Geophone
US7284431B1 · kind B1 · utility
9Cited by
61References
47Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Sep 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/181
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved system for sensing ground motion is provided. The system generally comprises a shell and a case within the shell and connected by a suspension. The mass of the case is greater than the mass of the shell. An electrode within the shell detects relative motion between the shell and the case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.