Barrel for timepiece
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United States of America Patent
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-
Mar 15, 2016
Grant Date -
Dec 31, 2015
app pub date -
Jun 29, 2015
filing date -
Jun 30, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A barrel for timepiece movement, comprising a barrel shaft (20) around which is arranged, in a rotationally mobile manner, an assembly comprising a drum (30) and a cover (40) delimiting a housing (50) for receiving a barrel spring (51), the drum (30) and the cover (40) each having a wall (31, 41) extending from a peripheral end (34, 44) of the barrel to a central end of the barrel at the level of the barrel shaft (20), wherein at least a part of at least one of said walls (31, 41) has a variable thickness which increases continually with distance away from the peripheral end of the barrel.
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