Combined resonator with improved isochronism
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United States of America Patent
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Feb 28, 2017
Grant Date -
Aug 25, 2016
app pub date -
Jul 7, 2015
filing date -
Sep 9, 2014
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Abstract
A timepiece assembly including a combined resonator with at least two degrees of freedom which includes a first linear or rotary oscillator with reduced amplitude in a first direction relative to which oscillates a second linear or rotary oscillator with reduced amplitude in a second direction substantially orthogonal to the first direction. The rotary oscillator includes a second weight carrying a sliding-block. A wheel set is arranged for application of a torque to the resonator, the wheel set including a groove in which the sliding-block slides with minimal play. The sliding-block is arranged at least either to follow curvature of the groove when present, or to rub with friction in the groove, or to repel the inner lateral surfaces of the groove by magnetically or electrically charged surfaces in the sliding-block.
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