Apparatus and seismic method
US3999626A · kind A · utility
6Cited by
10References
6Claims
0Family size
Inventor
Key dates
| Filing date | Apr 25, 1975 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Apr 25, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S181/401
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A seismic generator for communicating from either above or below the surface of the earth is disclosed. The generator includes a system of eccentrically weighted masses such as, for example, unbalanced flywheels, which can be rotated to produce a seismic signal capable of being detected at great distances either on the surface or underground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.