Oscillating winding mass provided with a decorative element for automatic timepiece movement
AssigneeThe Swatch Group Research and Development Ltd
InventorLoïc Oberson
Life of this patent
Estimating the term…
Abstract
The main element 2 is connected to the mechanism of the movement, having parts 4, 5, by an arbor about which it can turn. To this end, it comprises an attachment 6 for fixing to the movement, which is for example formed by a small ring arranged in the opening 9 of the ring of the main element 2. The attachment 6 is thus composed of the same material as the main element and is arranged in the same plane. By virtue of the attachment 6, the winding mass can make a circular movement about the arbor, when it oscillates.
Claims13
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).
A method for manufacturing an oscillating winding mass, 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 general form of the oscillating winding mass (1) and comprising an attachment (6), which is circular and is formed at a 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, wherein the method comprises a first step of manufacture of a main element (2) of the mass (1) in two superimposable parts (4, 5), a second step of manufacturing a decorative element (3), and a third step of assembling the main element (2) and the decorative element, (3) the decorative element (3) being held between the two parts (4, 5) by at least one end (11), 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), and wherein the method further comprises forming the attachment (6), which is circular, at the portion of the circumferential edge of the ring, for fixing on the movement.
Dependencies are inferred from the claim text.