Rotary wheel set system of a horological movement

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12259689
APP PUB NO 20210405588A1
SERIAL NO

17338126

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Importance

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Abstract

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A rotary wheel set system of a horological movement with a rotary wheel set a first and a second bearing for a first and a second pivot of the arbor of the rotary wheel set, the wheel set including a mass center in a position of its arbor, the first bearing including an endstone including a main body equipped with a conical cavity configured to receive the first pivot of the arbor of the rotary wheel set, the first pivot being capable of cooperating with the cavity of the endstone to rotate in the cavity, at least one contact zone between the first pivot and the cavity being generated, the normals of the contact zone forming a minimum contact angle relating to the plane perpendicular to the arbor of the pivot, the minimum contact angle being less than or equal to 30°, preferably less than or equal to arctan (½).

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Patent Owner(s)

Patent OwnerAddress
ETA SA MANUFACTURE HORLOGERE SUISSEGRENCHEN

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Helfer, Jean-Luc Le Landeron, CH 95 322
Lechot, Dominique Les Reussilles, CH 57 185

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