Metal detector and discriminator using differentiation for background signal suppression
US4514692A · kind A · utility
47Cited by
6References
12Claims
0Family size
Assignee
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Key dates
| Filing date | May 3, 1982 |
| Grant date | Apr 30, 1985 |
| Priority date | — |
| Expiry date | May 3, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/105
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Eddy current type metal detector for locating and distinguishing between metal objects of different types in the ground or other surroundings. Differentiation is employed to eliminate signals from the ground soil or other material in which the object is located, and objects of a particular type are detected from the phases of signals which they produce.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.