Intelligent implement having metal encased passive radio frequency transponder and examples of use
US7819318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Dec 27, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/397
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A metal-encased passive radio-frequency transponder assembly includes a metal housing having an external surface and an opening accessing an interior space, the opening closeable with a metal cover to provide a solid metal encasement. The interior space of the encasement is defined by the interior walls of the housing and cover. The solid metal encasement has a substantially uniform wall thickness between the interior wall surface adjacent which an antenna assembly is disposed and the opposing external surface of less than about 0.5 mm. A passive radio-frequency transponder device is received within the interior space of the housing. The passive transponder device has an iron core antenna assembly. The antenna assembly is disposed adjacent the interior wall surface of the interior space and oriented to maximally couple a radio-frequency signal present at the interior wall surface to an antenna of the antenna assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.