Method and apparatus for automatically desensitizing sensor elements of protected articles
US5500640A · kind A · utility
29Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1995 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Apr 25, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/248
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A desensitizer apparatus for desensitizing a security sensor element in a book spine. The apparatus includes a scanner which scans along a surface against which book spines are positioned and which detects sensor elements in the spines to be sure that only one book is positioned against the surface. If only one sensor element is detected, a signal is generated which operates a drive mechanism to move desensitizer magnets close to the surface to deactivate the sensor element in the book.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.