Load sensing system including RFID tagged fasteners
US7412898B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2006 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Dec 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fastener or other structural component for wireless sensing of applied tensile load. The fastener includes an elongate body with a bore that extends within the body. A grounding pin is positioned within the bore and attached to the body within the bore. The fastener includes a wireless transponder, such as a radio frequency identification (RFID) transponder or tag, that is mounted on a head provided at the end of the body and exposed to the bore, such as by positioning the RFID tag in a recessed surface of the head or extending the bore through the head. The transponder generates a response signal with a unique identifier in response to a radio frequency signal from a transmitter. The grounding pin contacts and grounds the transponder to block transmittal of the response signal when a tensile load applied to the fastener is less than a minimum tensile load value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.