Method of manufacturing a timepiece shaft

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United States of America Patent

PATENT NO 11982977
APP PUB NO 20220373977A1
SERIAL NO

17877578

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Abstract

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The method of manufacturing a timepiece shaft (1) includes grinding a ceramic piece, especially to form a balance shaft (1), having a functional portion (2a; 2b) including at least one part (221a; 221b) of a pivot-shank (22a; 22b) and/or at least one part (211a; 211b) of a pivot (21a; 21b), the first functional portion being made of ceramic and a first outer diameter (D1) of the first functional portion being less than 0.5 mm, or less than 0.4 mm, or less than 0.2 mm, or less than 0.1 mm.

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Patent Owner(s)

Patent OwnerAddress
ROLEX SA3-5-7 RUE FRANCOIS DUSSAUD GENEVA 26 CH-1211

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Linck, Vannina Saint-Julien-en-Genevois, FR 5 3

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