Electronic seal having spring antenna
US11973294B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 13, 2022 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Nov 30, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention includes a plug bolt and a bolt seat. The plug bolt includes a bolt pin having an upper buckle and a receiving hole that receives a circuit device including an RFID chip and a lower contact point therein. The bolt seat includes a lower monopole antenna, a locking hole into which the bolt pin is insertable, and a lower buckle by which the upper buckle is positionable. The bolt pin is manipulatable to lock up with the bolt seat and set the lower monopole antenna and the lower contact point in electrical connection to activate the RFID chip. The lower monopole antenna includes a spring at a location corresponding to the locking hole. The spring provides preloading for keeping electrical connection between the lower monopole antenna and the lower contact point. The spring is set to match with a frequency band of a host device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.