REGULATING SYSTEM FOR A MECHANICAL WATCH
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Accused Products
Abstract
Regulating members for a mechanical timepiece, specifically a system based on magnetic interaction between a resonator, in a form of a tuning fork for example, and an escape wheel, as a magnetic escapement. In the system plural areas of magnetic interaction between the resonator and the escape wheel are arranged such that torques produced at the escape wheel by the interactions compensate each other if the escape wheel is not synchronized at the frequency of the resonator. This results in negligible torque in the escape wheel when the escape wheel rotates slowly in a direction of an arrow or opposite direction. This allows the timepiece to start with a low mainspring torque and without any start procedure or device and provides better resistance of the timepiece against a loss of synchronization in event of a shock.
14 Citations
26 Claims
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1-13. -13. (canceled)
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14. A system for regulating a mechanical timepiece based on magnetic interaction between a resonator and an escape wheel, the interaction creating radial and tangential forces acting on the escape wheel and generating torques therein,
wherein the system is configured so that torques due to the tangential forces act in opposite directions and cancel each other out when the resonator is stationary and a torque is applied to the escape wheel.
Specification