Method and apparatus for providing container security with a tag
US6747558B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2002 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Apr 26, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F3/0376
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device (12) facilitates sealing and tracking of a container (18). The device includes a bolt (166) which extends through openings in a latch mechanism (19) on the container. The bolt also passes through spaced coils (251, 252) of the seal device. The seal device uses one coil to generate a magnetic field, while monitoring the corresponding magnetic field induced in the other coil. Tampering with the bolt affects the magnetic field, which in turn permits the seal device to detect the tampering. The seal device periodically transmits wireless signals (71), which can be remotely received for purposes of tracking the container and monitoring the integrity of the seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.