US 9,785,115 B2Granted

Timepiece movement comprising a date correction mechanism

AssigneeETA SA Manufacture Horlogere Suisse

InventorsDavid Philippon, Olivier Mertenat, Baptist Wyssbrod

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Abstract

A timepiece movement including a first lever bearing a first drive wheel, a second lever bearing a second wheel for time setting, and a third lever bearing a date correction mechanism. The third lever is mounted to pivot on the second lever and arranged to move between a meshing position, in which the date correction mechanism cooperates with the date display mechanism, and a retraction position, in which the date correction mechanism is disconnected from the date display mechanism. The first and second levers are arranged to occupy at least one date correction position, in which the first drive wheel is kinematically connected to the date correction mechanism and is not kinematically connected to the second wheel for time setting, and a time setting position, in which the first drive wheel is kinematically connected to the second wheel for time setting and is not kinematically connected to the date correction mechanism, wherein the position of the second lever is modified by cooperation between the first lever and the second lever.

A timepiece movement comprising a control stem, a winding mechanism for winding the movement, a date display mechanism and a time display mechanism, wherein the timepiece movement comprises a first lever bearing a first drive wheel capable of being kinematically connected to the control stem, a second lever bearing a second wheel for time setting arranged to cooperate with the time display mechanism and capable of being kinematically connected to the first drive wheel, and a third lever bearing a date correction mechanism capable of being kinematically connected to the first drive wheel and also to the date display mechanism, wherein said third lever is mounted to pivot on the second lever and arranged to move between a meshing position, in which the date correction mechanism cooperates with the date display mechanism, and a retraction position, in which the date correction mechanism is disconnected from the date display mechanism, and wherein the control stem and said first lever and said second lever are arranged to occupy three positions:

a winding position, in which the control stem is kinematically connected to the winding mechanism for winding the movement and is not kinematically connected to the first drive wheel,
a date correction position, in which the control stem is kinematically connected to the first drive wheel, and the first lever and the second lever are positioned so that said first drive wheel is kinematically connected to the date correction mechanism and is not kinematically connected to the second wheel for time setting,
and a time setting position, in which the control stem is kinematically connected to the first drive wheel and the first lever and the second lever are positioned so that said first drive wheel is kinematically connected to the second wheel for time setting and is not kinematically connected to the date correction mechanism,
wherein the position of the first lever is modified by cooperation between the control stem and the first lever and the position of the second lever is modified by cooperation between the first lever and the second lever.

1 more element

Abstract

Claims10