Method and apparatus for monitoring a series of products
US5304927A · kind A · utility
12Cited by
0References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 4, 1991 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Feb 4, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/105
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Monitoring a series of products of the kind in which the presence of foreign bodies in the product being monitored is detected by the characteristic magnetic field phase difference each material exhibits. The signal generated by a satisfactory product having no foreign body in it is used as the datum for judging whether the next subsequent product is free from a foreign body or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.