Coupling means for horizontal vibrator

Details Coupling means for horizontal vibrator Coupling means for horizontal vibrator

1979-12-28

1981-06-02

Birmiel, Howard A.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181116, 181119, 181401, 367 75, 248678, G01V 1047

Patent

active

042706262

ABSTRACT:
The present invention relates to means for coupling the horizontally directed force of a seismic transducer into the earth with a downward going shear wave. The coupling means consists of a plurality of downwardly convergent wedge-shaped earth engaging cleats of differing depth mounted on the transducer support means. The lateral load-bearing surfaces of the cleats have sloping faces equally inclined to the vertical, so that they tend to compact and compress the earth to a similar degree with horizontal vibrator motion. However, on some or all of the cleats these sloping faces are interrupted by horizontal faces in a stair-case fashion so as to vary the overall sharpness of such cleats.

REFERENCES:
patent: 2557960 (1951-06-01), Gerhardt
patent: 3046843 (1962-07-01), Rowe
patent: 3159232 (1964-12-01), Fair
patent: 3159233 (1964-12-01), Clynch et al.
patent: 4135599 (1979-01-01), Fair
patent: 4143736 (1979-03-01), Fair

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