Device for generating seismic waves by striking a mass against a target member
US4205731A · kind A · utility
5Cited by
6References
22Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 19, 1978 |
| Grant date | Jun 3, 1980 |
| Priority date | — |
| Expiry date | Jul 19, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/09
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.