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US 9,329,571 B2Granted
Mainspring for a timepiece
AssigneeNivarox-FAR S.A.
InventorsChristian Charbon, Maxime Govaerts, Pierre Cusin, Marco Verardo
Life of this patent
Estimating the term…
Abstract
A mainspring including a metallic strip wound on itself. The mainspring includes an excess thickness forming a bridle in one-piece with the strip.
Claims10
A mainspring comprising:
- a metallic strip wound on itself and including an outer coil, the outer coil including an excess thickness in one-piece with the strip between a start of the outer coil and before a free end of the outer coil which forms a base extending radially with a substantially uniform thickness towards an exterior of the mainspring;
- and
- at least one second strip forming a bridle in one-piece with the strip and that extends from the base and at least partially runs in a substantially parallel manner along an exterior of a non-thickened portion of the outer coil of the mainspring.
Dependencies are inferred from the claim text.