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公开(公告)号：US10459405B2
公开(公告)日：2019-10-29
申请号：US15309342
申请日：2015-05-01
发明人： Ilan Vardi
摘要： The present invention relates to a wristwatch comprising a mechanical clock movement with a tuning fork resonator. The oscillator preferably comprises a material A with a low internal friction. In the oscillator of the invention, the unwanted symmetrical oscillations are avoided, for example, by the choice of the materials from which the tuning fork is manufactured. According to preferred embodiments, the rod and/or fastening of the oscillator comprises a material having greater internal friction than that of said material A, such that the quality factor Q2 of the symmetrical oscillations is reduced, in contrast to the quality factor Q1 of the anti symmetrical oscillation mode.
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