Timepiece barrel
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United States of America Patent
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Mar 22, 2016
Grant Date -
Oct 29, 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 ratchet for winding a barrel, including an axial passage for fitting the ratchet onto an arbor carrying pivotal drive mechanism. The ratchet includes, in the axial passage, a strip spring permitting fitting of the ratchet onto the arbor, and exerting a bearing force on the pivotal drive mechanism, wherein the at least one strip spring forms a complementary drive for pivotally driving the arbor. A timepiece barrel for pivotal assembly between a bottom plate and a bridge includes a spring housed between a pivoting drum and a ratchet and hooked between, at an outer end thereof, the drum, and at an inner end thereof, an arbor, the arbor pivoting integrally with the ratchet about a pivot axis.
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