Timepiece assembly comprising a mechanical oscillator associated with a regulating device
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United States of America Patent
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Aug 20, 2019
Grant Date -
Jun 28, 2018
app pub date -
Dec 6, 2017
filing date -
Dec 23, 2016
priority date (Note) -
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Abstract
A mechanical movement timepiece assembly with a mechanical oscillator is formed by a resonator of the balance-hairspring type, and a device for regulating the oscillation frequency thereof using an auxiliary oscillator equipped with a quartz resonator. The regulating device includes a sensor, suitable for detecting the passage of the resonator via the neutral position thereof, a measuring device suitable for measuring, on the basis of position signals supplied by the sensor, a time drift of the mechanical oscillator relative to the auxiliary oscillator, and a device for applying to the resonator mechanical braking pulses when a certain time drift is observed. For this purpose, the resonator has a braking surface which extends over at least a certain sector having a certain length along the oscillation axis and against which a braking member may press in order to momentarily brake the resonator.
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