Electronic alarm watch

Details Electronic alarm watch Electronic alarm watch

1980-10-10

1983-06-21

Roskoski, Bernard

Horology: time measuring systems or devices

Signalling means

Time condition responsive

368290, 340388, G04C 2100

Patent

active

043891233

ABSTRACT:
A waterproof construction around a miniature buzzer incorporated in an electronic alarm watch depends on a gasket alone. The construction is such that the gasket can secure a resonant plate without any storage of distortion in the resonant plate. This feature makes it possible to provide the electronic alarm watch having a stable performance for acoustic emission.

REFERENCES:
patent: 3577876 (1971-05-01), Spadini
patent: 3939646 (1976-02-01), Uchiyama
patent: 4004410 (1977-01-01), Kawamata
patent: 4075828 (1978-02-01), Klingenberg
patent: 4197697 (1980-04-01), Mori et al.

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