Patent ID: 9164485
Filing Date: 2015-10-20
Classification: G04B

Abstract:
1. An oscillating body for a mechanical oscillating system of wristwatches, comprising: a plurality of mass weights arranged at even angle distances around a middle axis of an oscillating body and between a plurality of ribs connecting an inner section with an outer section of said body, each of the plurality of mass weights has a mass center of gravity that is radially offset from an axis and can rotate or swivel on the oscillating body parallel to the middle axis of the oscillating body, wherein each of the plurality of mass weights is held by a press fit with at least one projection in a bore hole of the oscillating body formed axially congruent with the axis (AM) of each of the plurality of mass weights, said at least one projection having an approximately same diameter as a diameter of said bore hole; and wherein each of the plurality of mass weights is held on the oscillating body by a permanent deformation of a partial section of the at least one projection to form a deformed section and each of the plurality of mass weights can rotate on their axis through application of a torque and the respective adjustment of the plurality of mass weights is reliably ensured by frictional forces; and wherein the oscillating body is made of a copper alloy having a density less than 10 kg/dm