Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent
1993-07-06
1995-03-07
Pihulic, Daniel T.
Acoustics
Geophysical or subsurface exploration
Seismic wave generation
G01V 102
Patent
active
053960297
ABSTRACT:
A vibrator for producing seismic vibrations in the earth is carried by a vehicle. The vibrator has a base plate, a reaction mass and support plates and a lifting and lowering apparatus for raising and lowering the vibrator between a raised transportation position and a lowered operating position in which the base plate is pressed against the ground. The lifting and lowering apparatus includes piston and cylinder units each connected at one end to the vehicle chassis and at the other to a support plate. In one embodiment, the piston and cylinder units are attached to the vehicle by belt-type pivotable bearings to permit swiveling of the vibrator so that the base plate is tiltable to adapt to an uneven earth surface. In another embodiment, the piston and cylinder units are attached to the vibrator by spherical pendulum support bearings which also allow swiveling and tilting of the base plate.
REFERENCES:
patent: 3306391 (1967-02-01), Bays
patent: 3866709 (1975-02-01), Mifsud
patent: 4011923 (1977-03-01), Talke et al.
patent: 4114722 (1978-09-01), Weber et al.
patent: 4147228 (1979-03-01), Bouyoucos
patent: 4712641 (1987-12-01), Chelminski
patent: 4853907 (1989-08-01), Bays
Farley Walter C.
Pihulic Daniel T.
Prakla-Seismos GmbH
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