Patent ID: 9411316
Filing Date: 2016-08-09
CPC Classification: G04B,G04F

Claim Text:
1. A coupling device for timepieces, in particular for time-setting devices or chronograph watches, the device comprising: an entry wheel, a coupling wheel meshing with the entry wheel, and at least one first exit wheel, said coupling wheel being disposed in a manner substantially coplanar relative to the plane of rotation of the entry wheel and of the first exit wheel and being arranged such that it is adapted to tilt relative to said plane of rotation so as to be able to occupy at least a first coupling position in which the coupling wheel meshes with the entry wheel and the first exit wheel and a second coupling position in which the coupling wheel meshes with the entry wheel and is decoupled from the first exit wheel, the device also comprising a movable element allowing control of the change of position between the first and the second position of the coupling wheel, wherein said coupling wheel defines an axis of rotation adapted to be inclined relative to the normal to said plane of rotation of the entry wheel and of the first exit wheel by being mounted pivotably at each of the ends thereof, at least one end of said axis of rotation being mounted on said movable element, and in that the ratio between the diameter of the coupling wheel and the height of the axis of rotation comprised between the intersection of said axis of rotation with said plane of rotation and the end mounted on the movable element is greater than 1.5:1.