Chronograph mechanism
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United States of America Patent
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Jul 7, 2015
Grant Date -
Oct 11, 2012
app pub date -
Apr 6, 2012
filing date -
Apr 8, 2011
priority date (Note) -
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Abstract
The chronograph mechanism includes a control device and a chronograph gear train designed to be driven directly or indirectly by a barrel, this chronograph gear train including a second-counter mobile and a mobile with a first precision corresponding to a first fraction of a second. The chronograph mechanism also includes at least one indicator which displays the seconds and first fractions of a second of the duration measured. The chronograph gear train includes an additional mobile (5) with a second precision corresponding to a second fraction of a second, which is driven by the mobile (3) for the first fraction of a second by a mobile (4) compensating the backlash; and the chronograph mechanism also includes an indicator for the second fractions of a second, which are smaller than the first fractions of a second, of the duration measured, which indicator is actuated by the additional train.
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