Alarm signaling time detecting device for leaf type digital cloc

Details Alarm signaling time detecting device for leaf type digital cloc Alarm signaling time detecting device for leaf type digital cloc

1979-12-27

1981-11-03

Miska, Vit W.

Horology: time measuring systems or devices

Display trains

For drum or plate dial type

368254, G04B 1902, G04C 2116

Patent

active

042989728

ABSTRACT:
A first detecting means for detecting the phase of an hour time wheel and a second detecting means adapted to cooperate with a projection provided with each of some of a plurality of minute indication leaves, said some leaves occurring at a constant interval, are provided. The first and second detecting means are associated together, and with detection of phase by the first detecting means the second detecting means is rendered capable of cooperation with the projection of a minute leaf. Subsequently, when the phase of the projection is detected by the second detecting means, an alarm device is operated.

REFERENCES:
patent: 3922843 (1975-12-01), Kobayashi
patent: 4005570 (1977-02-01), Miyamoto et al.
patent: 4045627 (1977-03-01), Kitai et al.
patent: 4122659 (1978-10-01), Hashimoto

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