Closed air system seismic wave generator

Details Closed air system seismic wave generator Closed air system seismic wave generator

1987-07-24

1988-09-13

Jordan, Charles T.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181119, 267124, 267129, 173119, G01V 1147

Patent

active

047702699

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.

REFERENCES:
patent: 3346251 (1967-10-01), Bittel
patent: 3642089 (1972-02-01), Parker et al.
patent: 3868097 (1975-02-01), Taylor
patent: 4100991 (1978-07-01), Airhart
patent: 4230201 (1980-10-01), Bays
patent: 4284164 (1981-08-01), Airhart
patent: 4284165 (1981-08-01), Airhart et al.
patent: 4484657 (1984-11-01), Barta
patent: 4702344 (1987-10-01), Airhart

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