Rotational position sensor employing magneto resistors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 4, 2000
Grant Date -
N/A
app pub date -
Apr 2, 1998
filing date -
Apr 2, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotational position sensor assembly (10) includes a wheel (20) having a ferromagnetic hub portion (22) and a resistor support member (24) on which an array of magneto resistor elements (28) are mounted. Surrounding the wheel (20) and rotatable relative to it is a magnetic return element (12) on which are mounted permanent magnets (18). The magnetic field created is tangential to the particular MR element(s) (28) aligned with this field, causing a change in resistance that indicates the relative rotational position of the magnetic return element (12) relative to the wheel (20).
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