Wrist watch with alarm

Details Wrist watch with alarm Wrist watch with alarm

1980-06-27

1982-03-23

Miska, Vit W.

Horology: time measuring systems or devices

Signalling means

Time condition responsive

G04C 2116

Patent

active

043216994

ABSTRACT:
A wrist watch with an alarm having a vibratory plate supported at a point inside the bottom housing of the wrist watch. The vibratory plate comprises a piezoelectric element, a base electrode fixed on one side of the element. Audible time sound is emitted through the bottom housing, which produces transmitted vibrations by the application of AC voltage to the piezoelectric element.

REFERENCES:
patent: 2873573 (1959-02-01), Simon
patent: 3733804 (1973-05-01), Diersbock
patent: 3777472 (1973-12-01), Iiwuna
patent: 3788060 (1974-01-01), Kaisamura
patent: 3940255 (1976-03-01), Kasuda et al.
patent: 4045954 (1977-09-01), Ganter et al.

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