Electric alarm clock

Details Electric alarm clock Electric alarm clock

1978-03-22

1980-12-30

Weldon, Ulysses

Horology: time measuring systems or devices

Signalling means

Time condition responsive

368250, G04B 2300

Patent

active

042427487

ABSTRACT:
An alarm clock has a clockwork which drives a 12-hour display and a waking contact which is settable over a 12-hour range. The contact works into a mono-flop or flip-flop to generate a signal in each successive 12-hour cycle at the time set by the contact and this signal is applied to a flip-flop which can energize a signal generator via circuitry ensuring the application of only one signal from the timing flip-flop during each 24-hour period.

REFERENCES:
patent: 3946549 (1976-03-01), Cake
patent: 3949240 (1976-04-01), Saito et al.
patent: 4081754 (1978-03-01), Jackson
patent: 4084104 (1978-04-01), Scheer et al.

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