Back to results
US 11,144,011 B2Granted
Device for winding a timepiece movement
AssigneeRolex SA
InventorsSergio de Almeida Graça, Vannina Linck
Life of this patent
Estimating the term…
Abstract
A component of a winding device, in particular an automatic winding device, of a timepiece movement, wherein it is made of austenitic stainless steel and wherein it comprises at least one friction surface hardened by carbon or nitrogen type atoms introduced into the austenitic stainless steel over a predetermined depth.
Claims21
A winding device of a timepiece movement, comprising:
- first and second metal components that cooperate through an interface that is subjected to friction,
- wherein at least the first of the metal components is an austenitic stainless steel component,
- wherein the first of the metal components comprises at least one first metal friction surface,
- wherein the second of the metal components comprises at least one second metal friction surface,
- the at least one first metal friction surface being configured to be subjected to friction against the at least one second metal friction surface at the interface,
- wherein the at least one first metal friction surface is hardened by carbon or nitrogen type atoms introduced into the austenitic stainless steel over a predetermined depth, and
- wherein the first and second metal friction surfaces of the first and second metal components are configured to be subjected to friction at the interface at a rate of at least 5 kHz.
4 more elements
Dependencies are inferred from the claim text.