Oscillating winding mass provided with a rotating decorative element for automatic movement of a timepiece
AssigneeThe Swatch Group Research and Development Ltd
InventorYves Winkler
Life of this patent
Estimating the term…
Abstract
An oscillating winding mass (1) for a movement of a timepiece, the oscillating winding mass (1) being intended to be rotatably mounted on an axis of the movement. The winding mass includes a main element (2) and a decorative element (10), for example a logo or an acronym, a part of the winding mass (1) forming a heavy part (3) allowing the oscillation of the mass (1) in response to the movement of the timepiece and to the force of gravity, the main element (2) giving the general shape of the oscillating winding mass (1), the decorative element (10) being mechanically linked to the main element (2), the decorative element (10) being rotatably mounted on the main element (2).
Claims10
An oscillating winding mass (1) for a movement of a timepiece, said oscillating winding mass (1) being intended to be rotatably mounted on an axis of the movement, comprising a main element (2) and a decorative element (10), a part of the winding mass (1) forming a heavy part (3) allowing the oscillation of the mass (1) in response to the movement of the timepiece and to the force of gravity, the decorative element (10) being mechanically linked to the main element (2), the decorative element (10) being rotatably mounted on the main element (2) by a ball bearing (8) of the main element (2) to allow the decorative element (10) to rotate with contact of a portion of the decorative element (10) along balls (9) of the ball bearing (8) within the main element (2), the main element (2) including an opening (6) wherein the decorative element (10) is arranged, the main element (2) being made of amorphous metal,
- wherein the ball bearing (8) is arranged on the main element (2),
- wherein the ball bearing (8) is disposed in an internal face (7) of the opening (6),
- wherein the internal face (7) of the opening (6) includes rails (13, 14) for retaining the decorative element (10) in the opening (6), and the rails (13, 14) are circular,
- wherein the main element (2) overall and the decorative element (10), overall and within the opening (6) of the main element (2), both comprise anchor shapes, with the decorative element (10) being a smaller anchor shape than that of the main element (2),
- the anchor shapes, of both the main element (2) and the decorative element (10), comprise a neck and an arc, the neck being attached to the arc at an inner circumferential center of the arc, the neck being shaped as a straight segment (11), and the arc being shaped as a curved segment (12), and
- the arc and the neck of the smaller anchor shape of the decorative element (10) occupy less than half of a total space of the opening (6), and an end of the neck of the smaller anchor shape of the decorative element (10) is centered in the opening (6).
Dependencies are inferred from the claim text.