Closed air system seismic wave generator
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United States of America Patent
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-
Sep 13, 1988
Issued Date -
N/A
app pub date -
Jul 24, 1987
filing date -
Jan 3, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for generating seismic waves including an upstanding hollow cylindrical housing within which an impact piston latched in a cocked position is adapted to be propelled downwardly by high pressure expanding gas in the confined chamber above it within the housing so as to strike a target plate resting on the ground adjacent the lower end of the housing. After each blow against the target, the piston is retracted upwardly by means of hydraulic cylinders which recompress the gas in the chamber to its original pressure. Since there is no need for recharging the pressure chamber after each shot, economical rapid cycle operation is facilitated.
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