Metal detector protected from malfunction caused by radio waves
US5029300A · kind A · utility
6Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1990 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Jun 21, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/9502
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor according to this invention comprises an oscillation circuit including an LC resonant circuit, wherein a detection signal is prohibited upon arrival of an external radio wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.