Patent ID: 6707292
Filing Date: 2004-03-16
Classification: G01D

Abstract:
An angular position sensor comprising:a rotatable magnet disposed for rotation about a first axis and generating a variable magnetic field in response to rotation about the first axis; a magnetically sensitive device disposed remotely from the rotatable magnet along a second axis, the second axis being perpendicular to the first axis; the magnetically sensitive device being sensitive to magnitude and direction of the variable magnetic field, and the magnetically sensitive device adapted to generate an output signal indicative of the magnitude and direction of the variable magnetic field; a first pole piece having a first segment, a second segment, and a third segment; and a second pole piece having a fourth segment, a fifth segment, and a sixth segment; wherein the first segment and the fourth segment are disposed about the second axis at a first distance such that the first segment and the fourth segment are mutually parallel to the second axis; and further wherein the third segment and the sixth segment are disposed about the second axis at a second distance such that the third segment and the sixth segment are mutually parallel to the second axis, the second distance being less than the first distance; and further wherein the second segment and the fifth segment are disposed about the second axis such that the second segment and the fifth segment are at an angle to the second axis, the angle being greater than zero and less than ninety degrees.