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US 8,348,496 B2Granted
Mainspring
AssigneeRolex SA
InventorsDominique Gritti, Thomas Gyger, Vincent Von Niederhausern
Life of this patent
Estimating the term…
Abstract
Mainspring for a mechanism driven by a motor spring, especially for a timepiece, formed from a ribbon of metallic glass material. This ribbon is monolithic and has a thickness of greater than 50 μm.
Claims8
A mainspring for a mechanism driven by a motor spring, especially for a timepiece,
- wherein the mainspring is a single monolithic metallic glass ribbon having a thickness greater than 50 μm,
- wherein the monolithic metallic glass ribbon has a spiral-shaped curvature in a free state of the mainspring.
Dependencies are inferred from the claim text.