Mechanical timepiece movement with power reserve detection
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United States of America Patent
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-
Dec 25, 2018
Grant Date -
Apr 5, 2018
app pub date -
Oct 4, 2017
filing date -
Oct 4, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The mechanical timepiece movement with power reserve indication comprises at least one barrel system connected to a winding wheel of a differential gear and an unwinding wheel of the differential gear. An intermediate wheel of the differential gear is connected to a cam wheel set to drive it in rotation via a reducing stage. A rack, which acts on a power reserve indicator, is in contact with the cam wheel set. When the power reserve is at zero, a locking part of the rack comes into contact with a locking member to lock the movement at an unwinding output of the barrel system or in contact with the unwinding wheel of the differential gear.
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