Annual data mechanism for a timepiece movement

Horology: time measuring systems or devices – With calendar indicator – Movable ring or disk

Reexamination Certificate

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Details

C368S028000, C368S037000, C368S221000

Reexamination Certificate

active

11110251

ABSTRACT:
This mechanism comprises a date runner, a months satellite with five teeth on a pitch for twelve, secured to the date runner, a fixed planetary toothset and a drive member for driving the date runner comprising two drive fingers, the first intersecting the path of the toothset of the date runner, the second intersecting the path of the toothset of the months satellite. The latter is connected to the planetary toothset by a second satellite secured to it and the number of teeth of which is equal to a multiple of twelve, the number of teeth of the planetary toothset being chosen so that one of the five teeth of the months satellite is aligned with the axes of the satellites, of the drive member and of the date runner on the 30th of each month comprising less than 31 days.

REFERENCES:
patent: 4240249 (1980-12-01), Malkin et al.
patent: 5699321 (1997-12-01), Vaucher
patent: 5943299 (1999-08-01), Genta
patent: 6744696 (2004-06-01), Vernay et al.
patent: 374336 (1963-07-01), None
patent: 680630 (1992-10-01), None
patent: 685585 (1995-08-01), None
patent: 693691 (2003-12-01), None
patent: 0987609 (2000-03-01), None
patent: 1351104 (2003-10-01), None

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