Patent ID: 11868092
Assignee: THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTD
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 18:
19. The timepiece according to claim 3, wherein the electromagnetic assembly comprises a bipolar magnet, mounted on a balance of the mechanical resonator and having a magnetization axis in a geometric plane comprising the axis of rotation of the balance, and the at least one coil which is rigidly connected to the support of the mechanical resonator and arranged so as to be traversed by the magnetic flux of the bipolar magnet, a median half-axis starting from the axis of rotation of the balance and passing via said axial magnetization axis defining a reference half-axis when the resonator is at rest and thus in the neutral position thereof; and wherein the at least one coil exhibits at the center thereof an angular lag relative to the reference half-axis and said bipolar magnet is arranged on the balance such that mere coupling between said bipolar magnet and the at least one coil can induce in each oscillation period of the mechanical resonator, in said effective functioning range, two voltage lobes of the same polarity which form respectively said first voltage lobe and said second voltage lobe.