DEVICE FOR DETECTING EARTHQUAKES Russian patent published in 1995 - IPC

Abstract RU 2034312 C1

FIELD: quick warning on earthquakes. SUBSTANCE: device has vibration detector which threshold of sensitivity is tuned to selected level of vibrations, oscillator, power amplifier and sound source which are connected to on another as it is described in invention specification. Peculiarities in design of sound source and speaker are also provided. EFFECT: increased functional capabilities due to possibility to warning during night and day time. 3 cl, 2 dwg

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RU 2 034 312 C1

Authors

Efremov Vladimir Anatol'Evich

Dates

1995-04-30—Published

1992-01-21—Filed