Electronically operated clock for hearing impaired persons

Details Electronically operated clock for hearing impaired persons Electronically operated clock for hearing impaired persons

1990-06-25

1991-05-14

Miska, Vit W.

Horology: time measuring systems or devices

Combined with disparate device

368256, G04B 4700, G04C 2116

Patent

active

050162292

ABSTRACT:
An electronic circuit for energizing an electric lamp associated with an alarm clock. Alarm circuitry within the clock energizes an electronic flasher that delivers a control signal to a bidirectional switch means in an A.C. circuit containing the lamp. The switch means triggers a two direction silicon controlled switch means in the lamp circuit. The lamp provides an optical alarm that can be used as a wake-up signal by persons who are deaf but who can see.

REFERENCES:
patent: 1943598 (1934-01-01), Gourley
patent: 2045798 (1936-06-01), Purvis
patent: 2276339 (1942-03-01), Price
patent: 2598978 (1952-06-01), DeMartin
patent: 3545195 (1970-12-01), Krischrer

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