Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Reexamination Certificate
2010-04-30
2011-11-22
Phillips, Forrest M (Department: 2832)
Acoustics
Geophysical or subsurface exploration
Seismic wave generation
C181S119000, C181S120000, C181S122000
Reexamination Certificate
active
08061471
ABSTRACT:
A seismic vibrator has a base plate with at least four isolators isolating a frame from the base plate. Each of these isolators is offset from the plate's footprint on shelves to free up area on the plate's top surface. An accelerometer disposed directly on the base plate detects the acceleration imparted to the plate. To reduce flexing and bending, the plate has an increased stiffness and approximately the same mass of a plate for a comparably rated vibrator. The accelerometer disposes at a particular location of the plate that experiences transition between longitudinal flexing along the plate's length. This transition location better represents the actual acceleration of the plate during vibration and avoids overly increased and decreased acceleration readings that would be obtained from other locations on the plate.
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Inova Ltd.
Phillips Forrest M
Wong Cabello Lutsch Rutherford & Brucculeri LLP
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