Mechanical timepiece movement provided with a feedback system for the movement
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United States of America Patent
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May 15, 2018
Issued Date -
Feb 16, 2017
app pub date -
Jun 29, 2016
filing date -
Aug 11, 2015
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Abstract
The mechanical timepiece movement includes at least one barrel, a set of gear wheels driven at one end by the barrel, and an escapement mechanism of a local oscillator with a resonator in the form of a sprung balance and a feedback system for the timepiece movement. The escapement mechanism is driven at another end of the set of gear wheels. The feedback system includes at least one precise reference oscillator combined with a frequency comparator to compare the frequency of the two oscillators and a mechanism for regulating the local oscillator resonator to slow down or accelerate the resonator based on the result of a comparison in the frequency comparator.
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