Fuel level sensor using rotating angel sensor attached to float on totating arm
US7342395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2005 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fuel level sensor having a magnetic position sensor connected to an arm for attachment to a float, wherein the magnetic position sensor comprises a stator and a movable part, the stator having two soft magnetic pieces defining an air gab, which contains a magnetoresistive probe for measuring the variation in induction in the gap, the moveable part comprising a yoke of soft magnetic materiel displaceable parallel to the magnetic pieces of the stator, and a magnet partly embedded in a cavity in the yoke facing the stator, the poles of the magnet being polarized perpendicularly to direction of movement of the moveable part relative to the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.