Self-detaching anti-theft device with energy limit
US11727240B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2021 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Oct 21, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/48
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods for operating a security tag. The methods comprise: receiving a first wireless signal using a receive circuit of the security tag; inducing a voltage in the receive circuit of the security tag while the first wireless signal is being received; performing operations by a controller to selectively close a switch while the voltage is being induced in the circuit; causing a release of a mechanical component of the security tag by allowing energy to flow from the receive circuit to the mechanical component when the switch is closed; and performing operations by the controller to prevent damage to the mechanical component as a result of the security tag being a certain distance from an external device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.