Timepiece
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United States of America Patent
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Oct 18, 2011
Grant Date -
Mar 12, 2009
app pub date -
Sep 8, 2008
filing date -
Sep 7, 2007
priority date (Note) -
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Abstract
A timepiece comprising a main energy storing device, a gear train coupled to the main energy storing device, a tensioning element coupled to the gear train, the tensioning element configured to be driven about a tensioning axis in cyclic steps, a tensioning control system configured to control the tensioning element, a storage hairspring having a first end and a second end, the first end connected to the tensioning element, a wheel connected to the second end of the storage hairspring, a clockwork movement rotatably driven by the wheel, an escapement coupled to the clockwork movement and a device configured to be switched in a stepwise manner and driven rotatably in cyclic steps by an element of the gear train.
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