Electronic seal improvement
US10510272B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Aug 10, 2018 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Aug 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F3/0335
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention consists of a plug bolt and a bolt seat. The plug bolt comprises a conductor and a circuit board; the conductor has a first stuck-buckle, an accommodation-hole, and a top-cover; the circuit board is set with an RFID chip, an upper contact point, and a lower contact point. The RFID chip forms a first far-field antenna loop through the first pin, the upper contact point, the top-cover, and the conductor. The bolt seat is equipped with an elastic device, an internal antenna, an inserting-hole, and a second stuck-buckle, thereby controlling the elastic device to provide a pre-pressure to the internal antenna to electrically connect with the lower contact point. When the RFID chip is activated, the internal antenna forms a second far-field antenna loop and synchronously activate the first one; which the first and second far-field antenna loops can be cut-off when the top-cover is worn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.