Measuring device for the angle of rotation of a rotating machine member
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United States of America Patent
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Apr 25, 2006
Grant Date -
Mar 4, 2004
app pub date -
May 1, 2003
filing date -
May 2, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for measuring the angle of rotation of a rotating member of a machine, comprising a signal transmitting rotor which includes a magnet rim consisting of magnets having alternatingly arranged south poles and north poles and being moved with respect to a stationary measuring sensor is characterized in that each magnet or each magnet zone has a thickness which varies substantially sinusoidally in circumferential direction, having its maximum in the pole center of each magnet and/or forms an air gap with the measuring sensor varying sinusoidally in circumferential direction.
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