Apparatus for electronic article surveillance tag pollution reduction
US6489891B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2001 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | May 16, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2445
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A magnetomechanical EAS tag having a bias magnet made of a high magnetostrictive material so that stress, which is a result of ordinary use of an article incorporating the tag, demagnetizes the bias rending the EAS tag inactive is provided. In an alternate embodiment a mechanical mechanism is incorporated with a conventional EAS tag to deactivate the tag upon ordinary use of an article to which the tag is associated. In yet another embodiment, a combination of the bias magnet made of a high magnetostrictive material and a mechanical deactivation mechanism is used to deactivate an EAS tag during ordinary use of an article to which the tag is associated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.