Perpetual calendar clock

Details Perpetual calendar clock Perpetual calendar clock

2008-12-15

2009-10-27

Miska, Vit W (Department: 2833)

Horology: time measuring systems or devices

With calendar indicator

Movable drum

C368S222000, C368S235000

Reexamination Certificate

active

07609589

ABSTRACT:
A perpetual calendar clock includes an outer case that has a month window, a date window, a day-of-the-week window, and a clock window formed on the surface thereof. The clock includes a rotatory wheel set, a driving apparatuses, a clock-control unit, and a battery set, which are all fixed within the hollow outer case. The rotatory wheel set has a month wheel, a date wheel, and a day-of-the-week wheel, which, respectively, are aligned to the month window, the date window, and the day-of-the-week window of the outer case. Also, the clock-control unit is aligned to the clock window. The clock-control unit sends a signal for controlling and actuating deflecting rods, micro switches, and touch switches of the driving apparatuses so that the driving apparatuses act with the buses on a flexible circuit board disposed within one of the wheels; then, another control signal is sent to another wheel. Thus, the month wheel, the date wheel and the day-of-the-week wheel are actuated so as to turn to the correct month, the date and the day-of-the-week.

REFERENCES:
patent: 2927418 (1960-03-01), Bauer
patent: 4027469 (1977-06-01), Yaguinuma
patent: 4122659 (1978-10-01), Hashimoto
patent: 4193256 (1980-03-01), Tobeta et al.
patent: 4214134 (1980-07-01), Ogihara et al.
patent: 4298972 (1981-11-01), Ogihara et al.
patent: 5274616 (1993-12-01), Shu
patent: 2005/0111305 (2005-05-01), Sheu

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