Depth measuring device for watches, and watches incorporating such a measuring device
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United States of America Patent
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Aug 17, 2010
Grant Date -
Dec 11, 2008
app pub date -
Dec 12, 2006
filing date -
Dec 15, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
The depth measuring device for a diving watch with a chronograph mechanism, includes a plunger moved by external pressure through a rolling membrane against the action of a return element. The plunger acts on cams belonging to a circular slide mounted in a casing ring. The movement of the slide is transmitted by a gear train to a depth needle and to a dead needle. A pressure sensing device has a sliding plunger mounted inside the winding button. This plunger acts on a control device for automatically starting and stopping the chronograph mechanism. A locking device is used to lock and release the control device and displays a diving flag in the released position. The gear chain displays a safety flag at a predetermined depth. A resetting device allows the various mechanisms and devices to be reset to zero.
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