Timepiece barrel
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United States of America Patent
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Oct 18, 2016
Grant Date -
Aug 6, 2015
app pub date -
Oct 21, 2013
filing date -
Dec 18, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A timepiece barrel for pivotal assembly between a plate and a bar and including at least one spring housed between a pivoting drum and a cover and hooked between, at the outer end thereof, the drum and at the inner end thereof, an arbor which pivots integrally with a ratchet about a pivot axis. The barrel includes a one-piece sub-assembly coaxial to the arbor and including the arbor and a boss including a collar for limiting axial shake of the drum, the collar carrying pivotal drive mechanisms for driving pivoting of the ratchet which is axially free in a direction of the pivot axis.
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