Vibration generators

Details Vibration generators Vibration generators

1978-01-16

1980-09-16

Moskowitz, Nelson

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181401, 73668, G01V 114

Patent

active

042224551

ABSTRACT:
Apparatus for generating vibrations in a medium, such as the ground, comprises a first member which contacts the medium, means, preferably electromagnetic, which includes two relatively movable members for generating vibrations in the apparatus and means operatively connecting the said two members to said first member such that the relatively amplitudes of the movements of said three members can be adjusted to match the impedances of the apparatus and the medium.

REFERENCES:
patent: 2706400 (1955-04-01), Unholtz
patent: 3123728 (1964-03-01), Kreiskorte
patent: 3516510 (1970-06-01), Coburn et al.
patent: 3708033 (1973-01-01), Horsley
patent: 4014403 (1977-03-01), Mifsud

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