Barrel shaft for a clock movement, barrel spring and barrel including such a spring and/or such a shaft
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United States of America Patent
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Sep 20, 2016
Grant Date -
Apr 2, 2015
app pub date -
Apr 4, 2013
filing date -
Apr 4, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a barrel spring (2) including: an inner end (5) and an outer end; a first portion (50) having a first height (H); a second portion (52) having a second height (h) that is smaller than the first height (H) and being located near the inner end (5); and, at the second portion, e.g. at the inner end, a first attachment element (51) suitable for being attached to the barrel shaft, wherein the second portion is to be inserted into a circumferentially extending groove provided on the barrel shaft.
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