Secure RFID tag or sensor with self-destruction mechanism upon tampering
US9530090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2015 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Aug 18, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/371
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit board anti-tamper mechanism comprises a circuit board having a frangible portion, a trigger having a trigger spring, a trigger arming mechanism actuated by the trigger wherein the trigger arming mechanism is initially non-actuated, a force producing mechanism, a latch providing mechanical communication between the trigger arming mechanism and the force producing mechanism, wherein the latch initially retains the force producing mechanism in a refracted position. Arming pressure applied to the trigger sufficient to overcome the trigger spring force will actuate the trigger arming mechanism, causing the anti-tamper mechanism to be armed. Subsequent tampering with the anti-tamper mechanism results in a decrease of pressure on the trigger below the trigger spring force, thereby causing the trigger arming mechanism to actuate the latch, thereby releasing the force producing mechanism to apply force to the frangible portion of the circuit board, thereby breaking the circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.