Shock absorber bearing for staff of mobile part e.g. balance of mechanical watch, has pivot system absorbing shocks subjected by mobile part and formed of single piece that is surface covered with/completely made of polycrystalline material

摘要

The bearing (100) has a support (103) provided with housing to receive a suspended pivot system in which a shank of a staff (120) is inserted. The pivot system absorbs shocks subjected by a mobile part such as wheel (105), of a timepiece, where the pivot system comprises pivoting units (126, 126'). The pivot system is formed of a single piece that is surface covered with or completely made of polycrystalline material such as ceramic, where the material comprises precious metal element.