Constant-force device for indirect-second watches
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United States of America Patent
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Feb 14, 2006
Grant Date -
Aug 12, 2004
app pub date -
Oct 28, 2003
filing date -
Feb 10, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention refers to a constant-force device suitable for being integrated into a movement of watches, particularly wrist watches, with an indirect-second mechanism having an intermediate second pinion (14) driven by a second wheel (9) of the movement, and an indirect-second wheel (15). The constant-force device comprises a tensioning module (4, 5, 6, 7, 8), a cam (2), a lever (11), and a stop wheel (13). The stop wheel (13) of the constant-force device is mounted on the intermediate second pinion (14) of the indirect-second mechanism.
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