Anti-adhesion device for a balance spring on a bar
AssigneeETA SA Manufacture Horlogere Suisse
InventorsLaurent Klinger, Thierry Conus
Life of this patent
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Abstract
The invention relates to a timepiece movement including a resonator formed by the cooperation of a balance with a balance spring, said resonator being pivotally mounted between a bar and another part such as a bar or a main plate. According to the invention, the timepiece movement further includes a device preventing adhesion of said balance spring against said bar including a surface decreasing means formed on the bar for limiting the contact surface when the faces of said balance spring and of said bar touch each other.
Claims9
A timepiece movement including a resonator formed by the cooperation of a balance with a balance spring, the resonator being pivotally mounted between a bar and another part, wherein the bar includes a surface decreasing means formed on the bar for limiting the contact surface when the faces of the balance spring and of the bar touch each other, and wherein the surface decreasing means includes at least one recess in relation to the faces of the balance spring and of the bar which face each other.
A timepiece movement including a resonator formed by the cooperation of a balance with a balance spring, the resonator being pivotally mounted between a bar and another part,
- wherein the bar includes a surface decreasing means formed on the bar for limiting the contact surface when the faces of the balance spring and of the bar touch each other, and wherein the surface decreasing means includes at least one protruding portion in relation to the faces of the balance spring and of the bar which face each other.
Dependencies are inferred from the claim text.