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US 9,329,572 B2Granted
Timepiece hand
AssigneeThe Swatch Group Research and Development Ltd
InventorsJean-Luc Helfer, Yves Winkler
Life of this patent
Estimating the term…
Abstract
A timepiece hand for abrupt acceleration is mounted to pivot around a staff so as to be able to indicate an item of information. The hand is made from an at least partially amorphous metal alloy.
Claims7
A method of using a timepiece hand mounted around a shaft so as to indicate an item of information, comprising:
- subjecting the hand at a given moment to an acceleration of at least 250,000 rad/s2,
- wherein the hand is able to withstand the acceleration without deforming,
- wherein said hand is made from a completely amorphous metal alloy comprising at least one metallic element.
Dependencies are inferred from the claim text.