Annual calendar mechanism for timepiece

Details Annual calendar mechanism for timepiece Annual calendar mechanism for timepiece

2007-11-27

2007-11-27

Miska, Vit (Department: 2833)

Horology: time measuring systems or devices

With calendar indicator

Movable ring or disk

C368S028000, C368S077000, C368S221000

Reexamination Certificate

active

11261919

ABSTRACT:
The annual calendar mechanism comprises a drive wheel set (1) fitted with a first finger (2) driving a date disc (4) through one step once a day and a second finger (5) driving a plate (6) secured to an annual wheel (7) arranged coaxially to the date ring at the end of the months of less than thirty one days. An intermediate wheel (8) connects the annual wheel (7) to the date ring (4) at the end of each month. The annual wheel (7) comprises twice as many teeth (30) as there are months in a year and the intermediate wheel (8) comprises a first wheel (40) meshed with the annual wheel (7) and a second wheel (50) fixed to the first wheel, said second wheel being meshed, at the end of each month, with a snug (60) arranged inside the date ring (4).

REFERENCES:
patent: 5432759 (1995-07-01), Vaucher
patent: 684 815 (1995-01-01), None
patent: 999 482 (2000-05-01), None
patent: 1 251 412 (2002-10-01), None

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