Device for limiting the acceleration of an oscillating weight driving a mechanism of small volume
AssigneeETA SA Fabriques d'Ebauches
InventorJean-Philippe Rebeaud
Life of this patent
Estimating the term…
Abstract
A device for limiting the acceleration which an oscillating weight (1) used to drive or wind a power generator powering an instrument of small volume, can undergo, includes a bearing raceway (2) against which such weight abuts when it undergoes an acceleration substantially exceeding that occurring in normal use of the instrument. For this purpose, the weight (1) is elastically mounted on a moving support member (4) so as to move in the plane of such weight which is then braked by the bearing raceway (2) when the weight undergoes an acceleration which exceeds a certain maximum value.
Claims8
A device for limiting the acceleration of an oscillating weight rotating in a cage and mounted off-centre on a moving support member to drive or wind an power generator powering an instrument of small volume, wherein the cage includes a bearing raceway attached to the case included in the instrument, said bearing raceway is arranged at a small distance from the path travelled by the oscillating weight, and wherein said oscillating weight is elastically mounted on said moving support member so as to come into contact with said bearing raceway and to brake said weight when it undergoes an acceleration substantially exceeding that occurring in normal use of said instrument.
Dependencies are inferred from the claim text.