Patent ID: 9599961
Date: 2017-03-21
CPC Classifications: G04B

Claim:
1. A tourbillon mechanism for a timepiece movement, comprising: a balance mechanism; an escapement mechanism; and a carriage mounted in a structure of the timepiece movement in rotation about a tourbillon axis, the balance mechanism comprising a spring and a balance wheel mounted in the carriage to pivot about said tourbillon axis, the escapement mechanism comprising an escape wheel with teeth and a pallet-lever comprising pallet-stones configured to engage said teeth, the pallet-lever being mounted in the carriage and coupled in rotation to the carriage through a pivot device, wherein the escape wheel encircles the tourbillon axis and is attached to or integral with said structure of the timepiece movement and the pivot device is configured to pivot elastically and to support the pallet-lever, and wherein the pivot device includes one or more elastic arms connecting the pallet-lever to an anchoring area attached to, or integral with the carriage.