Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent
1992-01-07
1993-10-12
Eldred, J. Woodrow
Acoustics
Geophysical or subsurface exploration
Seismic wave generation
181114, 181121, 367189, G01V 102
Patent
active
052527859
ABSTRACT:
A broad band seismic vibrator includes a hydraulically-operated actuator with a piston shaft depending from the actuator. A spherical member or ball is secured to an end of the shaft and received in a socket provided in an anvil. The spherical member or ball is securely clamped to the end and in its clamped condition affords the sole support for the actuator. Hydraulic means is provided for unclamping the spherical member to enable the positioning of the actuator in selected degrees of inclination from vertical and azimuth.
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Eldred J. Woodrow
Industrial Vehicles International
Scherback W. J.
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