Alarm clock

Details Alarm clock Alarm clock

1978-02-15

1980-07-01

Miska, Vit W.

Horology: time measuring systems or devices

Signalling means

Time condition responsive

368 71, 368259, G04C 2116, G04C 2100

Patent

active

042099692

ABSTRACT:
In a timepiece having a case and having a minute hand and an hour hand for indicating time, an alarm signaling device generates an alarm by detecting the phase of two sets of gears. One set of gears comprises an hour hand gear and an hour detecting gear and the other set comprises a minute hand gear and a minute detecting gear. The two sets of gears are concentrically mounted for rotation and the minute detecting gear is positioned between the minute gear and the one set of gears. The minute detecting gear has a contacting sliding contact with the minute gear. The alarm signaling device further includes an alarm signaling time setting wheel having an axis of rotation parallel to that of the two sets of gears and a first gear and a second gear engaging the minute detecting gear and the hour detecting gear respectively.

REFERENCES:
patent: 2779150 (1957-01-01), Chartier et al.
patent: 3996734 (1976-12-01), Kitai et al.
patent: 4000384 (1976-12-01), Kumazawa
patent: 4045627 (1977-08-01), Kitai et al.
patent: 4069658 (1978-01-01), Ito
patent: 4070822 (1978-01-01), Arai
patent: 4079581 (1978-03-01), Kitai et al.

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