Seismic detector
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United States of America Patent
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-
May 5, 1987
Grant Date -
N/A
app pub date -
Apr 30, 1985
filing date -
May 1, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The disclosure is directed to an improved a seismic detector comprising: a container for containing liquid therein, liquid means being contained in the bottom of the container, a source of light for illuminating the inside of the container, a sensor means having at least one photoelectric device for transforming the light inside the container into electric signals, and a signal processor means for generating an output when the output of the sensor means exceeds a predetermined value.
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