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US 2021/0240141 A1Published application
Conductive balance-spring cord
AssigneeETA SA Manufacture Horlogere Suisse
InventorSylvain HUOT-MARCHAND
Life of this patent
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Abstract
A deposition method (500) of an electroconductive layer electrically connecting at least one outer coil (105) and a balance-spring stud (102) and representing at least 1%, particularly 5%, preferably 10% and/or at most 90%, particularly at most 75%, preferably at most 50% of at least one dimension of a horological balance-spring (101).
Claims11
A deposition method of an electroconductive layer on an oscillating system of a horological movement comprising a horological balance-spring with at least one internal coil attached by a collet;
- said deposition method comprising a step of:
- providing said oscillating system;
- and
- depositing at least a first electroconductive layer carried out by an atomiser (900) electrically connecting said at least one outer coil and said balance-spring stud and representing at least 1% of at least one dimension of said horological balance-spring,
- wherein said atomiser comprises at least a first electroconductive layer in liquid form surrounded by a sheathing gas so as to be unidirectional.
2 more elements
Dependencies are inferred from the claim text.