MECHANICAL HOROLOGICAL MOVEMENT COMPRISING A WHEEL SET CARRYING A DISPLAY MEMBER AND PROVIDED WITH A BRAKING DEVICE
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United States of America
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Issued Date -
Nov 14, 2024
app pub date -
May 7, 2024
filing date -
May 7, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
A mechanical horological movement includes a barrel, an escape wheel set associated with a mechanical resonator, a display wheel set configured to carry a display member including a chronograph hand and driven rotatably by the barrel, and a braking spring configured to generate a braking torque on the display wheel set when the display wheel set is subjected to a rotary drive torque to prevent trembling of the display member. The mechanical horological movement further includes an intermediate part, including a washer, located between the braking spring and an arbor of the display wheel set, the intermediate part being mounted to rotate freely on the arbor. The intermediate part and the braking spring are arranged so that the intermediate part remains stationary and non-rotating in normal operation. The braking spring overall exerts a pressing force over the intermediate part in the direction of the arbor to generate the braking torque.
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