Timepiece mechanism provided with a magnetic gear

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12078964
SERIAL NO

17374154

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Abstract

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A timepiece mechanism including a magnetic gear formed of a first wheel and a second wheel, the first wheel being provided with first alternating magnetic poles forming a magnetic toothing and the second wheel being provided with a toothing made of ferromagnetic material which has a magnetic coupling with the magnetic toothing, such that, when one of the first or second wheels is driven in rotation, this wheel rolls, via the magnetic coupling, over a geometric circle centred on the other wheel and linked to this other wheel. The magnetic gear further includes a ferromagnetic element arranged relative to the first wheel so as to offset at least most of a magnetic disturbance torque to which the first wheel is subjected, resulting from the magnetic coupling, this magnetic disturbance torque having a periodic variation in intensity according to the angular position of the first wheel.

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Patent Owner(s)

Patent OwnerAddress
THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTDRUE DES SORS 3 MARIN 2074

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Born, Jean-Jacques Morges, CH 130 1215
Imboden, Matthias St-Blaise, CH 36 32
Mignot, Jean-Pierre Pontarlier, FR 23 130
Nicolas, Cédric Neuchâtel, CH 21 38

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