Article security element
US5572191A · kind A · utility
64Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Mar 17, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5004
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An article security element is provided which, regardless of its orientation in relation to a scanning field irradiated by a transmitter coil, can generate a response field which can be reliably detected by a receiver coil. The article security element preferably has a soft magnetic metal strip which is wound about an oblong, column-shaped base body at a winding angle which has a value between about 30 degrees and about 60 degrees with respect to the longitudinal axis of the base body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.