Search coil assembly for metal detectors
US4870381A · kind A · utility
3Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Jun 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil assembly for a metal detector of the type used for detecting metal fragments in foodstuffs and pharmaceuticals, the coil assembly comprising a frame of non-metallic, the frame having an aperture therethrough for the passage of material undergoing inspection, coils of electrically conductive strands wound upon the frame, plastic material adhered to the frame and coils, less the aperture portion of the frame, and a coating of metal adhered to the plastic material to encase the plastic material in a metal layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.