Generator driving device for an instrument of small volume
AssigneeETA SA Fabriques d'Ebauches
InventorLaurent Kaelin
Life of this patent
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Abstract
The power generator (1) powers an instrument of small volume and is driven, via a gear train, by an oscillating weight (2), said train including a plurality of wheels and pinions (18, 4, 6, 19) arranged in a chain (3). The chain includes a sliding wheel and pinion (4) arranged to disengage from at least one of the other wheel and pinions (18) when the weight (2) is subjected to an acceleration substantially exceeding that occurring during normal use of the instrument.
Claims7
A driving device for a power generator for powering an instrument of small volume, said device including a gear train driving said generator from an oscillating weight moved by gravity, said train including a plurality of wheels and pinions arranged in a chain, wherein the chain includes a sliding wheel and pinion arranged to disengage from at least one of the other wheel and pinions and thus to interrupt said chain when the oscillating weight is subjected to an acceleration substantially exceeding that occurring during normal use of said instrument.
Dependencies are inferred from the claim text.