Calendar mechanism having means driving and correcting two indicators
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United States of America Patent
Stats
-
Jan 30, 2007
Grant Date -
Dec 22, 2005
app pub date -
Nov 19, 2004
filing date -
Nov 25, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The calendar mechanism for a watch includes two rotating indicators provided with respective toothed wheels (11, 14), indicating for example the date and the phase of the moon or the day of the week, and drive lever (21) provided with two beaks (22, 23) for making the corresponding indicator move forward one step, depending upon whether it is pivoting in one direction or the other. The daily movement forward of the indicators is assured by a drive wheel (20) making one revolution per day and provided with a pin (38) which cooperates with a cam surface (33) of the drive lever. In order to correct the indicators independently of each other, a gear train (44) actuated by a control stem of the watch causes a correction wheel (50) to rotate, which acts on a nose of the drive lever (21) to pivot the latter selectively in one direction or the other. The correction wheel (50) mounted on a lever (46), controlled by a cam (39) of the drive wheel (20), is released from the correction wheel (44) as long as the drive wheel actuates the drive lever.
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