Non-contact scanning using magneto-resistive sensor
US7511480B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2006 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Feb 28, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/772
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for administering a fluid product includes a measuring assembly for measuring a position between spaced apart elements of the apparatus that can be moved relative to each other. The measuring assembly includes at least one magneto-resistive sensor that is fixed to a first element, such as a casing, and is arranged opposite at least a second element, such as a sleeve, which can be moved relative to the first element. A magnetic device co-operates with the at least one sensor and is formed by a permanent magnet on the first element and a magnetized second element including a magnetic surface profile or including of a number of alternately arranged, different magnetic pole areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.