Electronic wristwatch case

Details Electronic wristwatch case Electronic wristwatch case

1978-07-03

1980-06-10

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With simultaneous time indicating means

368 74, G04C 2134

Patent

active

042065909

ABSTRACT:
An electronic wristwatch case construction in which a sound-emitting cover has a battery replacement hole and a plurality of sound-emitting holes. A fixing ring is disposed in concentric relationship with respect to the battery replacement hole of the sound-emitting cover, and a vibrating plate cooperating with a piezoelectric vibrating element for an alarm is spaced from the sound-emitting cover. A battery hatch is detachably fastened to the fixing ring, and a sealing ring is disposed between the battery hatch and the fixing ring to provide a water-tight sealing therebetween.

REFERENCES:
patent: 3577876 (1971-05-01), Spadini
patent: 3777472 (1973-12-01), Iinuma
patent: 3879931 (1975-04-01), Yasuda et al.
patent: 4068461 (1978-01-01), Tassett et al.

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