Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent
1979-07-05
1981-06-09
Moskowitz, Nelson
Acoustics
Geophysical or subsurface exploration
Seismic wave generation
181121, 180 2402, 280 80B, G01V 1047, G01V 1053
Patent
active
042719232
ABSTRACT:
A mobile device for generating acoustic shear waves comprises a structure provided with at least one axle with wheels mounted thereon, said axle being displaceable with respect to at least a part of the structure.
The mobile device has mounted thereon a target-member displaceable from a position suitable for transportation to a working position where it is in contact with the earth, and means for striking the target member, when in working position, by means of a mass, to produce an impact thereon.
The target member is provided at its upper part with tracks for the wheels of the axle so that the wheels can be driven, by displacing the respective axles, from a position of contact with the earth to a position where they bear on the target member with the weight of at least a part of the structure.
REFERENCES:
patent: 1314498 (1919-09-01), Bower
patent: 2717707 (1955-09-01), Martin
patent: 2910134 (1959-10-01), Crawford et al.
patent: 3181914 (1965-05-01), Humes
patent: 4050540 (1977-09-01), Cholet et al.
patent: 4050739 (1977-09-01), Toyooka
patent: 4118994 (1978-10-01), Layotte et al.
James Andre
Layotte Pierre-Claude
Institut Francais du Pe'trole
Moskowitz Nelson
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