Electronic timepiece equipped with alarm

Details Electronic timepiece equipped with alarm Electronic timepiece equipped with alarm

1978-07-05

1980-06-24

Miska, Vit W.

Horology: time measuring systems or devices

Signalling means

Time condition responsive

368 73, G04C 2116, G04C 2100, G04B 2312

Patent

active

042088666

ABSTRACT:
In an analog type of timepiece equipped with an alarm, an alarm time coincidence detection mechanism and a zero seconds detection mechanism are provided whereby switch contacts are closed when alarm time coincidence and zero seconds are detected respectively. A logical product is formed by combining signals from said switch contacts such that an operating signal to actuate an alarm device is produced with a high degree of accuracy. A memory circuit is incorporated to eliminate the effects of imperfect switch contact.

REFERENCES:
patent: 507959 (1893-10-01), Wtman
patent: 3545196 (1970-12-01), Vazzano et al.
patent: 3738098 (1973-06-01), Scheer
patent: 3745761 (1973-07-01), Tsuruishi
patent: 3834153 (1974-09-01), Yoda et al.

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