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    Rotary wheel set system of a horological movement
    1.
    发明授权
    Rotary wheel set system of a horological movement 有权

    公开(公告)号：US11886151B2

    公开(公告)日：2024-01-30

    申请号：US17341536

    申请日：2021-06-08

    申请人： ETA SA Manufacture Horlogère Suisse

    发明人： Jean-Luc Helfer ,  Dominique Lechot

    IPC分类号： G04B31/008 ,  G04B31/02 ,  G04B31/04 ,  G04B31/06

    CPC分类号： G04B31/0087 ,  G04B31/008 ,  G04B31/0082 ,  G04B31/02 ,  G04B31/04 ,  G04B31/06

    摘要： A rotary wheel set system of a horological movement with a rotary wheel set, a first and a second bearing, for a first and a second pivot of the arbor of the rotary wheel set, the wheel set including a mass center in a position of its arbor, the first bearing including an endstone including a main body equipped with a pyramidal cavity configured to receive the first pivot of the arbor of the rotary wheel set, the cavity having at least three faces giving its pyramidal shape, the first pivot being capable of cooperating with the cavity of the endstone to rotate in the cavity, at least one contact zone between the first pivot and a face being generated, the normal at the contact zone or zones forming a contact angle (αh) relating to the plane perpendicular to the arbor of the pivot, wherein the contact angle (αh) is less than 45°.

    Reduced-friction shaft support bearing
    2.
    发明授权
    Reduced-friction shaft support bearing 有权

    公开(公告)号：US11036186B2

    公开(公告)日：2021-06-15

    申请号：US16344237

    申请日：2017-11-15

    申请人： Comadur SA

    发明人： Laurent Kaelin ,  Pascal Chopard-Lallier ,  Bruno Besutti

    IPC分类号： F16C17/08 ,  G04B31/008 ,  G04B31/08 ,  G04B31/012

    摘要： A bearing includes a shaft which pivots in the bearing. The shaft includes, at at least one end thereof, a shoulder via which the shaft is in contact with an opposite surface of the bearing. The shoulder is extended by a pivot engaged in a hole provided in the bearing. The opposite surface of contact of the bearing includes at least one hollow in order to reduce the surface of contact between the shoulder of the shaft and the bearing. Application is made to the production of a bearing for a shaft of a horology movement.

    REDUCED-FRICTION SHAFT SUPPORT BEARING
    3.
    发明申请
    REDUCED-FRICTION SHAFT SUPPORT BEARING 审中-公开

    公开(公告)号：US20190258207A1

    公开(公告)日：2019-08-22

    申请号：US16344237

    申请日：2017-11-15

    申请人： Comadur SA

    发明人： Laurent KAELIN ,  Pascal CHOPARD-LALLIER ,  Bruno BESUTTI

    IPC分类号： G04B31/008 ,  G04B31/012 ,  G04B31/08

    摘要： A bearing includes a shaft which pivots in the bearing. The shaft includes, at at least one end thereof, a shoulder via which the shaft is in contact with an opposite surface of the bearing. The shoulder is extended by a pivot engaged in a hole provided in the bearing. The opposite surface of contact of the bearing includes at least one hollow in order to reduce the surface of contact between the shoulder of the shaft and the bearing. Application is made to the production of a bearing for a shaft of a horology movement.

    Device and method for testing a mechanical property of a timepiece shaft
    9.
    发明授权
    Device and method for testing a mechanical property of a timepiece shaft 有权

    公开(公告)号：US12066794B2

    公开(公告)日：2024-08-20

    申请号：US17547487

    申请日：2021-12-10

    申请人： ROLEX SA

    发明人： Samuel Debaud ,  Daniel Sallin ,  Alain Semoroz

    IPC分类号： G04D7/00 ,  G01B5/24 ,  G04B31/008 ,  G04B31/06

    CPC分类号： G04D7/001 ,  G01B5/24 ,  G04B31/008 ,  G04B31/06

    摘要： The device (3) for testing a timepiece shaft (1) having at least one first pivot (10, 10′) and an axis of rotation (A1), the device including a rest (2) having two supports (12, 12′) intended to accommodate the timepiece shaft (1), at least one of the two supports (12) being intended to accommodate the at least one first pivot (10), an element (4; 4′) for applying a mechanical force to the timepiece shaft, positioned such that this force is at least partially taken up by the support (12) at the at least one first pivot (10). The element (4; 4′) for applying a mechanical force is arranged such that the timepiece shaft (1) is driven in rotation by a relative movement of the element (4; 4′) for applying a mechanical force and the rest (2).