Contactless cylinder escapement
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United States of America Patent
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Mar 13, 2018
Issued Date -
N/A
app pub date -
Oct 5, 2016
filing date -
Dec 10, 2015
priority date (Note) -
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Abstract
Magnetic cylinder escapement, comprising a regulating wheel set cooperating with an escape wheel comprising actuators (6) at the periphery of a first disc, each comprising a first impulse part and a second stop part, generating or guiding magnetic fields parallel to the pivot axes, and arranged to work in attraction, via the first disc, with a second non-magnetically charged, soft ferromagnetic disc integral with the regulating wheel set, the mechanism comprising a conductive ferromagnetic plate, underneath but not in contact with the first disc, comprising a cutout surrounding, in a contactless manner, the periphery of the second disc, with a variable air-gap, and closing a magnetic circuit comprising an actuator, the first disc, the second disc, and a structure in which the escape wheel pivots and which carries the plate.
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