Use of a non-magnetic coating to cover parts in a watch movement

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20040042349A1
SERIAL NO

10649304

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention proposes to improve the yield of a micro-generator (1) used for operating a timepiece. This micro-generator operates on the basis of the phenomenon of electromagnetic induction; it is thus desirable to limit the presence of magnetic masses in proximity to said generator as much as possible. Research carried out has shown that the finish coating covering the movement-blank parts (11, 12) arranged in proximity to the micro-generator brakes the latter when it is made of a magnetic material, and in particular a ferromagnetic material. Thus, the exclusive selection of non-magnetic materials for manufacturing the movement-blank and its coating is proposed.

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Patent Owner(s)

Patent OwnerAddress
ETA SA MANUFACTURE HORLOGERE SUISSESCHILD-RUST-STRASSE 17 GRENCHEN 2540

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Burdet, Denis Neuchatel, CH 4 8
Leuba, Frederic La Chaux-de-Fonds, CH 5 11

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