US 11,927,921 B2
Oscillating winding mass provided with a decorative element for automatic timepiece movement
Loïc Oberson, Morges (CH)
Assigned to The Swatch Group Research and Development Ltd, Marin (CH)
Filed by The Swatch Group Research and Development Ltd, Marin (CH)
Filed on Jan. 28, 2021, as Appl. No. 17/161,008.
Claims priority of application No. 20161893 (EP), filed on Mar. 9, 2020.
Prior Publication US 2021/0278804 A1, Sep. 9, 2021
Int. Cl. G04B 5/16 (2006.01)
CPC G04B 5/16 (2013.01) 13 Claims
OG exemplary drawing
 
1. An oscillating winding mass (1) of a movement of a timepiece, said oscillating winding mass (1) being intended to be mounted for rotation on an arbor of the movement, said mass (1) comprising a main element (2) formed as a ring conferring the overall form of the oscillating winding mass (1) and comprising an attachment (6), which is circular and is formed at a first portion of a circumferential edge of the ring, for fixing on the movement, a heavy part allowing the oscillation of the mass (1) in response to the movement of the timepiece and to the force of gravity, and a decorative element (3) fixed to the main element (2) by at least one end (11) embedded in the attachment (6) of the main element (2), the main element (2) comprising a through opening (9), the decorative element (3) being arranged at least partly in said opening (9), the main element (2) comprising two superimposed parts (4, 5) connected one to the other, the decorative element (3) is held by the end (11) between the superimposed parts (4, 5) of the main element (2).