Metal detector employing static discrimination
US6911823B2 · kind B2 · utility
15Cited by
33References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2003 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Mar 28, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/104
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A metal detector employing static discrimination. Within the scope of the invention is a two-frequency method and apparatus for discriminating between metal objects and ground. Also within the scope of the invention is a three-frequency method and apparatus for discriminating between ferrous and non-ferrous metal objects. The methods and apparatus do not require movement of the search head of the metal detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.