Electric alarm watch

Details Electric alarm watch Electric alarm watch

1975-05-27

1976-08-31

Jackmon, E. S.

58 28B, 58 38R, 58 91, G04B 2312, G04C 304, G04C 2134, G04B 3900

Patent

active

039771776

ABSTRACT:
The invention concerns, in particular, an electric wristwatch having an alarm device. In accordance with the invention, the impulses produced for driving the electric movement in the watch are, also, used for operating or controlling the signal-source to the alarm device. For example, in an electric quartz watch the impulses can be extracted from any chosen stage of the frequency divider and after amplificaton can be used to control the signal-source to a buzzer. It is the low pulse repetition frequency of the driving impulses, in balance wheel type watches, which leads to a distinctive signal.

REFERENCES:
patent: 3318084 (1967-05-01), Patrick
patent: 3759029 (1973-09-01), Komaski
patent: 3863437 (1975-02-01), Barth et al.

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