Alarm deactivation system employing timed manual switch operatio

Details Alarm deactivation system employing timed manual switch operatio Alarm deactivation system employing timed manual switch operatio

1980-12-22

1982-09-28

Roskoski, Bernard

Horology: time measuring systems or devices

Chronological

With simultaneous time indicating means

368262, G04C 2100

Patent

active

043521703

ABSTRACT:
An alarm clock with a local alarm system including a movement-operated switch, a relay with normally closed contacts, and an audible alarm device connected to the power lines through the movement-operated switch and said relay contacts. Said relay is energized by a circuit including a switch closed by lifting an operating knob, or in an alternative form, by lifting the entire clock. The system includes time delay relay latching means to prevent immediately latching the alarm circuit open but requiring the user to maintain the lifting force for a predetermined delay period, sufficient to produce wakefulness of the user, after which the alarm circuit is latched open. A signal lamp shows the delay period to be in effect until the delay period has been completed, thereby requiring the user to manually maintain the lifting force until the lamp becomes extinguished.

REFERENCES:
patent: 3797223 (1974-03-01), Oliveri
patent: 4246651 (1981-01-01), Komatsu et al.

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