Finger ring provided with an adapter device for automatically adjusting the ring size

摘要

A ring (1) defines a seat (3) for being worn on a finger and has an adapter device (10) capable of automatically adjusting the diameter of the seat (3); the adapter device (10) is provided with at least one arm (11) coupled to a structure (2) of the ring (1) so as to move between a retracted position and a forward position with respect to the center of the seat (3); the arm (11) is pushed to the forward position by at least one elongated spring (22), which substantially extends in a circumferential direction and has a first end portion (23) fixed to either the structure (2) or the arm (11), and a second end portion (28), opposite to the first (23) and arranged resting against the other (2) of either the structure or the arm.