Timepiece movement comprising a device for equalising a motor torque

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United States of America Patent

PATENT NO 10474109
APP PUB NO 20180107166A1
SERIAL NO

15686463

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Timepiece movement including a mechanism, a spring barrel for driving the mechanism, and an equalization device connected to the spring barrel. The spring barrel includes a drum and a motor spring to exert a driving torque which is variable as a function of the degree of winding-up of the motor spring. The equalization device is driven by the spring barrel and exerts an auxiliary torque which varies as a function of the degree of winding-up of the motor spring to counter variations in the motor torque. The equalization device includes a first and second magnetic elements being displaced from each other by exerting a magnetic force which varies as a function of the relative position of the first and second magnetic elements and produces the auxiliary torque.

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Patent Owner(s)

Patent OwnerAddress
MONTRES BREGUET S AL'ABBAYE 1344

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Legeret, Benoit Ecublens, CH 24 73
Sarchi, Davide Zurich, FR 82 548

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