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AssigneeETA SA Manufacture Horlogere Suisse
InventorsIvan Villar, Pascal Winkler
Estimating the term…
A regulating member (1) for a horological movement including an inertial mass, for example a balance (23), a balance spring (25), a balance cock (22), and an actuation system (20) for adjusting the rate of the balance spring (25), the balance spring (25) including a coiled ribbon (2) and device (30) for adjusting the stiffness of the balance spring, which device is provided with a resilient element (5) arranged in series with the coiled ribbon (2), the adjustment device (30) including a pre-stress device (6) for applying a variable force or torque to the flexible element (5), the actuation system (20) including an eccentric actuating the pre-stress device (6) of the adjustment device (30).
A regulating member (1) for a horological movement comprising a balance, a balance spring (25), a balance cock (22), and an actuation system (20) for adjusting the rate of the balance spring (25), the balance spring (25) comprising a coiled ribbon (2) and means (30) for adjusting the stiffness of the balance spring, which means are provided with a resilient element (5) arranged in series with the coiled ribbon (2), the adjustment means (30) comprising prestressing means (6) for applying a variable force or torque to the flexible element (5), wherein the actuation system (20) comprises an eccentric (10) actuating the prestressing means (6) of the adjustment means (30).
Dependencies are inferred from the claim text.