ANTISHOCK DEVICE AND TIMEPIECE MECHANICAL OSCILLATOR WITH FLEXIBLE GUIDANCE HAVING SUCH AN ANTISHOCK DEVICE
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United States of America Patent
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Issued Date -
Oct 8, 2020
app pub date -
Apr 3, 2020
filing date -
Apr 4, 2019
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Abstract
An antishock device intended to protect from shocks a timepiece mechanical oscillator with flexure guiding, the antishock device including a visco-elastic element and a rigid stop, each being configured in such a manner as to cooperate with a portion of the oscillator. The visco-elastic element is configured to be deformed elastically if the oscillator is subjected, in the event of a shock, to an acceleration between 20 G and 1000 G NIHS, preferably between 50 G and 500 G NIHS. The portion cooperating with the rigid stop if the portion is subjected to an acceleration beyond at least 1000 G NIHS, preferably at least 500 G. A timepiece mechanical oscillator includes a balance, a suspension with flexure guiding and elastically restoring the balance into a plane of oscillation and provided with shock protection, the oscillator including at least one antishock device according to the invention.
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