Horizontally polarized shear-wave vibrator seismic source
US6119804A · kind A · utility
Inventor
Key dates
| Filing date | May 13, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | May 13, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/047
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dynamic force transducer for generating horizontally oriented shear forces and motion at a surface of a solid medium. A rigid frame is placed in direct contact with the surface of the solid medium. At least one pair of identical dynamic-force driver units is mounted on the frame to impart horizontally oriented forces to the frame. Symmetrical pairs of compliant springs support the force drivers, but the compliances of each pair of springs may be adjusted or interchanged with other similar springs to introduce different predetermined mechanical resonances. The driver units are excited to produce the horizontally oriented forces with one or more driver units imparting a pushing force and one or more driver units simultaneously imparting a pulling force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.