Annual date mechanism for clock movement
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United States of America Patent
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-
Jun 1, 2004
Grant Date -
Aug 14, 2003
app pub date -
Feb 6, 2003
filing date -
Feb 11, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This annual date mechanism comprises a correction cam (1a) in kinematic connection with a date indicating runner (1), a correction rocker (8) engaged on the one hand with said correction cam (1a) and, on the other hand, with an annual cam (18). A spring (9) presses the correction rocker (8) against the cams (1a, 18). The correction cam (1a) comprises a portion (1a') for arming said spring (9), followed by a portion (1a*) sized to cause said date runner (1) to move by one step between '31' and '1', under the pressure of said spring (9).
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