Magnetic wheel speed sensor having one-piece pole and magnetic flux concentrator
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United States of America Patent
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-
Feb 17, 2004
Grant Date -
Oct 24, 2002
app pub date -
Jan 7, 2000
filing date -
Jan 7, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A wheel speed sensor assembly improves the performance and also simplifies manufacturing. It includes a one-piece pole and magnetic flux concentrator having first, second, and third regions of distinct diameters. Overmolded components at opposite ends of the pole/concentrator provide a cavity for the winding that eliminates the conventional use of a bobbin. A magnet is received over the pole between the first end and the intermediate region so that the magnet is more closely disposed adjacent the pole end of the sensor assembly. A molded end cap is provided at the opposite end of the assembly and one cap design can be easily substituted for another as desired.
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