Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2005-02-08
2005-02-08
Patidar, Jay (Department: 2862)
Electricity: measuring and testing
Magnetic
Displacement
C324S207250, C324S207220
Reexamination Certificate
active
06853184
ABSTRACT:
Methods and systems of utilizing a ring magnet for magnetic sensing applications thereof are disclosed. A magnetoresistive sensor device can be provided which is associated with a ring magnet configured as a sensing target. The magnetoresistive sensor device is insensitive to magnetic pole polarities. The ring magnet is generally magnetized to include a plurality of magnetic poles, such that at least one pole thereof is larger than at least one other pole thereof. An output signal can then be produced from the magnetoresistive sensor device via a digital circuit thereof. The output signal is independent of a rotation of the sensing target. The sensor itself is rotationally insensitive provided that the ring magnet is symmetrically magnetized.
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Johnson Curtis B.
Olson Thomas J.
Fredrick Kris T.
Honeywell International , Inc.
Lopez Kermit D.
Ortiz Luis M.
Patidar Jay
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