Magnetic sensor with high and low resolution tracks

Details Magnetic sensor with high and low resolution tracks Magnetic sensor with high and low resolution tracks

2011-08-16

2011-08-16

Patidar, Jay M (Department: 2858)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

07999537

ABSTRACT:
A sensing apparatus that includes first and second magnet assemblies. The first magnet assembly includes first and second magnets that have respective first and second opposite magnetic fields, and respective first and second dimensions. The first dimension is relatively smaller than the second dimension. The second magnet assembly is positioned at a distance from the first magnet assembly. The second magnet assembly includes a third magnet that has a third magnetic field which is opposite to the first magnetic field.

REFERENCES:
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patent: 6784659 (2004-08-01), Haji-Sheikh et al.
patent: 1452834 (2004-09-01), None
patent: 02017411 (1990-01-01), None
Search Report and Written Opinion from corresponding International Application No. PCT/US2007/000784 mailed on Jun. 29, 2007.
European Office Action for corresponding European Application No. 07709718.6-2213 dated Nov. 9, 2010.

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