Heart cam for a timepiece or chronograph
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United States of America Patent
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Mar 21, 2017
Grant Date -
Dec 8, 2016
app pub date -
May 18, 2016
filing date -
Jun 2, 2015
priority date (Note) -
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Abstract
Timepiece wheel set (1) including an arbor (3) carrying a wheel (4), and a heart cam (2) in an angularly indexed position with respect to the wheel (4), the heart cam (2) is freely mounted in a radial direction (R) with respect to the axis (D) of the arbor (3), and is returned in a neutral position towards the axis (D) by at least one flexible element (6), which is either a strip (25; 26) incorporated in the heart cam (2), or a spring (60) inserted between the wheel (4) and the heart cam (2), and the flexible element (6) is dimensioned to damp impacts applied to a peripheral cam track (23) comprised in the heart cam (2).
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