Fuel level sensor using rotating angel sensor attached to float on totating arm
AssigneeFirst Inertia Switch Limited
InventorsAlan Thomas, Brian Johnson
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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.
Claims22
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 gap which contains a magnetosensitive probe for measuring the variation in induction in the gap, the moveable part comprising a magnet displaceable parallel to the magnetic pieces of the stator and facing the stator, the poles of the magnet being polarized perpendicularly to direction of movement of the moveable part relative to the stator, wherein each of the two soft magnetic pieces of the stator comprises a strip which is bent away from the magnet to define said air gap.
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Dependencies are inferred from the claim text.