Device for generating seismic waves by striking a mass against a

Details Device for generating seismic waves by striking a mass against a Device for generating seismic waves by striking a mass against a

1978-07-19

1980-06-03

Birmiel, Howard A.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181121, G01V 104

Patent

active

042057310

ABSTRACT:
A device for generating acoustic waves in the earth by striking a mass, housed in a guiding tube, against a target member secured to the lower end of this tube and coupled to the earth in operating conditions, including means, such as an electromagnet, for holding said mass at the upper end of said tube and releasing it at will, and means to turn the tube upside down after each operation so as to reset the mass in position for a new operation.

REFERENCES:
patent: 3209854 (1965-10-01), Williams
patent: 3318411 (1967-05-01), Doubt
patent: 3393763 (1968-07-01), Sundt
patent: 3542151 (1970-11-01), Hamilton
patent: 4064964 (1977-12-01), Norden
patent: 4118994 (1978-10-01), Layotte et al.

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