Electric signaling arrangement for delivery of waking signals

Details Electric signaling arrangement for delivery of waking signals Electric signaling arrangement for delivery of waking signals

1976-03-26

1978-04-11

Schaefer, Robert K.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

58 2115, 3403094, H01H 700

Patent

active

040841049

ABSTRACT:
An electric clock having clockwork is provided with a signaling arrangement hich automatically resets for operation of an alarm or waking signal and does not require resetting each day by the user. Resetting is accomplished by a contact device which switches on once during each twenty four hour period at a preselected hour corresponding to the hour at which the alarm is to begin. A second contact device switches on for a brief period during each hour and triggers a bistable multivibrator which is automatically reset each hour. The output of the bistable device is applied to a logic circuit whose other input derives from a third contact device setting the minute at which the alarm is to be initiated.

REFERENCES:
patent: 3456123 (1969-07-01), Pihl
patent: 3728855 (1973-04-01), Preiser
patent: 3822547 (1974-07-01), Fujita
patent: 3834153 (1974-09-01), Yoda et al.
patent: 3996734 (1976-12-01), Kitai et al.

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