Electro-mechanic calendar timepiece
AssigneeEbauches S.A.
InventorDaniel Rochat
Life of this patent
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Abstract
An electro-mechanic calendar timepiece includes a braking device for generating torque to prevent drifting or floating of the movement gearing when the intermittent calendar driving mechanism is not rotating. When the calendar driving mechanism is rotating the braking device is not operating and the calendar driving mechanism cooperates with a lever arm and spring to generate torque to prevent the floating of the movement gearing.
Claims5
An improved calendar electro-mechanic timepiece including a movement gearing and a driving mechanism for at least one calendar indicating member, said driving mechanism including intermittent rotating means for intermittently driving said calendar indicating member and torque generating means for preventing floating of said movement gearing when said drive means is rotating, said improvement comprising:
- brake means for generating torque for preventing floating of said movement gearing when said drive means is not rotating, said brake means cooperating with said driving mechanism to sychronise operation of said torque generating means and said brake means.
Dependencies are inferred from the claim text.