Communications – electrical: acoustic wave systems and devices – Signal transducers – Vibrator-type transmitter
Patent
1996-10-18
1997-09-09
Eldred, J. Woodrow
Communications, electrical: acoustic wave systems and devices
Signal transducers
Vibrator-type transmitter
181113, 181121, 367 75, H04R 1100, G01V 102
Patent
active
056663285
ABSTRACT:
A three-axis seismic vibrator is provided which imparts compressional and shear wave seismic vibrations, either sequentially or simultaneously, into the Earth's surface. The seismic vibrator includes an earth-contacting baseplate which transmits vibrational energy into the Earth's surface; a support structure; a vibrator assembly pivotally supported at one end by the support structure; and servo-hydraulic control circuits which activate reciprocal vibration along the vibratory axis of the vibrator assembly and sustained oscillatory vibration of the vibrator assembly. The vibrations thus generated are transferred to the baseplate and injected into the Earth's surface. These vibrations and their reflections can then be recorded and analyzed to determine the mineral content of the Earth's surface in the immediate area.
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Crowell John Mark
Evans Rhys Michael
Teske James Edward
Eldred J. Woodrow
Headley Tim
I/O Exploration Products (U.S.A.), Inc.
Moetteli John
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