Article control system having coded magnetomechanical marker
US4647917A · kind A · utility
39Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1984 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Mar 26, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2474
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An article control system has an encoded marker associated with an article appointed for passage through an interrogation zone. The marker resonates upon interrogation to provide a signal which is detected and compared against a code list containing at least one predefined code. A signal generated upon verification of parity between marker resonance and the predefined code triggers an alarm or actuates a gating mechanism adapted to redirect the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.