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US 7,613,077 B2Granted
Alarm control mechanism
AssigneeMontres Breguet S.A.
InventorEric Goeller
Life of this patent
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AssigneeMontres Breguet S.A.
InventorEric Goeller
Estimating the term…
An alarm control mechanism, which is of reduced size widthways and can trigger the striking mechanism with precision. The mechanism includes a group of coaxial wheels (1) including: an hour cam (3), which makes one revolution in 24 hours; a trigger wheel (4) provided with a pinion (6) and an external circular toothing (5), which cooperates with a striking mechanism trigger (30); a programming wheel (7) carrying a cam follower lever (8) and angularly positioned by means (25) for setting the alarm time; a retaining disc, which is called a surprise-piece (11) and is provided with a return spring (12); and a minute cam (14) that makes one revolution per hour. The lever (8) includes a pin (40), which can press against the cams (3, 14) and the surprise-piece (11), and a rack engaged on the pinion (6), such that a radial movement of the lever (8) pivots the trigger wheel (4) in relation to the programming wheel (7). The minute cam (14) includes two notches, for repeating the alarm striking mechanism after an interval of a few minutes.
An alarm control mechanism including a striking mechanism trigger, an hour cam, which is driven to make one revolution in 24 hours, and has a radial recess, a cam follower, which abuts approximately radially against the hour cam and the movement of which is capable of activating the striking mechanism trigger, and manual means for setting the alarm time, arranged to adjust the relative angular position of the hour cam and the cam follower,
Dependencies are inferred from the claim text.