547187B2

    公开(公告)日:2023-01-10

    申请号:US16837090

    申请日:2020-04-01

    Inventor: Elias Laforge

    Abstract: A method for assembling a stone on a setting support, the stone being cut to exhibit a table, a crown, a girdle and a pavilion, including the steps of: providing a substrate coated with a pattern including an electrically conductive layer covered with a resin layer, the pattern having an inner contour delimiting a hole through the coated substrate and an outer contour corresponding to the outer contour of the desired setting support; removing the resin layer; after dissolution of the resin layer, positioning the stone in the through hole, the stone resting on the electrically conductive layer; and electrodepositing a metal layer on the electrically conductive layer to form the setting support, in order to make the stone integral with the metal layer.

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