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US 11,054,791 B2Granted
Timepiece rate adjustment method
AssigneeETA SA Manufacture Horlogere Suisse
InventorsThierry Conus, Pascal Winkler
Life of this patent
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Abstract
A method for adjusting a rate of a timepiece after encasing a movement to ensure a better rate for the timepiece.
Claims8
A method for adjusting a rate of a timepiece comprising:
- placing a movement including a balance/balance spring resonator inside a timepiece case without a back cover or without a whole of the back cover;
- measuring a rate of the timepiece;
- determining a correction value to be applied to a balance inertia to obtain a desired rate;
- altering the balance inertia according to the correction value by adding material to the balance by fitting the movement into the case without the back cover or without the whole of the back cover.
1 more element
Dependencies are inferred from the claim text.