Automatic variable-sound alarm clock

Details Automatic variable-sound alarm clock Automatic variable-sound alarm clock

1976-04-02

1977-12-06

Weldon, Ulysses

58 165, 58 16D, G04C 2116

Patent

active

040609731

ABSTRACT:
There is disclosed an alarm clock in which the alarm sound is changed automatically at periodic intervals. In the illustrative embodiment of the invention, the clock emits eight different alarm sounds, and the alarm sound is changed automatically every 24 hours. By so changing the alarm sound, a sleeper cannot become accustomed to one particular alarm signal, thereby becoming "immune" to it.

REFERENCES:
patent: 1858563 (1932-05-01), Schlenker
patent: 3420051 (1969-01-01), Matteson
patent: 3593148 (1971-07-01), Cummings
patent: 3611151 (1971-10-01), Fernandez
patent: 3835640 (1974-09-01), Hughes
patent: 3873921 (1975-03-01), Petrinec
patent: 3900798 (1975-08-01), Pomerantz et al.
patent: 3949303 (1976-04-01), Nishimura

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