Patent ID: 8142070
Filing Date: 2012-03-27
Classification: G04B

Abstract:
1. A winding crown assembly for a timepiece including: a. a crown; b. an uncoupling mechanism comprising wherein the rigid ring cooperates with the elastically deformable element to drive the elastically deformable element in at least one rotational direction until a resistant torque opposed by the elastically deformable element exceeds a threshold value beyond which the elastically deformable element is deformed so as to interrupt the drive connection with the rigid drive ring, wherein the elastically deformable element further comprises coupling portions arranged to temporarily couple the elastically deformable element to the rigid drive ring, and separate centering portions arranged to center the elastically deformable element within the rigid drive ring; and wherein the coupling portions and the centering portions are shaped such that in rotation the coupling portions have one point of contact with the rigid drive ring and the centering portions have at least two separate points of contact with the rigid drive ring.