Patent ID: 9122246
Filing Date: 2015-09-01
Classification: G04B

Abstract:
1. A regulating device for a timepiece including: an inertial balance including a balance staff arranged to be pivotally mounted in the timepiece, a balance bridge and a bearing carried by the balance staff and arranged to hold one end of the balance staff, a balance spring including an inner end integral with the balance and an outer end integral with a stud; a mechanism for securing the stud, the mechanism for securing the stud including a housing carried by the balance staff and arranged to receive the stud while allowing for the adjustment of the longitudinal position thereof, the securing mechanism further including an elastic arm arranged to bear laterally on the stud so as to immobilise the stud against a wall of the housing; wherein the housing is formed in a stud holder pivoted on the balance bridge concentrically to the balance staff, and wherein the elastic arm is arranged to pivot concentrically to the balance staff, with respect to the balance bridge and with respect to the stud holder, between a first position where the elastic arm immobilises the stud and a second position where the elastic arm is disengaged from the stud so as to allow the stud to be inserted into or removed from the housing.