Winding device for self-winding automatic watch
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United States of America Patent
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Dec 5, 2017
Grant Date -
Jan 7, 2016
app pub date -
Mar 20, 2014
filing date -
Apr 10, 2013
priority date (Note) -
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Abstract
A device for winding automatic watches, including an electrical energy source and a receptacle support including a surface configured to receive in abutment a back cover of a watch, the device configured to generate a magnetic and/or electrostatic field or eddy currents, in a fixed position underneath the bearing surface and generate, on a substantially annular angular sector, a magnetic and or electrostatic field that varies as a function of time and whose direction is orthogonal to the bearing surface, or generating eddy currents that vary as a function of time. The device can be provided for a watch including an automatic winding mechanism with an oscillating weight including a first ferromagnetic inner part and a second heavy metal peripheral part, and possibly with a paramagnetic conductive disc coaxial to the oscillating weight.
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